On the evolution of trophic position [PDF]
Ecology Letters, 2021 The trophic structure of food webs is primarily determined by the variation in trophic position among species and individuals. Temporal dynamics of food web structure are central to our understanding of energy and nutrient fluxes in changing environments,
Blake Matthews +2 more
exaly +6 more sources
Trophic position determines the persistence of neotropical understory birds after forest disturbance [PDF]
Ecology and EvolutionHabitat loss and degradation are key drivers of the current biodiversity crisis. Most research focuses on the question of which traits allow species to persist in degraded habitats.
Bernhard Paces +5 more
doaj +3 more sources
Vertical Stratification Increases the Capacity of Morphological Traits to Predict Trophic Position in Neotropical Ants [PDF]
Ecology and EvolutionMorphology is a key functional trait that influences the ecophysiology of organisms. The use of morphological traits for understanding functional ecology is common in studies of ants, especially relating to their feeding biology.
Jésica Vieira +5 more
doaj +2 more sources
Trophic Position Stability of Benthic Organisms in a Changing Food Web of an Arctic Fjord Under the Pressure of an Invasive Predatory Snow Crab, Chionoecetes opilio [PDF]
BiologyThe introduction of a large predatory snow crab, Chionoecetes opilio, into the Kara Sea is a unique situation where the impact of an invasive species affecting an otherwise undisturbed ecosystem can be observed unhindered by other ecosystem stressors ...
Anna K. Zalota +7 more
doaj +2 more sources
Advancing Amino Acid Isotope‐Inferred Trophic Ecology in an Apex Predator: Insights From a Data‐Rich Killer Whale Population [PDF]
Ecology and EvolutionAmino acid‐specific nitrogen isotope analysis (δ15N‐AA) is increasingly used to infer trophic ecology, yet remains poorly validated in marine predators. We analyzed bulk tissue δ15N (15N/14N) and δ13C (13C/12C), and δ15N‐AA in 105 skin samples collected ...
Eve Jourdain +7 more
doaj +2 more sources
Frontiers in Marine Science, 2020 In polar ecology, zooplankton diets and survival rates vary according to the seasonality of solar radiation and oceanographic conditions. Each zooplankton species has evolved feeding strategies to survive in the diet-limited conditions of the “polar ...
Hyuntae Choi +5 more
doaj +3 more sources
Combining space use with diet data to investigate foraging tactics of black bears in response to the pulsed availability of migratory caribou calves. [PDF]
PLoS ONEMigratory caribou (Rangifer tarandus) is a key component of the arctic food web. Female caribou typically gather in late spring to give birth, creating a predictable, ephemeral resource pulse that can influence consumer behavior.
Linda Nowack +7 more
doaj +2 more sources
Eutrophication induces shifts in the trophic position of invertebrates in aquatic food webs [PDF]
Ecology, 2021 Jef Huisman +2 more
exaly +2 more sources
Environment International, 2021 Top predators are used as indicators of contaminant trends across space and time. However, signals are integrated over complex food webs, and variation in diet may confound such signals.
Kyle H. Elliott +2 more
doaj +1 more source
Trophic hierarchies illuminated via amino acid isotopic analysis. [PDF]
PLoS ONE, 2013 Food web ecologists have long sought to characterize the trophic niches of animals using stable isotopic analysis. However, distilling trophic position from isotopic composition has been difficult, largely because of the variability associated with ...
Shawn A Steffan +7 more
doaj +1 more source