uid=BNZ,o=EDI,dc=edirepository,dc=org all public read knb-lter-bnz.152.24 Jeremy Boyd Jones Co-Principal Investigator

Institute of Arctic Biology; Department of Biology and Wildlife; University of Alaska Fairbanks Fairbanks AK 99775 Unites States

(907) 474-7972 (907) 474-6967 Jay.Jones@alaska.edu http://www.iab.uaf.edu/people/jay_jones/ F Stuart Chapin Principal Investigator (retired)

Institute of Arctic Biology: University of Alaska Fairbanks Fairbanks AK 99775 United States

(907) 455-6408 (907) 474-6967 terry.chapin@alaska.edu https://sites.google.com/alaska.edu/f-stuart-chapin-iii-terry/ Roger Ruess Principal Investigator (retired)

Institute of Arctic Biology University of Alaska Fairbanks P.O. Box 757000 Fairbanks AK 99775-0180 United States

(907) 474-7153 (907) 474-6967 rwruess@alaska.edu http://people.iab.uaf.edu/roger_ruess 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 uaf-bnz-im-team@alaska.edu http://www.lter.uaf.edu 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 uaf-bnz-im-team@alaska.edu http://www.lter.uaf.edu Jeremy Boyd Jones Assistant Professor of Biology

Institute of Arctic Biology; Department of Biology and Wildlife; University of Alaska Fairbanks Fairbanks AK 99775 Unites States

(907) 474-7972 (907) 474-6967 Associated party 2025-09-25 The hydrogeochemistry of nine streams in the Caribou-Poker Creeks Research Watershed (CPCRW) during the summers of 2002-2006. In summer 2005, Boston Creek, which is located ca. 20 km east of the CPCRW was sampled. The Boston Creek watershed was extensively burned during the Boundary Fire of 2004. Samples were analyzed for Ca, Mg, Na, K, NH4+, Si, Cl, NO3, SO4, DOC, TDN, DIC, SUVA, pH and conductivity. hydrogeochemistry anions cations calcium chloride potassium magnesium sodium nitrate ammonium dissolved organic carbon dissolved organic nitrogen silica sulfate caribou poker creeks research watershed (CPCRW) streams chemistry water hydrology biogeochemistry carbon nitrogen Water Quality

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http://www.lter.uaf.edu/data/data-detail/id/152 Dataset geographic description information is unavailable. {datafile/geoCoverage is empty} -147.603928 -147.12 65.23 65.14329713 2001-01-07 2024-08-22

Ongoing

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 uaf-bnz-im-team@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 Bonanza Creek LTER

Stream chemistry is monitored in headwater and higher order streams that drain watersheds with varying permafrost extents to examine the coupling between permafrost thaw, watershed hydrology, and stream exports. Headwater streams drain watersheds with permafrost extents ranging from 4 - 54 %.

FIELD: The chemistry of streams was sampled at intervals from daily to bi-weekly and analyzed for major ions and other solutes. Daily samples were collected with autosamplers. Each daily sample collected by autosamplers was a composite of samples collected at 6 pm and 6 am the following day. LAB: Anions (Cl, NO3, SO4) and cations (Ca, Mg, Na, K, NH4+) were analyzed by ion chromotrography. DOC and TDN were measured using a Shimadzu TOC-5000 plumbed to an Antek 7050 nitric oxide detector to quantify total dissolved nitrogen. DIC was measured as inorganic carbon using a Shimdzu TOC-5000. SUVA was measured by the absorbance at 254 nm and was standarized to the DOC concentration.

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.. Site alternate names: C-2, C2-1100, C2 Flume -147.603928 -147.603928 65.15876438 65.15876438 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.. Site alternate names: C-3 -147.5713145 -147.5713145 65.14329713 65.14329713 CB -- This site is on the Caribou Creek main stem above the confluence with C3, so it is the combination of the C1 and C2 basins. This is an interesting site: it has the only well developed canopy of riparian trees in CPCRW, and it is always the first to thaw in the spring and the last to freeze in the fall.. Site alternate names: -147.56 -147.56 65.15 65.15 C4 stream -- The tributary basins of Caribou Creek are all arbitrarily designated with a "C". The C4 basin is the largest of the Caribou Creek tributaries, and enters Caribou Creek about 400 m above its confluence with Poker Creek. The flume in C4 is about 1 km upstream from the confluence of Little Poker Creek and Caribou Creek. There is an intermittent tributary called Dry Gulch that drains the Caribou Peak area, and which has a small Parshall flume on it. The basin has a tributary known as Dry Gulch that drains the Caribou Peak area, and is intermittent in its lower reaches but may be permanent on the steeper upstream slopes.. Site alternate names: C-4, C4 CTRL, Little Poker Creek, C4 -147.4986663 -147.4986663 65.16304593 65.16304593 P6 -- Basin in Caribou-Poker Creeks Research Watershed. Site alternate names: -147.388939 -147.388939 65.184791 65.184791 PJ -- This site encompasses the Poker Creek basin above the confluence with Caribou Creek. There is a pressure transducer measuring stream stage, and a string of thermistors measuring water temperature at 0, 10, 20, and 50 cm deep in the stream sediments.. Site alternate names: P-J, Poker Creek, Poker Main -147.4841681 -147.4841681 65.15154566 65.15154566 CJ -- The CJ site is in Caribou Creek immediately above (about 30 m) the confluence of Caribou and Poker Creeks. There is a pressure transducer measuring stream stage and a thermistor string measuring water temperatures at depths of 0, 10, 20, and 50 cm in the streambed sediments.. Site alternate names: C-J, Caribou Main, CM, Caribou Creek -147.4856181 -147.4856181 65.15147902 65.15147902 PC -- . Site alternate names: -147.482385 -147.482385 65.1510123 65.1510123 C1 -- The C1 basin is the western-most headwater tributary of Caribou Creek.. Site alternate names: C-1 -147.647846 -147.647846 65.154086 65.154086 Boston Creek -- Stream water sampling location.. Site alternate names: -147.12 -147.12 65.23 65.23 2001-01-07 2024-08-22

daily to b-weekly

Keith Van Cleve Bonanza Creek LTER Lead Principal Investigator Principal Investigator F.S. Stuart Chapin Bonanza Creek LTER Lead Principal Investigator

Department of Biology and Wildlife; Institute of Arctic Biology: University of Alaska Fairbanks 193 Arctic Health P.O. Box 757000 Fairbanks AK 99775 United States

(907) 455-6408 (907) 474-6967 terry.chapin@alaska.edu http://terrychapin.org/ Principal Investigator Roger W. Ruess Bonanza Creek LTER Lead Principal Investigator

Institute of Arctic Biology University of Alaska Fairbanks P.O. Box 757000 Fairbanks AK 99775-0180 United States

(907) 474-7153 (907) 474-6967 rwruess@alaska.edu http://www.iab.uaf.edu/~roger_ruess/ Principal Investigator Michelle Cailin Mack Bonanza Creek LTER Lead Principal Investigator

Northern Arizona University: Ecosystem Science and Society Center (ECOSS) PO Box 5620 Flagstaff AZ 86011 United States

(928) 523-9415 Michelle.Mack@nau.edu https://macklab.nau.edu/ Principal Investigator NSF Grant numbers DEB-2224776, DEB-1636476, DEB-1026415, DEB-0620579, DEB-0423442, DEB-0080609, DEB-9810217, DEB-9211769, DEB-8702629 USDA Forest Service, Pacific Northwest Research Station (Agreement # RJVA-PNW-20-JV-11261932-018) 152_CPCRW_Chemistry_2001_2024.csv Stream chemistry data listed by sample site (watershed) and date. All solutes have units of micrometre. Temperature as deg C. Conductivity as microSiemens/cm. Samples were analyzed for Ca, Mg, Na, K, NH4+, Si, Cl, NO3, SO4, DOC, TDN, DIC, SUVA, pH and conductivity. 152_CPCRW_Chemistry_2001_2024.csv 1 \n \n column , " http://www.lter.uaf.edu/php/download_data.php?f=/ascii/files/152_CPCRW_Chemistry_2001_2024.csv Stream Stream Name of stream string Name of stream Date (MM/DD/YYYY) Date (MM/DD/YYYY) Date measurement was taken string MM/DD/YYYY Nitrate(uM) Nitrate(uM) Nitrate concentration float Nitrate concentration NA Missing Value Sulfate(uM) Sulfate(uM) Sulfate concentration float Sulfate concentration NA Missing Value Chloride(uM) Chloride(uM) Chloride concentration float Chloride concentration NA Missing Value Sodium(uM) Sodium(uM) Sodium concentration float Sodium concentration NA Missing Value Ammonium(uM) Ammonium(uM) Ammonium concentration float Ammonium concentration NA Missing Value Magnesium(uM) Magnesium(uM) Magnesium concentration float Magnesium concentration NA Missing Value Potassium(uM) Potassium(uM) Potassium concentration float Potassium concentration NA Missing Value Calcium(uM) Calcium(uM) Calcium concentration float Calcium concentration NA Missing Value DIC(uM) DIC(uM) Dissolved inorganic carbon concentration float Dissolved inorganic carbon concentration NA Missing Value DOC(uM) DOC(uM) Dissolved organic carbon concentration float Dissolved organic carbon concentration NA Missing Value TDN(uM) TDN(uM) Total dissolved nitrogen concentration float Total dissolved nitrogen concentration NA Missing Value Silica(uM) Silica(uM) Silica concentration float Silica concentration NA Missing Value Temperature(degC) Temperature(degC) Stream temperature (degC) float celsius real NA Missing Value Conductivity(uS/cm) Conductivity(uS/cm) Electrical conductance float uS/cm real NA Missing Value DON(uM) DON(uM) Dissolved organic nitrogen concentration float Dissolved organic nitrogen concentration NA Missing Value SUVA(L mg-1 m-1) SUVA(L mg-1 m-1) Specific ultraviolet absorption float Specific ultraviolet absorption NA Missing Value pH pH pH float pH NA Missing Value