Full TGIF Record # 118632
Item 1 of 1
DOI:10.2134/jeq2006.0164
Web URL(s):https://dl.sciencesocieties.org/publications/jeq/articles/35/6/2425
    Last checked: 11/07/2016
    Access conditions: Item is within a limited-access website
https://dl.sciencesocieties.org/publications/jeq/pdfs/35/6/2425
    Last checked: 11/08/2016
    Requires: PDF Reader
    Access conditions: Item is within a limited-access website
Publication Type:
i
Refereed
Author(s):Hale, Rebecca L.; Groffman, Peter M.
Author Affiliation:Hale: Hampshire College, Amherst, Massaschusetts; Groffman: Institute of Ecosystem Studies, Millbrook, New York
Title:Chloride effects on nitrogen dynamics in forested and suburban stream debris dams
Section:Technical reports: Wetlands and aquatic processes
Other records with the "Technical reports: Wetlands and aquatic processes" Section
Source:Journal of Environmental Quality. Vol. 35, No. 6, November/December 2006, p. 2425-2432.
Publishing Information:Madison, Wisconsin: American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America
# of Pages:8
Keywords:TIC Keywords: Nitrates; Chlorine; Nitrogen cycle; Streams; Nitrogen; Organic matter; Enzymes; Watersheds
Abstract/Contents:"Organic debris dams (accumulations of organic material) can function as "hotspots" of nitrogen (N) processing in streams. Surburban streams are often characterized by high flows that prevent the accumulation of organic debris and by elevated concentrations of solutes, especially nitrate (NO3-) and chloride (Cl-). In this study we (1) studied the effects of urbanization on the extent and characteristics of debris dams in large and small streams and (2) evaluated the effects of NO3- and Cl- on rates of N cycle processes in these debris dams. In some suburban streams debris dams were small and rare, but in others factors that reduce the effects of high stream flows fostered the maintenance of debris dams. Ambient denitrification enzyme activity (DEA) in these suburban and forested streams was positively correlated with stream NO3- concentrations. In laboratory microcosms, DEA in debris dam material from a forested reference stream was increased by NO3- additions. Chloride additions constrained the response of DEA to NO3- additions in material from the forested stream, but had no effect on DEA in material from streams with a history of high Cl- levels. Chloride additions changed the sign of net N mineralization from negative (consumption of inorganic N) to positive in debris dam material from the forested reference stream, but had no effect on net mineralization in material from streams with a history of exposure to Cl-. Understanding the factors regulating the maintenance and N cycling activity of organic debris, and incorporating them into urban stream management plans could have important effects on N dynamics in suburban watersheds."
Language:English
References:43
Note:Tables
Graphs
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Hale, R. L., and P. M. Groffman. 2006. Chloride effects on nitrogen dynamics in forested and suburban stream debris dams. J. Environ. Qual. 35(6):p. 2425-2432.
Fastlink to access this record outside TGIF: https://tic.msu.edu/tgif/flink?recno=118632
If there are problems with this record, send us feedback about record 118632.
Choices for finding the above item:
DOI: 10.2134/jeq2006.0164
Web URL(s):
https://dl.sciencesocieties.org/publications/jeq/articles/35/6/2425
    Last checked: 11/07/2016
    Access conditions: Item is within a limited-access website
https://dl.sciencesocieties.org/publications/jeq/pdfs/35/6/2425
    Last checked: 11/08/2016
    Requires: PDF Reader
    Access conditions: Item is within a limited-access website
Find Item @ MSU
MSU catalog number: S 900 .J6
Find from within TIC:
   Digitally in TIC by record number.
Request through your local library's inter-library loan service (bring or send a copy of this TGIF record)