uid=BNZ,o=lter,dc=ecoinformatics,dc=org all public read knb-lter-bnz.25.10 Larry D. Hinzman

Water and Environmental Research Center University of Alaska Fairbanks P.O. Box 755860 Fairbanks AK 99775-5860 United States

(907) 474-7331 (907) 474-7979 http://www.uaf.edu/water/faculty/hinzman/hinzman.html Bonanza Creek LTER Data Manager

Boreal Ecology Cooperative Research Unit University of Alaska Fairbanks P.O. Box 756780 Fairbanks AK 99775 USA

907-474-6364 907-474-6251 jpdowning@alaska.edu http://www.lter.uaf.edu 1997-07-26 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. biogeochemistry permafrost hydrology dissolved organic carbon dissolved organic nitrogen dissolved inorganic nitrogen nitrate ammonium calcium magnesium potassium aluminum sodium manganese silica sulfate carbon and nitrogen flux Biogeochemistry

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http://www.lter.uaf.edu/data_detail.cfm?datafile_pkey=25 Site information unavailable -147.603928 -147.5713145 65.15876438 65.14329713 1985-07-14 1995-09-03

Completed

Bonanza Creek LTER Data Manager

Boreal Ecology Cooperative Research Unit University of Alaska Fairbanks P.O. Box 756780 Fairbanks AK 99775 USA

907-474-6364 907-474-6251 jpdowning@alaska.edu http://www.lter.uaf.edu Bonanza Creek LTER

Boreal Ecology Cooperative Research Unit University of Alaska Fairbanks P.O. Box 756780 Fairbanks AK 99775 USA

907-474-6364 907-474-6251 Bonanza Creek LTER

Using two watersheds in CPCRW as a case study, we compared soil water, groundwater and stream water chemistry between a watershed with limited permafrost (C2, low permafrost) and a watershed with extensive permafrost (C3, high permafrost).

Stream water samples were collected biweekly at the flumes in C2 and C3 from before snow-melt (early April) to until the streams froze (early October). Additional stream samples were collected every two days during snowmelt or rainstorm recessions. Three grab samples of 500 ml were collected from each stream at each sampling in acid washed polyethylene bottles. Soil water and groundwater samples were collected from several sites throughout C2 and C3 between 7 July and 17 September 1997. Soil water samples were obtained using PVC suction lysimeters with ceramic cups (model 1900, Soil Moisture Inc. Santa Barbara) installed to 0.3 - 0.5 m depth. Replicate suction lysimeter sites were located on warm aspects (n = 4), cold aspects (n = 4) and valley bottoms (n = 8) in each of C2 and C3 in August 1994 and June 1995. Lysimeters were primed with 50-85 cbars of pressure 24 hours prior to sampling. Replication of sites in the valley bottoms was greater because we anticipated higher variability of soil water chemistry in this area. Spring water was obtained from suction lysimeters installed immediately uphill from seeps. Suction lysimeters were used instead of standpipes to sample below the water table in valley bottoms and springs because the ceramic caps effectively excluded fine silt from water samples. Three well holes were drilled in each of LoP and HiP as deep as possible with a portable gas powered drill. Wells were positioned at least 10 m from the stream bed.

geoReference 1985-07-14 1995-09-03

Biweekly for streams increasing to every second day after snowmelt or rainstorms. Every 4 -7 days for soil water, spring water and groundwater.

25_main.txt -99 = missing data Variable, Description, Units Basin, Watershed, C2 or C3 SiteID, Location of sample Date, mm/dd/yy O+A, Depth of organic + A horizons, cm Horizon, Soil Horizon, see below SiteType, Veg type or water source of sample loc, see below all minerals (mg/L) conductivity (µS/cm) DOC Dissolved Organic Carbon DON Dissolved Organic Nitrogen bdl = below detection limits 0=below detection limits Horizon Description a A Horizon b B Horizon c C Horizon s Silt - undifferentiated r Rock SiteType Description< decid Mixed deciduous forest, with some white spruce valley Valley bottom shrub tundra spruce Black spruce spring Spring sample well Well sample stream Stream sample 25_main.txt 1 \n \n column \t http://metacat.lternet.edu/das/dataAccessServlet?docid=knb-lter-bnz..&urlTail=/ascii/files/25_main.txt Basin Basin Watershed, C2 or C3 string Watershed, C2 or C3 SiteID SiteID Location of sample string Location of sample Date Date The date of the observation string mm/dd/yy O+A O+A Depth of organic + A horizons, integer centimeter real Horizon Horizon A alphbetic code for determinint soil horizon string a A Horizon b B Horizon c C Horizon s silt r Rock SiteType SiteType A classification of above ground site descriptions string decid Mixed deciduous forest decid Mixed deciduous forest valley Valley bottom shrub tundra spruce Black spruce spring Spring sample well Well sample stream Stream sample SO4 SO4 micrograms per liter of in a sample float microgramsPerLiter real Mg Mg micrograms per liter of Magnesium in a sample float microgramsPerLiter real Ca Ca micrograms per liter of Calcium in a sample float microgramsPerLiter real K K micrograms per liter of Potassium in a sample float microgramsPerLiter real Mn Mn micrograms per liter of Manganese in a sample float microgramsPerLiter real Al Al micrograms per liter of Aluminum in a sample float microgramsPerLiter real Si Si micrograms per liter of Silicon in a sample float microgramsPerLiter real NO3-N NO3-N micrograms per liter of in a sample float microgramsPerLiter real NH4-N NH4-N micrograms per liter of in a sample float microgramsPerLiter real Cond Cond Conductivity float uS/cm real DOC DOC Dissolved Organic Carbon float microgramsPerLiter real DON DON Dissolved Organic Nitrogen float microgramsPerLiter real