Titlebook: Methods in Ecosystem Science; Osvaldo E. Sala,Robert B. Jackson,Robert W. Howart Book 2000 Springer Science+Business Media New York 2000 b

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Microbial Carbon Cycling in Pelagic Ecosystems: Microbial Methods for Ecosystem Scientists then, that ecologists working at the ecosystem scale would be naturally drawn to the study of microorganisms. The factors that regulate the abundance, distribution, growth rate, and respiration of these microorganisms are in large measure the factors that regulate some of the functioning of the ecosystem.

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Introduction. Methods in Ecosystem Science: Progress, Tradeoffs, and Limitationsnment (Odum 1959). It includes plants, animals, and microorganisms, and studies the interactions among them and with the soil, water, and the atmosphere. In pursuing general patterns at the ecosystem level, and when trying to understand the mechanisms controlling these patterns, ecosystem scientists

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Stand Structure in Terrestrial Ecosystemsined as an area of relatively uniform physical environmental conditions, vegetation structure, and plant community composition (Barbour et al. 1987). By vegetation structure we mean the three-dimensional distribution of aboveground phyto-mass integrated over some period of time. We will not consider

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Methods of Estimating Aboveground Net Primary ProductivityNPP: the global carbon balance, the location of the missing carbon sink, and predictions of global climate change (see Chapter 3). Primary productivity represents the major input of carbon and energy into ecosystems and McNaughton (1989) proposed NPP as an integrative variable of the functioning of

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Methods of Estimating Belowground Net Primary Productionrrestrial ecosystems (Milchunas and Lauenroth 1992; Nadelhoffer and Raich 1992). Estimates of the ratio of BNPP to net primary production (NPP) across ecosystem types range from less than 0.20 to more than 0.80 (Bray 1963, Coleman 1976). Part of this range can be explained by differences among ecosy

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The Measurement of Primary Production in Aquatic Ecosystemsergy comes from sunlight, which is converted into the energy of organic matter in living biomass through the process of primary production, and from imports of organic matter from adjacent ecosystems. This import of energy in organic matter is, of course, dependent upon primary production in the “up

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Decomposition and Soil Organic Matter Dynamicsons such as ammonium, calcium (Ca.), potassium (K.), and other elements originally assimilated by the organisms now decomposing. At various points along this path the decomposing organic matter is consumed and metabolized by other organisms, which themselves will die and decompose. Decomposition is

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