Results 11 to 20 of about 21,213 (294)

Exploring the isotopic niche: isotopic variance, physiological incorporation, and the temporal dynamics of foraging [PDF]

Frontiers in Ecology and Evolution, 2016
Consumer foraging behaviors are dynamic, changing in response to prey availability, seasonality, competition, and even the consumer's physiological state.
Justin Douglas Yeakel, Justin Douglas Yeakel, Uttam eBhat, Uttam eBhat, Emma S Elliott Smith, Seth D Newsome   +5 more
doaj   +3 more sources

Trophic Niche Differentiation in Rodents and Marsupials Revealed by Stable Isotopes. [PDF]

PLoS ONE, 2016
Tropical rainforests support the greatest diversity of small mammals in the world, yet we have little understanding about the mechanisms that promote the coexistence of species.
Mauro Galetti, Raisa Reis Rodarte, Carolina Lima Neves, Marcelo Moreira, Raul Costa-Pereira   +4 more
doaj   +6 more sources

Determining trophic niche width: a novel approach using stable isotope analysis [PDF]

Journal of Animal Ecology, 2004
1. Although conceptually robust, it has proven difficult to find practical measures of niche width that are simple to obtain, yet provide an adequate descriptor of the ecological position of the population examined. 2.
Adams, C.E., Bearhop, S., Fuller, R.A., Macleod, H., Waldron, S.   +4 more
core   +5 more sources

Isotopic Niche of Syntopic Granivores in Commercial Orchards and Meadows. [PDF]

Animals (Basel), 2021
In agricultural habitats, diets and trophic positions of syntopic granivorous small mammals are not known sufficiently. Agroecosystems may be quite complex isotopically and the most complex situation concerns the nitrogen-15 isotope as δ15N values are influenced by many internal and external fluxes.
Balčiauskas L, Skipitytė R, Garbaras A, Stirkė V, Balčiauskienė L, Remeikis V.   +5 more
europepmc   +5 more sources

Isotopic niche overlap between sympatric Australian snubfin and humpback dolphins. [PDF]

Ecol Evol, 2022
AbstractEcological niche theory predicts the coexistence of closely related species is promoted by resource partitioning in space and time. Australian snubfin (Orcaella heinsohni) and humpback (Sousa sahulensis) dolphins live in sympatry throughout most of their range in northern Australian waters. We compared stable isotope ratios of carbon (δ13C) and
Parra GJ, Wojtkowiak Z, Peters KJ, Cagnazzi D.   +3 more
europepmc   +5 more sources

Parasite effects on host’s trophic and isotopic niches [PDF]

Trends in Parasitology, 2023
Wild animals are usually infected with parasites that can alter their hosts' trophic niches in food webs as can be seen from stable isotope analyses of infected versus uninfected individuals. The mechanisms influencing these effects of parasites on host isotopic values are not fully understood.
Ana Born-Torrijos, Philip Riekenberg, Marcel T.J. van der Meer, Milen Nachev, Bernd Sures, David W. Thieltges   +5 more
openaire   +3 more sources

Mother-Hatchling Isotopic Relationship in Green Turtle: Isotopic Niche-based Modelling. [PDF]

Zool Stud
The isotopic discrimination between a mother and her hatchlings has been modelled in various vertebrates, including sea turtles. In addition to the linear relation between s13C and s15N isotope values of the mother - hatchling couple, there is missing data on the combined effects of both isotopes, which represent ecological niches of a species.
Özdilek ŞY, Sönmez B, Mestav B.
europepmc   +6 more sources

Multidimensional natal isotopic niches reflect migratory patterns in birds [PDF]

Scientific Reports, 2021
Abstract Naturally occurring stable isotope ratios in animal tissues allow estimation of species trophic position and ecological niche. Measuring multiple isotopes of migratory species along flyway bottlenecks offers the opportunity to sample multiple populations and species whose tissues carry information at ...
Franzoi, A., Larsen, S., Franceschi, P., Hobson, K. A., Pedrini, P., Camin, F., Bontempo, L.   +6 more
openaire   +5 more sources

Too Close for Comfort? Isotopic Niche Segregation in New Zealand's Odontocetes. [PDF]

Biology (Basel), 2022
Species occurring in sympatry and relying on similar and limited resources may partition resource use to avoid overlap and interspecific competition. Aotearoa, New Zealand hosts an extraordinarily rich marine megafauna, including 50% of the world’s cetacean species.
Peters KJ, Bury SJ, Hinton B, Betty EL, Casano-Bally D, Parra GJ, Stockin KA.   +6 more
europepmc   +4 more sources

Isotopic niche plasticity of American alligators within the southern Everglades. [PDF]

PLoS One
Hydrologic alterations within the Everglades have degraded American alligator (Alligator mississippiensis) habitat, reduced prey base, and increased physiological stress. Alligator body condition declined across many management areas from 2000 through 2014, prompting us to investigate the relationship between their intraspecific isotopic niche dynamics
Denton MJ, Cherkiss MS, Mazzotti FJ, Brandt LA, Godfrey ST, Johnson D, Hart KM.   +6 more
europepmc   +4 more sources