By Richard D. Bardgett

ISBN-10: 0199546878

ISBN-13: 9780199546879

ISBN-10: 0199546886

ISBN-13: 9780199546886

Aboveground-Belowground Linkages presents the main updated and accomplished synthesis of contemporary advances in our figuring out of the jobs that interactions among aboveground and belowground groups play in regulating the constitution and serve as of terrestrial ecosystems, and their responses to worldwide switch. It charts the historic improvement of this box of ecology and evaluates what should be discovered from the hot proliferation of reports at the ecological and biogeochemical importance of aboveground-belowground linkages. The publication is based round 4 key issues: biotic interactions within the soil; plant neighborhood results; the position of aboveground shoppers; and the effect of species profits and losses. A concluding bankruptcy attracts jointly this knowledge and identifies a few cross-cutting topics, together with attention of aboveground-belowground feedbacks that take place at various spatial and temporal scales, the implications of those feedbacks for surroundings methods, and the way aboveground-belowground interactions hyperlink to human-induced worldwide switch.

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Additional resources for Aboveground-Belowground Linkages: Biotic Interactions, Ecosystem Processes, and Global Change (Oxford Series in Ecology and Evolution)

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This idea has been proposed by a number of authors (Schimel and Bennett 2004; Jones et al. 2005; Harrison et al. 2007), but as far as we are aware remains untested. As discussed above, microbes can influence ecosystem nitrogen availability and hence plant productivity by rapid transformation of nitrogen to more mobile forms, such as nitrate through the bacterial process of nitrification, and through denitrification whereby nitrate is lost to the atmosphere as nitrogen gases under anaerobic conditions.

For instance, in tallgrass prairie, Hartnett and Wilson (1999) found that the suppression of arbuscular mycorrhizal fungal infection through the application of a fungicide enhanced plant species diversity. This response was attributed to a reduction in the abundance of competitively dominant and obligately mycotrophic C4 tall grasses, and consequent competitive release of subordinate facultative mycotrophs. Likewise, it was suggested by Connell and Lowman (1989) that in tropical rainforests, ectomycorrhizal fungal associations can encourage dominance of particular tree species at the expense of other (arbuscular mycorrhizal) tree species which are less able to acquire nutrients and tolerate pathogen attack, thereby reducing species coexistence.

2003). Hence, nutrient availability to plants can be controlled several trophic steps away from root through top-down control. Phytophagous nematodes Collembolans Predaceous mites Cryptostigmatic mites Roots Saprophytic fungi Fungivorous nematodes Resistant Nematodefeeding mites Predaceous nematodes Bacteriophagous nematodes Detritus Flagellates Labile Amoebae Bacteria Inorganic nitrogen Predaceous collembolans Noncryptostigmatic mites Bacteriophagous mites Fig. 5 Schematic of the belowground food web from the shortgrass steppe of Colorado (Hunt et al.

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Aboveground-Belowground Linkages: Biotic Interactions, Ecosystem Processes, and Global Change (Oxford Series in Ecology and Evolution) by Richard D. Bardgett


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