منابع مشابه
Changes in Biogeochemical Cycles
Co-Investigators: John D. Aber, University of New Hampshire William R. Emanuel, University of Virginia Leonard A. Fisk, University of Michigan Changsheng Li, University of New Hampshire Jerry M. Melillo, Marine Biological Laboratory Bruce J. Peterson, Marine Biological Laboratory Barrett N. Rock, University of New Hampshire David L. Skole, University of New Hampshire Charles J. Vorosmarty, Univ...
متن کاملArchaea in biogeochemical cycles.
Archaea constitute a considerable fraction of the microbial biomass on Earth. Like Bacteria they have evolved a variety of energy metabolisms using organic and/or inorganic electron donors and acceptors, and many of them are able to fix carbon from inorganic sources. Archaea thus play crucial roles in the Earth's global geochemical cycles and influence greenhouse gas emissions. Methanogenesis a...
متن کاملResponses and feedbacks of coupled biogeochemical cycles to climate change: examples from terrestrial ecosystems
© The Ecological Society of America www.frontiersinecology.org I an era of extensive environmental change, human activity – particularly the harvest of resources for food, fiber, and fuel – is substantially altering Earth’s climate and its element cycles (Vitousek et al. 1997; Figure 1). The need for energy to support economic growth has increased atmospheric carbon dioxide (CO2) concentrations...
متن کاملSome Perspectives of the Major Biogeochemical Cycles
H a o et al. took an a p p r o a c h of n o r m a l elas ticity analysis e m p l o y i n g t he usua l conven tions of sign. T h e essential f ea tu re , they state, is the avoidance in the i r analysis of t h e effects of stress s ingulari t ies . A re la ted p r o b l e m is in the p iezomagnet ic m o m e n t as it is p lo t ted across a fault. T h e y n o t e tha t stress a n d the piezoma...
متن کاملPetri nets of groups in biogeochemical cycles
Petri nets concepts provide additional tool for the modeling of metabolic networks. Especially the concepts of siphon and trap are used to study the role of trios phosphate isomerase’s (TPI) in trypanosome brucei metabolism. In this paper we show that the marked graph for groups with generating set has subset of places whose input transitions is equal to the output transitions and both of them ...
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ژورنال
عنوان ژورنال: Frontiers in Ecology and the Environment
سال: 2011
ISSN: 1540-9295,1540-9309
DOI: 10.1890/090223