Alpine biodiversity and assisted migration: The case of the American pika (Ochotona princeps)

Biodiversity
By: , and 

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Abstract

Alpine mammals are predicted to be among the species most threatened by climate change, due to the projected loss and further fragmentation of alpine habitats. As temperature or precipitation regimes change, alpine mammals may also be faced with insurmountable barriers to dispersal. The slow rate or inability to adjust to rapidly shifting environmental conditions may cause isolated alpine species to become locally extirpated, resulting in reduced biodiversity. One proposed method for mitigating the impacts of alpine species loss is assisted migration. This method, which involves translocating a species to an area with more favourable climate and habitat characteristics, has become the subject of debate and controversy in the conservation community. The uncertainty associated with climate change projections, coupled with the thermal sensitivity of many alpine mammals, makes it difficult to a priori assess the efficacy of this technique as a conservation management tool. Here we present the American pika (Ochotona princeps) as a case study. American pikas inhabit rocky areas throughout the western US, and populations in some mountainous areas have become locally extirpated in recent years. We review known climatic and habitat requirements for this species, and also propose protocols designed to reliably identify favourable relocation areas. We present data related to the physiological constraints of this species and outline specific requirements which must be addressed for translocation of viable populations, including wildlife disease and genetic considerations. Finally, we discuss potential impacts on other alpine species and alpine communities, and overall implications for conserving alpine biodiversity in a changing climate.

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Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Alpine biodiversity and assisted migration: The case of the American pika (Ochotona princeps)
Series title Biodiversity
DOI 10.1080/14888386.2015.1112304
Volume 16
Issue 4
Year Published 2015
Language English
Publisher Taylor & Francis
Publisher location London
Contributing office(s) National Wildlife Health Center
Description 13 p.
First page 1
Last page 13
Country United States
Online Only (Y/N) N
Additional Online Files (Y/N) N