Download Biological Diversity and Function in Soils (Ecological by Richard Bardgett, Michael Usher, David Hopkins PDF

By Richard Bardgett, Michael Usher, David Hopkins

Even supposing soil presents actual aid for crops and contributes to a number of vital environmental features, many questions on the ecological value of its organic variety, and the way environment functionality is affected, have by no means been requested. contemporary technical advancements, in addition to new experimental and modelling ways, have ended in a renaissance in soil biodiversity learn. the foremost parts are mirrored during this new quantity, which brings jointly many major contributions at the function and value of soil biota.

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Soil organic matter, even at only 50 cm depth in the field, can be 1400 years older than that at the surface (Paul et al. 2001). Yet, when brought into the laboratory it decomposes at the same rate as that from the surface (Collins et al. 2000). The age and amount of carbon held in soils is greater than above-ground, and as it becomes available, provides an energy base for biodiversity, above and below-ground. This evolution of physical and chemical patterning over eons, as well as consequences of biological evolution, produces many characteristic and complex biotic habitats within and across ecosystems, and may have a greater impact on patterning of soil biodiversity than plants in some ecosystems (Virginia & Wall 1999; Kaufmann 2001; Williamson & Harrison 2002).

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