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Biogeochemistry Laboratory Support
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Biogeochemical cycles are important controls over the structure and function of forest ecosystems. The USGS Laboratory in Biogeochemistry focuses on improving understanding of biogeochemical cycling in forests and watersheds of the Pacific Northwest. This area displays a globally unique range of chemical concentrations in plants, soils, air, and water due to human-caused and natural disturbances. The purpose of this task is to provide financial support for the Biogeochemistry Lab. The laboratory has the flexibility to adapt and test new methods for the study of forest and watershed biogeochemistry in the Northwest. State-of-the-art laboratory facilities, trained support staff, and methods ensure that studies will be comparable across time. Laboratory analyses are used to support a full range of basic and applied research projects in forest and watershed ecosystem science.
van Huysen, T., 2009, Nitrogen and Phosphorus Dynamics during Decomposition of Multiple Litter Types in Temperate Coniferous Forests--PhD Dissertation: Corvallis, OR, Oregon State University, 160 p. [Highlight] [FullText] Catalog No: 2240 Matkins, J., 2009, Decomposition and Nitrogen Dynamics of Red Alder and Douglas-fir Leaf Litter in Oregon Coast Range Riparian Forests: Corvallis, OR, Oregon State University--M.S. Thesis, 159 p. [Highlight] [FullText] Catalog No: 2248 Beldin, S.I., Perakis, S.S., 2009, Unearthing the Secrets of the Forest: U.S. Geological Survey Fact Sheet Fact Sheet 2009-3078 , p. 4. [Highlight] [FullText] Catalog No: 2255 Scott, E.E., Hibbs, D.E., Perakis, S.S., 2009, The potential utility of stable isotopes for food web analysis in Douglas-fir and red alder riparian forests of western Oregon: Northwest Science, v. 83, no. 4, p. 315-324. [Highlight] [FullText] Catalog No: 2323 Perakis, S.S., Hedin, L.O., 2007, State factor relationships of dissolved organic carbon and nitrogen losses from unpolluted temperate forest watersheds: Journal of Geophysical Research, v. 112, p. 7. [Highlight] [FullText] copyrighted material courtesy of American Geophysical Union reproduced by permission Catalog No: 1635 Perakis, S.S., Kellogg, C.H., 2007, Imprint of oaks on nitrogen availability and d15N in California grassland-savanna- A case of enhanced N inputs?: Plant Ecology, v. 191, p. 209-220. [Highlight] [Abs] [FullText] Catalog No: 1701 Sinkhorn, E.R., 2007, Non-Linear Nitrogen Dynamics and Calcium Depletion along a Temperate Forest Soil Nitrogen Gradient: Corvallis, OR, Oregon State University--M.S. Thesis, 207 p. [Highlight] [FullText] Catalog No: 1933 Hart, S., 2006, Riparian Litter Inputs to Streams in the Central Oregon Coast Range: Corvallis, OR, Oregon State University - M.S. Thesis, 102 p. [Highlight] [FullText] Catalog No: 1589 Perakis, S.S., Compton, J.E., Hedin, L.O., 2005, Nitrogen retention across a gradient of 15N additions to an unpolluted temperate forest soil in Chile: Ecology, v. 86, no. 1, p. 96-105. [Highlight] [FullText] Catalog No: 1301
Perakis, Steven S. - Supervisory Research Ecologist
Phone: 541-758-8786
Email: sperakis@usgs.gov
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