Cross-site comparison of soil microbial biomass, soil nutrient status, and nematode trophic groups. Wright, C. & Coleman, D. Pedobiologia, 2000.
Paper abstract bibtex Soil microbial biomass, soil nutrient status, and nematode trophic groups were examined at the Coweeta. Harvard Forest, and Hubbard Brook Long Term Ecological Research (LTER) sites. Soils were divided into standardized depths (0-5 cm and 5-10 cm) for all analyses. Microbial biomass, nematode abundance and labile soil phosphorus levels were significantly higher in the 0-5 cm soil than in the 5-10 cm soil. Overall, both Harvard Forest and Hubbard Brook had greater nematode abundance and oil phosphorus than Coweeta, while Harvard Forest had the highest levels of microbial biomass. Bacterial feeders, followed by fungal feeders and Tylenchidae were the dominant nematode trophic groups at all three sites. Soil factors such as organic matter, root biomass and total soil C and N contributed to increased levels of microbial biomass, nematode abundance and soil phosphorus levels. In contrast, litter quality and climatic factors such as temperature and moisture apparently had little effect upon the parameters measured. This study illustrates the complex interrelationships between decomposer communities, climate, litter quantity, litter quality, soil nutrients, and site specific ecosystem processes. Continued long-term, cross-site ecosystem studies remain necessary to better understand the complex and dynamic processes causing variability both within and between ecosystems.
@article{wright_cross-site_2000,
title = {Cross-site comparison of soil microbial biomass, soil nutrient status, and nematode trophic groups.},
volume = {44},
url = {http://cwt33.ecology.uga.edu/publications/19.pdf},
abstract = {Soil microbial biomass, soil nutrient status, and nematode trophic groups were examined at the Coweeta. Harvard Forest, and Hubbard Brook Long Term Ecological Research (LTER) sites. Soils were divided into standardized depths (0-5 cm and 5-10 cm) for all analyses. Microbial biomass, nematode abundance and labile soil phosphorus levels were significantly higher in the 0-5 cm soil than in the 5-10 cm soil. Overall, both Harvard Forest and Hubbard Brook had greater nematode abundance and oil phosphorus than Coweeta, while Harvard Forest had the highest levels of microbial biomass. Bacterial feeders, followed by fungal feeders and Tylenchidae were the dominant nematode trophic groups at all three sites. Soil factors such as organic matter, root biomass and total soil C and N contributed to increased levels of microbial biomass, nematode abundance and soil phosphorus levels. In contrast, litter quality and climatic factors such as temperature and moisture apparently had little effect upon the parameters measured. This study illustrates the complex interrelationships between decomposer communities, climate, litter quantity, litter quality, soil nutrients, and site specific ecosystem processes. Continued long-term, cross-site ecosystem studies remain necessary to better understand the complex and dynamic processes causing variability both within and between ecosystems.},
journal = {Pedobiologia},
author = {Wright, C.J. and Coleman, D.C.},
year = {2000},
keywords = {HBR, CWT}
}
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