Results 21 to 30 of about 277,393 (289)
The dynamic trophic niche of an island bird of prey. [PDF]
Ecol Evol, 2020 AbstractOptimal foraging theory predicts an inverse relationship between the availability of preferred prey and niche width in animals. Moreover, when individuals within a population have identical prey preferences and preferred prey is scarce, a nested pattern of trophic niche is expected if opportunistic and selective individuals can be identified ...
Balza U +5 more
europepmc +6 more sources
Estimation of trophic niches in myrmecophagous spider predators [PDF]
Scientific Reports, 2020 AbstractAmong spiders, taxonomically the most diversified group of terrestrial predators, only a few species are stenophagous and feed on ants. The levels of stenophagy and ant-specialisation vary among such species. To investigate whether stenophagy is only a result of a local specialisation both fundamental and realised trophic niches need to be ...
Dušátková, Lenka Petráková +4 more
openaire +3 more sources
Ecology and Evolution, 2022 The trophic interactions between consumers and resources play a vital role in the stability of communities. In river systems, fragmentation of natural habitats and environmental changes alters the energy basis and community composition, consequently ...
Huijun Ru +5 more
doaj +1 more source
Stable isotopes are quantitative indicators of trophic niche. [PDF]
Ecol Lett, 2019 AbstractHette‐Tronquart (2019, Ecol. Lett.) raises three concerns about our interpretation of stable isotope data in Sheppard et al. (2018, Ecol. Lett., 21, 665). We feel that these concerns are based on comparisons that are unreasonable or ignore the ecological context from which the data were collected.
Marshall HH +5 more
europepmc +6 more sources
Frontiers in Marine Science, 2022 Sciaenid fishes are usually associated with large freshwater inputs and are the most important economic fish on the coastal shelf off mainland China.
Jing Wang +12 more
doaj +1 more source
Trophic niche variation across the pan-Arctic coastal continuum. [PDF]
PLoS OneWe analyzed stable carbon and nitrogen isotope values (δ 13 C and δ 15 N, respectively) for pan-Arctic coastal primary producers and consumers to detect large-scale regional trends both temporally and spatially.
McTigue ND +15 more
europepmc +3 more sources
Trophic strategies explain the ocean niches of small eukaryotic phytoplankton [PDF]
Proceedings of the Royal Society B: Biological Sciences, 2022 A large fraction of marine primary production is performed by diverse small protists, and many of these phytoplankton are phagotrophic mixotrophs that vary widely in their capacity to consume bacterial prey. Prior analyses suggest that mixotrophic protists as a group vary in importance across ocean environments, but the mechanisms ...
Kyle F. Edwards +4 more
openaire +2 more sources
Sources of intraspecific variation in the isotopic niche of a semi-aquatic predator in a human-modified landscape [PDF]
PeerJ, 2023 Intraspecific variation modulates patterns of resource use by species, potentially affecting the structure and stability of food webs. In human-modified landscapes, habitat disturbance modifies trophic interactions and intraspecific niche variation ...
André Costa Pereira +2 more
doaj +2 more sources
Diversity, 2022 Rockfish (genus Sebastes) assemblages can inform mechanisms of coexistence and maintenance of diversity in ecological communities. Coexistence theory characterizes ecological assemblages as following either a deterministic niche differentiation model, or
Andrew D. Suchomel, Mark C. Belk
doaj +1 more source
Frontiers in Ecology and Evolution, 2021 According to the niche variation hypothesis (NVH), the populations with wider niches are phenotypically more variable than those with narrow niches. Giller expanded the NVH, suggesting that the niche width, morphological variation, and genetic diversity ...
Wenjing Li +7 more
doaj +1 more source