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Ecological Responses to Extreme Flooding Events: A Case Study with a Reintroduced Bird.


ABSTRACT: In recent years numerous studies have documented the effects of a changing climate on the world's biodiversity. Although extreme weather events are predicted to increase in frequency and intensity and are challenging to organisms, there are few quantitative observations on the survival, behaviour and energy expenditure of animals during such events. We provide the first data on activity and energy expenditure of birds, Eurasian cranes Grus grus, during the winter of 2013-14, which saw the most severe floods in SW England in over 200 years. We fitted 23 cranes with telemetry devices and used remote sensing data to model flood dynamics during three consecutive winters (2012-2015). Our results show that during the acute phase of the 2013-14 floods, potential feeding areas decreased dramatically and cranes restricted their activity to a small partially unflooded area. They also increased energy expenditure (+15%) as they increased their foraging activity and reduced resting time. Survival did not decline in 2013-14, indicating that even though extreme climatic events strongly affected time-energy budgets, behavioural plasticity alleviated any potential impact on fitness. However under climate change scenarios such challenges may not be sustainable over longer periods and potentially could increase species vulnerability.

SUBMITTER: Soriano-Redondo A 

PROVIDER: S-EPMC4922006 | biostudies-literature | 2016 Jun

REPOSITORIES: biostudies-literature

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Ecological Responses to Extreme Flooding Events: A Case Study with a Reintroduced Bird.

Soriano-Redondo Andrea A   Bearhop Stuart S   Cleasby Ian R IR   Lock Leigh L   Votier Stephen C SC   Hilton Geoff M GM  

Scientific reports 20160627


In recent years numerous studies have documented the effects of a changing climate on the world's biodiversity. Although extreme weather events are predicted to increase in frequency and intensity and are challenging to organisms, there are few quantitative observations on the survival, behaviour and energy expenditure of animals during such events. We provide the first data on activity and energy expenditure of birds, Eurasian cranes Grus grus, during the winter of 2013-14, which saw the most s  ...[more]

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