Sentences with phrase «pika populations»
The phrase "pika populations" refers to the number and distribution of pikas, which are small mammal species related to rabbits. It indicates how many pikas live in a certain area and how they are spread out within that region. Full definition
She is a co-founder of Cascades Pika Watch in Oregon, a collaborative citizen science program to monitor the status and distribution of pika populations in the Pacific Northwest.
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The drier and lower elevation sites in northwestern Nevada showed losses of pika populations.
Hik, who studies a cousin of the American pika — the collared pika — in the central Yukon, saw pika populations plummet during the warm winters from 1998 to 2000.
More than a third of documented pika populations in the Great Basin mountains of Nevada and southern Oregon have gone extinct in the past century amid rising temperatures.
Over the past ten years extinction rates have increased by nearly five times for pika populations in the Great Basin region of the US.
Beever, who has studied pika population data going back to 1898, said pika populations have shrunk in places that were warmest in summer.
New research indicates that pika populations are developing more resilience to increases in temperature than previous models had predicted.
Although concerned by the report, some scientists said it was premature to blame the drop in the pika population on global warming, because the new study did not prove that the animals» decline was temperature - related.