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| Web URL(s): | https://scisoc.confex.com/crops/2015am/webprogram/Paper91670.html
Last checked: 11/06/2015 |
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| Publication Type:
| Report |
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| Content Type: | Abstract or Summary only |
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| Author(s): | Trammell, L. E.;
Pataki, Diane E.;
Groffman, Peter;
Bettez, Neil;
Morse, Jennifer L. |
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| Author Affiliation: | Trammell: Department of Plant and Soil Sciences, University of Delaware, Newark, DE; Pataki: Department of Biology, University of Utah, Salt Lake City, UT; Groffman and Bettez: Cary Institute Ecosystem Studies, Millbrook, NY; Morse: Department of Environmental Science and Management, Portland State University, Portland, OR |
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| Title: | Soil carbon content and δ13 C in residential lawns across seven major U.S. cities |
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| Section: | SSSA division: Urban and anthropogenic soils
Other records with the "SSSA division: Urban and anthropogenic soils" Section
Symposium--Carbon storage and dynamics in urban soils
Other records with the "Symposium--Carbon storage and dynamics in urban soils" Section
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| Meeting Info.: | Minneapolis, Minnesota: November 15-18, 2015 |
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| Source: | ASA, CSSA and SSSA International Annual Meetings. 2015, p. 91670. |
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| Publishing Information: | [Milwaukee, Wisconsin]: [American Society of Agronomy and the Entomological Society of America] |
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| # of Pages: | 1 |
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| Keywords: | TIC Keywords: Carbon; Chemical properties of soil; Chemical soil analysis; Lawn maintenance; Regional variation; Site factors
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| Abstract/Contents: | "An emerging theory in urban ecology is that anthropogenic drivers can dominate over natural drivers in controlling ecosystem responses. Residential lawns are an ideal land cover type to study this since sociological drivers (e.g., management practices) can control ecosystem processes. The overarching goal of this study is to identify social and natural drivers of soil C dynamics across multiple cities and to test whether the same drivers control soil C across these cities (i.e., homogenization hypothesis). We studied residential yards in seven cities across the U.S. that span major climatic regions: Baltimore, Boston, Los Angeles, Miami, Minneapolis-St. Paul, Phoenix, and Salt Lake City. Within each residential lawn, soil cores and lawn samples were collected and analyzed for δ13C and C content. Soil C content was positively related to housing age at the soil surface and at 10-30 cm soil depth in Baltimore (r2=0.69, p<0.001 and r2 =0.35, p<0.01, respectively) and Boston (r2 =0.38, p<0.001 and r2 =0.30, p<0.001, respectively). In Baltimore, the surface soil (0-10cm) had significantly greater respiration rates in older yards (houses built before 1960) versus newer yards (p<0.05). In Boston, the surface soil had significantly greater mineralization rates in the older versus newer yards (p<0.05). In the deeper soil horizon (10-30 cm), older yards had greater nitrification rates than newer yards in both cities (p<0.05). We found no significant differences in soil C based on lawn fertilization or irrigation practices in Baltimore or Boston. In both cities, the surface soil δ13C was positively related to plant δ13C (p<0.05) as expected. Soil C content appears to be driven by time and soil microbial processes and not directly by homeowner management practices. Further analyses of the other cities will provide insight as to whether these patterns are consistent at the national scale, and can help identify mechanisms that may be controlling similar soil C patterns across multiple cities." |
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| Language: | English |
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| References: | 0 |
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| Note: | This item is an abstract only!
"99-4" |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Trammell, L. E., D. E. Pataki, P. Groffman, N. Bettez, and J. L. Morse. 2015. Soil carbon content and δ13 C in residential lawns across seven major U.S. cities. Agron. Abr. p. 91670. |
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| Web URL(s):
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Last checked: 11/06/2015 |
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