Effects of prey density, temperature and predator diversity on nonconsumptive predator-driven mortlality in a freshwater food web

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60077344%3A_____%2F17%3A00501981" target="_blank" >RIV/60077344:_____/17:00501981 - isvavai.cz</a>

Result on the web

<a href="https://www.nature.com/articles/s41598-017-17998-4" target="_blank" >https://www.nature.com/articles/s41598-017-17998-4</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1038/s41598-017-17998-4" target="_blank" >10.1038/s41598-017-17998-4</a>

Result language

angličtina

Original language name

Effects of prey density, temperature and predator diversity on nonconsumptive predator-driven mortlality in a freshwater food web

Original language description

Nonconsumptive predator-driven mortality (NCM), defined as prey mortality due to predation that does not result in prey consumption, is an underestimated component of predator-prey interactions with possible implications for population dynamics and ecosystem functioning. However, the biotic and abiotic factors influencing this mortality component remain largely unexplored, leaving a gap in our understanding of the impacts of environmental change on ecological communities. We investigated the effects of temperature, prey density, and predator diversity and density on NCM in an aquatic food web module composed of dragonfly larvae (Aeshna cyanea) and marbled crayfish (Procambarus fallax f. virginalis) preying on common carp (Cyprinus carpio) fry. We found that NCM increased with prey density and depended on the functional diversity and density of the predator community. Warming significantly reduced NCM only in the dragonfly larvae but the magnitude depended on dragonfly larvae density. Our results indicate that energy transfer across trophic levels is more efficient due to lower NCM in functionally diverse predator communities, at lower resource densities and at higher temperatures. This suggests that environmental changes such as climate warming and reduced resource availability could increase the efficiency of energy transfer in food webs only if functionally diverse predator communities are conserved.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10618 - Ecology

Project

<a href="/en/project/GA14-29857S" target="_blank" >GA14-29857S: Impact of predation risk and habitat complexity on the dynamics of macroinvertebrate community assembly in freshwater</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2017

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Scientific Reports

ISSN

2045-2322

e-ISSN

—

Volume of the periodical

7

Issue of the periodical within the volume

DEC 22

Country of publishing house

GB - UNITED KINGDOM

Number of pages

9

Pages from-to

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UT code for WoS article

000418644100034

EID of the result in the Scopus database

2-s2.0-85039153176