Results 41 to 50 of about 18,269 (245)

Using stable isotopes of nitrogen and carbon to study seabird ecology: applications in the Mediterranean seabird community

Scientia Marina, 2003
The application of the stable isotope technique to ecological studies is becoming increasingly widespread. In the case of seabirds, stable isotopes of nitrogen and carbon have been mainly used as dietary tracers. This approach relieson the fact that food
Manuela G. Forero, Keith A. Hobson
doaj   +1 more source

Diet–animal fractionation of nitrogen stable isotopes reflects the efficiency of nitrogen assimilation in ruminants [PDF]

British Journal of Nutrition, 2015
The natural abundance of15N in animal proteins (δ15Nanimal) is greater than that in the diet consumed by the animals (δ15Ndiet), with a discrimination factor (Δ15N = δ15Nanimal− δ15Ndiet) that is known to vary according to nutritional conditions.
Cantalapiedra-Hijar, Gonzalo, Ortigues Marty, Isabelle, Sepchat, Bernard, Agabriel, Jacques, Huneau, Jean-François, Fouillet, Hélène   +5 more
openaire   +3 more sources

Self‐Assembled Monolayers in p–i–n Perovskite Solar Cells: Molecular Design, Interfacial Engineering, and Machine Learning–Accelerated Material Discovery

Advanced Materials, EarlyView.
This review highlights the role of self‐assembled monolayers (SAMs) in perovskite solar cells, covering molecular engineering, multifunctional interface regulation, machine learning (ML) accelerated discovery, advanced device architectures, and pathways toward scalable fabrication and commercialization for high‐efficiency and stable single‐junction and
Asmat Ullah, Ying Luo, Stefaan De Wolf
wiley   +1 more source

Different Responses in Root Water Uptake of Summer Maize to Planting Density and Nitrogen Fertilization

Frontiers in Plant Science, 2022
Modifying farming practices combined with breeding has the potential to improve water and nutrient use efficiency by regulating root growth, but achieving this goal requires phenotyping the roots, including their architecture and ability to take up water
Yang Gao, Jinsai Chen, Guangshuai Wang, Zhandong Liu, Weihao Sun, Yingying Zhang, Xiaoxian Zhang   +6 more
doaj   +1 more source

Decoupling Activation and Preservation: Architectural Design Principles of Organic Frameworks for Selective Photocatalytic Methane Oxidation

Advanced Materials, EarlyView.
Selective methane (CH4) photooxidation emerges from architectural decoupling of activation and preservation. Programmable organic semiconductor frameworks spatially organize oxidative flux and intermediate residence, separating reaction zones from product domains to synchronize activation strength with stabilization and establish a selective oxidation ...
Minxian Zhang, Jie He, Jinqiang Zhang, Hongqi Sun, Shaobin Wang, Xiaoguang Duan   +5 more
wiley   +1 more source

Isotopic discrimination factors and nitrogen turnover rates in reared Atlantic bluefin tuna larvae (Thunnus thynnus): effects of maternal transmission

Scientia Marina, 2016
The use of stable isotope analysis to study animal diets requires estimates of isotopic turnover rates (half time, t50) and discrimination factors (Δ) for an accurate interpretation of trophic patterns.
Amaya Uriarte, Alberto García, Aurelio Ortega, Fernando de la Gándara, José Quintanilla, Raúl Laiz-Carrión   +5 more
doaj   +1 more source

Polyphenol‐Inspired Materials for Agricultural Applications

Advanced Materials, EarlyView.
This review outlines the use of polyphenol‐inspired materials for sustainable agriculture, highlighting their molecular design, interfacial assembly, structure–property relationships, and prospects toward precision agriculture, climate resilience, ecosystem protection, and circular bioeconomy strategies.
Haofu Liu, Omid Mazaheri, Zhixing Lin, Tianzheng Wang, Jingqu Chen, Yuang Gu, Xia Liang, Deli Chen, Frank Caruso   +8 more
wiley   +1 more source

Stable Isotopes Reveal the Drivers of Post‐Wildfire Natural Regeneration of Interior Douglas‐Fir Seedlings in British Columbia

Ecology and Evolution
Wildfires are increasing in frequency and severity due to climate change, posing challenges to forest ecosystems, including the southern interior of British Columbia, Canada. Interior Douglas‐fir (Pseudotsuga menziesii var.
Julie McAulay, José Ignacio Querejeta, Gabriel Danyagri, Bianca N. I. Eskelson, Timothy J. Philpott, Sari C. Saunders, Eliot Mompeán, Ignacio Barbeito   +7 more
doaj   +1 more source

Uptake Patterns of Glycine, Ammonium, and Nitrate Differ Among Four Common Tree Species of Northeast China

Frontiers in Plant Science, 2019
Fundamental questions of how plant species within secondary forests and plantations in northeast China partition limited nitrogen (N) resource remain unclear.
Feifei Zhu, Feifei Zhu, Luming Dai, Luming Dai, Erik A. Hobbie, Keisuke Koba, Xueyan Liu, Geshere A. Gurmesa, Shaonan Huang, Shaonan Huang, Shanlong Li, Shanlong Li, Yinghua Li, Shijie Han, Yunting Fang, Yunting Fang   +15 more
doaj   +1 more source

Comparison Between Trophic Positions in the Barents Sea Estimated From Stable Isotope Data and a Mass Balance Model

Frontiers in Marine Science, 2022
The trophic position concept is central in system ecology, and in this study, trophic position (TP) estimates from stable-isotopes and an Ecopath mass-balance food web model for the Barents Sea were compared. Two alternative models for estimating TP from
Torstein Pedersen
doaj   +1 more source