Results 21 to 30 of about 2,238,091 (243)
Frontiers in Environmental Science, 2022 Lakes are currently responsible for a significant amount of total natural methane emission. Microbial oxidation of methane plays a central role in Arctic carbon cycling, potentially reducing methane emissions from lakes, though little is known about ...
Sarah B. Cadieux +6 more
doaj +1 more source
Ecosphere, 2021 Tracing the flow of dietary energy sources, especially in systems with a high degree of omnivory, is an ongoing challenge in ecology. In aquatic systems, one of the persistent challenges is in differentiating between autochthonous and allochthonous ...
Ariana M. Chiapella +2 more
doaj +1 more source
Seasonally resolved growth of freshwater bivalves determined by oxygen and carbon isotope shell chemistry [PDF]
, 2010 By means of a monitoring experiment in two rivers in the Netherlands, we establish a relationship between seasonally resolved growth rates in unionid freshwater bivalves and their environment.
Dick Kroon +18 more
core +1 more source
Using 13C-, 15N-, and 18O stable isotope analysis of human bone tissue to identify transhumance, high altitude habitation and reconstruct palaeodiet for the early medieval Alpine population at Volders, Austria [PDF]
, 2007 The analysis of stable isotopes of oxygen from structural carbonate in archaeological human bone samples originating from an early medieval cemetery in the Alpine community of Volders, Austria were used to determine the utilization of higher altitudes ...
McGlynn, George
core +1 more source
Shuitu baochi yanjiu, 2021 Utilizing stable carbon isotopes to trace the nutrient circulation and energy flow in ecosystem, trace the dynamics of carbon transfer in ecosystem quantitatively, and clarify the ecosystem carbon cycle and its driving mechanism has become an important ...
ZHANG Hao, LI Jianping
doaj
Petroleum Research, 2017 Carbon and oxygen isotopes of marine carbonate rocks or fossil shells could indicate global sea-level relative change. Generally, heavier carbon isotopes or lighter oxygen isotopes reflected rise of global sea-level relative changes, and vice versa.
Zongju Zhao, Jianguo Wang, Peixi Wang
doaj +1 more source
Conduits of contamination to contemporary food webs of the Norfolk Broads [PDF]
, 2011 PhDDuring the 1960s-1980s antifouling applications containing the organotin tributyltin (TBT) were applied to craft on the Norfolk Broads, leaving a legacy of contaminants in sediments.
Laws, Jacob
core +2 more sources
Tracing the Deep Carbon Cycle Using Metal Stable Isotopes: Opportunities and Challenges
Engineering, 2019 The subduction of marine carbonates and carbonated oceanic crust to the Earth’s interior and the return of recycled carbon to the surface via volcanism may play a pivotal role in governing Earth’s atmosphere, climate, and biosphere over geologic time ...
Sheng-Ao Liu, Shu-Guang Li
doaj +1 more source
ResearchThe protonation process of adsorbed *CO intermediates has been widely recognized as a critical determinant governing product selectivity in electrocatalytic carbon dioxide reduction reaction (eCO2RR). However, the active hydrogen species and mechanism of
Yuting Zhu +13 more
doaj +1 more source
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 +5 more
doaj +1 more source