| An experimental design was set up in autumn 1997 in this stand to study the biogeochemical cycles of nutrients. |
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| Aquatic sediments host much of the bacterial biomass and biodiversity and play a key role in biogeochemical cycles. |
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| Chapters devoted to how the biosphere is energized and how that energy powers biogeochemical cycles follow. |
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| Chemical oceanography has to do with the composition of seawater and the biogeochemical cycles that affect it. |
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| Zooplankton also influence biogeochemical cycles by the consumption and production of particles and can control the dynamics of algal blooms. |
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| Support services correspond, in turn, to primary production and the major biogeochemical cycles. |
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| There can consequently be rapid changes in the bacterial community to maintain efficient processing of energy sources, and hence stable biogeochemical cycles. |
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| Quantify the interaction between the hydrological cycle and biogeochemical cycles. |
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| Alteration in catchment subsurface water balances through land-use change and pumping can affect lake biogeochemical cycles through changes in groundwater flow rates. |
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| The remOcean project will enable researchers to observe oceanic biogeochemical cycles from hard-to-reach regions in real time. |
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| The nitrogen cycle is interconnected with other biogeochemical cycles such as the carbon, the phosphorus, the sulphur and the water cycles. |
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| As a result, these essential nutrients alternate between inorganic and organic states as they rotate through their respective biogeochemical cycles. |
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| In fact, a defining characteristic of all inland aquatic ecosystems, including the most simple temporary bodies of highly saline water, is the occurrence of well-defined biogeochemical cycles. |
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| Development and adaptation of large-basin and national process and empirical models, which integrate hydrologic and biogeochemical cycles to improve prediction capabilities and provide decision support. |
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| Oxygen is involved to some degree in all the other biogeochemical cycles. |
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| Once ejected from their surface sites, these ions may be leached downward by percolating water to become removed from the biogeochemical cycles occurring in the upper part of the soil profile. |
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| To understand the links between biogeochemical cycles, vegetation, disturbance and climate across the full summer temperature gradient in the Arctic in order to better predict the response of ecosystems to changing climate. |
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| Global changes have resulted not only in degradation of the physical environment but also in considerable modification of landscape processes, including water and biogeochemical cycles and energy flow through ecosystems. |
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| Nitrogen is one of around 30 bioessential elements incorporated into biogeochemical cycles. |
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| Our understanding of the effects of timber harvest on biogeochemical cycles is not sufficient to predict the magnitude and duration of environmental responses to logging. |
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| The dynamics of terrestrial ecosystems vary, depending on the interaction of a number of biogeochemical cycles which humans can disrupt, particularly the carbon cycle, the nutrient cycles and the water cycle. |
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| In particular, it will be necessary to improve scientific bases significantly so as to arrive at a better cognitive modelling of the hydrological cycle and the associated biogeochemical cycles. |
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| The biophysical systems consist of the climatic cycle, hydrological cycle, biogeochemical cycles, soil, air and vegetative cover as well as the stocks of renewable and non-renewable resources. |
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| Ecology: the biogeochemical cycles Nitrogen cycle. |
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| They also alter the timing and magnitude of downstream fluxes of water, sediment, and ice, which modify biogeochemical cycles and the resulting structure and function of aquatic and riparian habitat. |
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| Finally, explosive volcanic eruptions release the greenhouse gas carbon dioxide and thus provide a deep source of carbon for biogeochemical cycles. |
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| Such land derived runoff of sediment nutrients, carbon, and contaminants can have large impacts on global biogeochemical cycles and marine and coastal ecosystems. |
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