Nutrient Acquisition by Plants: An Ecological Perspective by N.B. Comerford (auth.), Prof.Dr. Hormoz BassiriRad (eds.)

By N.B. Comerford (auth.), Prof.Dr. Hormoz BassiriRad (eds.)

Adaptation and evolution of terrestrial vegetation count, to a wide quantity, on their skill to procure food. it is a glossy and integrative therapy of the mechanisms controlling plant nutrient uptake and the way crops reply to alterations within the atmosphere. the next key themes are lined: soil nutrient bioavailability; root responses to adaptations in nutrient offer; nitrogen fixation; rules of nutrient uptake through inner plant call for; root features; kinetics of nutrient uptake; root structure; existence span; mycorrhizae; responses to weather swap. This built-in view is helping us to appreciate the mechanisms that govern present-day plant groups and is vital in versions designed to foretell the reaction of vegetation to a altering climate.

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Extra resources for Nutrient Acquisition by Plants: An Ecological Perspective

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5 Soil Texture In addition to the abiotic factors discussed above, soil texture also has a significant influence on rates of mineralization of soil organic matter (also discussed in Chap. ). Fine-textured soils are usually associated with high contents of organic matter, and low rates of mineralization relative to coarse-textured soils (Burke 1989; Paul and Clark 1996; Koutika et al. 1999; Jobbagy and Jackson 2000). This has been attributed to the mineral particles physically protecting the organic matter from microbial decomposition.

1982; McClaugherty et al. 1985; Upadhyay and Singh 1985; White 1988). This increase has been attributed to the complexing of soluble polyphenols with protein (Berg and Theander 1984; Schlesinger 1985) as well as to the microbial synthesis of lignin-like materials (Paul and Clark 1996). Thus, increases in N content during decay could be related to either of these three processes, and so do not necessarily indicate the degree to which N “limits” decomposition. The previous section has largely focused on gross mineralization, but in addressing nutrient availability to plants, immobilization may be extremely important.

E. Prescott among chemical characteristics of litter (Taylor et al. 1991; Parton et al. 1994), and their biological integration within tissues, the search for a single factor that controls decay rate may be a fruitless exercise. Cornelissen et al. ,“features that enhance the functioning of living plants and their leaves in their natural environment”; Cornelissen 1996), such as growth form, toughness and even autumn coloration, may be effective ways of predicting the relative rates of decay of diverse litter types.

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