uid=BNZ,o=lter,dc=ecoinformatics,dc=org all public read knb-lter-bnz.120.10 Isla Myers-Smith

405 CW Biological Sciences Building, Dept. Biological Sciences University of Alberta, , AB, T6G 2E9 Edmonton Aberta T6G 2E9 Canada

(780) 492-1295 myerssmi@ualberta.ca http://www.ualberta.ca/~myerssmi/home.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 A. David McGuire Assistant Professor of Landscape Ecology

Alaska Cooperative Fish and Wildlife Research Unit University of Alaska Fairbanks Irving I Building Fairbanks AK 99775 United States

(907) 474-6242 (907) 474-7872 Associated investigator Jennifer W. Harden USGS, Adjunct Professor of Soil Science, University of Alaska Fairbanks

U.S. Geological Survey 345 Middlefield Road, MS 962 Menlo Park CA 94025 United States

(650) 329-4949 (650) 329-4920 Associated investigator F.S. Stuart Chapin Professor of Ecology

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) 474-7922 (907) 474-6967 Associated investigator 2005-11-24 This data set contains D and 18O data for a core from the center and moat (0 and 6 m) of the BBC collapse scar. Two well-preserved cores from the center of the bog was collected in March 2003 with a gasoline-powered permafrost corer. Cores were stored frozen and sampled using a radial saw. The core was sampled every two cm for macrofossil, diatom analysis and chemistry. Oxygen isotope ratios in aquatic cellulose has been shown to be a reliable tracer of lakewater isotope ratios (Sauer et al., 2001). I predicted that ?D and ?18O signatures in Sphagnum leaves would respond to enrichment and depletion in the bog water over time, providing an independent line of evidence for diatom-inferred hydrologic change. All isotope samples were processed by the Alaska Stable Isotope Facility using a Thermo Finnigan TC EA and Deltaplus XL mass spectrometer (Thermo Electron Corporation, Bremen, Germany) in continuous flow mode. Data were reported relative to standard mean ocean water (SMOW). Instrument precision was 1.2 ? SE for ?D and 0.3 ? SE for ?18O. I separated Sphagnum leaves from the bog and moat cores, and ran whole organic matter samples for ?D and ?18O stable isotopes. To determine the correlation between ?D and ?18O stable isotopes in peat leaves and bog water, I analyzed samples of Sphagnum and adjacent surface water. I collected surface water samples without headspace and refrigerated at 4 ?C until sample analysis. Snow samples were kept frozen until analysis. I refrigerated surface sample Sphagnum leaves from branches directly below the capitulum after harvest until analysis for ?D and ?18O stable isotopes. I identified Sphagnum samples to species. This data set was collected to relate ?D and ?18O to fires, changes in succession, changes in hydrology, and diatom assemblages. transect isotope chemistry oxygen bog moat deuterium sphagnum Biogeochemistry

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http://www.lter.uaf.edu/data_detail.cfm?datafile_pkey=120 Site information unavailable -148.3334833 -148.3334833 64.6408 64.6408 2003-05-01 2003-09-01

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

Field methods: This data set contains D and 18O data for a core from the center and moat (0 and 6 m) of the BBC collapse scar. Two well-preserved cores from the center of the bog was collected in March 2003 with a gasoline-powered permafrost corer. Cores were stored frozen and sampled using a radial saw. The core was sampled every two cm for macrofossil, diatom analysis and chemistry. Lab methods: All isotope samples were processed by the Alaska Stable Isotope Facility using a Thermo Finnigan TC EA and Deltaplus XL mass spectrometer (Thermo Electron Corporation, Bremen, Germany) in continuous flow mode. Data were reported relative to standard mean ocean water (SMOW). Instrument precision was 1.2 ? SE for ?D and 0.3 ? SE for ?18O. I separated Sphagnum leaves from the bog and moat cores, and ran whole organic matter samples for ?D and ?18O stable isotopes. To determine the correlation between ?D and ?18O stable isotopes in peat leaves and bog water, I analyzed samples of Sphagnum and adjacent surface water. I collected surface water samples without headspace and refrigerated at 4 ?C until sample analysis. Snow samples were kept frozen until analysis. I refrigerated surface sample Sphagnum leaves from branches directly below the capitulum after harvest until analysis for ?D and ?18O stable isotopes. I identified Sphagnum samples to species. Instrumentation used: Thermo Finnigan TC EA and Deltaplus XL mass spectrometer (Thermo Electron Corporation, Bremen, Germany) in continuous flow mode

geoReference 2003-05-01 2003-09-01

once

239_2069_samples_d_and_18o_isotope.txt This data set was collected to relate ?D and ?18O to fires, changes in succession, changes in hydrology, and diatom assemblages. 239_2069_samples_d_and_18o_isotope.txt 1 \n \n column \t http://metacat.lternet.edu/das/dataAccessServlet?docid=knb-lter-bnz..&urlTail=/ascii/files/239_2069_samples_d_and_18o_isotope.txt Year Year Year (yyyy) of measurement integer yyyy DOY DOY Day of year of measurement integer DOY Distance (m) Distance (m) Distance along the transect (0-30m) Integer Distance along the transect (0-30m) Side of Transect Side of Transect Side of the transect (East or West) string E East side of transect W West side of transect Depth (cm) Depth (cm) Depth of sample in the soil profile (in cm) Integer centimeter real Sample Name Sample Name Sample name used string Sample name used Sample ID Sample ID Sample identification (Distance along the transect (0-30m)_Side of the transect (East or West)_sample type) string Sample identification (Distance along the transect (0-30m)_Side of the transect (East or West)_sample type) Sample Type Sample Type The substrate run for stable isotopes (water, snow or peat moss (Sphagnum)) string Water Water Snow Snow Peat Peat Mean Deuterium (‰) Mean Deuterium (‰) Mean deuterium (D or 2H reported per mil) float ‰ real Standard Error D (‰) Standard Error D (‰) Standard error of deuterium (D or 2H reported per mil) float ‰ real Mean Oxygen 18 (‰) Mean Oxygen 18 (‰) Mean oxygen 18 (18O reported per mil) float ‰ real Standard Error 18O (‰) Standard Error 18O (‰) Standard error of oxygen 18 (18O reported per mil) float ‰ real Moss Type 1 Moss Type 1 Primary moss type of peat sample run for isotopes (one of 7 species) Integer Primary moss type of peat sample run for isotopes (one of 7 species) Moss Type 2 Moss Type 2 Secondary moss type of peat sample run for isotopes (one of 7 species) Integer Secondary moss type of peat sample run for isotopes (one of 7 species) Moss Type 3 Moss Type 3 Tertiary moss type of peat sample run for isotopes (one of 7 species) Integer Tertiary moss type of peat sample run for isotopes (one of 7 species)