نتایج جستجو برای: biogeochemical process
تعداد نتایج: 1318793 فیلتر نتایج به سال:
In this paper, we review the state of the art and major challenges in current efforts to incorporate biogeochemical functional groups into models that can be applied on basin-wide and global scales, with an emphasis on models that might ultimately be used to predict how biogeochemical cycles in the ocean will respond to global warming. We define the term ‘‘biogeochemical functional group’’ to r...
Substantial improvements are required in the current suite of numerical models if we are to better understand the present ocean biogeochemical state and predict potential future responses to anthropogenic perturbations. At present, major impediments to marine biogeochemical modeling include the inadequate representation of multi-element cycling and community structure, large-scale physical circ...
We use innovative experimental approaches to measure the extent of biogeochemical interaction driven by the input of terrestrial organic carbon to the coastal oceans. The evolution of organic carbon from continents to oceans is not well understood. Remineralization of this carbon plays an unknown but apparently important role in stimulating productivity. This process and associated phenomena al...
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...
Different methods have been developed for mineral exploration so far, amongst which biological-based methods known as geomicrobiological studies are of the most recent ones. Geomicrobiology as an interdisciplinary approach has achieved great progresses during the past two decades and involves the study of microbes in a number of fundamental geological processes, both in the past and present. Th...
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...
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