| Title: |
In situ Denitrification Rates in the Riparian Zone of Caribou-Poker Creeks Research Watershed, Alaska, 2002 - 2004
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| Contacts: |
O'Donnell, Jonathan
Jones, Jeremy
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| Abstract: |
Prior to this investigation, denitrification had not been intensively measured in headwater catchments of interior Alaska. The primary purpose of this database was to estimate the importance of denitrification as a mechanism of nitrogen retention in the riparian zone of watersheds underlain by discontinuous permafrost.
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| Keywords: |
caribou poker creeks research watershed (CPCRW), denitrification, watersheds, |
| Categories: |
Biogeochemistry
Hydrology
Stream Ecology
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| Study Period: |
May 1, 2004 to Oct 28, 2004
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| Bounding Box: |
West longitude: -147.603928°
North latitude: 65.15876438°
East longitude: -147.5713145°
South latitude: 65.14329713°
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| Site References: |
C2 -- The tributary basins of Caribou Creek are all arbitrarily designated with a
"C". The C2 basin is the sub-basin with the least amount of permafrost of the CPCRW sub-basins. As such, it has been often been studied intensively in conjunction with C3, the sub-basin with the greatest amount of permafrost. The basin trends to the south, with well-drained slopes and permafrost-underlain treeless muskeg in valley bottom. Although an extensive fire history has not been done, there was probably a stand-replacing fire early in this century (ca. 1925), with some large white spruce stands that survived from the earlier vegetation.
C3 -- The tributary basins of Caribou Creek are all arbitrarily designated with a
"C". The C3 basin is the sub-basin with the most permafrost of the CPCRW sub-basins. As such, it has been often been studied intensively in conjunction with C2, the sub-basin with the least amount of permafrost. The basin trends to the northeast, with black spruce/feather moss slopes and permafrost-underlain treeless muskeg in valley bottom.
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| Data Columns: |
| Column |
Name |
Units |
Type |
| 1 |
Date |
dd/mm/yy |
Datetime |
| 2 |
Watershed |
none |
string |
| 3 |
Sample No |
none |
integer |
| 4 |
DN Rate Mass |
ng N20 gsoil-1 h-1 |
float |
| 5 |
DN Rate Area |
ng N20 m-2 h-1 |
float |
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| Data File(s): |
riparian_denitrification_CPCRW_2004.txt
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| Supplemental Files: |
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| Metadata Formats: |
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| Public Release: |
Jan 1, 2006
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| Publications: |
O'Donnell JA, and JB Jones. 2006. Nitrogen retention in the riparian zone of catchments underlain by discontinuous permafrost. Freshwater Biology 51:854-864.
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The Bonanza Creek LTER, including this website, is supported by the
National Science Foundation through awards
DEB-0620579,
DEB-0423442,
DEB-0080609,
DEB-9810217,
DEB-9211769,
DEB-8702629
and by the USDA Forest Service, Pacific Northwest Research Station through agreement number RJVA-PNW-01-JV-11261952-231.
Any opinions, findings, conclusions, or recommendations expressed in the
material are those of the author(s) and do not necessarily reflect
the views of the supporting agencies or the program as a whole.
© Bonanza Creek LTER, 2009.
Last modified 23-Nov-09
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