Predominantly Terrestrial Foraging and Reproductive Gains From a High Trophic Level Diet in Roof‐Nesting Herring Gulls (Larus argentatus) [PDF]
Ecology and EvolutionWild animal species often use human‐modified environments for foraging and reproduction, but this may require dietary diversification with fitness consequences.
Simon F. Allen +11 more
doaj +2 more sources
Trophic assimilation efficiency markedly increases at higher trophic levels in four-level host-parasitoid food chain [PDF]
, 2016 Trophic assimilation efficiency (conversion of resource biomass into consumer biomass) is thought to be a limiting factor for food chain length in natural communities.
A Moser (16226732) +3 more
core +9 more sources
Seasonal Hydrology Restructures Basal Carbon Pathways in a Lower Yangtze River Fish Food Web: A Stable-Isotope Baseline for the Fishing-Ban Era [PDF]
BiologySeasonal hydrology reshapes large-river food webs by altering habitat connectivity and basal resource availability. Trophic baselines from before the 2021 Yangtze ten-year fishing ban are now valuable because monitoring has shifted from fish abundance ...
Ya Zhang +4 more
doaj +2 more sources
Coupling low and high trophic levels models: Towards a pathways-orientated approach for end-to-end models [PDF]
, 2009 Existing models of marine ecosystems address specific issues related to the bottom-up forcing of production or to the top-down effects of fishing on a limited range of the trophic spectrum.
Maury, Olivier +3 more
core +1 more source
Trophic structure in a seabird host-parasite food web: insights from stable isotope analyses [PDF]
, 2010 Ecological studies on food webs rarely include parasites, partly due to the complexity and dimensionality of host-parasite interaction networks. Multiple co-occurring parasites can show different feeding strategies and thus lead to complex and cryptic ...
Gómez-Díaz Elena +3 more
core +1 more source
Feeding and growth variations affect δ13C and δ15N budgets during ontogeny in a lepidopteran larva
Peer Community Journal, 2023 Isotopes are widely used in ecology to study food webs and physiology. The fractionation observed between trophic levels in nitrogen and carbon isotopes, explained by isotopic biochemical selectivity, is subject to important within-trophic level ...
Charberet, Samuel M. +4 more
doaj +1 more source
Trophic interactions of meso- and macrozooplankton and fish in the Iceland Sea as evaluated by fatty acid and stable isotope analysis [PDF]
, 2012 A trophic study was carried out in August of 2007 and 2008 on the pelagic ecosystem in the Subarctic Iceland Sea. Carbon and nitrogen stable isotopes and fatty acid biomarkers were used to study trophic linkages and the trophic ecology of the most ...
Falk Petersen, Stig +3 more
core +1 more source
Marine and Fishery Sciences, 2021 Food habits and diet composition of Patagonian flounder Paralichthys patagonicus (Jordan, 1889) were studied on the basis of stomach content analyses from 828 specimens (512 females, 304 males, 12 unsexed) collected during 16 commercial cruises between ...
Gonzalo H. Troccoli +4 more
doaj +1 more source
Trophic coherence determines food-web stability [PDF]
, 2014 Why are large, complex ecosystems stable? Both theory and simulations of current models predict the onset of instability with growing size and complexity, so for decades it has been conjectured that ecosystems must have some unidentified structural ...
Johnson, Samuel +6 more
core +1 more source
Understanding patterns and processes in models of trophic cascades [PDF]
, 2013 Climate fluctuations and human exploitation are causing global changes in nutrient enrichment of terrestrial and aquatic ecosystems and declining abundances of apex predators. The resulting trophic cascades have had profound effects on food webs, leading
Speirs, Douglas +8 more
core +1 more source