Use of N Natural Abundance and N Species Concentrations to Assess N-Cycling in Constructed and Natural Coastal Wetlands
Natural abundance of N stable isotopes used in combination with concentrations may be useful indicators of N-cycling in wetlands. Concentrations and N signatures of NO3−, NH4+, and sediment organic nitrogen (SON) were measured in two impacted coastal golf course retention ponds and two natural mars...
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| Format: | Article |
| Language: | English |
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Wiley
2010-01-01
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| Series: | Applied and Environmental Soil Science |
| Online Access: | http://dx.doi.org/10.1155/2010/371259 |
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| author | C. Marjorie Aelion Melissa R. Engle Hongbo Ma |
| author_facet | C. Marjorie Aelion Melissa R. Engle Hongbo Ma |
| author_sort | C. Marjorie Aelion |
| collection | DOAJ |
| description | Natural abundance of N stable isotopes used in combination with concentrations may be useful indicators of N-cycling in wetlands. Concentrations and N signatures of NO3−, NH4+, and sediment organic nitrogen (SON) were measured in two impacted coastal golf course retention ponds and two natural marshes. Limited NO3− was detected in natural site surface water or pore water, but both isotopic signature and concentrations of NO3− in surface water of impacted sites indicated anthropogenic inputs. In natural sites, NH4+ concentrations were greatest in deeper pore water and least in surface water, suggesting diffusion predominates. The natural sites had greater %SON, and N indicated that the natural sites also had greater NH4+ released from SON mineralization than impacted sites. In NO3−-limited systems, neither concentrations nor N natural abundance was able to provide information on N-cycling, while processes associated with NH4+ were better elucidated by using both concentrations and N natural abundance. |
| format | Article |
| id | doaj-art-643b0b87847b48f891c512981db62ab0 |
| institution | Kabale University |
| issn | 1687-7667 1687-7675 |
| language | English |
| publishDate | 2010-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Applied and Environmental Soil Science |
| spelling | doaj-art-643b0b87847b48f891c512981db62ab02025-02-03T05:51:37ZengWileyApplied and Environmental Soil Science1687-76671687-76752010-01-01201010.1155/2010/371259371259Use of N Natural Abundance and N Species Concentrations to Assess N-Cycling in Constructed and Natural Coastal WetlandsC. Marjorie Aelion0Melissa R. Engle1Hongbo Ma2School of Public Health and Health Sciences, University of Massachusetts Amherst, Arnold House, 715 North Pleasant Street, Amherst, MA 01003, USASchool of Public Health and Health Sciences, University of Massachusetts Amherst, Arnold House, 715 North Pleasant Street, Amherst, MA 01003, USAInterdisciplinary Toxicology Program, The University of Georgia, N124 Paul D. Coverdell Center, Athens, GA 30602, USANatural abundance of N stable isotopes used in combination with concentrations may be useful indicators of N-cycling in wetlands. Concentrations and N signatures of NO3−, NH4+, and sediment organic nitrogen (SON) were measured in two impacted coastal golf course retention ponds and two natural marshes. Limited NO3− was detected in natural site surface water or pore water, but both isotopic signature and concentrations of NO3− in surface water of impacted sites indicated anthropogenic inputs. In natural sites, NH4+ concentrations were greatest in deeper pore water and least in surface water, suggesting diffusion predominates. The natural sites had greater %SON, and N indicated that the natural sites also had greater NH4+ released from SON mineralization than impacted sites. In NO3−-limited systems, neither concentrations nor N natural abundance was able to provide information on N-cycling, while processes associated with NH4+ were better elucidated by using both concentrations and N natural abundance.http://dx.doi.org/10.1155/2010/371259 |
| spellingShingle | C. Marjorie Aelion Melissa R. Engle Hongbo Ma Use of N Natural Abundance and N Species Concentrations to Assess N-Cycling in Constructed and Natural Coastal Wetlands Applied and Environmental Soil Science |
| title | Use of N Natural Abundance and N Species Concentrations to Assess N-Cycling in Constructed and Natural Coastal Wetlands |
| title_full | Use of N Natural Abundance and N Species Concentrations to Assess N-Cycling in Constructed and Natural Coastal Wetlands |
| title_fullStr | Use of N Natural Abundance and N Species Concentrations to Assess N-Cycling in Constructed and Natural Coastal Wetlands |
| title_full_unstemmed | Use of N Natural Abundance and N Species Concentrations to Assess N-Cycling in Constructed and Natural Coastal Wetlands |
| title_short | Use of N Natural Abundance and N Species Concentrations to Assess N-Cycling in Constructed and Natural Coastal Wetlands |
| title_sort | use of n natural abundance and n species concentrations to assess n cycling in constructed and natural coastal wetlands |
| url | http://dx.doi.org/10.1155/2010/371259 |
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