Meta‐analysis and critical review of trophic discrimination factors (Δ13C and Δ15N): Importance of tissue, trophic level and diet source

RB Stephens, ON Shipley, RJ Moll - Functional Ecology, 2023‏ - Wiley Online Library
Robustly quantifying dietary resource use and trophic position using stable isotopes
requires accurate trophic discrimination factors (TDF; Δ13C and Δ15N for carbon and …

Current methods and future directions in avian diet analysis

BD Hoenig, AM Snider, AM Forsman, KA Hobson… - The Auk, 2022‏ - academic.oup.com
Identifying the composition of avian diets is a critical step in characterizing the roles of birds
within ecosystems. However, because birds are a diverse taxonomic group with equally …

Reevaluating trophic discrimination factors (Δδ13C and Δδ15N) for diet reconstruction

RB Stephens, AP Ouimette, EA Hobbie… - Ecological …, 2022‏ - Wiley Online Library
Stable isotope analysis is increasingly being used to assess diet and trophic positions of
animals. Such assessments require estimates of trophic discrimination factors (TDFs)—offset …

Gaining insight into the assimilated diet of small bear populations by stable isotope analysis

G Careddu, P Ciucci, S Mondovì, E Calizza, L Rossi… - Scientific Reports, 2021‏ - nature.com
Apennine brown bears (Ursus arctos marsicanus) survive in an isolated and critically
endangered population, and their food habits have been studied using traditional scat …

The effect of a harmful algal bloom (Karenia selliformis) on the benthic invertebrate community and the sea otter (Enhydra lutris) diet in eastern Hokkaido

J Johnstone, I Suzuki, RW Davis, N Konno… - PloS one, 2024‏ - journals.plos.org
In recent decades, the locally extinct sea otter (Enhydra lutris lutris) has been recolonizing
the coast of eastern Hokkaido. Their diet includes benthic invertebrates such as bivalves …

Testing for effects of growth rate on isotope trophic discrimination factors and evaluating the performance of Bayesian stable isotope mixing models experimentally: A …

KEB Gurney, HL Classen, RG Clark - Plos one, 2024‏ - journals.plos.org
Discerning assimilated diets of wild animals using stable isotopes is well established where
potential dietary items in food webs are isotopically distinct. With the advent of mixing …

Red-necked Falcons Falco chicquera track changing environments by shifting their trophic niche during the rainy monsoon season

M Foysal, CT Panter - Bird Study, 2024‏ - Taylor & Francis
ABSTRACT Capsule: Red-necked Falcons Falco chicquera shift their trophic niche, from
eating birds to bats, during the rainy monsoon season. Aims: To explore seasonal changes …

7 Stable isotope analysis

K Abrantes, M Sheaves - Quantifying Diets of Wildlife and Fish …, 2024‏ - books.google.com
Stable isotope analysis is a valuable tool in food web studies. This increasingly available
technique is useful because the stable isotope composition of a consumer reflects that of its …

Isotopic niche partitioning and individual specialization in an Arctic raptor guild

DL Johnson, MT Henderson, DL Anderson, TL Booms… - Oecologia, 2022‏ - Springer
Intra-and inter-specific resource partitioning within predator communities is a fundamental
component of trophic ecology, and one proposed mechanism for how populations partition …

Sexual segregation in the foraging distribution, behaviour, and trophic niche of the endemic Boyd's shearwater (Puffinus lherminieri boydi)

I dos Santos, JA Ramos, FR Ceia, I Rodrigues… - Marine Biology, 2022‏ - Springer
Studies on sex-specific segregation in foraging behaviour and trophic niche have been
focussed on large and dimorphic seabirds, with less information on small monomorphic …