Results 61 to 70 of about 3,667,411 (200)

Joint control of precipitation and CO2 on global long-term patterns of plant nitrogen availability

Nature Communications
Plant nitrogen availability critically limits plant growth and thus constrains terrestrial carbon sequestration. Growing evidence points to a recent decline in plant nitrogen availability, yet the global consistency of this trend and its underlying ...
Songbo Tang, Yang Qiao, Jianyang Xia, Erqian Cui   +3 more
doaj   +1 more source

Significant carbon isotopic fractionation during early formation of biological soil crusts with indications for dryland carbon cycling

iScience
Summary: Clarifying the accumulation and decomposition of soil organic carbon (SOC) is crucial for comprehending carbon cycling in terrestrial ecosystems.
Li-Xuan Zhang, Bin Zhou, Bin Song, Cheng Zhao, Jonathan M. Adams, Zhiwei Xu   +5 more
doaj   +1 more source

Carbon stable isotope analysis of cereal remains as a way to reconstruct water availability: preliminary results [PDF]

, 2011
Reconstructing past water availability, both as rainfall and irrigation, is important to answer questions about the way society reacts to climate and its changes and the role of irrigation in the development of social complexity.
Jenkins, Emma L., Jenkins, Emma, Emma Jenkins, Pascal Flohr, Muldner, Gundula, Muldner, G., Flohr, Pascal, Flohr, P., Gundula Müldner   +8 more
core   +1 more source

Stable Isotope Compositions of Wild and Farmed S. Paramoamosion and its Implication for Tracebility

Journal of Isotopes, 2014
To evaluate the possibility of using stable isotopes for discriminating wild and farmed mangrove crabs, Stable carbon and nitrogen isotope ratios of Scylla paramamosion tissues were analyzed. The carbon and nitrogen isotope ratios of wild S. paramamosion
GUO Jie-min1,2;LIN Guang-hui1,3
doaj   +1 more source

A ¹⁵N stable isotope semen label to detect mating in the malaria mosquito Anopheles arabiensis Patton [PDF]

, 2008
In previous studies it was determined that the stable isotope 13-carbon can be used as a semen label to detect mating events in the malaria mosquito Anopheles arabiensis. In this paper we describe the use of an additional stable isotope, 15-nitrogen (15N)
Hood Rebecca C, Knols, B.G.J., Gludovacz Doris, Mayr Leo, Gludovacz, D., Knols Bart GJ, Helinski Michelle EH, Helinski, M., Hood-Nowotny, R.C., Mayr, L.   +9 more
core   +1 more source

Research Progress on Black Carbon Isotope Analytical Pre-treatments

Journal of Isotopes
As a product of incomplete combustion of biomass and fossil fuels，black carbon has an important impact on many fields such as climate change，health，environment and carbon cycle. For a long time，δ13C and Δ14C analysis have been widely used in black carbon
Zhou YI, Xijie YIN, Jiping WANG
doaj   +1 more source

Life history traits of the fish community in Lake Annecy: evidence from the stable isotope composition of otoliths

Knowledge and Management of Aquatic Ecosystems, 2015
Stable isotope analysis (SIA) of fish otoliths shows great potential for exploring the ecology of fish, but this method has not been applied to the study of lacustrine fish communities.
Gerdeaux D., Dufour E.
doaj   +1 more source

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

Factors influencing the stable carbon isotopic composition of suspended and sinking organic matter in the coastal Antarctic sea ice environment [PDF]

, 2011
A high resolution time-series analysis of stable carbon isotopic signatures in particulate organic carbon (δ13CPOC) and associated biogeochemical parameters in sea ice and surface waters provides an insight into the factors affecting δ13CPOC in the ...
Carson, D. S., Ganeshram, R.S., R. S. Ganeshram, S. F. Henley, A. E. Fallick, Fallick, A.E., J. Dougans, A. Clarke, Ganeshram, R. S.; id_orcid, Annett, A.L., Annett, Amber, Weston, K., Henley, S.F., Annett, A. L., Ganeshram, R. S., Carson, D.S., D. S. Carson, K. Weston, Dougans, J., Fallick, A. E., A. L. Annett, Crosta, X., A. Tait, X. Crosta, Henley, S. F., Tait, A., Clarke, A.   +26 more
core   +2 more sources

Seasonally varying contributions to urban CO2 in the Chicago, Illinois, USA region: Insights from a high-resolution CO2 concentration and δ13C record

Elementa: Science of the Anthropocene, 2015
Understanding urban carbon cycling is essential given that cities sustain 54% of the global population and contribute 70% of anthropogenic CO2 emissions. When combined with CO2 concentration measurements ([CO2]), stable carbon isotope analyses (δ13C) can
Joel Moore, Andrew D. Jacobson
doaj   +1 more source