A bioenergetic framework for the temperature dependence of trophic interactions

Ecology Letters, Journal Year: 2014, Volume and Issue: 17(8), P. 902 - 914

Published: June 3, 2014

Changing temperature can substantially shift ecological communities by altering the strength and stability of trophic interactions. Because many rates are constrained temperature, new approaches required to understand how simultaneous changes in multiple alter relative performance species their We develop an energetic approach identify relationship between biomass fluxes standing across levels. Our links dynamics measure temperature-dependent interactions determine these food web stability. It accomplishes this using as a common currency isolating three processes that all consumer-resource interactions: accumulation resource, resource consumption consumer mortality. Using framework, we clarify when alters ratios, equilibrium resilience, variability, extinction risk transient vs. dynamics. Finally, characterise key asymmetries responses produce distinct dynamic behaviours they likely emerge. Overall, our framework provides mechanistic more unified understanding dependence terms rates, ratios

Language: Английский

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What is a Trophic Cascade?

Trends in Ecology & Evolution, Journal Year: 2016, Volume and Issue: 31(11), P. 842 - 849

Published: Sept. 20, 2016

Language: Английский

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Restoring Yellowstone’s aspen with wolves

Biological Conservation, Journal Year: 2007, Volume and Issue: 138(3-4), P. 514 - 519

Published: June 29, 2007

Language: Английский

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Subsidy hypothesis and strength of trophic cascades across ecosystems

Ecology Letters, Journal Year: 2008, Volume and Issue: 11(11), P. 1147 - 1156

Published: Aug. 18, 2008

Abstract Ecosystems are differentially open to subsidies of energy, material and organisms. This fundamental ecosystem attribute has long been recognized but the influence this property on community regulation not investigated. We propose that environmental may explain variation in strength trophic cascades among ecosystems. Simply because gravity, we should predict systems with convex profiles receive low amounts whereas concave act as spatial attractors, high subsidies. The subsidy hypothesis states ecosystems allochthonous inputs will experience strongest cascades. To test hypothesis, derive models investigate effect location magnitude Predictions from our support highlight need consider flows.

Language: Английский

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The Ecological Role of Sharks on Coral Reefs

Trends in Ecology & Evolution, Journal Year: 2016, Volume and Issue: 31(5), P. 395 - 407

Published: March 12, 2016

Language: Английский

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