Trophic overlap between expanding and contracting fish predators in a range margin undergoing change. [PDF]
Sci Rep, 2018 AbstractClimate change is predicted to cause a freshening of the Baltic Sea, facilitating range expansions of freshwater species and contractions of marine. Resident marine flounders (Platichthys flesus) and expansive freshwater roach (Rutilus rutilus) are dominant consumers in the Baltic Sea sublittoral where they occur in partial sympatry.
Westerbom M +3 more
europepmc +5 more sources
Human disturbance increases trophic niche overlap in terrestrial carnivore communities [PDF]
Proceedings of the National Academy of Sciences, 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.
Philip J. Manlick, Jonathan N. Pauli
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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
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High trophic niche overlap in mixed‐species colonies using artificial nests [PDF]
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
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Feeding habits and trophic niche overlap in a Carnivora community of Hungary [PDF]
Acta Theriologica, 1999 The seasonal feeding habits of the red fox Vulpes vulpes (Linnaeus, 1758), the stone marten Martes foina (Erxleben, 1777), the stoat Mustela erminea Linnaeus, 1758, the badger Meles meles (Linnaeus, 1758) and the otter Lutra lutra(Linnaeus, 1758) were studied in south-west Hungary, in the course of four years.
Lanszki, J. +3 more
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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
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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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High trophic overlap within the seabird community of Argentinean Patagonia: a multiscale approach [PDF]
Journal of Animal Ecology, 2004 Summary Food web interactions in animal communities can be investigated through the measurement of stable isotopes (e.g. δ15N, δ13C). We used this approach in a community of 14 species of seabirds breeding on the Argentinean Patagonian coast. Tissue samples were collected from nestling and adult seabirds, as well as prey, during three consecutive ...
Forero, Manuela G. +5 more
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Trophic ecology and niche overlap of two sympatric species of Rhamdia (Siluriformes, Heptapteridae) from northeast Oaxaca, Mexico [PDF]
Neotropical Biology and ConservationThe trophic ecology of fishes in the genus Rhamdia remains poorly reported. Here, we aim to describe the diet composition and infer the trophic levels, niche breadth, and niche overlap between Rhamdia guatemalensis and Rhamdia laticauda in northeast ...
César Camilo Julián-Caballero +3 more
doaj +3 more sources
Community-level trophic characteristics and interactions between native and non-native fish: The example of the Lower Pearl River Basin of China [PDF]
NeoBiotaAquatic ecosystems can harbour more than one non-native fish species and this can represent a threat due to trophic interactions with native fishes. However, research on interactions amongst multiple co-occurring native and non-native fish remains scarce.
Hui Wei +9 more
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