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Long-term changes in spatial overlap between interacting cod and flounder in the Baltic Sea

Orio, Alessandro and Bergström, Ulf and Florin, Ann-Britt and Šics, Ivo and Casini, Michele (2020). Long-term changes in spatial overlap between interacting cod and flounder in the Baltic Sea. Hydrobiologia. 847 , 2541-2553
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Abstract

The strength of interspecific competition and predator-prey interactions depends on the area of co-occurrence of the interacting species. Therefore, it is necessary to quantify the changes in the spatial overlap of trophically connected species to understand the outcomes of species interactions. In the Baltic Sea, the interplay between cod and flounder has previously been neglected. In this study, we use four decades of data on cod and flounder distributions covering the southern and central Baltic Sea to: (1) model and map the changes in the distributions of the two species using generalized additive models; (2) quantify the temporal changes in the potential competitive and predator-prey interactions between them using spatial overlap indices; (3) relate these changes in overlap to the known dynamics of the different cod and flounder populations in the Baltic Sea. Competition overlap has continuously increased for cod, from the beginning of the time-series. This is a possible cause of the observed decline in feeding levels and body condition of small and intermediate sized cod. Flounder overlap with large cod instead has decreased substantially, suggesting a predation release of flounder, potentially triggering its increase in abundance and distribution range observed in the last decades.

Authors/Creators:Orio, Alessandro and Bergström, Ulf and Florin, Ann-Britt and Šics, Ivo and Casini, Michele
Title:Long-term changes in spatial overlap between interacting cod and flounder in the Baltic Sea
Year of publishing :2020
Volume:847
Page range:2541-2553
Number of Pages:13
Publisher:Springer
ISSN:0018-8158
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 > 4 Agricultural Sciences > 401 Agricultural, Forestry and Fisheries > Fish and Aquacultural Science
Keywords:Cod, Competition, Flounder, Predation, Spatial modeling, Species interaction
URN:NBN:urn:nbn:se:slu:epsilon-p-105375
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-105375
Additional ID:
Type of IDID
DOI10.1007/s10750-020-04272-4
Web of Science (WoS)000530195900001
ID Code:17099
Faculty:NJ - Fakulteten för naturresurser och jordbruksvetenskap
Department:(NL, NJ) > Department of Aquatic Resources
Deposited By: SLUpub Connector
Deposited On:22 Jun 2020 13:20
Metadata Last Modified:16 Aug 2020 18:09

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