Hunters, disease and habitat loss are decimating our closest living relatives--chimpanzees, orangutans, gorillas and bonobos.
On land, the huge patterns of habitat loss have been offset by gains in food production.
In the short term, he said, habitat loss, invasive species and resource scarcity pose the gravest threats.
Habitat loss, pollution, climate change and competition from invasive species have all reduced North American bird populations.
Deforestation and habitat loss in Virunga because of illegal charcoal production continue to threaten key gorilla habitat.
Numbers of the mammals in the area declined because of habitat loss and being hunted by American mink.
Among the many possible contributing factors that the report cited are habitat loss, pesticide use, climate change, and introduced pathogens.
There is as yet no modern hero able to still the pace of habitat loss or prevent invasion from rival species.
Perhaps a few hundred remain in the forested highlands of Laos and Cambodia but they too are threatened by hunting and habitat loss.
Common toads are believed to be declining across the UK because of habitat loss, according to amphibian and reptile conservation group Froglife.
Over the last century bat numbers in Britain declined because of habitat loss and they are now on the European Protected Species List.
Two-thirds of the world's polar bear populations could face local extinctions within 45 years due to habitat loss, the National Resources Defense Council says.
Plant diversity is being destroyed at a greater rate than ever before and much of this is due to habitat loss through changes in land use.
Scientists report that many types of amphibians, especially frogs, are in a steep global decline likely caused by a mix of habitat loss, climate change, pollution and a virulent fungus.
The bay checkerspot butterfly, for instance, seemed secure in its habitat the 1, 200-acre Jasper Ridge Biological Preserve but went extinct due to habitat loss outside the preserve and to increasing climactic variability.
The polar bear is certainly mentioned as being vulnerable to habitat loss caused by global warming, but again, the polar bear is not included in this study of mammals of (sub)arctic Europe.
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"This loss of over half of initial cover is of great concern, signifying habitat loss for the tens of thousands of species associated with tropical coral reefs, " the authors wrote in their study.
But the U.S. argued that parts from polar bears are traded among 70 countries and that trade encourages kills that, coupled with the habitat loss, put stress on populations that will cause them to shrink.
Prof Lee added that human-induced pressures, such as hunting, along with projected climate change and habitat loss, have the potential to change the dynamics of elephant populations and, jeopardise the long-term future of the species.
Unless action is taken now, the consequences of our activities are at a high risk of causing, through the combined effects of climate change, overexploitation, pollution and habitat loss, the next globally significant extinction event in the ocean.
The Intergovernmental Oceanographic Commission of UNESCO (UNESCO-IOC) is part of a powerful coalition of governments, international organizations, civil society groups and private interests that are joining together under the banner of a Global Partnership for Oceans to address the blatant need for coordinated, global action and confront widely documented problems of over-fishing, marine degradation, and habitat loss.
In fact, according to the New York State Biodiversity Research Institute, that man-caused influence comes in fifth behind habitat degradation and loss, non-native invasive species, pollution, and overuse of resources.
One is the loss of habitat as forests are chopped down to make way for factories, mines and farms.
Water vole numbers have crashed due to predation and loss of habitat.
Their numbers are in decline because of loss of habitat, but if the survey reveals more about their numbers and habits, action can be taken to help.
Conservationists say that high levels of exploitation, loss of habitat and habitat degradation has led to the species experiencing a "significant population reduction" over the past 20-30 years.
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He said the main cause of decline in wild bees, such as mining and mason species, was loss of habitat due to a variety of reasons including urban development.
Loss of habitat and prey, coupled with unsubstantiated fears inspired by children's' books and myths about the danger predators pose to human life has led to their near extinction in Europe.
Climate change, loss of habitat and other stressors might therefore not only change sex ratios among various species, but these factors might also later subdue male sexual displays and affect female choosiness of mates.
Of the four global regions inhabited by primates, the worst hit is Madagascar, where loss of habitat to traditional slash-and-burn agriculture has left some lemur species, such as Perrier's sifaka, stranded in tiny areas of forest.
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