Results 11 to 20 of about 4,759 (257)
Human disturbance increases trophic niche overlap in terrestrial carnivore communities. [PDF]
Proc Natl Acad Sci U S A, 2020 Significance Niche theory posits that species must limit overlap in the use of space, time, or resources to minimize competition. However, human disturbances are rapidly altering ecosystems with uncertain consequences for niche partitioning. Dietary niche partitioning is the primary way many species limit interspecific competition, and it is ...
Manlick PJ, Pauli JN.
europepmc +4 more sources
Trophic niche overlap between coyotes and gray foxes in a temperate forest in Durango, Mexico. [PDF]
PLoS One, 2021 Resource partitioning, and especially dietary partitioning, is a mechanism that has been studied for several canid species as a means to understand competitive relationships and the ability of these species to coexist. Coyotes (Canis latrans) and gray foxes (Urocyon cinereoargenteus) are two canid species that are widely distributed, in Mexico, and ...
Rodríguez-Luna CR +3 more
europepmc +5 more sources
Trophic niche overlap between round sardinella (Sardinella aurita) and sympatric pelagic fish species in the Western Mediterranean. [PDF]
Ecol Evol, 2021 AbstractThe northward expansion of round sardinella (Sardinella aurita) in the Mediterranean Sea, together with declines and fluctuations in biomass and landings of European sardine (Sardina pilchardus) and anchovy (Engraulis encrasicolus) observed in recent decades, may suggest potential inter‐specific competition in the pelagic domain.
Bachiller E +8 more
europepmc +7 more sources
Trophic Niches, Trophic Positions, and Niche Overlaps between Non-Native and Native Fish Species in a Subalpine Lake [PDF]
Water, 2020 In the last century, Italian freshwater ecosystems have been invaded by several non-native fish species. In the subalpine Lake Mergozzo (northern Italy), several recently introduced non-native species dramatically expanded their populations. We used carbon and nitrogen stable isotopes to describe the isotopic niches and trophic positions of native and ...
Cicala +12 more
openaire +5 more sources
High Trophic Niche Overlap between a Native and Invasive Mink Does Not Drive Trophic Displacement of the Native Mink during an Invasion Process. [PDF]
Animals (Basel), 2020 The pressure elicited by invasive species on native species significantly increases with the increase of the overlap of their ecological niches. Still, the specific mechanisms of the trophic displacement of native species during the invasion process are unclear.
García K +6 more
europepmc +6 more sources
High trophic niche overlap in mixed‐species colonies using artificial nests
Ibis, 2022 Although successful at recovering endangered populations, conservation actions based on nest provisioning seldom consider how they shape the composition of communities and alter interspecific interactions. Specifically, the extent to which dietary overlap within these communities may affect the conservation of target species has rarely been assessed ...
João Gameiro +5 more
openaire +4 more sources
Trophic niche size and overlap decreases with increasing ecosystem productivity
Oikos, 2020 The production and transfer of biomass through trophic relationships is a core ecosystem function. The movement of energy through the food web is mediated by organisms operating in their niche space. For generalists, the size of this niche space is inherently plastic and changes in response to available food sources.
Justin S. Lesser +4 more
openaire +2 more sources
Competition and resource breadth shape niche variation and overlap in multiple trophic dimensions [PDF]
Proceedings of the Royal Society B: Biological Sciences, 2019 Competition plays a central role in the maintenance of biodiversity. A backbone of classic niche theory is that local coexistence of competitors is favoured by the contraction or divergence of species' niches. However, this effect should depend on the diversity of resources available in the local environment, particularly when resources vary in ...
Raul Costa-Pereira +3 more
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Diversity, 2022 Niche partitioning studies are essential to understand the mechanisms that allow ecologically similar species to coexist. The Rhone streber (Zingel asper) and the European bullhead (Cottus gobio) are both benthic riverine fishes that consume ...
Kurt Villsen +7 more
doaj +1 more source
Trophic Niche Overlap between Invasive and Indigenous Fish in a Northwest Reservoir of China [PDF]
Water, 2021 The Kizil reservoir in the Tarim River basin is an important habitat for the native Schizothoracinae fish (including Aspiorhynchus laticeps, Schizothorax biddulphi, Schizothorax eurystomus, Schizothorax intermedius and Schizothorax barbatus). Unfortunately, these species are threatened by many exotic fish, such as Ctenopharyngodon idellus, Silurus ...
Jie Wei +4 more
openaire +1 more source