Projected impacts of 21st century climate change on diapause in Calanus finmarchicus

© 2016 John Wiley & Sons Ltd.

Bibliographische Detailangaben
Veröffentlicht in:Global change biology. - 1999. - 22(2016), 10 vom: 16. Okt., Seite 3332-40
1. Verfasser: Wilson, Robert J (VerfasserIn)
Weitere Verfasser: Banas, Neil S, Heath, Michael R, Speirs, Douglas C
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2016
Zugriff auf das übergeordnete Werk:Global change biology
Schlagworte:Journal Article Calanus finmarchicus climate change copepods deep-water temperature diapause dormancy macroecology overwintering
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520 |a Diapause plays a key role in the life cycle of high latitude zooplankton. During diapause, animals avoid starving in winter by living in deep waters where metabolism is lower and met by lipid reserves. Global warming is therefore expected to shorten the maximum potential diapause duration by increasing metabolic rates and by reducing body size and lipid reserves. This will alter the phenology of zooplankton, impact higher trophic levels and disrupt biological carbon pumps. Here, we project the impacts of climate change on the key North Atlantic copepod Calanus finmarchicus under IPCC RCP 8.5. Potential diapause duration is modelled in relation to body size and overwintering temperature. The projections show pronounced geographic variations. Potential diapause duration reduces by more than 30% in the Western Atlantic, whereas in the key overwintering centre of the Norwegian Sea it changes only marginally. Surface temperature rises, which reduce body size and lipid reserves, will have a similar impact to deep-water changes on diapause in many regions. Because deep-water warming lags that at the surface, animals in the Labrador Sea could offset warming impacts by diapausing in deeper waters. However, the ability to control diapause depth may be limited 
650 4 |a Journal Article 
650 4 |a Calanus finmarchicus 
650 4 |a climate change 
650 4 |a copepods 
650 4 |a deep-water temperature 
650 4 |a diapause 
650 4 |a dormancy 
650 4 |a macroecology 
650 4 |a overwintering 
700 1 |a Banas, Neil S  |e verfasserin  |4 aut 
700 1 |a Heath, Michael R  |e verfasserin  |4 aut 
700 1 |a Speirs, Douglas C  |e verfasserin  |4 aut 
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