Questões de Concurso Sobre interpretação de texto | reading comprehension em inglês

Foram encontradas 13.065 questões

Q1763675 Inglês

Instruction: Answer question based on the following text.


Fake news: improved critical literacy skills are key to telling fact from fiction



Adapted from https://www.theguardian.com/teacher-network/2017/oct/17/fake-news-improved-criticalliteracy-skills-teaching-young-people 

According to the text:
Alternativas
Q1763674 Inglês

Instruction: Answer question based on the following text.


Fake news: improved critical literacy skills are key to telling fact from fiction



Adapted from https://www.theguardian.com/teacher-network/2017/oct/17/fake-news-improved-criticalliteracy-skills-teaching-young-people 

Consider the following statements about the text, marking if they are true (T) or false (F).
( ) Teachers are worried because students are citing false information found online as fact in their work. ( ) Students have problems, and do not memorize what they learn. ( ) Reading comprehension is key to develop students’ critical literacy.
From the top to the bottom, the parentheses are correctly filled with:
Alternativas
Q1719187 Inglês
Future Cars at CES

The Consumer Electronic Show (CES) ran in Las Vegas from the 5th to the 8th January 2017, and the big part of the show was about cars that can detect emotion, or are self-driving or are voice controlled. Honda’s latest concept, equipped with a digital assistant named HANA, can detect the driver’s emotions and play appropriate music. It can also function autonomously as a ride-sharing vehicle making money for its owner while the owner is at work or asleep. If you fancy speaking to your car, the Oasis concept car might interest you as it is voice-controlled. Its rear is designed for cargo like parcels or pizzas, and there is a small garden in the dashboard to make the space more personal. If you do not want to interact much with your car, the self-driving ones will do just fine. Nissan’s Seamless Autonomous Mobility system will help autonomous vehicles make decisions in unpredictable situations.
About the facilities of this car choose the CORRECT alternative.
Alternativas
Ano: 2017 Banca: IESES Órgão: IGP-SC Prova: IESES - 2017 - IGP-SC - Perito Odontolegista |
Q1701527 Inglês

UNEARTHED: REMAINS OF THE EARLIEST KNOWN TSUNAMI VICTIM

By Charles Choi | October 25, 2017 1:00 pm

Paragraph 1 Tsunamis have claimed hundreds of thousands of lives in the past two decades. Now a new study finds that a 6,000-year-old skull may come from the earliest known victim of these killer waves.

Paragraph 2 The partial human skull was discovered in 1929 buried in a mangrove swamp outside the small town of Aitape Papua New Guinea, about 500 miles north of Australia. Scientists originally thought it belonged to an ancient extinct human species, Homo erectus. However, subsequent research dated it to about 5,000 or 6,000 years in age, suggesting that it instead belonged to a modern human. 

A Rare Specimen

Paragraph 3 The skull is one of just two examples of ancient human remains found in Papua New Guinea after more than a century of work there. As such, archaeologists wanted to learn more about this skull to elucidate how people settled this region.

Paragraph 4 The scientists went back to where this skull was found and sampled the soil in which it was discovered. They focused on details such as sediment grain size and composition.

Paragraph 5 In the sediment, the researchers discovered a range of microscopic organisms from the ocean known as diatoms. These were similar to ones found in the soil after a 1998 tsunami killed more than 2,000 people in Papua New Guinea — for instance, their shells of silica were broken, likely by extremely powerful forces. 

Paragraph 6 These diatom shells, combined with the chemical compositions and the size ranges of the grains, all suggest that a tsunami occurred when the skull was buried. The researchers suggested the catastrophe either directly killed the person or ripped open their grave.

Paragraph 7 Tsunamis, which are giant waves caused by earthquakes, volcanic eruptions or underwater landslides, are some of the deadliest natural disasters known. The 2004 tsunami in the Indian Ocean killed more than 230,000 people, a higher death toll than any fire or hurricane.

Paragraph 8 The site where the skull was found is currently about 7.5 miles away from the coast. Still, the researchers noted that back when whoever the skull belonged to was alive, sea levels were higher, and the area would have been just behind the shoreline.

Paragraph 9 The waves of the tsunami that hit Papua New Guinea in 1998 reached more than 50 feet high and penetrated up to three miles inland. “If the event we have identified resulted from a similar process, it could have also resulted in extremely high waves,” study co-lead author Mark Golitko, an archaeologist at the University of Notre Dame in Indiana and the Field Museum in Chicago.

Paragraph 10 These results show “that coastal populations have been vulnerable to such events for thousands of years,” Golitko said. “People have managed to live with such unpredictable and destructive occurrences, but it highlights how vulnerable people living near the sea can be. Given the far larger populations that live along coastlines today, the potential impacts are far more severe now.”

Paragraph 11 Golitko plans to return to the area over the next few years “to further study the frequency of such events, how the environment changed over time, and how people have coped with the environmental challenges of living in that environment.” He and his colleagues detailed their findings Wednesday in the journal PLOS O.

Retrieved and adapted from:

<http://blogs.discovermagazine.com/d-brief/2017/10/25/first-tsunami-victim/#.WfYiYmhSzIU Accessed on October, 29th, 2017


According to paragraph 10, the correct alternative is:
Alternativas
Q1633008 Inglês
Qual a opção que explica corretamente uma modalidade de tradução, segundo Roman Jakobson (1975: 64-5)?
Alternativas
Q1633007 Inglês
Quais pesquisadores foram responsáveis pelo mapeamento da área de Estudos da Tradução?
Alternativas
Q1633006 Inglês
“Só se poderia falar em tradução literal se houvesse línguas bastante semelhantes para permitirem ao tradutor limitar-se a uma simples transposição de palavras ou expressões de uma para outra. Mas línguas assim não há, nem mesmo entre os idiomas cognatos. As inúmeras divergências estruturais existentes entre a língua do original e a tradução obrigam o tradutor a escolher, de cada vez, entre duas ou mais soluções, e em sua escolha ele é inspirado constantemente pelo espírito da língua para a qual traduz”. (RÓNAI, 1987: 21).
De acordo com o autor, portanto, é FALSO afirmar:
Alternativas
Q1633005 Inglês
Sobre o papel da tradução no mercado editorial brasileiro, é FALSO afirmar, segundo Guerini & Costa, 2007), que:
Alternativas
Q1633004 Inglês
Não constituem estratégias de tradução, de acordo com Krings (1986):
Alternativas
Ano: 2017 Banca: CETRO Órgão: FAPESP Prova: CETRO - 2017 - FAPESP - Analista Administrativo |
Q1631173 Inglês
Mr. Thompson works in the administrative area of a company. He has just received an e-mail of one of his clients. Mr. Joe Peterson is making a request to him. Read the e-mail below:

Dear Mr. Thompson,
We would be grateful if you could send us the report from /ast month.
Yours sincere/y, Joe Peterson Human Resource Manager
Based on the message above and the given context, analyse the way(s) which can be used to reply to a request such as Joe Peterson's request.
l. "As you requested ... ". II. "As promised ... ". III. "ln answer to your enquiry ... ".
The correct ways(s) is(are):
Alternativas
Ano: 2017 Banca: CETRO Órgão: FAPESP Prova: CETRO - 2017 - FAPESP - Analista Administrativo |
Q1631170 Inglês

A perfect office - Career in Office Administration

   No office would be able to function effectively with the structural backbone - the administrative staff.

Sector overview 

   Technology can make the various jobs easier, but the fact remains, that there needs to be a person to run the technology effectively. The job in question here is one that you watch happening in every office in every city or town in every country. Whichever office you go to, one thing is common. Virtually every business needs office support personnel. This is needed and is not likely to change anytime soon. Many small businesses started out by working without support staff (admin or assistants), but with expansion, they had to give in and hire.

   lt is understandable that when dealing with the employees internally and in dealing with other business parties externally, businesses need the services of such personnel, apart from the day-to-day office administration functions. Whatever the number of people working in the administrative capacity in an office, the role could mean looking after severa! functions. lt could all include handling the telephone, dealing with difficult phone calls from customers or other parties, handling challenging clients,maintaining reports, accounting for petty cash, mail management, banking work, and so on.

    ln fact in severa! companies and professions, a trusted administrative assistant is looked upon as a confidant. Many managers prefer assistants who know everything about them, about their lives and especially about their style of work. There is something deeply comforting about having everything in office run smoothly, and meetings happening on time, with the correct coffee and snacks. And for that, you need personnel!

     To getthere 

    Since a formal education may not be necessary to get a job, there is no single route to becoming an administrative assistant. There are severa! ways in which one can go about it. lt often happens that people get a job, and learn on it and develop expertise while working. Even then , there are certain soft and behavioural skills, apart from technical skills that assistants are supposed to have.

     Aspirants should ideally think of taking a professional course, since the curriculum is designed to look into particular job descriptions and so training will be offered in those areas. This training provides an upper hand in many cases in terms of getting a good job. ln either case, the skills are essential. When hiring office support personnel, many companies look for employees with a combination of the types of technical skills that are needed in the particular job as well as a positive attitude and strong communication skills. With technology now ruling the roost, most positions look for personnel who not only display the soft skills to work on the job, but also have a fair knowledge of operating computers and the required software on them. Often, before recruitment, companies ask applicants to take severa! tests to gauge their abilities in handling the tasks that lie ahead.

( ... ) 

    Whatever the designation or the title, the person in charge of office administration (management) carries a lot of responsibility. The diverse duties comprise those that must be performed on a daily basis, and some that need to be handled on a case-to-case basis. The role may vary with the business and the size of the office, but the primary duty is to ensure that the daily running of the office is smooth. Among other things, the office administrator is responsible for collecting and sending out mai l, for directing the calls to the appropriate offices or extensions, and making sure that the documentation is in place. 

     These job prospects are usually high for those who are qualified, since offices will always need administrative personnel, and with expansion, they tend to take on more and more people. Openings can be found at departments and offices in the public as well as private sectors, no matter the industry. A variety of positions are available depending upon the work and the kind of hours to be put in. Usually, the aftice administrators and assistants have fixed hour jobs. It is a good option for those looking for a little flexibility, or even a single shift, and they should be able to work something out with employers.

    Salaries vary like night and day. They depend heavily on the size of the organization, the duties involved, the tasks assigned and most importantly, the experience the person has.


Available in: http://www.freepressjournal.in/education/a-

perfect-office-career-in-office-administration/656443. Adapted. 

According to the text, analyse the assertions below.


I. Due to the technology, many companies do not call for office support personnel.

II . ln many companies, a reliable administrative assistant can be taken as a person you can share feelings and secrets.

IlI. The one and only responsibility that the office administrator carries is sending and receiving mails.


The correct assertion(s) is(are):

Alternativas
Q1630130 Inglês

Read the statement and answer.


Susan’s wife passed away one year ago.


We can say that

Alternativas
Q1630116 Inglês

Find the alternative that completes the blanks.


Kylie ____ classical music, her friends ______.”

Alternativas
Q1629319 Inglês
INSTRUCTIONS – Read the following text carefully and then choose the correct alternatives that answer the questions.
LION NUMBERS PLUNGE AS AFRICAN WILDERNESS SUCCUMBS TO HUMAN PRESSURE

Posted by David Braun of National Geographic on December 6, 2012

Only 32,000 Lions Remain out of 100,000 Roaming Africa in the 1960



The king of the African savannah is in serious trouble because people are taking over the continent’s last patches of wilderness on unprecedented scale, according to a detailed study released this week. 
The most comprehensive assessment of lion (Panthera leo) numbers to date determined that Africa’s once-thriving savannahs are undergoing massive land-use conversion and burgeoning human population growth. The decline has had a significant impact on the lions that make their home in these savannahs; their numbers have dropped to as low as 32,000, down from hundreds of thousands estimated just 50 years ago.
The study, funded in part by the National Geographic Big Cats Initiative, was published online in this week’s journal Biodiversity and Conservation. Some 24,000 of the continent’s remaining lions are primarily in 10 strongholds: 4 in East Africa and 6 in southern Africa, the researchers determined. Over 6,000 of the remaining lions are in populations of doubtful long-term viability. Lion populations in West and central Africa are the most acutely threatened, with many recent local extinctions, even in nominally protected areas.
“These research results confirm the drastic loss of African savannah and the severe decline in the number of remaining lions,” said Big Cats Initiative (BCI) Grants Committee Chair Thomas E. Lovejoy, University Professor for Environmental Science & Public Policy at George Mason University and Biodiversity Chair of The Heinz Center. “Immediate and major action is required to save lion populations in Africa.”
African savannahs are defined by the researchers as those areas that receive between 300 and 1500 mm (approximately 11 to 59 inches) of rain annually. “These savannahs conjure up visions of vast open plains,” said Stuart Pimm, co-author of the paper who holds the Chair of conservation at Duke University. “The reality is that from an original area a third larger than the continental United States, only 25 percent remains.” In comparison, 30 percent of the world’s original rain forests remain.

Lions in West Africa are at highest level of risk, Pimm and the other researchers found. “The lions in West Africa are essentially gone,” said Pimm. “Only a radical effort can save them at this stage.”
Stuart Pimm is also a member of the Big Cats Initiative Grants Committee and a regular blogger for National Geographic News Watch. We interview him here about the research released this week.
Your study found that the population of wild lions in Africa plunged by two-thirds in 50 years. What’s the methodology to determine the populations then and now? 
Scientists estimated that 50 years ago, approximately 100,000 lions made their home in Africa’s iconic savannahs. This estimate was made using rough calculations of the size of remaining habitat and lion density. Our research suggests that lion populations have experienced a dramatic decline, and numbers have dropped to as low as 32,000 individuals. We compiled all of the most current available estimates of lion numbers and distribution – continentwide reports, country-specific lion conservation strategies and action plans, and newly published lion population surveys. To fill in any gaps, we drew from the knowledge of the co-authors and colleagues working across Africa to conserve lions.
Counting carnivores is a tricky business. Individual identification is a tremendous challenge and requires highresolution cameras or good, unobstructed views in person. They are often shy and cover large distances. Lions are difficult to count even though they are social and sleep most of the day. Only a very few lion populations are known at the individual level, such as Liuwa Plains National Park, Zambia. Individual recognition of every lion in an area requires intense study, significant resources, and low numbers of individuals. Therefore, researchers use a variety of other imperfect techniques to estimate lion population size in all other lion areas. Some more common estimation techniques include spoor tracking or call-up surveys.
What are the main causes of lion decline?
There is a variety of factors leading to lion decline across their range. One of the most important things we identified was habitat loss. People usually think of savannah Africa as being comprised of wilderness, vast open grasslands stretching to the horizon in all directions. However, our analysis showed that from an original area a third larger than the United States, only 25% remains. In comparison, 30% of the world’s original tropical rainforest remain. Most of this reduction has come in the last 50 years due to massive land-use conversion and burgeoning human population growth. Besides habitat loss, another major driver of decline is human-caused mortality. This includes poaching, retaliatory killing, and trophy hunting.
How many of the remaining 32,000 wild lions in Africa are in stable populations in viable habitat? Where are the strongholds?
Our analysis identified only 67 largely isolated areas across the entire African continent where lions might survive. Of these 67 areas, only 10 qualified as strongholds where lions have an excellent chance of survival. These strongholds are located across East and Southern Africa, but importantly no areas in West or Central Africa qualify. Unfortunately this means that for the remaining 32,000 wild lions in Africa, only approximately 24,000 are in populations that can be considered at all secure. More than 5,000 lions are located in small, isolated populations, putting their immediate survival in doubt.
What’s the prognosis for wild lions? Extinction?
The drastic reduction in lion numbers and habitat highlighted by our research is certainly alarming from a conservation standpoint. Yet, African lions are not in immediate danger of extinction. Substantial lion populations exist in large, well-protected areas such as the Serengeti or Kruger ecosystem. Many of the remaining lion populations in East or Southern Africa are in well-protected areas such as national parks and game reserves (although some of these allow hunting). Nevertheless, this should not be used as a blanket statement; there are populations and even countries in these regions that have few or no lions remaining. Overall, lions in West and Central Africa are in the gravest danger of extinction. More than half of the populations vital to lion conservation in these regions (as noted by the IUCN) have been extirpated in the past five years, with several countries losing their lions entirely. According to our research, fewer than 500 lions remain in West Africa, scattered across eight isolated sites. This is of serious concern as these populations contain the most genetically unique lions in all of Africa and are most closely related to the Asiatic lion.
Why is it important that we try to sustain the survival of wild lions in Africa?
Large carnivores play valuable ecological roles in “top-down” structuring of the ecosystem. For instance, removal of lions may allow populations of mid-sized carnivores to explode which would have cascading impacts on other flora and fauna. From an ecological perspective, large carnivores are crucial for balanced, resilient systems. However, the lion is so much more than just the largest carnivore in Africa. It is a powerful cultural and political symbol. Attempting to list all the uses of lions in African proverbs, symbols, names etc. would be a nearly impossible task. Finally, lions are vital to the tourism trade, which in turn is economically critical for many African nations. 
How does your study help conservation of the big cats? 
You cannot protect what you do not know you have. This is a simple but true adage. Our compilation needed to occur in order to prioritize areas for conservation action. With a good map, numbers, and some understanding of connectivity between the lion areas, we now know which populations are threatened with extinction or conversely, which are well connected and well protected.

http://newswatch.nationalgeographic.com/lion-numbers-plunge-as-african-wilderness-succumbs-to-humanpressure/
All the statements reinforce the importance of lions to Africa, EXCEPT:
Alternativas
Q1629318 Inglês
INSTRUCTIONS – Read the following text carefully and then choose the correct alternatives that answer the questions.
LION NUMBERS PLUNGE AS AFRICAN WILDERNESS SUCCUMBS TO HUMAN PRESSURE

Posted by David Braun of National Geographic on December 6, 2012

Only 32,000 Lions Remain out of 100,000 Roaming Africa in the 1960



The king of the African savannah is in serious trouble because people are taking over the continent’s last patches of wilderness on unprecedented scale, according to a detailed study released this week. 
The most comprehensive assessment of lion (Panthera leo) numbers to date determined that Africa’s once-thriving savannahs are undergoing massive land-use conversion and burgeoning human population growth. The decline has had a significant impact on the lions that make their home in these savannahs; their numbers have dropped to as low as 32,000, down from hundreds of thousands estimated just 50 years ago.
The study, funded in part by the National Geographic Big Cats Initiative, was published online in this week’s journal Biodiversity and Conservation. Some 24,000 of the continent’s remaining lions are primarily in 10 strongholds: 4 in East Africa and 6 in southern Africa, the researchers determined. Over 6,000 of the remaining lions are in populations of doubtful long-term viability. Lion populations in West and central Africa are the most acutely threatened, with many recent local extinctions, even in nominally protected areas.
“These research results confirm the drastic loss of African savannah and the severe decline in the number of remaining lions,” said Big Cats Initiative (BCI) Grants Committee Chair Thomas E. Lovejoy, University Professor for Environmental Science & Public Policy at George Mason University and Biodiversity Chair of The Heinz Center. “Immediate and major action is required to save lion populations in Africa.”
African savannahs are defined by the researchers as those areas that receive between 300 and 1500 mm (approximately 11 to 59 inches) of rain annually. “These savannahs conjure up visions of vast open plains,” said Stuart Pimm, co-author of the paper who holds the Chair of conservation at Duke University. “The reality is that from an original area a third larger than the continental United States, only 25 percent remains.” In comparison, 30 percent of the world’s original rain forests remain.

Lions in West Africa are at highest level of risk, Pimm and the other researchers found. “The lions in West Africa are essentially gone,” said Pimm. “Only a radical effort can save them at this stage.”
Stuart Pimm is also a member of the Big Cats Initiative Grants Committee and a regular blogger for National Geographic News Watch. We interview him here about the research released this week.
Your study found that the population of wild lions in Africa plunged by two-thirds in 50 years. What’s the methodology to determine the populations then and now? 
Scientists estimated that 50 years ago, approximately 100,000 lions made their home in Africa’s iconic savannahs. This estimate was made using rough calculations of the size of remaining habitat and lion density. Our research suggests that lion populations have experienced a dramatic decline, and numbers have dropped to as low as 32,000 individuals. We compiled all of the most current available estimates of lion numbers and distribution – continentwide reports, country-specific lion conservation strategies and action plans, and newly published lion population surveys. To fill in any gaps, we drew from the knowledge of the co-authors and colleagues working across Africa to conserve lions.
Counting carnivores is a tricky business. Individual identification is a tremendous challenge and requires highresolution cameras or good, unobstructed views in person. They are often shy and cover large distances. Lions are difficult to count even though they are social and sleep most of the day. Only a very few lion populations are known at the individual level, such as Liuwa Plains National Park, Zambia. Individual recognition of every lion in an area requires intense study, significant resources, and low numbers of individuals. Therefore, researchers use a variety of other imperfect techniques to estimate lion population size in all other lion areas. Some more common estimation techniques include spoor tracking or call-up surveys.
What are the main causes of lion decline?
There is a variety of factors leading to lion decline across their range. One of the most important things we identified was habitat loss. People usually think of savannah Africa as being comprised of wilderness, vast open grasslands stretching to the horizon in all directions. However, our analysis showed that from an original area a third larger than the United States, only 25% remains. In comparison, 30% of the world’s original tropical rainforest remain. Most of this reduction has come in the last 50 years due to massive land-use conversion and burgeoning human population growth. Besides habitat loss, another major driver of decline is human-caused mortality. This includes poaching, retaliatory killing, and trophy hunting.
How many of the remaining 32,000 wild lions in Africa are in stable populations in viable habitat? Where are the strongholds?
Our analysis identified only 67 largely isolated areas across the entire African continent where lions might survive. Of these 67 areas, only 10 qualified as strongholds where lions have an excellent chance of survival. These strongholds are located across East and Southern Africa, but importantly no areas in West or Central Africa qualify. Unfortunately this means that for the remaining 32,000 wild lions in Africa, only approximately 24,000 are in populations that can be considered at all secure. More than 5,000 lions are located in small, isolated populations, putting their immediate survival in doubt.
What’s the prognosis for wild lions? Extinction?
The drastic reduction in lion numbers and habitat highlighted by our research is certainly alarming from a conservation standpoint. Yet, African lions are not in immediate danger of extinction. Substantial lion populations exist in large, well-protected areas such as the Serengeti or Kruger ecosystem. Many of the remaining lion populations in East or Southern Africa are in well-protected areas such as national parks and game reserves (although some of these allow hunting). Nevertheless, this should not be used as a blanket statement; there are populations and even countries in these regions that have few or no lions remaining. Overall, lions in West and Central Africa are in the gravest danger of extinction. More than half of the populations vital to lion conservation in these regions (as noted by the IUCN) have been extirpated in the past five years, with several countries losing their lions entirely. According to our research, fewer than 500 lions remain in West Africa, scattered across eight isolated sites. This is of serious concern as these populations contain the most genetically unique lions in all of Africa and are most closely related to the Asiatic lion.
Why is it important that we try to sustain the survival of wild lions in Africa?
Large carnivores play valuable ecological roles in “top-down” structuring of the ecosystem. For instance, removal of lions may allow populations of mid-sized carnivores to explode which would have cascading impacts on other flora and fauna. From an ecological perspective, large carnivores are crucial for balanced, resilient systems. However, the lion is so much more than just the largest carnivore in Africa. It is a powerful cultural and political symbol. Attempting to list all the uses of lions in African proverbs, symbols, names etc. would be a nearly impossible task. Finally, lions are vital to the tourism trade, which in turn is economically critical for many African nations. 
How does your study help conservation of the big cats? 
You cannot protect what you do not know you have. This is a simple but true adage. Our compilation needed to occur in order to prioritize areas for conservation action. With a good map, numbers, and some understanding of connectivity between the lion areas, we now know which populations are threatened with extinction or conversely, which are well connected and well protected.

http://newswatch.nationalgeographic.com/lion-numbers-plunge-as-african-wilderness-succumbs-to-humanpressure/
There are reasons why humans kill lions for, EXCEPT:
Alternativas
Q1629317 Inglês
INSTRUCTIONS – Read the following text carefully and then choose the correct alternatives that answer the questions.
LION NUMBERS PLUNGE AS AFRICAN WILDERNESS SUCCUMBS TO HUMAN PRESSURE

Posted by David Braun of National Geographic on December 6, 2012

Only 32,000 Lions Remain out of 100,000 Roaming Africa in the 1960



The king of the African savannah is in serious trouble because people are taking over the continent’s last patches of wilderness on unprecedented scale, according to a detailed study released this week. 
The most comprehensive assessment of lion (Panthera leo) numbers to date determined that Africa’s once-thriving savannahs are undergoing massive land-use conversion and burgeoning human population growth. The decline has had a significant impact on the lions that make their home in these savannahs; their numbers have dropped to as low as 32,000, down from hundreds of thousands estimated just 50 years ago.
The study, funded in part by the National Geographic Big Cats Initiative, was published online in this week’s journal Biodiversity and Conservation. Some 24,000 of the continent’s remaining lions are primarily in 10 strongholds: 4 in East Africa and 6 in southern Africa, the researchers determined. Over 6,000 of the remaining lions are in populations of doubtful long-term viability. Lion populations in West and central Africa are the most acutely threatened, with many recent local extinctions, even in nominally protected areas.
“These research results confirm the drastic loss of African savannah and the severe decline in the number of remaining lions,” said Big Cats Initiative (BCI) Grants Committee Chair Thomas E. Lovejoy, University Professor for Environmental Science & Public Policy at George Mason University and Biodiversity Chair of The Heinz Center. “Immediate and major action is required to save lion populations in Africa.”
African savannahs are defined by the researchers as those areas that receive between 300 and 1500 mm (approximately 11 to 59 inches) of rain annually. “These savannahs conjure up visions of vast open plains,” said Stuart Pimm, co-author of the paper who holds the Chair of conservation at Duke University. “The reality is that from an original area a third larger than the continental United States, only 25 percent remains.” In comparison, 30 percent of the world’s original rain forests remain.

Lions in West Africa are at highest level of risk, Pimm and the other researchers found. “The lions in West Africa are essentially gone,” said Pimm. “Only a radical effort can save them at this stage.”
Stuart Pimm is also a member of the Big Cats Initiative Grants Committee and a regular blogger for National Geographic News Watch. We interview him here about the research released this week.
Your study found that the population of wild lions in Africa plunged by two-thirds in 50 years. What’s the methodology to determine the populations then and now? 
Scientists estimated that 50 years ago, approximately 100,000 lions made their home in Africa’s iconic savannahs. This estimate was made using rough calculations of the size of remaining habitat and lion density. Our research suggests that lion populations have experienced a dramatic decline, and numbers have dropped to as low as 32,000 individuals. We compiled all of the most current available estimates of lion numbers and distribution – continentwide reports, country-specific lion conservation strategies and action plans, and newly published lion population surveys. To fill in any gaps, we drew from the knowledge of the co-authors and colleagues working across Africa to conserve lions.
Counting carnivores is a tricky business. Individual identification is a tremendous challenge and requires highresolution cameras or good, unobstructed views in person. They are often shy and cover large distances. Lions are difficult to count even though they are social and sleep most of the day. Only a very few lion populations are known at the individual level, such as Liuwa Plains National Park, Zambia. Individual recognition of every lion in an area requires intense study, significant resources, and low numbers of individuals. Therefore, researchers use a variety of other imperfect techniques to estimate lion population size in all other lion areas. Some more common estimation techniques include spoor tracking or call-up surveys.
What are the main causes of lion decline?
There is a variety of factors leading to lion decline across their range. One of the most important things we identified was habitat loss. People usually think of savannah Africa as being comprised of wilderness, vast open grasslands stretching to the horizon in all directions. However, our analysis showed that from an original area a third larger than the United States, only 25% remains. In comparison, 30% of the world’s original tropical rainforest remain. Most of this reduction has come in the last 50 years due to massive land-use conversion and burgeoning human population growth. Besides habitat loss, another major driver of decline is human-caused mortality. This includes poaching, retaliatory killing, and trophy hunting.
How many of the remaining 32,000 wild lions in Africa are in stable populations in viable habitat? Where are the strongholds?
Our analysis identified only 67 largely isolated areas across the entire African continent where lions might survive. Of these 67 areas, only 10 qualified as strongholds where lions have an excellent chance of survival. These strongholds are located across East and Southern Africa, but importantly no areas in West or Central Africa qualify. Unfortunately this means that for the remaining 32,000 wild lions in Africa, only approximately 24,000 are in populations that can be considered at all secure. More than 5,000 lions are located in small, isolated populations, putting their immediate survival in doubt.
What’s the prognosis for wild lions? Extinction?
The drastic reduction in lion numbers and habitat highlighted by our research is certainly alarming from a conservation standpoint. Yet, African lions are not in immediate danger of extinction. Substantial lion populations exist in large, well-protected areas such as the Serengeti or Kruger ecosystem. Many of the remaining lion populations in East or Southern Africa are in well-protected areas such as national parks and game reserves (although some of these allow hunting). Nevertheless, this should not be used as a blanket statement; there are populations and even countries in these regions that have few or no lions remaining. Overall, lions in West and Central Africa are in the gravest danger of extinction. More than half of the populations vital to lion conservation in these regions (as noted by the IUCN) have been extirpated in the past five years, with several countries losing their lions entirely. According to our research, fewer than 500 lions remain in West Africa, scattered across eight isolated sites. This is of serious concern as these populations contain the most genetically unique lions in all of Africa and are most closely related to the Asiatic lion.
Why is it important that we try to sustain the survival of wild lions in Africa?
Large carnivores play valuable ecological roles in “top-down” structuring of the ecosystem. For instance, removal of lions may allow populations of mid-sized carnivores to explode which would have cascading impacts on other flora and fauna. From an ecological perspective, large carnivores are crucial for balanced, resilient systems. However, the lion is so much more than just the largest carnivore in Africa. It is a powerful cultural and political symbol. Attempting to list all the uses of lions in African proverbs, symbols, names etc. would be a nearly impossible task. Finally, lions are vital to the tourism trade, which in turn is economically critical for many African nations. 
How does your study help conservation of the big cats? 
You cannot protect what you do not know you have. This is a simple but true adage. Our compilation needed to occur in order to prioritize areas for conservation action. With a good map, numbers, and some understanding of connectivity between the lion areas, we now know which populations are threatened with extinction or conversely, which are well connected and well protected.

http://newswatch.nationalgeographic.com/lion-numbers-plunge-as-african-wilderness-succumbs-to-humanpressure/
Large carnivores
Alternativas
Q1629316 Inglês
INSTRUCTIONS – Read the following text carefully and then choose the correct alternatives that answer the questions.
LION NUMBERS PLUNGE AS AFRICAN WILDERNESS SUCCUMBS TO HUMAN PRESSURE

Posted by David Braun of National Geographic on December 6, 2012

Only 32,000 Lions Remain out of 100,000 Roaming Africa in the 1960



The king of the African savannah is in serious trouble because people are taking over the continent’s last patches of wilderness on unprecedented scale, according to a detailed study released this week. 
The most comprehensive assessment of lion (Panthera leo) numbers to date determined that Africa’s once-thriving savannahs are undergoing massive land-use conversion and burgeoning human population growth. The decline has had a significant impact on the lions that make their home in these savannahs; their numbers have dropped to as low as 32,000, down from hundreds of thousands estimated just 50 years ago.
The study, funded in part by the National Geographic Big Cats Initiative, was published online in this week’s journal Biodiversity and Conservation. Some 24,000 of the continent’s remaining lions are primarily in 10 strongholds: 4 in East Africa and 6 in southern Africa, the researchers determined. Over 6,000 of the remaining lions are in populations of doubtful long-term viability. Lion populations in West and central Africa are the most acutely threatened, with many recent local extinctions, even in nominally protected areas.
“These research results confirm the drastic loss of African savannah and the severe decline in the number of remaining lions,” said Big Cats Initiative (BCI) Grants Committee Chair Thomas E. Lovejoy, University Professor for Environmental Science & Public Policy at George Mason University and Biodiversity Chair of The Heinz Center. “Immediate and major action is required to save lion populations in Africa.”
African savannahs are defined by the researchers as those areas that receive between 300 and 1500 mm (approximately 11 to 59 inches) of rain annually. “These savannahs conjure up visions of vast open plains,” said Stuart Pimm, co-author of the paper who holds the Chair of conservation at Duke University. “The reality is that from an original area a third larger than the continental United States, only 25 percent remains.” In comparison, 30 percent of the world’s original rain forests remain.

Lions in West Africa are at highest level of risk, Pimm and the other researchers found. “The lions in West Africa are essentially gone,” said Pimm. “Only a radical effort can save them at this stage.”
Stuart Pimm is also a member of the Big Cats Initiative Grants Committee and a regular blogger for National Geographic News Watch. We interview him here about the research released this week.
Your study found that the population of wild lions in Africa plunged by two-thirds in 50 years. What’s the methodology to determine the populations then and now? 
Scientists estimated that 50 years ago, approximately 100,000 lions made their home in Africa’s iconic savannahs. This estimate was made using rough calculations of the size of remaining habitat and lion density. Our research suggests that lion populations have experienced a dramatic decline, and numbers have dropped to as low as 32,000 individuals. We compiled all of the most current available estimates of lion numbers and distribution – continentwide reports, country-specific lion conservation strategies and action plans, and newly published lion population surveys. To fill in any gaps, we drew from the knowledge of the co-authors and colleagues working across Africa to conserve lions.
Counting carnivores is a tricky business. Individual identification is a tremendous challenge and requires highresolution cameras or good, unobstructed views in person. They are often shy and cover large distances. Lions are difficult to count even though they are social and sleep most of the day. Only a very few lion populations are known at the individual level, such as Liuwa Plains National Park, Zambia. Individual recognition of every lion in an area requires intense study, significant resources, and low numbers of individuals. Therefore, researchers use a variety of other imperfect techniques to estimate lion population size in all other lion areas. Some more common estimation techniques include spoor tracking or call-up surveys.
What are the main causes of lion decline?
There is a variety of factors leading to lion decline across their range. One of the most important things we identified was habitat loss. People usually think of savannah Africa as being comprised of wilderness, vast open grasslands stretching to the horizon in all directions. However, our analysis showed that from an original area a third larger than the United States, only 25% remains. In comparison, 30% of the world’s original tropical rainforest remain. Most of this reduction has come in the last 50 years due to massive land-use conversion and burgeoning human population growth. Besides habitat loss, another major driver of decline is human-caused mortality. This includes poaching, retaliatory killing, and trophy hunting.
How many of the remaining 32,000 wild lions in Africa are in stable populations in viable habitat? Where are the strongholds?
Our analysis identified only 67 largely isolated areas across the entire African continent where lions might survive. Of these 67 areas, only 10 qualified as strongholds where lions have an excellent chance of survival. These strongholds are located across East and Southern Africa, but importantly no areas in West or Central Africa qualify. Unfortunately this means that for the remaining 32,000 wild lions in Africa, only approximately 24,000 are in populations that can be considered at all secure. More than 5,000 lions are located in small, isolated populations, putting their immediate survival in doubt.
What’s the prognosis for wild lions? Extinction?
The drastic reduction in lion numbers and habitat highlighted by our research is certainly alarming from a conservation standpoint. Yet, African lions are not in immediate danger of extinction. Substantial lion populations exist in large, well-protected areas such as the Serengeti or Kruger ecosystem. Many of the remaining lion populations in East or Southern Africa are in well-protected areas such as national parks and game reserves (although some of these allow hunting). Nevertheless, this should not be used as a blanket statement; there are populations and even countries in these regions that have few or no lions remaining. Overall, lions in West and Central Africa are in the gravest danger of extinction. More than half of the populations vital to lion conservation in these regions (as noted by the IUCN) have been extirpated in the past five years, with several countries losing their lions entirely. According to our research, fewer than 500 lions remain in West Africa, scattered across eight isolated sites. This is of serious concern as these populations contain the most genetically unique lions in all of Africa and are most closely related to the Asiatic lion.
Why is it important that we try to sustain the survival of wild lions in Africa?
Large carnivores play valuable ecological roles in “top-down” structuring of the ecosystem. For instance, removal of lions may allow populations of mid-sized carnivores to explode which would have cascading impacts on other flora and fauna. From an ecological perspective, large carnivores are crucial for balanced, resilient systems. However, the lion is so much more than just the largest carnivore in Africa. It is a powerful cultural and political symbol. Attempting to list all the uses of lions in African proverbs, symbols, names etc. would be a nearly impossible task. Finally, lions are vital to the tourism trade, which in turn is economically critical for many African nations. 
How does your study help conservation of the big cats? 
You cannot protect what you do not know you have. This is a simple but true adage. Our compilation needed to occur in order to prioritize areas for conservation action. With a good map, numbers, and some understanding of connectivity between the lion areas, we now know which populations are threatened with extinction or conversely, which are well connected and well protected.

http://newswatch.nationalgeographic.com/lion-numbers-plunge-as-african-wilderness-succumbs-to-humanpressure/
Counting carnivores can be:
Alternativas
Q1629314 Inglês
INSTRUCTIONS – Read the following text carefully and then choose the correct alternatives that answer the questions.
LION NUMBERS PLUNGE AS AFRICAN WILDERNESS SUCCUMBS TO HUMAN PRESSURE

Posted by David Braun of National Geographic on December 6, 2012

Only 32,000 Lions Remain out of 100,000 Roaming Africa in the 1960



The king of the African savannah is in serious trouble because people are taking over the continent’s last patches of wilderness on unprecedented scale, according to a detailed study released this week. 
The most comprehensive assessment of lion (Panthera leo) numbers to date determined that Africa’s once-thriving savannahs are undergoing massive land-use conversion and burgeoning human population growth. The decline has had a significant impact on the lions that make their home in these savannahs; their numbers have dropped to as low as 32,000, down from hundreds of thousands estimated just 50 years ago.
The study, funded in part by the National Geographic Big Cats Initiative, was published online in this week’s journal Biodiversity and Conservation. Some 24,000 of the continent’s remaining lions are primarily in 10 strongholds: 4 in East Africa and 6 in southern Africa, the researchers determined. Over 6,000 of the remaining lions are in populations of doubtful long-term viability. Lion populations in West and central Africa are the most acutely threatened, with many recent local extinctions, even in nominally protected areas.
“These research results confirm the drastic loss of African savannah and the severe decline in the number of remaining lions,” said Big Cats Initiative (BCI) Grants Committee Chair Thomas E. Lovejoy, University Professor for Environmental Science & Public Policy at George Mason University and Biodiversity Chair of The Heinz Center. “Immediate and major action is required to save lion populations in Africa.”
African savannahs are defined by the researchers as those areas that receive between 300 and 1500 mm (approximately 11 to 59 inches) of rain annually. “These savannahs conjure up visions of vast open plains,” said Stuart Pimm, co-author of the paper who holds the Chair of conservation at Duke University. “The reality is that from an original area a third larger than the continental United States, only 25 percent remains.” In comparison, 30 percent of the world’s original rain forests remain.

Lions in West Africa are at highest level of risk, Pimm and the other researchers found. “The lions in West Africa are essentially gone,” said Pimm. “Only a radical effort can save them at this stage.”
Stuart Pimm is also a member of the Big Cats Initiative Grants Committee and a regular blogger for National Geographic News Watch. We interview him here about the research released this week.
Your study found that the population of wild lions in Africa plunged by two-thirds in 50 years. What’s the methodology to determine the populations then and now? 
Scientists estimated that 50 years ago, approximately 100,000 lions made their home in Africa’s iconic savannahs. This estimate was made using rough calculations of the size of remaining habitat and lion density. Our research suggests that lion populations have experienced a dramatic decline, and numbers have dropped to as low as 32,000 individuals. We compiled all of the most current available estimates of lion numbers and distribution – continentwide reports, country-specific lion conservation strategies and action plans, and newly published lion population surveys. To fill in any gaps, we drew from the knowledge of the co-authors and colleagues working across Africa to conserve lions.
Counting carnivores is a tricky business. Individual identification is a tremendous challenge and requires highresolution cameras or good, unobstructed views in person. They are often shy and cover large distances. Lions are difficult to count even though they are social and sleep most of the day. Only a very few lion populations are known at the individual level, such as Liuwa Plains National Park, Zambia. Individual recognition of every lion in an area requires intense study, significant resources, and low numbers of individuals. Therefore, researchers use a variety of other imperfect techniques to estimate lion population size in all other lion areas. Some more common estimation techniques include spoor tracking or call-up surveys.
What are the main causes of lion decline?
There is a variety of factors leading to lion decline across their range. One of the most important things we identified was habitat loss. People usually think of savannah Africa as being comprised of wilderness, vast open grasslands stretching to the horizon in all directions. However, our analysis showed that from an original area a third larger than the United States, only 25% remains. In comparison, 30% of the world’s original tropical rainforest remain. Most of this reduction has come in the last 50 years due to massive land-use conversion and burgeoning human population growth. Besides habitat loss, another major driver of decline is human-caused mortality. This includes poaching, retaliatory killing, and trophy hunting.
How many of the remaining 32,000 wild lions in Africa are in stable populations in viable habitat? Where are the strongholds?
Our analysis identified only 67 largely isolated areas across the entire African continent where lions might survive. Of these 67 areas, only 10 qualified as strongholds where lions have an excellent chance of survival. These strongholds are located across East and Southern Africa, but importantly no areas in West or Central Africa qualify. Unfortunately this means that for the remaining 32,000 wild lions in Africa, only approximately 24,000 are in populations that can be considered at all secure. More than 5,000 lions are located in small, isolated populations, putting their immediate survival in doubt.
What’s the prognosis for wild lions? Extinction?
The drastic reduction in lion numbers and habitat highlighted by our research is certainly alarming from a conservation standpoint. Yet, African lions are not in immediate danger of extinction. Substantial lion populations exist in large, well-protected areas such as the Serengeti or Kruger ecosystem. Many of the remaining lion populations in East or Southern Africa are in well-protected areas such as national parks and game reserves (although some of these allow hunting). Nevertheless, this should not be used as a blanket statement; there are populations and even countries in these regions that have few or no lions remaining. Overall, lions in West and Central Africa are in the gravest danger of extinction. More than half of the populations vital to lion conservation in these regions (as noted by the IUCN) have been extirpated in the past five years, with several countries losing their lions entirely. According to our research, fewer than 500 lions remain in West Africa, scattered across eight isolated sites. This is of serious concern as these populations contain the most genetically unique lions in all of Africa and are most closely related to the Asiatic lion.
Why is it important that we try to sustain the survival of wild lions in Africa?
Large carnivores play valuable ecological roles in “top-down” structuring of the ecosystem. For instance, removal of lions may allow populations of mid-sized carnivores to explode which would have cascading impacts on other flora and fauna. From an ecological perspective, large carnivores are crucial for balanced, resilient systems. However, the lion is so much more than just the largest carnivore in Africa. It is a powerful cultural and political symbol. Attempting to list all the uses of lions in African proverbs, symbols, names etc. would be a nearly impossible task. Finally, lions are vital to the tourism trade, which in turn is economically critical for many African nations. 
How does your study help conservation of the big cats? 
You cannot protect what you do not know you have. This is a simple but true adage. Our compilation needed to occur in order to prioritize areas for conservation action. With a good map, numbers, and some understanding of connectivity between the lion areas, we now know which populations are threatened with extinction or conversely, which are well connected and well protected.

http://newswatch.nationalgeographic.com/lion-numbers-plunge-as-african-wilderness-succumbs-to-humanpressure/
Lions are at highest level of danger at:
Alternativas
Q1629313 Inglês
INSTRUCTIONS – Read the following text carefully and then choose the correct alternatives that answer the questions.
LION NUMBERS PLUNGE AS AFRICAN WILDERNESS SUCCUMBS TO HUMAN PRESSURE

Posted by David Braun of National Geographic on December 6, 2012

Only 32,000 Lions Remain out of 100,000 Roaming Africa in the 1960



The king of the African savannah is in serious trouble because people are taking over the continent’s last patches of wilderness on unprecedented scale, according to a detailed study released this week. 
The most comprehensive assessment of lion (Panthera leo) numbers to date determined that Africa’s once-thriving savannahs are undergoing massive land-use conversion and burgeoning human population growth. The decline has had a significant impact on the lions that make their home in these savannahs; their numbers have dropped to as low as 32,000, down from hundreds of thousands estimated just 50 years ago.
The study, funded in part by the National Geographic Big Cats Initiative, was published online in this week’s journal Biodiversity and Conservation. Some 24,000 of the continent’s remaining lions are primarily in 10 strongholds: 4 in East Africa and 6 in southern Africa, the researchers determined. Over 6,000 of the remaining lions are in populations of doubtful long-term viability. Lion populations in West and central Africa are the most acutely threatened, with many recent local extinctions, even in nominally protected areas.
“These research results confirm the drastic loss of African savannah and the severe decline in the number of remaining lions,” said Big Cats Initiative (BCI) Grants Committee Chair Thomas E. Lovejoy, University Professor for Environmental Science & Public Policy at George Mason University and Biodiversity Chair of The Heinz Center. “Immediate and major action is required to save lion populations in Africa.”
African savannahs are defined by the researchers as those areas that receive between 300 and 1500 mm (approximately 11 to 59 inches) of rain annually. “These savannahs conjure up visions of vast open plains,” said Stuart Pimm, co-author of the paper who holds the Chair of conservation at Duke University. “The reality is that from an original area a third larger than the continental United States, only 25 percent remains.” In comparison, 30 percent of the world’s original rain forests remain.

Lions in West Africa are at highest level of risk, Pimm and the other researchers found. “The lions in West Africa are essentially gone,” said Pimm. “Only a radical effort can save them at this stage.”
Stuart Pimm is also a member of the Big Cats Initiative Grants Committee and a regular blogger for National Geographic News Watch. We interview him here about the research released this week.
Your study found that the population of wild lions in Africa plunged by two-thirds in 50 years. What’s the methodology to determine the populations then and now? 
Scientists estimated that 50 years ago, approximately 100,000 lions made their home in Africa’s iconic savannahs. This estimate was made using rough calculations of the size of remaining habitat and lion density. Our research suggests that lion populations have experienced a dramatic decline, and numbers have dropped to as low as 32,000 individuals. We compiled all of the most current available estimates of lion numbers and distribution – continentwide reports, country-specific lion conservation strategies and action plans, and newly published lion population surveys. To fill in any gaps, we drew from the knowledge of the co-authors and colleagues working across Africa to conserve lions.
Counting carnivores is a tricky business. Individual identification is a tremendous challenge and requires highresolution cameras or good, unobstructed views in person. They are often shy and cover large distances. Lions are difficult to count even though they are social and sleep most of the day. Only a very few lion populations are known at the individual level, such as Liuwa Plains National Park, Zambia. Individual recognition of every lion in an area requires intense study, significant resources, and low numbers of individuals. Therefore, researchers use a variety of other imperfect techniques to estimate lion population size in all other lion areas. Some more common estimation techniques include spoor tracking or call-up surveys.
What are the main causes of lion decline?
There is a variety of factors leading to lion decline across their range. One of the most important things we identified was habitat loss. People usually think of savannah Africa as being comprised of wilderness, vast open grasslands stretching to the horizon in all directions. However, our analysis showed that from an original area a third larger than the United States, only 25% remains. In comparison, 30% of the world’s original tropical rainforest remain. Most of this reduction has come in the last 50 years due to massive land-use conversion and burgeoning human population growth. Besides habitat loss, another major driver of decline is human-caused mortality. This includes poaching, retaliatory killing, and trophy hunting.
How many of the remaining 32,000 wild lions in Africa are in stable populations in viable habitat? Where are the strongholds?
Our analysis identified only 67 largely isolated areas across the entire African continent where lions might survive. Of these 67 areas, only 10 qualified as strongholds where lions have an excellent chance of survival. These strongholds are located across East and Southern Africa, but importantly no areas in West or Central Africa qualify. Unfortunately this means that for the remaining 32,000 wild lions in Africa, only approximately 24,000 are in populations that can be considered at all secure. More than 5,000 lions are located in small, isolated populations, putting their immediate survival in doubt.
What’s the prognosis for wild lions? Extinction?
The drastic reduction in lion numbers and habitat highlighted by our research is certainly alarming from a conservation standpoint. Yet, African lions are not in immediate danger of extinction. Substantial lion populations exist in large, well-protected areas such as the Serengeti or Kruger ecosystem. Many of the remaining lion populations in East or Southern Africa are in well-protected areas such as national parks and game reserves (although some of these allow hunting). Nevertheless, this should not be used as a blanket statement; there are populations and even countries in these regions that have few or no lions remaining. Overall, lions in West and Central Africa are in the gravest danger of extinction. More than half of the populations vital to lion conservation in these regions (as noted by the IUCN) have been extirpated in the past five years, with several countries losing their lions entirely. According to our research, fewer than 500 lions remain in West Africa, scattered across eight isolated sites. This is of serious concern as these populations contain the most genetically unique lions in all of Africa and are most closely related to the Asiatic lion.
Why is it important that we try to sustain the survival of wild lions in Africa?
Large carnivores play valuable ecological roles in “top-down” structuring of the ecosystem. For instance, removal of lions may allow populations of mid-sized carnivores to explode which would have cascading impacts on other flora and fauna. From an ecological perspective, large carnivores are crucial for balanced, resilient systems. However, the lion is so much more than just the largest carnivore in Africa. It is a powerful cultural and political symbol. Attempting to list all the uses of lions in African proverbs, symbols, names etc. would be a nearly impossible task. Finally, lions are vital to the tourism trade, which in turn is economically critical for many African nations. 
How does your study help conservation of the big cats? 
You cannot protect what you do not know you have. This is a simple but true adage. Our compilation needed to occur in order to prioritize areas for conservation action. With a good map, numbers, and some understanding of connectivity between the lion areas, we now know which populations are threatened with extinction or conversely, which are well connected and well protected.

http://newswatch.nationalgeographic.com/lion-numbers-plunge-as-african-wilderness-succumbs-to-humanpressure/
Researchers defined African Savannah as place that:
Alternativas
Q1629312 Inglês
INSTRUCTIONS – Read the following text carefully and then choose the correct alternatives that answer the questions.
LION NUMBERS PLUNGE AS AFRICAN WILDERNESS SUCCUMBS TO HUMAN PRESSURE

Posted by David Braun of National Geographic on December 6, 2012

Only 32,000 Lions Remain out of 100,000 Roaming Africa in the 1960



The king of the African savannah is in serious trouble because people are taking over the continent’s last patches of wilderness on unprecedented scale, according to a detailed study released this week. 
The most comprehensive assessment of lion (Panthera leo) numbers to date determined that Africa’s once-thriving savannahs are undergoing massive land-use conversion and burgeoning human population growth. The decline has had a significant impact on the lions that make their home in these savannahs; their numbers have dropped to as low as 32,000, down from hundreds of thousands estimated just 50 years ago.
The study, funded in part by the National Geographic Big Cats Initiative, was published online in this week’s journal Biodiversity and Conservation. Some 24,000 of the continent’s remaining lions are primarily in 10 strongholds: 4 in East Africa and 6 in southern Africa, the researchers determined. Over 6,000 of the remaining lions are in populations of doubtful long-term viability. Lion populations in West and central Africa are the most acutely threatened, with many recent local extinctions, even in nominally protected areas.
“These research results confirm the drastic loss of African savannah and the severe decline in the number of remaining lions,” said Big Cats Initiative (BCI) Grants Committee Chair Thomas E. Lovejoy, University Professor for Environmental Science & Public Policy at George Mason University and Biodiversity Chair of The Heinz Center. “Immediate and major action is required to save lion populations in Africa.”
African savannahs are defined by the researchers as those areas that receive between 300 and 1500 mm (approximately 11 to 59 inches) of rain annually. “These savannahs conjure up visions of vast open plains,” said Stuart Pimm, co-author of the paper who holds the Chair of conservation at Duke University. “The reality is that from an original area a third larger than the continental United States, only 25 percent remains.” In comparison, 30 percent of the world’s original rain forests remain.

Lions in West Africa are at highest level of risk, Pimm and the other researchers found. “The lions in West Africa are essentially gone,” said Pimm. “Only a radical effort can save them at this stage.”
Stuart Pimm is also a member of the Big Cats Initiative Grants Committee and a regular blogger for National Geographic News Watch. We interview him here about the research released this week.
Your study found that the population of wild lions in Africa plunged by two-thirds in 50 years. What’s the methodology to determine the populations then and now? 
Scientists estimated that 50 years ago, approximately 100,000 lions made their home in Africa’s iconic savannahs. This estimate was made using rough calculations of the size of remaining habitat and lion density. Our research suggests that lion populations have experienced a dramatic decline, and numbers have dropped to as low as 32,000 individuals. We compiled all of the most current available estimates of lion numbers and distribution – continentwide reports, country-specific lion conservation strategies and action plans, and newly published lion population surveys. To fill in any gaps, we drew from the knowledge of the co-authors and colleagues working across Africa to conserve lions.
Counting carnivores is a tricky business. Individual identification is a tremendous challenge and requires highresolution cameras or good, unobstructed views in person. They are often shy and cover large distances. Lions are difficult to count even though they are social and sleep most of the day. Only a very few lion populations are known at the individual level, such as Liuwa Plains National Park, Zambia. Individual recognition of every lion in an area requires intense study, significant resources, and low numbers of individuals. Therefore, researchers use a variety of other imperfect techniques to estimate lion population size in all other lion areas. Some more common estimation techniques include spoor tracking or call-up surveys.
What are the main causes of lion decline?
There is a variety of factors leading to lion decline across their range. One of the most important things we identified was habitat loss. People usually think of savannah Africa as being comprised of wilderness, vast open grasslands stretching to the horizon in all directions. However, our analysis showed that from an original area a third larger than the United States, only 25% remains. In comparison, 30% of the world’s original tropical rainforest remain. Most of this reduction has come in the last 50 years due to massive land-use conversion and burgeoning human population growth. Besides habitat loss, another major driver of decline is human-caused mortality. This includes poaching, retaliatory killing, and trophy hunting.
How many of the remaining 32,000 wild lions in Africa are in stable populations in viable habitat? Where are the strongholds?
Our analysis identified only 67 largely isolated areas across the entire African continent where lions might survive. Of these 67 areas, only 10 qualified as strongholds where lions have an excellent chance of survival. These strongholds are located across East and Southern Africa, but importantly no areas in West or Central Africa qualify. Unfortunately this means that for the remaining 32,000 wild lions in Africa, only approximately 24,000 are in populations that can be considered at all secure. More than 5,000 lions are located in small, isolated populations, putting their immediate survival in doubt.
What’s the prognosis for wild lions? Extinction?
The drastic reduction in lion numbers and habitat highlighted by our research is certainly alarming from a conservation standpoint. Yet, African lions are not in immediate danger of extinction. Substantial lion populations exist in large, well-protected areas such as the Serengeti or Kruger ecosystem. Many of the remaining lion populations in East or Southern Africa are in well-protected areas such as national parks and game reserves (although some of these allow hunting). Nevertheless, this should not be used as a blanket statement; there are populations and even countries in these regions that have few or no lions remaining. Overall, lions in West and Central Africa are in the gravest danger of extinction. More than half of the populations vital to lion conservation in these regions (as noted by the IUCN) have been extirpated in the past five years, with several countries losing their lions entirely. According to our research, fewer than 500 lions remain in West Africa, scattered across eight isolated sites. This is of serious concern as these populations contain the most genetically unique lions in all of Africa and are most closely related to the Asiatic lion.
Why is it important that we try to sustain the survival of wild lions in Africa?
Large carnivores play valuable ecological roles in “top-down” structuring of the ecosystem. For instance, removal of lions may allow populations of mid-sized carnivores to explode which would have cascading impacts on other flora and fauna. From an ecological perspective, large carnivores are crucial for balanced, resilient systems. However, the lion is so much more than just the largest carnivore in Africa. It is a powerful cultural and political symbol. Attempting to list all the uses of lions in African proverbs, symbols, names etc. would be a nearly impossible task. Finally, lions are vital to the tourism trade, which in turn is economically critical for many African nations. 
How does your study help conservation of the big cats? 
You cannot protect what you do not know you have. This is a simple but true adage. Our compilation needed to occur in order to prioritize areas for conservation action. With a good map, numbers, and some understanding of connectivity between the lion areas, we now know which populations are threatened with extinction or conversely, which are well connected and well protected.

http://newswatch.nationalgeographic.com/lion-numbers-plunge-as-african-wilderness-succumbs-to-humanpressure/
The sentence “Immediate and major action is required to save lion populations in Africa.” means that:
Alternativas
Respostas
8321: C
8322: E
8323: A
8324: B
8325: C
8326: C
8327: A
8328: C
8329: A
8330: C
8331: C
8332: B
8333: B
8334: A
8335: A
8336: C
8337: B
8338: D
8339: A
8340: C