Results 191 to 200 of about 40,295 (219)

Seasonal enhancement of the viral shunt catalyzes a subsurface oxygen maximum in the Sargasso Sea. [PDF]

Nat Commun
Gilbert NE, Muratore D, Gochev CS, LeCleir GR, Cagle SM, Pound HL, Sun CL, Carrillo A, Ndlovu KS, Maidanik I, Coenen AR, Chittick L, DeBruyn JM, Buchan A, Lindell D, Sullivan MB, Weitz JS, Wilhelm SW.   +17 more
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NO2, CH4 and CO2 fluxes from agricultural organic and mineral soils grown with Phleum pratense and mixed Trifolium pratense/P. pratense under elevated CO2 concentration [PDF]

Kettunen, Riitta
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Effects of drought and rainfall events on soil autotrophic respiration and heterotrophic respiration

Agriculture, Ecosystems & Environment, 2021
Abstract The changes of surface vegetation cover, caused by the return of farmland to forest and grassland, can not only effectively control soil erosion, but also significantly increase soil organic carbon reserves. However, few studies are currently available on the control mechanism of soil CO2 emission after artificial vegetation restoration ...
Pengfei Zheng, Dandan Wang, Xinxiao Yu, Guodong Jia, Ziqiang Liu, Yusong Wang, Yonge Zhang   +6 more
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Respiration rates in heterotrophic, free-living protozoa

Microbial Ecology, 1983
Published estimates of protozoan respiratory rates are reviewed with the object of clarifying their value in ecological studies. The data show a surprisingly large variance when similarly sized cells or individual species are compared. This is attributed to the range of physiological states in the cells concerned.
T, Fenchel, B J, Finlay
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Globally rising soil heterotrophic respiration over recent decades

Nature, 2018
Global soils store at least twice as much carbon as Earth's atmosphere1,2. The global soil-to-atmosphere (or total soil respiration, RS) carbon dioxide (CO2) flux is increasing3,4, but the degree to which climate change will stimulate carbon losses from soils as a result of heterotrophic respiration (RH) remains highly uncertain5-8.
Ben, Bond-Lamberty, Vanessa L, Bailey, Min, Chen, Christopher M, Gough, Rodrigo, Vargas   +4 more
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Soil respiration under climate warming: differential response of heterotrophic and autotrophic respiration

Global Change Biology, 2014
AbstractDespite decades of research, how climate warming alters the global flux of soil respiration is still poorly characterized. Here, we use meta‐analysis to synthesize 202 soil respiration datasets from 50 ecosystem warming experiments across multiple terrestrial ecosystems.
Wang, Xin, Liu, Lingli, Piao, Shilong, Janssens, Ivan, Tang, Jianwu, Liu, Weixing, Chi, Yonggang, Wang, Jing, Xu, Shan   +8 more
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Drought alters respired δ13CO2 from autotrophic, but not heterotrophic soil respiration

Soil Biology and Biochemistry, 2012
Many researchers are interested in the variability of root-respired δ 13 CO 2 as an indication of linkages between belowground plant respiration and canopy processes. Most studies in this area have, however, relied upon the assumption that temporal variability of total soil respired δ 13 CO 2 reflects autotrophic soil processes, but in fact few ...
D. Risk, N. Nickerson, C.L. Phillips, L. Kellman, M. Moroni   +4 more
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Divergent Trajectory of Soil Autotrophic and Heterotrophic Respiration upon Permafrost Thaw

Environmental Science & Technology, 2022
Warming-induced permafrost thaw may stimulate soil respiration (Rs) and thus cause a positive feedback to climate warming. However, due to the limited in situ observations, it remains unclear about how Rs and its autotrophic (Ra) and heterotrophic (Rh) components change upon permafrost thaw. Here we monitored variations in Rs and its components along a
Guanqin Wang, Leiyi Chen, Dianye Zhang, Shuqi Qin, Yunfeng Peng, Guibiao Yang, Jun Wang, Jianchun Yu, Bin Wei, Yang Liu, Qinlu Li, Luyao Kang, Yuanyuan Wang, Yuanhe Yang   +13 more
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Heterotrophic glucose uptake and respiration in Lake Kinneret

Hydrobiologia, 1979
The turnover times of glucose, averaged for 0–10 m in the upper waters of Lake Kinneret and measured by the addition of single or multiple concentrations of substrate, ranged from 23 to 188 hours and 1 to 87 hours respectively. Potential uptake rates (estimated as Vmax) ranged from 0.095 to 1.94 µg glucose l−1h−1, while measured uptake rates varied ...
T. Berman, O. Hadas, U. Marchaim
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Estimates of soil heterotrophic respiration in global terrestrial ecosystems

2023
Soil heterotrophic respiration (RH) is one of the largest and most uncertain components of terrestrial carbon cycle, which reflects the carbon loss from soils to the atmosphere due to microbial decomposition of soil organic carbon and litter debris. However, RH estimates vary greatly using different approaches, requiring RH estimates from different ...
Xiaolu Tang, Zhihan Yang, Tao Zhou
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