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Title: Apparent climate-mediated loss and fragmentation of core habitat of the American pika in the Northern Sierra Nevada, California, USA

Journal Article · · PLoS ONE
ORCiD logo [1];  [2];  [3]
  1. Univ. of California, Santa Cruz, CA (United States). Dept. of Ecology and Evolutionary Biology; California Department of Fish and Wildlife, Rancho Cordova, CA (United States). North Central Region
  2. California Department of Fish and Wildlife, Rancho Cordova, CA (United States). North Central Region
  3. USDA Forest Service, Livermore, CA (United States); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

Contemporary climate change has been widely documented as the apparent cause of range contraction at the edge of many species distributions but documentation of climate change as a cause of extirpation and fragmentation of the interior of a species’ core habitat has been lacking. Here in this paper, we report the extirpation of the American pika (Ochotona princeps), a temperature-sensitive small mammal, from a 165-km2 area located within its core habitat in California’s Sierra Nevada mountains. While sites surrounding the area still maintain pikas, radiocarbon analyses of pika fecal pellets recovered within this area indicate that former patch occupancy ranges from before 1955, the beginning of the atmospheric spike in radiocarbon associated with above ground atomic bomb testing, to c. 1991. Despite an abundance of suitable rocky habitat climate warming appears to have precipitated their demise. Weather station data reveal a 1.9°C rise in local temperature and a significant decline in snowpack over the period of record, 1910–2015, pushing pika habitat into increasingly tenuous climate conditions during the period of extirpation. This is among the first accounts of an apparently climate-mediated, modern extirpation of a species from an interior portion of its geographic distribution, resulting in habitat fragmentation, and is the largest area yet reported for a modern-era pika extirpation. Our finding provides empirical support to model projections, indicating that even core areas of species habitat are vulnerable to climate change within a timeframe of decades.

Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC52-07NA27344
OSTI ID:
1395312
Journal Information:
PLoS ONE, Vol. 12, Issue 8; ISSN 1932-6203
Publisher:
Public Library of ScienceCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 26 works
Citation information provided by
Web of Science

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Cited By (8)

Drought‐mediated extinction of an arid‐land amphibian: insights from a spatially explicit dynamic occupancy model journal February 2019
Distribution, climatic relationships, and status of American pikas ( Ochotona princeps ) in the Great Basin, USA journal January 2018
Museum specimens of terrestrial vertebrates are sensitive indicators of environmental change in the Anthropocene
  • Schmitt, C. Jonathan; Cook, Joseph A.; Zamudio, Kelly R.
  • Philosophical Transactions of the Royal Society B: Biological Sciences, Vol. 374, Issue 1763 https://doi.org/10.1098/rstb.2017.0387
journal November 2018
Getting chased up the mountain: High elevation may limit performance and fitness characters in a montane insect journal February 2019
Geographical variation in the influence of habitat and climate on site occupancy turnover in American pika ( Ochotona princeps ) journal June 2018
Adaptive population divergence and directional gene flow across steep elevational gradients in a climate-sensitive mammal journal May 2018
A diet rich in C 3 plants reveals the sensitivity of an alpine mammal to climate change journal May 2018
Identification of a contact zone and hybridization for two subspecies of the American pika (Ochotona princeps) within a single protected area journal July 2018

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