Data from: Resource levels and prey state influence antipredator behavior and the strength of nonconsumptive predator effects
The risk of predation can drive trophic cascades by causing prey to engage in antipredator behavior (e.g. reduced feeding), but these behaviors can be energetically costly for prey. The effects of predation risk on prey (nonconsumptive effects, NCEs) and emergent indirect effects on basal resources...
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ftdryad:oai:v1.datadryad.org:10255/dryad.107857 2023-05-15T17:35:55+02:00 Data from: Resource levels and prey state influence antipredator behavior and the strength of nonconsumptive predator effects Matassa, Catherine M. Donelan, Sarah C. Luttbeg, Barney Trussell, Geoffrey C. North Atlantic New England Gulf of Maine United States of America 2016-01-21T17:24:53Z http://hdl.handle.net/10255/dryad.107857 https://doi.org/10.5061/dryad.7sr33 unknown doi:10.5061/dryad.7sr33/1 doi:10.1111/oik.03165 doi:10.5061/dryad.7sr33 Matassa CM, Donelan SC, Luttbeg B, Trussell GC (2016) Resource levels and prey state influence antipredator behavior and the strength of nonconsumptive predator effects. Oikos 125(10: 1478-1488. http://hdl.handle.net/10255/dryad.107857 predation risk rocky intertidal trophic cascade nonconsumptive effect trait-mediated indirect interaction food chain Article 2016 ftdryad https://doi.org/10.5061/dryad.7sr33 https://doi.org/10.5061/dryad.7sr33/1 https://doi.org/10.1111/oik.03165 2020-01-01T15:30:24Z The risk of predation can drive trophic cascades by causing prey to engage in antipredator behavior (e.g. reduced feeding), but these behaviors can be energetically costly for prey. The effects of predation risk on prey (nonconsumptive effects, NCEs) and emergent indirect effects on basal resources should therefore depend on the ecological context (e.g. resource abundance, prey state) in which prey manage growth/predation risk tradeoffs. Despite an abundance of behavioral research and theory examining state-dependent responses to risk, there is a lack of empirical data on state-dependent NCEs and their impact on community-level processes. We used a rocky intertidal food chain to test model predictions for how resources levels and prey state (age/size) shape the magnitude of NCEs. Risk cues from predatory crabs (Carcinus maenas) caused juvenile and sub-adult snails (Nucella lapillus) to increase their use of refuge habitats and decrease their growth and per capita foraging rates on barnacles (Semibalanus balanoides). Increasing resource levels (high barnacle density) and prey state (sub-adults) enhanced the strength of NCEs. Our results support predictions that NCEs will be stronger in resource-rich systems that enhance prey state and suggest that the demographic composition of prey populations will influence the role of NCEs in trophic cascades. Contrary to theory, however, we found that resources and prey state had little to no effect on snails in the presence of predation risk. Rather, increases in NCE strength arose because of the strong positive effects of resources and prey state on prey foraging rates in the absence of risk. Hence, a common approach to estimating NCE strength – integrating measurements of prey traits with and without predation risk into a single metric – may mask the underlying mechanisms driving variation in the strength and relative importance of NCEs in ecological communities. Article in Journal/Newspaper North Atlantic Nucella lapillus Dryad Digital Repository (Duke University) |
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Open Polar |
collection |
Dryad Digital Repository (Duke University) |
op_collection_id |
ftdryad |
language |
unknown |
topic |
predation risk rocky intertidal trophic cascade nonconsumptive effect trait-mediated indirect interaction food chain |
spellingShingle |
predation risk rocky intertidal trophic cascade nonconsumptive effect trait-mediated indirect interaction food chain Matassa, Catherine M. Donelan, Sarah C. Luttbeg, Barney Trussell, Geoffrey C. Data from: Resource levels and prey state influence antipredator behavior and the strength of nonconsumptive predator effects |
topic_facet |
predation risk rocky intertidal trophic cascade nonconsumptive effect trait-mediated indirect interaction food chain |
description |
The risk of predation can drive trophic cascades by causing prey to engage in antipredator behavior (e.g. reduced feeding), but these behaviors can be energetically costly for prey. The effects of predation risk on prey (nonconsumptive effects, NCEs) and emergent indirect effects on basal resources should therefore depend on the ecological context (e.g. resource abundance, prey state) in which prey manage growth/predation risk tradeoffs. Despite an abundance of behavioral research and theory examining state-dependent responses to risk, there is a lack of empirical data on state-dependent NCEs and their impact on community-level processes. We used a rocky intertidal food chain to test model predictions for how resources levels and prey state (age/size) shape the magnitude of NCEs. Risk cues from predatory crabs (Carcinus maenas) caused juvenile and sub-adult snails (Nucella lapillus) to increase their use of refuge habitats and decrease their growth and per capita foraging rates on barnacles (Semibalanus balanoides). Increasing resource levels (high barnacle density) and prey state (sub-adults) enhanced the strength of NCEs. Our results support predictions that NCEs will be stronger in resource-rich systems that enhance prey state and suggest that the demographic composition of prey populations will influence the role of NCEs in trophic cascades. Contrary to theory, however, we found that resources and prey state had little to no effect on snails in the presence of predation risk. Rather, increases in NCE strength arose because of the strong positive effects of resources and prey state on prey foraging rates in the absence of risk. Hence, a common approach to estimating NCE strength – integrating measurements of prey traits with and without predation risk into a single metric – may mask the underlying mechanisms driving variation in the strength and relative importance of NCEs in ecological communities. |
format |
Article in Journal/Newspaper |
author |
Matassa, Catherine M. Donelan, Sarah C. Luttbeg, Barney Trussell, Geoffrey C. |
author_facet |
Matassa, Catherine M. Donelan, Sarah C. Luttbeg, Barney Trussell, Geoffrey C. |
author_sort |
Matassa, Catherine M. |
title |
Data from: Resource levels and prey state influence antipredator behavior and the strength of nonconsumptive predator effects |
title_short |
Data from: Resource levels and prey state influence antipredator behavior and the strength of nonconsumptive predator effects |
title_full |
Data from: Resource levels and prey state influence antipredator behavior and the strength of nonconsumptive predator effects |
title_fullStr |
Data from: Resource levels and prey state influence antipredator behavior and the strength of nonconsumptive predator effects |
title_full_unstemmed |
Data from: Resource levels and prey state influence antipredator behavior and the strength of nonconsumptive predator effects |
title_sort |
data from: resource levels and prey state influence antipredator behavior and the strength of nonconsumptive predator effects |
publishDate |
2016 |
url |
http://hdl.handle.net/10255/dryad.107857 https://doi.org/10.5061/dryad.7sr33 |
op_coverage |
North Atlantic New England Gulf of Maine United States of America |
genre |
North Atlantic Nucella lapillus |
genre_facet |
North Atlantic Nucella lapillus |
op_relation |
doi:10.5061/dryad.7sr33/1 doi:10.1111/oik.03165 doi:10.5061/dryad.7sr33 Matassa CM, Donelan SC, Luttbeg B, Trussell GC (2016) Resource levels and prey state influence antipredator behavior and the strength of nonconsumptive predator effects. Oikos 125(10: 1478-1488. http://hdl.handle.net/10255/dryad.107857 |
op_doi |
https://doi.org/10.5061/dryad.7sr33 https://doi.org/10.5061/dryad.7sr33/1 https://doi.org/10.1111/oik.03165 |
_version_ |
1766135216488841216 |