OCCRI Researchers

Title: Professor
Name: Kate Lajtha
Institution: Oregon State University
Department: Botany & Plant Pathology

Research Theme: Human activity has caused extensive changes in inputs of various nutrient and toxic elements to many ecosystems. My lab studies the changes in biogeochemical cycling, and the effects on the vegetative community, that has arisen from human activities. Most of my current research is focused in the H.J. Andrews Experimental Forest. We have established plots to examine the effects of changing detrital quality on C balance, and nutrient cycling and availability.

Research Fields:


Professional Activities:

American Geophysical Union (AGU) Session co-convener, Soil Carbon: Mechanisms of Stabilization.

US member, Environmental Sciences Panel, Deutsche Forschungsgemeinschaft (German Research Foundation) for Germany’s “Excellence Initiative”

National Ecological Observation Network (NEON) Biogeochemistry committee member

Member of organizing committee, 2nd International Conference on Mechanisms of Soil Organic Matter Stabilization, Monterey, CA, October 9-13, 2005.

Panel Member, NSF DEB Ecosystems (2004 – 2008)

Selected Publications:

Yano, Y., P. Sollins, K. Lajtha, M. Kleber, J. Baham, and B.A. Caldwell. Decoupling of dissolved organic C and N sorption in relation to soil mineral surface properties and pH. Biogeochemistry, in review.

Crow, S. E., C. Swanston, K. Lajtha, J. R. Brooks, and H. Kierstead. 2007. Interpreting density fractions: searching for meaningful soil organic matter pools. Biogeochemistry, in press.

Marshall, J.D., J.R. Brooks, and K. Lajtha. 2007. Sources of variation in the stable isotopic composition of plants. In Stable Isotopes in Ecology and Environmental Science 2nd Edition Eds. R. Mitchener and K. Lajtha. Blackwell Scientific, Oxford. In press.

Vanderbilt, K.L., K. Lajtha and F. Swanson. 2003. Biogeochemistry of unpolluted forested watersheds in the Oregon Cascades: temporal patterns of precipitation and stream nitrogen fluxes. Biogeochemistry 62:87-117.

Beldin, S. I., E. W. Sulzman, B. A. Caldwell, P. Sollins, K. Lajtha, and S. E. Crow. 2007. Cation exchange capacity of density fractions from paired conifer/grassland soils. Biology and Fertility of Soils, in press.