Copyright 201x | Duplication of this product and its content in print or digital form for the purpose
of sharing with others is prohibited without permission from Society for Advancement of Hispanics/Chicanos and Native Americans in Science (SACNAS).
ap021 INFLUENCES OF YARD MANAGEMENT INTENSITY ON URBAN SOIL BIOGEOCHEMISTRY
- Viviana Penuela Useche ;
- David Lewis ;
n/a
INFLUENCES OF YARD MANAGEMENT INTENSITY ON URBAN SOIL BIOGEOCHEMISTRY
Viviana Penuela Useche, David Lewis.
University of South Florida, Tampa, FL.
Irrigation with reclaimed water is an increasingly popular water conservation strategy, yet the high salinity and nutrient content of reclaimed water has the potential to negatively affect soil properties. At 40 households in urban, subtropical Tampa, Florida, we surveyed residents for their lawn management behaviors and quantified irrigation water and soil chemistry. We tested whether there are distinct lawn management systems characterized by systematic differences in reclaimed water use and irrigation and fertilization practices. We then investigated whether soil biogeochemistry responds to lawn management systems. Three management behaviors co-occurred, as households that used reclaimed water tended to fertilize and irrigate more frequently. Reclaimed water had significantly higher conductivity and phosphate content than potable water. Distinct, high-amendment and low-amendment lawn management systems are thus evident. Residential soils receiving the high-amendment strategy exhibited higher conductivity and microbial biomass than soils receiving a low-amendment strategy. These findings suggest that the high-amendment strategy increases the input of some nutrients to soil and acts as a nutrient resource for soil microorganisms. These results further suggest that hierarchical social interactions between municipalities and individual households should be incorporated into the emerging conceptual framework of ecological urbanization. Specifically, as municipalities make management alternatives (reclaimed water) available to households, they may introduce spatial ecological variability at the finer within-neighborhood scale. Residential lawn management affects regional water supplies both through water consumption and nutrient runoff, and these results could inform how reclaimed water is advertised as a conservation measure as well as a source of soil fertility.
2015 SACNAS AbstractsExit
Search
More Information
Event Sponsors
Conference Grant Funders
- National Institute of General Medical Sciences – National Institute of Health
- National Security Agency (NSA) - Department of Defense
Platinum Sponsors
- Central Intelligence Agency
- National Geospatial-Intelligence Agency (NGA)
- National Security Agency (NSA) - Department of Defense
Gold Sponsors
Silver Sponsors
Bronze Sponsors
- Genentech
- National Aeronautics and Space Administration (NASA) - Minority University Research and Education Project (MUREP)
- Texas A&M University-Corpus Christi (TAMUCC) - College of Science & Engineering
- Texas A&M University - Graduate and Professional Studies
- University of Southern California - Keck School of Medicine, Department of Preventive Medicine
Student Presentations Sponsors
- American Chemical Society
- American Society for Biochemistry and Molecular Biology
- Biophysical Society
- Botanical Society of America
- Genetics Society of America
- Maryland Sea Grant
- Society for Industrial and Applied Mathematics
- St. Jude Children’s Research Hospital
- The University of Kansas-Department of Geology