| Title: |
Biogeochemistry of Permafrosted/NonPermafrosted Watersheds in CPCRW: Summer 1995
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| Contacts: |
Hinzman, Larry
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| Abstract: |
Chemical measurements of groundwater, soil water and stream water were made in watersheds C2 and C3 in CPCRW (DOC, DON, NO3-N, NH4-N, Al, Mg, Ca, Mn, Si, K, Na, SO4 and conductivity). One watershed C3 had extensive permafrost and the other C2 had limited permafrost. Stream discharge data was collected from permanently installed flumes. Soil water retained within the rooting zone (0.3 - 0.5 m) was high in DOC, DON and DIN but low in dissolved minerals (dominantly Ca, Mg and Na) and conductivity. The reverse was true for groundwater from springs and wells. Permafrost in C3 prevented deep percolation of water and generated stormflows rich in DOC. Stormflow accounted for 24% of total streamflow in C3 but only 3% of total streamflow in C2. The presence of permafrost appears to result in higher fluxes of DOC, DON and DIN into stream water from upland soils.
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| Keywords: |
aluminum, ammonium, biogeochemistry, calcium, carbon and nitrogen flux, dissolved inorganic nitrogen, dissolved organic carbon, dissolved organic nitrogen, hydrology, magnesium, manganese, nitrate, permafrost, potassium, silica, sodium, sulfate, |
| Categories: |
Biogeochemistry
Hydrology
Stream Ecology
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| Study Period: |
Jul 14, 1985 to Sep 3, 1995
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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 |
Basin |
|
|
| 2 |
SiteID |
|
|
| 3 |
Date |
mm/dd/yy |
Datetime |
| 4 |
O+A |
centimeter |
integer |
| 5 |
Horizon |
|
string |
| 6 |
SiteType |
|
string |
| 7 |
SO4 |
microgramsPerLiter |
float |
| 8 |
Mg |
microgramsPerLiter |
float |
| 9 |
Ca |
microgramsPerLiter |
float |
| 10 |
K |
microgramsPerLiter |
float |
| 11 |
Mn |
microgramsPerLiter |
float |
| 12 |
Al |
microgramsPerLiter |
float |
| 13 |
Si |
microgramsPerLiter |
float |
| 14 |
NO3-N |
microgramsPerLiter |
float |
| 15 |
NH4-N |
microgramsPerLiter |
float |
| 16 |
Cond |
µS/cm |
float |
| 17 |
DOC |
microgramsPerLiter |
float |
| 18 |
DON |
microgramsPerLiter |
float |
|
| Data File(s): |
25_main.txt
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| Supplemental Files: |
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| Metadata Formats: |
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| Public Release: |
Jul 26, 1997
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| Publications: |
Kasischke,Eric S., Bourgeau-Chavez, Laura L., and Johnstone, Jill F. 2007. Assessing spatial and temporal variations in surface soil moisture in fire-disturbed black spruce forests in Interior Alaska using spaceborne synthetic aperture radar imagery - Implications for post-fire tree recruitment. Remote Sensing of Environment; May2007, Vol. 108 Issue 1, p42-58
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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.
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Last modified 22-Nov-09
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