Comment to Hansson, S. et al. (2017) : "Competition for the fish - fish extraction from the Baltic Sea by humans, aquatic mammals, and birds", with special reference to cormorants, perch, and pikeperch

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Heikinheimo , O , Lehtonen , H & Lehikoinen , A 2018 , ' Comment to Hansson, S. et al. (2017) : "Competition for the fish - fish extraction from the Baltic Sea by humans, aquatic mammals, and birds", with special reference to cormorants, perch, and pikeperch ' , ICES Journal of Marine Science , vol. 75 , no. 5 , pp. 1832-1836 . https://doi.org/10.1093/icesjms/fsy054

Title: Comment to Hansson, S. et al. (2017) : "Competition for the fish - fish extraction from the Baltic Sea by humans, aquatic mammals, and birds", with special reference to cormorants, perch, and pikeperch
Author: Heikinheimo, Outi; Lehtonen, Hannu; Lehikoinen, Aleksi
Contributor: University of Helsinki, Ecosystems and Environment Research Programme
University of Helsinki, Finnish Museum of Natural History
Date: 2018
Language: eng
Number of pages: 5
Belongs to series: ICES Journal of Marine Science
ISSN: 1054-3139
URI: http://hdl.handle.net/10138/259794
Abstract: Hansson et al. (2017) concluded that competition between fisheries and piscivorous mammals and birds exists in the Baltic Sea, based on the estimation of biomass of the fish species consumed in the ICES subdivisions. We compared their results to the data and scientific knowledge from the coastal waters of Finland and show that local differences in fisheries, fish assemblages and abundance of predators should be taken into account to reliably assess potential competition. Hansson et al. (2017) did not include the piscivorous fish in their analysis, but these may be the most important predators. In the Archipelago Sea, for instance, the consumption by fish predators is considerably larger than that of cormorants.
Subject: Baltic Sea
cormorants
fisheries
food consumption
Perca fluviatilis
predators
Sander lucioperca
ARCHIPELAGO SEA
STIZOSTEDION-LUCIOPERCA
PHALACROCORAX-CARBO
SANDER-LUCIOPERCA
SOUTHWEST COAST
CLASS STRENGTH
FLUVIATILIS
PREDATION
CATCHES
STOCKS
1172 Environmental sciences
1181 Ecology, evolutionary biology
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