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      Can intra-specific variation in carnivore home-range size be explained using remote-sensing estimates of environmental productivity?

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      Écoscience
      Ecoscience

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          Global products of vegetation leaf area and fraction absorbed PAR from year one of MODIS data

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            Modeling the Exchanges of Energy, Water, and Carbon Between Continents and the Atmosphere

            Atmospheric general circulation models used for climate simulation and weather forecasting require the fluxes of radiation, heat, water vapor, and momentum across the land-atmosphere interface to be specified. These fluxes are calculated by submodels called land surface parameterizations. Over the last 20 years, these parameterizations have evolved from simple, unrealistic schemes into credible representations of the global soil-vegetation-atmosphere transfer system as advances in plant physiological and hydrological research, advances in satellite data interpretation, and the results of large-scale field experiments have been exploited. Some modern schemes incorporate biogeochemical and ecological knowledge and, when coupled with advanced climate and ocean models, will be capable of modeling the biological and physical responses of the Earth system to global change, for example, increasing atmospheric carbon dioxide.
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              Ecosystem-level patterns of primary productivity and herbivory in terrestrial habitats.

              Ecosystems are structurally organized as food webs within which energy is transmitted between trophic levels and dissipated into the environment. Energy flow between two trophic levels is given by the amount of production at the lower level and by the proportion of production that is consumed, assimilated and respired at the higher level. Considerable evidence indicates that food-web structure varies predictably in different habitats, but much less is known about quantitative relationships among food web fluxes. Many of the energetic properties of herbivores in African game parks are associated with rainfall and, by inference, with net primary productivity. Respiratory costs per unit production at the consumer trophic level are higher for homeotherms than for heterotherms. Plant secondary chemicals affect herbivore dietary choices and the allocation of plant resources to those chemicals varies with resource availability. How these phenomena are translated into ecosystem fluxes is unknown. We present evidence that herbivore biomass, consumption and productivity are closely correlated with plant productivity, suggesting that the latter is a principal integrator and indicator of functional processes in food webs.
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                Author and article information

                Journal
                Écoscience
                Écoscience
                Ecoscience
                1195-6860
                2376-7626
                March 23 2016
                March 23 2016
                : 12
                : 1
                : 68-75
                Article
                10.2980/i1195-6860-12-1-68.1
                2f4a3f58-129b-436b-8a85-e91e9d9c84f9
                © 2016
                History

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