By Richard D. Bardgett

Aboveground-Belowground Linkages offers the main up to date and finished 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 old improvement of this box of ecology and evaluates what will be realized from the new proliferation of experiences at the ecological and biogeochemical importance of aboveground-belowground linkages. The ebook is dependent round 4 key issues: biotic interactions within the soil; plant neighborhood results; the position of aboveground shoppers; and the effect of species earnings and losses. A concluding bankruptcy attracts jointly this knowledge and identifies a couple of cross-cutting subject matters, together with attention of aboveground-belowground feedbacks that take place at diverse spatial and temporal scales, the results of those feedbacks for environment methods, and the way aboveground-belowground interactions hyperlink to human-induced international switch.

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

Aboveground-Belowground Linkages presents the main updated and finished synthesis of modern advances in our realizing 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.

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

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However, De Deyn et al. (2007) found no effects of aboveground and belowground herbivory 40 • 2 Biotic interactions as ecosystem drivers by wireworms on decomposer nematodes, although the wireworms did facilitate root-feeding nematode, which was thought to be driven by shifts in plant species composition. Most studies to date on this topic have been done under specific and often artificial conditions, and so the consequences of these complex aboveground– belowground interactions for vegetation dynamics in real ecosystems are little understood.

2007; Gordon et al. 2008). However, a primary mechanism by which nutrients are liberated from microbes and made locally available for uptake by plants is through predation of microbes by protozoa, nematodes, and microarthropods, which excrete nutrients that are in excess of their own requirements into the soil environment and in forms that are biologically available. This remobilization of nutrients is termed the ‘microbial loop’ (Clarholm 1985) and is considered to be a primary control point of nutrient availability in the rhizosphere according to the nutrient-enrichment model of Moore et al.

Moreover, across the range of soils examined, the soil fungal to bacterial ratio was positively correlated with the soil carbon-to-nitrogen ratio (Fig. 8), although this might reflect the integrated effects of a suite of other soil characteristics, including soil pH, soil organic matter content, and the quality of plant carbon inputs entering the soil (Bardgett and McAlister 1999; Van der Heijden et al. 2008; Fierer et al. 2009). Importantly, these types of energy channels are interchangeable: the fungal channel often becomes increasingly important as primary succession proceeds (Ohtonen et al.

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