Document Detail


Multigenerational exposure to ocean acidification during food limitation reveals consequences for copepod scope for growth and vital rates.
MedLine Citation:
PMID:  25225957     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
The copepod Calanus finmarchicus is a key component of northern Atlantic food webs, linking energy-transfer from phytoplankton to higher trophic levels. We examined the effect of different ocean acidification (OA) scenarios (i.e. ambient, 1080, 2080 and 3080 μatm CO2) over two subsequent generations under limited food availability. Determination of metabolic- and feeding rates, and estimations of the scope for growth, suggests that negative effects observed on vital rates (ontogenetic development, somatic growth, fecundity) may be a consequence of energy budget constraints due to higher maintenance costs under high pCO2-environments. A significant delay in development rate among the P generation animals exposed to 2080 μatm CO2, but not in the following F1 generation under the same conditions, suggests that C. finmarchicus may have adaptive potential to withstand the direct long term effects of even the more pessimistic future OA-scenarios, but underlines the importance of trans-generation experiments. The results also indicate that in a more acidic ocean, increased energy expenditure through rising respiration could lower the energy transfer to higher trophic levels and thus hamper the productivity of the northern Atlantic ecosystem.μμμμ
Authors:
Sindre Andre Pedersen; Ole Jacob Håkedal; Iurgi Salaberria; Alice Tagliati; Liv Marie Gustavson; Bjorn Munro Jenssen; Anders Johny Olsen; Dag Altin
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2014-9-16
Journal Detail:
Title:  Environmental science & technology     Volume:  -     ISSN:  1520-5851     ISO Abbreviation:  Environ. Sci. Technol.     Publication Date:  2014 Sep 
Date Detail:
Created Date:  2014-9-16     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0213155     Medline TA:  Environ Sci Technol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
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