Results 61 to 70 of about 566 (161)

Stable Isotopes in Eye Lenses Record Patterns and Variation in Resource‐Use Ontogeny of Three New Zealand Kelp Forest Fishes

Ecology and Evolution, Volume 16, Issue 7, July 2026.
Here, we describe the results of stable isotope analysis using sequentially deposited layers from fish eye lenses to model lifetime trophic shifts of three New Zealand kelp forest species: Notolabrus fucicola, Odax pullus, and Parapercis colias. Using eye lenses, we identified size‐structured trends and patterns of variability in estimates of basal ...
Joseph S. Curtis, Gretchen J. McCarthy, Leonardo M. Durante, Thomas M. Chapple, Sophie F. Whittall, Peter W. Dillingham, Stephen R. Wing   +6 more
wiley   +1 more source

Combining δ2H and δ34S stable isotopes identifies diverse moult strategies in a short‐distance migratory bird

Ibis, Volume 168, Issue 3, Page 1002-1015, July 2026.
Moult strategies in birds can vary considerably even within a single species, particularly in terms of where moulting takes place. Yet, the factors underlying this variation and its consistency across years and individuals remain poorly understood. One such strategy, moult migration, involves individuals moving to a specific moulting location amid ...
Elza Marija Zacmane, Ivo Dinsbergs, Steffen Hahn, Māris Jaunzemis, Valts Jaunzemis, Oskars Keišs, Ance Priedniece, Viesturs Vīgants, Martins Briedis   +8 more
wiley   +1 more source

Stable Isotope Analysis (δ13C and δ15N) of Baleen Plates Reveals Feeding Patterns in Stranded Humpback Whales (Megaptera novaeangliae) Along the Brazilian Coast

Marine Mammal Science, Volume 42, Issue 3, July 2026.
ABSTRACT Humpback whales (Megaptera novaeangliae) from breeding stock A migrate annually between Antarctic feeding grounds (~65° S) and Brazilian breeding areas (~17° S). Traditionally considered to fast during migration, recent feeding observations and increased strandings along southeastern Brazil (~23° S) raise questions about possible shifts in ...
Daniel Fonseca Zappa, Kalil Salloum, Nandhara Alexandrini Martins, Carla Bantel, Andrea Maranho, Carla Beatriz Barbosa, Francisco William da Cruz Júnior, Adriana Barioni, Gislene Torrente‐Vilara   +8 more
wiley   +1 more source

A bioavailable strontium isoscape for Western Europe: A machine learning approach

PLOS ONE, 2018
Strontium isotope ratios (87Sr/86Sr) are gaining considerable interest as a geolocation tool and are now widely applied in archaeology, ecology, and forensic research. However, their application for provenance requires the development of baseline models predicting surficial 87Sr/86Sr variations ("isoscapes").
Bataille, C.P., Holstein, I.C.C. von der, Laffoon, J.E., Willmes, M., Liu, X.-M., Davies, G.R.   +5 more
openaire   +8 more sources

Stable Isotope Analyses of Multiple Tissues of Great Shearwaters (Ardenna Gravis) Reveals Long-Term Dietary Stability, Short-Term Changes in Diet, and Can be Used as a Tool to Monitor Food Webs

Diversity, 2019
The great shearwater (Ardenna gravis) is a common pelagic bird with a distribution that spans almost the entire Atlantic basin, which in conjunction with its relatively high abundance, makes great shearwaters an effective bio indicator. We compared δ
Peter Hong, David N. Wiley, Kevin D. Powers, Robert H. Michener, Les Kaufman, Kent A. Hatch   +5 more
doaj   +1 more source

Subsoil Carbon and δ13C Spatial Patterns Reveal Land Use Legacy in a Sandy Subtropical Ecotone in Brazil

Journal of Geophysical Research: Biogeosciences, Volume 131, Issue 6, June 2026.
Abstract Soil organic carbon (SOC) storage represents one of the most critical ecosystem services provided by soils, yet scientific assessments frequently focus on surface layers, overlooking deeper horizons. In this study, we investigated SOC stocks and spatial patterns of soil δ13C across three contrasting land use and land cover (LULC) types in ...
Lucas F. Alexandre, Rodnei Rizzo, Jonas Steinfeld, Andres M. R. Gomez, Victor N. Libório, Plínio B. Camargo, Siu M. Tsai, Maria V. R. Ballester   +7 more
wiley   +1 more source

Inter‐Species Dietary Separation in Two Congeneric Parrot Species Highlighted With Stable Light Isotopes

African Journal of Ecology, Volume 64, Issue 4, June 2026.
ABSTRACT The Cape Parrot Poicephalus robustus and the Grey‐headed Parrot P. fuscicollis suahelicus have recently been recognized as separate species, each with unique habitat requirements; the former a forest species endemic to South Africa, and the latter a woodland and savannah species with a wider distribution in Africa.
Craig T. Symes, Caroline G. Howes, Mike Butler, Willem G. Coetzer, Sandi Willows‐Munro   +4 more
wiley   +1 more source

Modelling isoscapes using mixed models [PDF]

, 2017
Isoscapes are maps depicting the continuous spatial (and sometimes temporal) variation in isotope composition. They have various applications ranging from the study of isotope circulation in the main earth systems to the determination of the provenance of migratory animals.
Courtiol, Alexandre, Rousset, Francois
openaire   +1 more source

Integrating geostatistical methods and deep learning for enhanced 87Sr/86Sr isoscape Estimation: A case study in South Korea

International Journal of Applied Earth Observations and Geoinformation
The 87Sr/86Sr isotopic ratio has emerged as a valuable geochemical tracer in fields such as environmental forensics, archaeology, and provenance research.
Hyeongmok Lee, Go-Eun Kim, Woo-Jin Shin, Yuyoung Lee, Sanghee Park, Kwang-Sik Lee, Jina Jeong, Seung-Ik Park, Sungwook Choung   +8 more
doaj   +1 more source

Genetic and Ecological Divergence Between Northwest Atlantic Killer Whale Populations

Ecology and Evolution, Volume 16, Issue 5, May 2026.
Killer whale (Orcinus orca) populations exhibit substantial genetic, ecological, and morphological differences across their global distribution. In this study, we use whole‐genome resequencing and compound‐specific stable isotope analysis of amino acids to show concurrent genetic and ecological differentiation in two relatively understudied killer ...
Caila E. Kucheravy, Evelien de Greef, Steven H. Ferguson, Cortney A. Watt, Jack W. Lawson, Jeremy J. Kiszka, Colin J. Garroway, Cory J. D. Matthews   +7 more
wiley   +1 more source