Community structure and collapses in multichannel food webs: Role of consumer body sizes and mesohabitat productivities

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12310%2F21%3A43903015" target="_blank" >RIV/60076658:12310/21:43903015 - isvavai.cz</a>
Alternative codes found
RIV/60077344:_____/21:00542923
Result on the web
<a href="https://onlinelibrary.wiley.com/doi/epdf/10.1111/ele.13772" target="_blank" >https://onlinelibrary.wiley.com/doi/epdf/10.1111/ele.13772</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1111/ele.13772" target="_blank" >10.1111/ele.13772</a>

Result language
angličtina
Original language name
Community structure and collapses in multichannel food webs: Role of consumer body sizes and mesohabitat productivities
Original language description
Multichannel food webs are shaped by the ability of apex predators to link asymmetric energy flows in mesohabitats differing in productivity and community traits. While body size is a fundamental trait underlying life histories and demography, its implications for structuring multichannel food webs are unexplored. To fill this gap, we develop a model that links population responses to predation, and resource availability to community-level patterns, using a tri-trophic food web model with two populations of intermediate consumers and a size-selective top predator. We show that asymmetries in mesohabitat productivities and consumer body sizes drive food web structure, merging previously separate theory on apparent competition and emergent Allee effects (i.e. abrupt population collapses) of top predators. Our results yield theoretical support for empirically observed stability of asymmetric multichannel food webs and discover three novel types of emergent Allee effects involving intermediate consumers, multiple populations or multiple alternative stable states.
Czech name
—
Czech description
—

Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
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
S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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