Titlebook: Nitrogen in Terrestrial Ecosystems; Questions of Product Carl Olof Tamm Book 1991 Springer-Verlag Berlin Heidelberg 1991 Landbewirtschaftun

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Nitrogen-Limited and Nitrogen-Depleted Terrestrial Ecosystems: Ecological Characteristics,Nitrogen-limited ecosystems are those where primary production increases markedly if nitrogen fertilizer is supplied. Nitrogen-depleted ecosystems are those where natural or human influences have led to large losses of nitrogen from the site. Nitrogen-depleted ecosystems are usually nitrogen-limited, while the reverse may or may not be true.

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Consequences of Increased Nitrogen Supply to Forests and Other Natural and Seminatural Terrestrial fferent tree species. As most foresters prefer to experiment with single-species stands (monocultures or naturally established) to minimize experimental error, species comparisons are relatively rare, except for nursery conditions and young plantations. One of the best experimental studies is still

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Book 1991cussed. Environmental changes caused by pollution from nitrogenous compounds and changes in landuse are also described. Organisms, plants, animals and microorganisms are all affecting nitrogen supply. Emphasis is placed on natural and anthropogenic transfer of nitrogen between ecosystems and also on

maintenance

Nitrogen in Plants and in Soils: Physiological and Microbiological Background for Biological Nitrogental relation between available nitrogen and plant cytoplasm. Animals generally show less variation in tissue composition than plants, but are equally dependent on a steady supply of nitrogen, preferably in the form of proteins or amino acids.