Results 71 to 80 of about 566 (161)

American manatees adjust their diet composition and trophic niche breadth across different coastal regions

Limnology and Oceanography Letters, Volume 11, Issue 3, May 2026.
Abstract Marine mammals can exhibit high plasticity in foraging strategies, but how such plasticity is driven by environmental conditions is poorly understood. The American manatee (Trichechus manatus), a large, endangered herbivore, inhabits marine, estuarine, and freshwater environments.
Camila Carvalho de Carvalho, Emma Deeks, Leandro L. Ciotti, Silvina Botta, Miriam Marmontel, Margareth Copertino, Fábia de Oliveira Luna, Fernanda Niemeyer Löffer Attademo, Vitor Luz Carvalho, João Carlos Gomes Borges, Alexandra Fernandes Costa, Renata Emin‐Lima, Pavel Kratina, Eduardo Resende Secchi   +13 more
wiley   +1 more source

A seasonal precipitation isoscape for New Zealand

Journal of Hydrology: Regional Studies
Region: New Zealand Focus: Application of a seasonal precipitation isoscape for New Zealand, to incorporate influences of regional scale atmospheric circulation, and local topography. New hydrological insights: Our regionally calibrated sinusoidal model demonstrated substantial variation in the strength (amplitude and fit) of seasonal cycles of ...
B.D. Dudley, A.F. Hill, A. McKenzie
openaire   +2 more sources

Springtime Formation of Laminated Soil Carbonate Rinds and Changes in Fluvial Terrace Soils on Orbital Timescales at Rio Mesa, Utah, USA

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 5, May 2026.
Abstract Laminated soil carbonate rinds are a Quaternary paleoclimate archive whose isotope composition is linked to soil formation conditions. At Rio Mesa, Utah (USA), we investigated the fidelity of rind records in a river terrace setting by determining the seasonal timing of rind formation and testing for inter‐record replication.
Tyler E. Huth, Thure E. Cerling, David W. Marchetti, Amy L. Ellwein, Shannon Mahan, David R. Bowling, Benjamin H. Passey, Victor J. Polyak, Yemane Asmerom   +8 more
wiley   +1 more source

Intercolony and Intra‐Annual Variations in Isotopic Niche of Red‐Footed Boobies Sula sula in the Tropical Indian Ocean

Ecological Research, Volume 41, Issue 3, May 2026.
We compared the diet and assessed geographic and seasonal variations in the isotopic niches of red‐footed boobies across three Indian Ocean atolls. Our results demonstrate plasticity in both diet and trophic niche, likely driven by local environmental conditions, breeding stages, and colony‐specific factors.
Jennifer Appoo, Nancy Bunbury, Jake Letori, Aurelie Hector, Christopher W. Jones, Nicholas A. J. Graham, Sébastien Jaquemet   +6 more
wiley   +1 more source

A new high-resolution groundwater isoscape for south-east Germany: insights from differences in relation to precipitation [PDF]

Hydrology and Earth System Sciences
Stable water isotopes are important tracers in understanding interactions between all compartments of the hydrological cycle. Particularly in groundwater studies, isotopes have been used to assess the recharge and origin of groundwater.
A. Gaillard, R. van Geldern, J. A. C. Barth, C. Stumpp   +3 more
doaj   +1 more source

Geographic distribution of feather δ34S in Europe

Ecosphere
Geographic distribution models of environmentally stable isotopes (the so‐called “isoscapes”) are widely employed in animal ecology, and wildlife forensics and conservation.
Vojtěch Brlík, Petr Procházka, Luana Bontempo, Federica Camin, Frédéric Jiguet, Gergely Osváth, Craig A. Stricker, Michael B. Wunder, Rebecca L. Powell   +8 more
doaj   +1 more source

Modern plants and sulfur isoscapes — A review, discussion, and construction of a pilot δ ³⁴ S isoscape for mobility and provenance studies

Rapid Communications in Mass Spectrometry
RATIONALE Sulfur isotopes are increasingly used as mobility indicators in humans and animals in biology, archaeology, and forensics. However, there has been a lack of modern sulfur isotope baseline “isoscape” studies using modern plants and animals, largely due to the possibility of contamination of the S ...
Damon Tarrant, Michael P. Richards
openaire   +2 more sources

Stable Isotope Analysis Reveals Common Teal (Anas crecca) Molting Sites in Western Siberia: Implications for Avian Influenza Virus Spread

Microorganisms
The wetlands of southwestern Siberia (SWS) are a crossroads of bird migration routes, bringing avian influenza (AIV) strains that were previously isolated in different regions of the continent to Siberia.
Alexey V. Druzyaka, Olga R. Druzyaka, Kirill A. Sharshov, Nikita Kasianov, Nikita Dubovitskiy, Anastasiya A. Derko, Ivan G. Frolov, Jyrki Torniainen, Wen Wang, Mariya A. Minina, Alexander M. Shestopalov   +10 more
doaj   +1 more source

Climate Gradients Underlie Geographical Variations in iWUE and δ15N Values of Encelia

Plant-Environment Interactions
This study assessed variations in leaf intrinsic water use efficiency (iWUE) and δ15N values among Encelia, a genus of drought‐deciduous shrubs distributed across arid regions of southwestern North America between 1972 and 1980 when climates were cooler ...
Tegan E. Lengyel, Iman Karavan‐Jahromi, Avery W. Driscoll, James R. Ehleringer   +3 more
doaj   +1 more source

A δ2H Isoscape of blackberry as an example application for determining the geographic origins of plant materials in New Zealand.

PLoS ONE, 2019
In this investigation, two previously reported precipitation δ2H isoscapes for New Zealand were used to develop a δ2H isoscape for blackberry (Rubus sp.) leaf. These isoscapes were calibrated using the measured δ2H values of 120 authentic blackberry leaf
Kiri McComb, Shaerii Sarker, Jurian Hoogewerff, Alan Hayman, Russell Frew   +4 more
doaj   +1 more source