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Can size distributions of European lake fish communities be predicted by trophic positions of their fish species?

van Dorst, Renee M. and Argillier, Christine and Brucet, Sandra and Holmgren, Kerstin and Volta, Pietro and Winfield, Ian J. and Mehner, Thomas (2022). Can size distributions of European lake fish communities be predicted by trophic positions of their fish species? Ecology and Evolution. 12 :7 , e9087
[Research article]

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Abstract

An organism's body size plays an important role in ecological interactions such as predator-prey relationships. As predators are typically larger than their prey, this often leads to a strong positive relationship between body size and trophic position in aquatic ecosystems. The distribution of body sizes in a community can thus be an indicator of the strengths of predator-prey interactions. The aim of this study was to gain more insight into the relationship between fish body size distribution and trophic position in a wide range of European lakes. We used quantile regression to examine the relationship between fish species' trophic position and their log-transformed maximum body mass for 48 fish species found in 235 European lakes. Subsequently, we examined whether the slopes of the continuous community size distributions, estimated by maximum likelihood, were predicted by trophic position, predator-prey mass ratio (PPMR), or abundance (number per unit effort) of fish communities in these lakes. We found a positive linear relationship between species' maximum body mass and average trophic position in fishes only for the 75% quantile, contrasting our expectation that species' trophic position systematically increases with maximum body mass for fish species in European lakes. Consequently, the size spectrum slope was not related to the average community trophic position, but there were negative effects of community PPMR and total fish abundance on the size spectrum slope. We conclude that predator-prey interactions likely do not contribute strongly to shaping community size distributions in these lakes.

Authors/Creators:van Dorst, Renee M. and Argillier, Christine and Brucet, Sandra and Holmgren, Kerstin and Volta, Pietro and Winfield, Ian J. and Mehner, Thomas
Title:Can size distributions of European lake fish communities be predicted by trophic positions of their fish species?
Series Name/Journal:Ecology and Evolution
Year of publishing :2022
Volume:12
Number:7
Article number:e9087
Number of Pages:11
Publisher:WILEY
ISSN:2045-7758
Language:English
Publication Type:Research 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 > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Ecology
(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 401 Agricultural, Forestry and Fisheries > Fish and Aquacultural Science
Keywords:body size, community size spectrum, ecological interactions, fish, predator-prey interactions, trophic level
URN:NBN:urn:nbn:se:slu:epsilon-p-118475
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-118475
Additional ID:
Type of IDID
DOI10.1002/ece3.9087
Web of Science (WoS)000825777400001
ID Code:28550
Faculty:NJ - Fakulteten för naturresurser och jordbruksvetenskap
Department:(NL, NJ) > Department of Aquatic Resources
Deposited By: SLUpub Connector
Deposited On:25 Aug 2022 10:25
Metadata Last Modified:25 Aug 2022 10:31

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