2005 BES Annual Meeting Presentation and Poster Abstracts
Jennifer C. Jenkins
Peter M. Groffman, Mary Cadenasso, J. Morgan Grove, Mary Cox, Steward T.A. Pickett, Richard V. Pouyat, and Ryan D. Boylan
Abstract: Given the rate of suburban and exurban expansion in the US, conversion of land to residential use is likely to be an important contributor to regional ecosystem dynamics, but little is known about how residential lands cycle C and N. In this study, we present preliminary results from a pilot study of turfgrass productivity, soil respiration, and soil C and N along a chronosequence of suburban lawns in South Burlington, VT ranging in age from 1 to 20 years. Ten of the 12 lawns in the pilot study were located in the same suburban development (the two oldest lawns were in an adjacent development) and established using identical home building and lawn seeding procedures. Preliminary results suggest that turfgrass productivity is not correlated with lawn age, but probably does vary widely with historical and current lawn management practices. Soil N stocks in the upper soil layers seem to increase almost linearly with lawn age, though soil C stocks appear roughly constant with time in both the 0-10 cm and 10-20 cm soil layers. The methods developed during this study are being implemented as part of a larger study taking place in the Rognel Heights, Glyndon, and Baisman Run neighborhoods of Baltimore. The Baltimore effort is a 3-year, NSF-funded study designed to test the relative strengths of multiple drivers of C stocks and fluxes in residential landscapes.