Results 1 to 10 of about 3,681,214 (292)

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

open access: yesGlobal 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   +8 more
doaj   +1 more source

Using Stable Carbon and Nitrogen Isotopes to Evaluate Parrotfish Diet

open access: yesAnnals of Tropical Research, 2013
With limited inconclusive data provided by gut content analysis, stable isotope analysis has recently emerged to validate trophic position and dietary intake. In this study, a dual isotope approach was used to reveal parrotfish feeding.
Maria Elisa B. Gerona   +1 more
doaj   +1 more source

Cultural diversity shaped neolithic subsistence in the Carpathian Basin

open access: yesScientific Reports
Stable carbon and nitrogen isotope analysis from archaeological human and animal bone collagen is a powerful tool to enlighten past socio-agricultural systems and their close links to environmental conditions.
M. L. C. Depaermentier   +3 more
doaj   +1 more source

Identification of secondary microbial methane and biodegradation: Case study from Luliang oil and gas field, Junggar Basin, China

open access: yesJournal of Natural Gas Geoscience, 2019
The “secondary microbial gas” is defined as natural gas generated via the biodegradation of oil reservoirs. Since methane dominates, it is also called “secondary microbial methane”.
Deyu Gong   +5 more
doaj   +1 more source

Stable Isotopes in Greenhouse Gases from Soil: A Review of Theory and Application

open access: yesAtmosphere, 2019
Greenhouse gases emitted from soil play a crucial role in the atmospheric environment and global climate change. The theory and technique of detecting stable isotopes in the atmosphere has been widely used to an investigate greenhouse gases from soil. In
Xiao-cong Zhu   +3 more
doaj   +1 more source

Mass-spectrometric study on 13C/12C carbon and 18O/16O oxygen stable isotopes distributions in grapes and wines from the Black Sea regions

open access: yesBIO Web of Conferences, 2019
The present study continues the 2015–2016 research project on biological characteristics of stable isotopes fractionation in grapes taking into account the agro-climatic growth conditions of this representative of the C3-pathway of photosynthesis group ...
Kolesnov A.   +11 more
doaj   +1 more source

Refining methods to add stable isotope analysis of migratory bird fat to the ornithological toolbox

open access: yesJournal of Field Ornithology
Prior to migration, songbirds increase food consumption to deposit subcutaneous fat that helps fuel migratory flights, and many periodically pause at stopover sites to rest and refuel for the next flight.
Andrea M Lindsay   +3 more
doaj   +1 more source

Source Analysis of Benzene Homologues Based on Stable Carbon Isotopes

open access: yesZhipu Xuebao
Benzene homologues, including compounds such as benzene, toluene, and xylene, have become key pollutants of concern in food, drug, and environmental safety cases due to their significant carcinogenicity and ecotoxicity.
Han-yang ZHENG   +10 more
doaj   +1 more source

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