Temperature dependence of predation depends on the relative performance of predators and prey

Öhlund, Gunnar; Hedström, Per; Norman, Sven; Hein, Catherine L.; Englund, Göran

doi:10.1098/rspb.2014.2254

Cited by 92 publications

(93 citation statements)

References 39 publications

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“…A potential underlying cause could be low success and attack rates of pike preying on smolts at low temperatures, as shown by Öhlund et al . (). Further, an analysis of bird observation data obtained from the Danish Ornithological Society (http://dofbasen.dk) showed high abundances of goosander mainly until the beginning of April, when the 4‐day mean of water temperature rarely surpassed 7 °C.…”

Section: Discussionmentioning

confidence: 90%

Survival of Migrating Sea Trout (Salmo trutta) Smolts During Their Passage of an Artificial Lake in a Danish Lowland Stream

Schwinn¹,

Aarestrup²,

Baktoft³

et al. 2016

River Research & Apps

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Artificial lake development is often used as a management tool to reduce nutrient runoff to coastal waters. Denmark has restored more than 10 000 ha of wetlands and lakes in the last 14 years as a consequence of ‘Action Plans for the Aquatic Environment’, which aim to meet the demands of the European Union's Water Framework Directive. Juvenile, seaward migrating salmonids are highly affected by impounded waterbodies, as they are subjected to extraordinary high mortalities due to predation and altered habitat. From 2005 to 2015, survival and migration patterns of wild brown trout (Salmo trutta) smolts were investigated by using radio, acoustic and Passive Integrated Transponder telemetry both before and after the development of an artificial lake in a small Danish lowland stream. In 2005 and 2006, before the lake developed, survival was estimated to be 100% in the river stretch where the lake later developed. In 2007 and in the period between 2009 and 2015, mean yearly survival decreased to 26%. Mean time for passing the area increased significantly after the development of the lake from 0.42 to 5.95 days. Generalized additive models were used to model the probability of a successful passage. Water temperature and discharge were key environmental factors affecting survival of the smolts during the passage of the lake. Furthermore, smolt survival was negatively correlated with condition factor. This elevated level of smolt mortality may seriously compromise self‐sustaining anadromous salmonid populations when artificial lakes are developed in connection with rivers. Copyright © 2016 John Wiley & Sons, Ltd.

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Section: Discussionmentioning

confidence: 90%

Survival of Migrating Sea Trout (Salmo trutta) Smolts During Their Passage of an Artificial Lake in a Danish Lowland Stream

Schwinn¹,

Aarestrup²,

Baktoft³

et al. 2016

River Research & Apps

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“…; Sentis, Hemptinne & Brodeur ; Öhlund et al . ). Our results contrast those observed for P. ochraceus whose predation rate increased by 47% in the same temperature range as our study (Gooding, Harley & Tang ).…”

Section: Discussionmentioning

confidence: 97%

Warmer temperatures reduce the influence of an important keystone predator

Bonaviri

Graham

Gianguzza

et al. 2017

Journal of Animal Ecology

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Predator-prey interactions may be strongly influenced by temperature variations in marine ecosystems. Consequently, climate change may alter the importance of predators with repercussions for ecosystem functioning and structure. In North-eastern Pacific kelp forests, the starfish Pycnopodia helianthoides is known to be an important predator of the purple sea urchin Strongylocentrotus purpuratus. Here we investigated the influence of water temperature on this predator-prey interaction by: (i) assessing the spatial distribution and temporal dynamics of both species across a temperature gradient in the northern Channel Islands, California, and (ii) investigating how the feeding rate of P. helianthoides on S. purpuratus is affected by temperature in laboratory tests. On average, at sites where mean annual temperatures were <14 °C, P. helianthoides were common, S. purpuratus was rare and kelp was persistent, whereas where mean annual temperatures exceeded 14 °C, P. helianthoides and kelp were rare and S. purpuratus abundant. Temperature was found to be the primary environmental factor influencing P. helianthoides abundance, and in turn P. helianthoides was the primary determinant of S. purpuratus abundance. In the laboratory, temperatures >16 °C (equivalent to summer temperatures at sites where P. helianthoides were rare) reduced predation rates regardless of predator and prey sizes, although larger sea urchins were consumed only by large starfishes. These results clearly demonstrate that the effect of P. helianthoides on S. purpuratus is strongly mediated by temperature, and that the local abundance and predation rate of P. helianthoides on sea urchins will likely decrease with future warming. A reduction in top-down control on sea urchins, combined with other expected impacts of climate change on kelp, poses significant risks for the persistence of kelp forests in the future.

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“…Rather, they are affected by processes such as competition and predation. There are, therefore, growing efforts through reviews, meta‐analyses, and theoretical and empirical models to evaluate how temperature affects interactions, especially predator–prey dynamics (Montagnes et al , Gilman et al , Rall et al , Dell et al , Kordas et al , Sentis et al , Urban et al , Wisz et al , Abbot et al , Amarasekare , Fussmann et al , Gilbert et al , Tomlinson et al , Öhlund et al ). Although divergent views arise across such studies, collectively they recognise that temperature drives predator–prey interactions and appreciate the consequences to landscape ecology, ecosystem dynamics, and management strategies.…”

mentioning

confidence: 99%

Spatial extinction or persistence: landscape‐temperature interactions perturb predator–prey dynamics

Salt

Bulit²,

Zhang

et al. 2016

Ecography

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Recognising that species interact across a range of spatial scales, we explore how landscape structure interacts with temperature to influence persistence. Specifically, we recognise that few studies indicate thermal shifts as the proximal cause of species extinctions; rather, species interactions exacerbated by temperature result in extinctions. Using microcosm‐based experiments, as models of larger landscape processes, we test hypotheses that would be problematic to address through field work. A text‐book predator–prey system (the ciliates Didinium and Paramecium) was used to compare three landscapes: an unfragmented landscape subjected to uniform temperatures (10, 20, 30°C); a fragmented landscape (potentially hosting metapopulations) subjected to these three temperatures; and a fragmented landscape subjected to a spatial temperature gradient (∼ 10 to 30°C) – despite the prevalence of natural temperature ecoclines this is the first time such an analysis has been conducted. Initial thermal response‐analysis (growth, mortality, and movement measured between 10 and 30°C) suggested that as temperature increased, the predator might drive the prey to extinction. Thermal preferences (measured at 5 temperatures between 10 and 30°C), indicated that both predator and prey preferred warmer temperatures, with the predator exhibiting the stronger preference, suggesting that cooler regions might act as a prey‐refuge. The landscape level observations, however, did not entirely support the predictions. First, in the unfragmented landscape, increased temperature led to extinctions, but at the highest temperature (where the predator growth can be reduced) the prey survived. Second, at high temperatures the fragmented landscape failed to host metapopulations that would allow predator–prey persistence. Third, the thermal ecocline did not provide heterogeneity that improved stability; rather it forced both species to occupy a smaller realized space, leading toward extinctions. These findings reveal that temperature‐impacted rates and temperature preferences combine to drive predator–prey dynamics and persistence across landscapes.

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Temperature dependence of predation depends on the relative performance of predators and prey

Cited by 92 publications

References 39 publications

Survival of Migrating Sea Trout (Salmo trutta) Smolts During Their Passage of an Artificial Lake in a Danish Lowland Stream

Survival of Migrating Sea Trout (Salmo trutta) Smolts During Their Passage of an Artificial Lake in a Danish Lowland Stream

Warmer temperatures reduce the influence of an important keystone predator

Spatial extinction or persistence: landscape‐temperature interactions perturb predator–prey dynamics

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