NDLI: Caloric content of dominant benthic species from the northern Bering and Chukchi Seas: historical comparisons and the effects of preservation

Content Provider	Springer Nature Link
Author	Hondolero, Dominic Bluhm, Bodil A. Iken, Katrin
Copyright Year	2011
Abstract	Energy density of a prey item provides information about the nutrition of a predator. Here, we provide data on energy content of 24 common benthic taxa (18 epifauna and six infauna) from the northern Bering and Chukchi Seas. Mollusks (both bivalves and gastropods) and amphipods had the highest caloric content of the taxa investigated. In light of changing environmental conditions and benthic communities in the Arctic, we compared present-day caloric content of several taxa with measurements conducted for the same taxa in the 1970s. In most cases, caloric content did not differ between historic and present-day values but was higher in two out of seven comparisons for both formalin-preserved samples and frozen materials. We also examined the effect of preservation methods (frozen vs. formalin-preserved) on the caloric content for seven epifaunal taxa. In three of the seven taxa, formalin-preserved specimens had significantly higher energy densities than frozen specimens. These data should make investigators aware of the opportunities and also possible limitations of including energy density values derived in different decades and from different preservation types into their calculations, although more comprehensive and time-controlled studies are needed to generate possible corrections factors.
Starting Page	637
Ending Page	644
Page Count	8
File Format	PDF
ISSN	07224060
Journal	Polar Biology
Volume Number	35
Issue Number	4
e-ISSN	14322056
Language	English
Publisher	Springer-Verlag
Publisher Date	2011-09-28
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Caloric content Benthos Preservation effects Arctic Bering Sea Chukchi Sea Plant Sciences Oceanography Microbiology Zoology Ecology
Content Type	Text
Resource Type	Article
Subject	Agricultural and Biological Sciences

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