A biomechanical and optimality-based derivation of prey-size dependencies in planktonic prey selection and ingestion rates
نویسندگان
چکیده
منابع مشابه
Coexistence of structured populations with size-based prey selection.
Species with a large adult-offspring size ratio and a preferred predator-prey mass ratio undergo ontogenetic trophic niche shift(s) throughout life. Trophic interactions between such species vary throughout life, resulting in different species-level interaction motifs depending on the maximum adult sizes and population size distributions. We explore the assembly and potential for coexistence of...
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Body size exerts multiple effects on plankton food-web interactions. However, the influence of size structure on trophic transfer remains poorly quantified in the field. Here, we examine how the size diversity of prey (nano-microplankton) and predators (mesozooplankton) influence trophic transfer efficiency (using biomass ratio as a proxy) in natural marine ecosystems. Our results support previ...
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A mathematical model describing the dynamics of a delayed stage structure prey - predator system with prey refuge is considered. The existence, uniqueness and bounded- ness of the solution are discussed. All the feasibl e equilibrium points are determined. The stability analysis of them are investigated. By employ ing the time delay as the bifurcation parame...
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ژورنال
عنوان ژورنال: Marine Ecology Progress Series
سال: 2014
ISSN: 0171-8630,1616-1599
DOI: 10.3354/meps10894