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The impact of increasing temperatures on dormancy duration in Calanus finmarchicus

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Title The impact of increasing temperatures on dormancy duration in Calanus finmarchicus
Names Pierson, James J. (creator)
Batchelder, Harold (creator)
Saumweber, Whitley (creator)
Leising, Andrew (creator)
Runge, Jeffrey (creator)
Date Issued 2013-03-26 (iso8601)
Note To the best of our knowledge, one or more authors of this paper were federal employees when contributing to this work.
This is the publisher’s final pdf. The published article is copyrighted by Oxford University Press and can be found at: http://www.oxfordjournals.org/
Abstract Dormancy is a key life history trait of planktonic calanoid copepods in the genus
Calanus. Empirical evidence suggests that duration of dormancy is controlled by
ambient temperature driving lipid metabolism in individuals. Here, we use the
temperature-dependent metabolic rates of overwintering individuals to show that
increasing temperatures, associated with global climate change over the next
several decades, may reduce dormancy duration for the north Atlantic species C.
finmarchicus by up to 40 days. Our calculations are based on comparing predicted
dormancy duration for individuals of a given size at specific temperatures to dormancy
duration at warmer temperatures and smaller size. We also provide corrections
to the relationship of dormancy duration described by Saumweber and
Durbin [Estimating potential diapause duration in Calanus finmarchicus. Deep
Sea Res. Pt. II., 53, 2597–2617.]. Our calculations indicate that changing temperatures
in the sea may lead to phenological shifts in life histories of C. finmarchicus
and congeners, which may have implications for planktonic food web and trophic
dynamics.
Genre Article
Topic Calanus finmarchicus
Identifier Pierson, J., Batchelder, H., Saumweber, W., Leising, A., & Runge, J. (2013). The impact of increasing temperatures on dormancy duration in calanus finmarchicus. Journal of Plankton Research, 35(3), 504-512. doi:10.1093/plankt/fbt022

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