climate change effects on predator/prey interactions: how can we ...

climate change effects on predator/prey interactions: how can we ... climate change effects on predator/prey interactions: how can we ...

25.01.2015 Views

Adaptive Research Framework 1. Prioritize species of concern (e.g., Ecology) a. Pika are habitat specialists and they can’t escape to higher ground! - vulnerable montane mammals if temperatures increase the predicted 3 0 C (McDonald and Brown 1992) b. Keystone consumer: Pika influence alpine plant composition, reduce inter-specific competition in plants c. Many predators consume pikas d. Loss of pika leads to trophic cascades

Adaptive Research Framework 2. Prioritize mechanisms of ong>changeong> affecting species (Physiology and botany) a. Pika are limited in physiological ability to deal with heat - Increased temps reduce foraging times b. Reduced snow pack ong>changeong> plant composition - Plant community pika not evolved to exploit c. Lack of livestock grazing associated with higher probability of local persistence (Beever et al. 2003)

Adaptive Research Framework<br />

1. Prioritize species of c<strong>on</strong>cern (e.g., Ecology)<br />

a. Pika are habitat specialists and they <strong>can</strong>’t escape to<br />

higher ground!<br />

- vulnerable m<strong>on</strong>tane mammals if temperatures increase the<br />

predicted 3 0 C (McD<strong>on</strong>ald and Brown 1992)<br />

b. Keyst<strong>on</strong>e c<strong>on</strong>sumer: Pika influence alpine plant<br />

compositi<strong>on</strong>, reduce inter-specific competiti<strong>on</strong> in<br />

plants<br />

c. Many <strong>predator</strong>s c<strong>on</strong>sume pikas<br />

d. Loss of pika leads to trophic cascades

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