New study documents population declines in Great Basin
U.S. Geological Survey scientists have filled in another piece in the pika puzzle, finding that changes in distribution of populations of the tiny mammals are mainly influenced by climatic factors. The new study, published in The Journal of Mammalogy, helps show how global warming will affect the species.
Several previous research efforts have been inconclusive, and one study from Colorado suggests that pikas are holding their own in the highest reaches of the central and southern Rocky Mountains. But the new study, conducted in 2014 and 2015 at 910 sites, showed widespread reduction in pika range in three mountainous regions including the Great Basin, southern Utah and northeastern California.
‘Reducing immediate impacts is essential to tackling the biodiversity crisis’
About 75 percent of the world’s threatened species are at risk because of human impacts to their environment and unsustainable harvesting, according to a new study in the journal Nature.
“Addressing these old foes of overharvesting and agricultural activities are key to turning around the biodiversity extinction crisis” said lead author Sean Maxwell of the University of Queensland, “This must be at the forefront of the conservation agenda.”
Scientists from the University of Queensland, the Wildlife Conservation Society and the International Union for Conservation of Nature studied 8,688 species on the IUCN Red List. They found that 72 percent of species are imperiled by unsustainable harvesting. The production of food, fodder, fiber and fuel crops; livestock farming; aquaculture; and the cultivation of trees imperils another 62 percent. By comparison, 19 percent are considered threatened by climate change. Continue reading “New report IDs biggest global threats to wildlife”→
Continued illegal gill net fishing cited in push for ban on Mexican seafood
In what could be a last-ditch effort to save imperiled vaquita in the Gulf of California, conservation advocates are urging the Obama administration to launch economic sanctions against Mexico to halt that country’s trade in totoaba. According to the Center for Biological Diversity, the sanctions would be justified because Mexico is violating the Convention on International Trade in Endangered Species (CITES) by not enforcing the ban on totoaba trade.
The bluefin tuna population in the Pacific Ocean has dropped so low that a coalition of conservation groups have petitioned the National Marine Fisheries Service to protect the species under the Endangered Species Act.
According to the petition, the population has declined more than 97 percent since fishing began, largely because countries have failed to reduce fishing enough to protect the iconic species, a luxury item on sushi menus.
“Without help, we may see the last Pacific bluefin tuna sold off and lost to extinction,” said Catherine Kilduff of the Center for Biological Diversity. “New tagging research has shed light on the mysteries of where majestic bluefin tuna reproduce and migrate, so we can help save this important species. Protecting this incredible fish under the Endangered Species Act is the last hope, because fisheries management has failed to keep them off the path toward extinction.” Continue reading “Endangered species status sought for bluefin tuna”→
Activists say public was short-changed on comment period
Wildlife advocates are going to court to challenge a proposed grizzly hunting plan in Wyoming. A lawsuit filed last week alleges that he Wyoming Game and Fish Commission illegally fast-tracked approval of the plan without allowing adequate public comment.
The approval would authorize the state’s first trophy hunt of grizzly bears in 40 years, but the public only had 30 days to review and comment on the plan — far too short to be able to evaluate the biological consequences of the proposed hunt. The commission simultaneously adopted a tri-state memorandum of agreement with Idaho and Montana to formalize quotas for grizzly hunts, allocating over 50 percent of the quota to Wyoming. Continue reading “Wildlife: Wyoming grizzly hunting plan challenged in court”→