Results 31 to 40 of about 323,005 (266)

Stable isotopes are quantitative indicators of trophic niche [PDF]

open access: yesEcology Letters, 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.
Harry H. Marshall   +5 more
openaire   +4 more sources

Comparing isotopic niche widths among and within communities: SIBER - Stable Isotope Bayesian Ellipses in R [PDF]

open access: yesJournal of Animal Ecology, 2011
(Uploaded by Plazi for the Bat Literature Project) No abstract provided.
Jackson, Andrew L.   +3 more
openaire   +5 more sources

Trait based niche differentiation in tetrakas (Bernieridae) endemic to Madagascar: A multi-isotope approach

open access: yesFrontiers in Ecology and Evolution, 2023
IntroductionTropical rainforest species interact with each other and their environment over a wide range of spatiotemporal scales. However, our understanding of resource partitioning and the mechanisms of avian species coexistence is largely restricted ...
Elizabeth Yohannes   +3 more
doaj   +1 more source

Estimating niche width using stable isotopes in the face of habitat variability: a modelling case study in the marine environment. [PDF]

open access: yesPLoS ONE, 2012
Distributions of stable isotopes have been used to infer an organism's trophic niche width, the 'isotopic niche', and examine resource partitioning. Spatial variation in the isotopic composition of prey may however confound the interpretation of isotopic
David O Cummings   +4 more
doaj   +1 more source

Nile Tilapia (Oreochromis niloticus Linnaeus, 1758) Invasion Caused Trophic Structure Disruptions of Fish Communities in the South China River—Pearl River

open access: yesBiology, 2022
Widespread introductions of non-native species, including aquaculture and ornamental species, threaten biodiversity and ecosystem functioning by modifying the trophic structure of communities.
Fangmin Shuai, Jie Li
doaj   +1 more source

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

open access: yes, 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.
Bearhop, S.   +8 more
core   +1 more source

An assessment of the trophic structure of the Bay of Biscay continental shelf food web: Comparing estimates derived from an ecosystem model and isotopic data [PDF]

open access: yes, 2013
Comparing outputs of ecosystem models with estimates derived from experimental and observational approaches is important in creating valuable feedback for model construction, analyses and validation.
Lassalle, Géraldine   +3 more
core   +1 more source

The marine side of a terrestrial carnivore: intra-population variation in use of allochthonous resources by arctic foxes. [PDF]

open access: yesPLoS ONE, 2012
Inter-individual variation in diet within generalist animal populations is thought to be a widespread phenomenon but its potential causes are poorly known. Inter-individual variation can be amplified by the availability and use of allochthonous resources,
Arnaud Tarroux   +3 more
doaj   +1 more source

Dietary and isotopic specialization: the isotopic niche of three Cinclodes ovenbirds

open access: yesOecologia, 2009
By comparing the isotopic composition of tissues deposited at different times, we can identify individuals that shift diets over time and individuals with constant diets. We define an individual as an isotopic specialist if tissues deposited at different times have similar isotopic composition. If tissues deposited at different times differ in isotopic
Martínez del Río, Carlos   +3 more
openaire   +5 more sources

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