2018
DOI: 10.1002/ecs2.2081
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Size‐dependent prey availability affects diet and performance of predatory fish at sea: a case study of Atlantic salmon

Abstract: Citation: Jacobson, P., A. G ardmark, J. € Ostergren, M. Casini, and M. Huss. 2018. Size-dependent prey availability affects diet and performance of predatory fish at sea: a case study of Atlantic salmon. Ecosphere 9(1):e02081. 10.1002/ecs2.2081Abstract. Identifying factors determining the performance of individuals is an essential part of resolving what drives population dynamics. For species undergoing ontogenetic shifts in resource and habitat use, this entails assessing individual performance in all habita… Show more

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Cited by 28 publications
(35 citation statements)
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“…Such feeding behavior has empirical support for e.g. Atlantic salmon ( Salmo salar L.) (45) and Atlantic cod (27, 28). Thus, the model used here generally predicts lower persistence of predators in warmer environments, and importantly, that both predator densities and mean community body size do not necessarily decline gradually with temperature but can exhibit sudden collapses.…”
Section: Discussionmentioning
confidence: 97%
“…Such feeding behavior has empirical support for e.g. Atlantic salmon ( Salmo salar L.) (45) and Atlantic cod (27, 28). Thus, the model used here generally predicts lower persistence of predators in warmer environments, and importantly, that both predator densities and mean community body size do not necessarily decline gradually with temperature but can exhibit sudden collapses.…”
Section: Discussionmentioning
confidence: 97%
“…Such feeding behaviour has empirical support, for example in Atlantic salmon ( Salmo salar L.) (Jacobson et al . ) and Atlantic cod (van Leeuwen et al . ; Gårdmark et al .…”
Section: Discussionmentioning
confidence: 99%
“…Our study complements these earlier studies, showing that distribution at sea varies with body size, both within and between populations. Why individuals of different body size feed in different areas of the Baltic Sea could be due to shifts in abiotic ( e.g ., temperature preference; Barbeaux & Hollowed, , Morita et al ., , Otero et al ., ) and biotic ( e.g ., prey availability; Jacobson et al ., , Kallio‐Nyberg et al ., ) requirements over ontogeny. Size‐specific differences in distribution are important to consider as body size is a key trait governing how fish interact with prey (Jacobson et al ., , Mittelbach & Persson, , Scharf et al ., ), mortality risk (Lundvall et al ., , Sogard, ) and recruitment to size‐selective fisheries.…”
Section: Discussionmentioning
confidence: 99%
“…Why individuals of different body size feed in different areas of the Baltic Sea could be due to shifts in abiotic ( e.g ., temperature preference; Barbeaux & Hollowed, , Morita et al ., , Otero et al ., ) and biotic ( e.g ., prey availability; Jacobson et al ., , Kallio‐Nyberg et al ., ) requirements over ontogeny. Size‐specific differences in distribution are important to consider as body size is a key trait governing how fish interact with prey (Jacobson et al ., , Mittelbach & Persson, , Scharf et al ., ), mortality risk (Lundvall et al ., , Sogard, ) and recruitment to size‐selective fisheries. That individuals from different populations occupy and feed in different areas at sea, even when of similar size, could be due to genetically controlled distribution patterns (Kallio‐Nyberg & Ikonen, , Putman et al ., , Quinn et al ., , Royce et al ., ); e.g ., via evolutionary adaption to local feeding conditions (Fraser et al ., ).…”
Section: Discussionmentioning
confidence: 99%
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