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Filtering by: Creator Valachovic, Y.S. Resource Type Dissertation

The Biogeochemistry of nitrogen and phosphorus cycling in native shrub ecosystems in Senegal

Creator:

Dossa, Ekw'e Lokossou, 1960-

Abstract:

Two native shrub species (Piliostigma reticulatum and Guiera senegalensis) are prominent vegetation components in farmers’ fields in Senegal. However, their role in nutrient cycling and ecosystem function has largely been overlooked. A study including both laboratory and field experiments was conducted to evaluate potential biophysical interactions of the two shrub...

Resource Type:

Dissertation

Full Text:

, samples were hot-water extracted (Valachovic et al., 2004). Total polyphenol was determined in the
Microbial community structure as influenced by season and stand age in a Douglas-fir (Pseudotsuga menziesii) ecosystem

Creator:

Kucera, Jennifer Moore

Abstract:

Forest harvest can have significant impacts on forest ecosystems that may influence the capacity of soils to sequester carbon (C). The microbial community controls decomposition, which is a critical process in partitioning litter- and root-C between CO₂ and storage in semi-permanent soil-C pools. The objectives of this study were to...

Resource Type:

Dissertation

Full Text:

concentrations (Hattenschwiler and Vitousek, 2000; Valachovic et al., 2004). At the center of plant material
Assessing the sustainability of management practices for planted forests across an environmental gradient in New Zealand

Creator:

Kiyvyra, Alicia L.

Abstract:

Sustainable management of planted forests requires maintenance of soil function to promote 1) root growth; 2) storage and cycling of water and nutrients; 3) optimal gas exchange; and 4) biological activity. Soil quality measurements can be used to monitor short- and long-term changes in these soil functions, allowing managers to...

Resource Type:

Dissertation