Results 81 to 90 of about 248,597 (344)

Do oxygen isotope values in collagen reflect the ecology and physiology of neotropical mammals?

Frontiers in Ecology and Evolution, 2015
Stable isotope data provide insight into the foraging ecology of animals. Traditionally, carbon and nitrogen isotope values have been used to infer dietary and habitat preferences.
Brooke eCrowley, Amanda Dawn Melin, Amanda Dawn Melin, Justin Douglas Yeakel, Justin Douglas Yeakel, Nathaniel Jay Dominy   +5 more
doaj   +1 more source

Trophic interactions of meso- and macrozooplankton and fish in the Iceland Sea as evaluated by fatty acid and stable isotope analysis [PDF]

, 2012
A trophic study was carried out in August of 2007 and 2008 on the pelagic ecosystem in the Subarctic Iceland Sea. Carbon and nitrogen stable isotopes and fatty acid biomarkers were used to study trophic linkages and the trophic ecology of the most ...
Falk Petersen, Stig, Gislason, Astthor, Petursdottir, Hildur   +2 more
core   +1 more source

Harmonizing the Pyrene and Ether Groups in Covalent Triazine Polymers for Highly Effective H2O2 Photosynthesis via One‐Step Two‐Electron Oxygen Reduction

Advanced Functional Materials, EarlyView.
The pyrene and ether groups are incorporated into the covalent triazine polymer (CTP) structure. The synergistic effect of the two functional groups endows CTP with better electron transfer, light absorption, and oxygen activation properties. An impressive apparent quantum yield (13.2% @420 nm) and a remarkable solar‐to‐chemical conversion efficiency ...
Chong Wang, Jinliang Lv, Yichun Lu, Hanfeng Ye, Xuan Zhang, Leonardo Cancellara, Nadezda Tarakina, Jiande Lin, Xin Gao, Oleksandr Savateev, Jiajia Cheng   +10 more
wiley   +1 more source

Morphological and dietary responses of chipmunks to a century of climate change. [PDF]

, 2016
Predicting how individual taxa will respond to climatic change is challenging, in part because the impacts of environmental conditions can vary markedly, even among closely related species.
Adams, Allen, Ben-David, Ben-David, Besnard, Best, Bookstein, Botti, Brown, Burnett, Burnham, Caumul, Chen, Cheverud, Clawson, Clawson, Craig, Craine, Crimmins, Dawson, Dawson, Eastman, Edwards, Elbroch, Falconer, Fry, Goodall, Grieco, Grinnell, Hammond, Hanken, Hendry, Hijmans, Holm, Ingles, Keeling, Kelly, Klingenberg, Koch, Kopp, Lande, Lande, Lenoir, Lessels, Lynch, Marroig, Marshall, McIntyre, Millien, Monteiro, Moritz, Mousseau, O'Connell, Ozgul, Parmesan, Parmesan, Patton, Pergams, Pergams, Post, Rohlf, Root, Roux, Rowe, Rubidge, Rubidge, Sage, Schmidt-Nielsen, Smith, Staudinger, Thorne, Tingley, Wigginton, Yom-Tov, Zelditch, Zuur   +75 more
core   +1 more source

Nitrogen stable isotope analysis of sulfonamides by derivatization-gas chromatography-isotope ratio mass spectrometry [PDF]

Analytical and Bioanalytical Chemistry
AbstractThe continuous introduction of micropollutants into the environment through livestock farming, agricultural practices, and wastewater treatment is a major concern. Among these pollutants are synthetic sulfonamide antibiotics such as sulfamethoxazole, which are not always fully degraded and pose a risk of fostering antimicrobial resistance.
Qingyuan Dou, Aoife Canavan, Yuhao Fu, Leilei Xiang, Yu Wang, Xi Wang, Xin Jiang, Christopher Dirr, Fang Wang, Martin Elsner   +9 more
openaire   +2 more sources

Two‐Dimensional Materials as a Multiproperty Sensing Platform

Advanced Functional Materials, EarlyView.
Various sensing modalities enabled and/or enhanced by two‐dimensional (2D) materials are reviewed. The domains considered for sensing include: 1) optoelectronics, 2) quantum defects, 3) scanning probe microscopy, 4) nanomechanics, and 5) bio‐ and chemosensing.
Dipankar Jana, Shubhrasish Mukherjee, Dmitrii Litvinov, Magdalena Grzeszczyk, Sergey Grebenchuk, Makars Šiškins, Virgil Gavriliuc, Yihang Ouyang, Changyi Chen, Yuxuan Ye, Meng Yiming, Maciej Koperski   +11 more
wiley   +1 more source

Nitrogen dynamics and nitrate stable isotopes indicate nitrogen loss in the Bay of Bengal [PDF]

Biogeosciences
Oxygen-minimum zones (OMZs) play an important role in the global oceanic nitrogen cycle because they account for 20 % to 40 % of the global loss of bioavailable nitrogen despite covering only about 1 % of the global ocean volume.
G. Schulz, G. Schulz, K. Dähnke, T. Sanders, J. Penopp, H. W. Bange, R. Czeschel, B. Gaye   +7 more
doaj   +1 more source

A forensic approach to understanding habitat use from stable isotope analysis of (avian) claw material [PDF]

, 2003
1. The potential of using stable isotope signatures of avian claws in order to infer diet and habitat use was investigated. 2. Highly significant relationships observed between stable carbon and nitrogen isotope ratios (13C, 15N) in the claws and ...
Bearhop, S, Furness, RW, Hilton, GM, Votier, SC, Waldron, S   +4 more
core   +1 more source

Quantifying Spin Defect Density in hBN via Raman and Photoluminescence Analysis

Advanced Functional Materials, EarlyView.
An all‐optical method is presented for quantifying the density of boron vacancy spin defects in hexagonal boron nitride (hBN). By correlating Raman and photoluminescence signals with irradiation fluence, defect‐induced Raman modes are identified and established an relationship linking optical signatures to absolute defect densities. This enables direct
Atanu Patra, Paul Konrad, Andreas Sperlich, Timur Biktagirov, Wolf Gero Schmidt, Lesley Spencer, Igor Aharonovich, Sven Höfling, Vladimir Dyakonov   +8 more
wiley   +1 more source

Adaptation of resource acquisition and investment in resource acquiring tissues of Betula nana in response to climatic constraints

Global Ecology and Conservation
Several plant species have moved further north in their range in response to climatic shifts. This study aimed to investigate how leaf and root functional traits of B.
Joanna Mucha, Marcin Zadworny, Łukasz Walas, Ewa Mąderek, Anna Durska, Paulina Kościelniak-Wawro, Jacek Oleksyn, Andrzej M. Jagodziński, Louise H. Comas   +8 more
doaj   +1 more source