Pedogenesis , nutrient dynamics , and ecosystem development : the legacy of T . W . Walker
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Applying Soil Ecological Knowledge to Restore Ecosystem Services
Ecosystem degradation resulting from resource extraction, land-use change, and invasion by exotic species alters numerous functions and services provided by intact and unexploited ecosystems. Ecological restoration is the human-facilitated improvement of a degraded ecosystem and represents an important means to repair or reinstate many natural services in degraded ecosystems ( Table 5.6.1 ). Re...
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The dynamics and persistence of proteinaceous compounds during pedogenesis are major mechanisms of soil formation and determinants of organic matter (OM) turnover. We investigated the accumulation patterns of proteinogenic amino acids associated with minerals dominated by permanently negative charges (primary silica minerals) and related these to vegetative and belowground microbial succession ...
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Succession provides a temporal framework in which to understand ecological processes. Studies of community assembly and changes in species diversity and nutrient cycling, for example, benefit greatly from the temporal perspective that succession offers. The temporal consequences of species interactions throughout the life history of each species are also well integrated into the conceptual fram...
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Background, aim, and scope Changes in bioavailability of phosphorus (P) during pedogenesis and ecosystem development have been shown for geogenic calcium phosphate (Ca-P). However, very little is known about long-term changes of biogenic Ca-P in soil. Materials and methods Long-term transformation characteristics of biogenic Ca-P were examined using anthropogenic soils along a chronosequence fr...
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Understanding of general ecosystem principles may be improved by comparing disparate ecosystems. We compared nutrien t cycling in lakes and streams to evaluate whether contrasts in hydrologic properties lead to differen t controls and differen t rates of in ternal nutrien t cycling. Our primary focus was nutrien t cycling that resu lts in increased productivity, so we quantified nutrien t cycli...
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