Assistant Professor
Office: Agricultural and Life Science 3041
Phone: 541-737-5712 (Temporary)
Fax: 541-737-5725
E-Mail: 
Department Website: Department of Crop and Soil Science
Personal Website: Personal Web Page
Please Inquire
Projects: 
Publications:
Pett-Ridge, J. C., J. K. Barrows, and L. A. Derry. 2009. Ca/Sr and 87Sr/86Sr ratios as tracers of Ca and Sr cycling and inputs in a humid tropical forest. Chemical Geology. http://dx.doi.org/10.1016/j.chemgeo.2008.11.022
Pett-Ridge, J.C., L. A. Derry, and A. C. Kurtz. 2009. Sr isotopes as a tracer of weathering processes and dust inputs in a tropical granitoid watershed, Luquillo Mountains, Puerto Rico. Geochimica et Cosmochimica Acta 73:25-43. http://dx.doi.org/10.1016/j.gca.2008.09.032
Pett-Ridge, J. C., V. M. Monastra, L. A. Derry, and O. A. Chadwick. 2007. Importance of atmospheric inputs and Fe-oxides in controlling soil uranium budgets and behavior along a Hawaiian chronosequence. Chemical Geology, 244, 691-707. http://dx.doi.org/10.1016/j.chemgeo.2007.07.016
A.B. Environmental Earth Science Dartmouth College Ph.D. Isotope Geochemistry & Biogeochemistry Cornell University
TBA - Fall 2009
Julie is interested in understanding the controls on chemical weathering, the connections between chemical weathering and the carbon cycle, and ecosystem biogeochemical cycles. Chemical weathering is important because it determines the flux of dissolved solutes and sediments from continents to oceans and modulates climate change by sequestering atmospheric CO2 on long timescales. On shorter timescales chemical weathering affects biogeochemical cycling by supplying nutrients to ecosystems. She uses soil gradients in parent material lithology, age, and climate to investigate controls on weathering and ecosystem biogeochemistry. Her research employs trace element and stable and radiogenic isotopic tracers, and typically extends from soil profile to watershed scale.
