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Linking consumer physiological status to food-web structure and prey food value in the Baltic Sea

Karlson, Agnes M. L. and Gorokhova, Elena and Gårdmark, Anna and Hekim, Zeynep and Casini, Michele and Albertsson, Jan and Sundelin, Brita and Karlsson, Olle and Bergström, Lena (2020). Linking consumer physiological status to food-web structure and prey food value in the Baltic Sea. AMBIO: A Journal of the Human Environment. 49 , 391-406
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Abstract

Declining physiological status in marine top consumers has been observed worldwide. We investigate changes in the physiological status and population/community traits of six consumer species/groups in the Baltic Sea (1993-2014), spanning four trophic levels and using metrics currently operational or proposed as indicators of food-web status. We ask whether the physiological status of consumers can be explained by food-web structure and prey food value. This was tested using partial least square regressions with status metrics for gray seal, cod, herring, sprat and the benthic predatory isopod Saduria as response variables, and abundance and food value of their prey, abundance of competitors and predators as predictors. We find evidence that the physiological status of cod, herring and sprat is influenced by competition, predation, and prey availability; herring and sprat status also by prey size. Our study highlights the need for management approaches that account for species interactions across multiple trophic levels.

Authors/Creators:Karlson, Agnes M. L. and Gorokhova, Elena and Gårdmark, Anna and Hekim, Zeynep and Casini, Michele and Albertsson, Jan and Sundelin, Brita and Karlsson, Olle and Bergström, Lena
Title:Linking consumer physiological status to food-web structure and prey food value in the Baltic Sea
Year of publishing :2020
Volume:49
Page range:391-406
Number of Pages:16
Publisher:Springer
Associated Programs and Other Stakeholders:SLU - Environmental assessment > Programme Coastal and sea areas
ISSN:0044-7447
Language:English
Publication Type:Journal article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 1 Natural sciences > 105 Earth and Related Environmental Sciences > Environmental Sciences (social aspects to be 507)
(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Ecology
Keywords:Benthic-pelagic coupling, Benthivore, Ecological indicator, Long-term time series, Piscivore, Zooplanktivore
URN:NBN:urn:nbn:se:slu:epsilon-p-103005
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-103005
Additional ID:
Type of IDID
DOI10.1007/s13280-019-01201-1
Web of Science (WoS)000512058200002
ID Code:16720
Faculty:NJ - Fakulteten för naturresurser och jordbruksvetenskap
Department:(NL, NJ) > Department of Aquatic Resources
Deposited By: SLUpub Connector
Deposited On:30 Mar 2020 14:10
Metadata Last Modified:16 Aug 2020 17:50

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