Gene E. Likens Institute of Ecosystem Studies Hubbard Brook Experimental Forest LTER

U.S. Forest Service 271 Mast Rd. Durham NH 03824 USA

603-868-7643 603-868-7604 http://www.hubbardbrook.org precipitation watershed rain chemistry pH calcium magnesium potassium sodium aluminum ammonium sulfate nitrate chloride phosphate silicate

Data Access Guidelines for Streamwater Chemistry We are happy to share these data on the chemistry of Hubbard Brook ecosystems. The public dissemination of these data that we have collected is a responsibility that we take very seriously. As stewards of these long-term data, our highest priorities are: a. to maintain the integrity of these long-term data; b. to allow adequate time for the analysis, quality assurance, and publication of results by principal investigators; c. to acknowledge properly and responsibly the appropriate funding sources. Therefore, it is HBES policy to make these streamwater data available on this web page five years after the date of collection. Also, in sharing these data with users like yourself, we ask that you adhere to the following guidelines as a matter of common courtesy and ethical responsibility: 1. Please inform us in advance of your interest and plans for use of these data (LikensG@ecostudies.org). 2. The sources of funding used to collect these data must be acknowledged properly. We will provide the appropriate information when we learn what data are being used. 3. We would like to review any manuscripts that utilize extensive amounts (e.g. multiple years) of these data. If data use is extensive, or if these data have not been published previously, it may be appropriate for us to be included as authors on publication that are generated given the additional requirements from us for analysis and interpretation.

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http://hubbardbrook.org/research/data/atmos/pcp_chem/w9-pcp.htm HBEF watershed 9 (WS-9). Primary bulk collector located at HBEF RG-19 (elev. 600m above MSL) 20m west of WS-8 stream gauging station. Data from this site are used to provide chemical inputs for HBEF watersheds 7, 8, and 9, based on precipitation volumes in each of those watersheds. Coordinates given correspond to watershed 9. -71.758507 -71.687683 43.948246 43.915962 Month Year June 1995 Ongoing Ongoing Gene Likens Institute of Ecosystem Studies

Millbrook NY 12545 USA

(845)-677-5343 LikensG@ecostudies.org

Continuously-open, bulk collectors (clean plastic funnels-bottles in summer; 21-liter plastic buckets in winter) mounted on posts ~2 m above land surface within cleared openings in the forest. Samples are collected weekly, and all collection gear is acid-washed, de-ionized water-rinsed, and exchanged each week, regardless of whether precipitation occurs or not. pHs are determined at HBEF; ion analyses conducted at the Institute of Ecosystem Studies in Millbrook, NY. Daily deposition values (in g/ha-mo) are derived by multiplying daily precipitation amounts (in mm) for Watershed 9, by the average weekly concentration of solutes from the bulk collectors (in mg/L) for the same period. Daily values are summed to produce monthly deposition, and deposition divided by total monthly precipitation to produce volume-weighted, average monthly concentrations for precipitation at HBEF WS-9.

G.E. Likens D.C. Buso J.W. Hornbeck 2001 english Melbourne, Australia likens F.H. Bormann R.S. Pierce J.S. Eaton N.M. Johnson 1977 Springer-Verlag New York Inc. 146 pp. C.A. Federer L.D. Flynn C.W. Martin hornbeck pierce 1990 General Technical Report NE-141 USDA Forest Service 44 pp. buso likens eaton 2000 U.S. Department of Agriculture, Forest Service, Northeastern Research Station Gen. Tech. Rep. NE-275 Newtown Square, PA 52 pp. uid=HBR,o=lter,dc=ecoinformatics,dc=org all public read w9-pcp Precipitation chemistry data of watershed 9 at Hubbard Brook lter w9-pcp.txt ASCII 1 \n\r column , http://www.hubbardbrook.org/data/data_policy.php?firstname=metacat&lastname=user&affiliation=Other&view=1&accept=1&comments=none&phone=6035551212&email=none@loopback.com&target=w9-pcp.txt

Volume-weighted, average, monthly concentration from bulk precipitation collector. Data are used to calculate deposition for HBEF Watershed 9.

These data are physically stored at the Institute of Ecosystem Studies, Robert S. Pierce Ecosytem Laboratory, Hubbard Brook Experimental Forest, W.Thornton, NH.

ws watershed (9) 9 the number of the watershed (is 9 throughout this dataset) year year YYYY 1 mo month MM 1 1 12 precip total precipitation in mm/month (over any unit of area) millimetersPerMonth .001 real -3.000 Data missing or not taken Ca calcium concentration in mg/L milligramsPerLiter .001 real -3.000 Data missing or not taken Mg magnesium concentration in mg/L milligramsPerLiter .001 real -3.000 Data missing or not taken K potassium concentration in mg/L milligramsPerLiter .001 real -3.000 Data missing or not taken Na sodium concentration in mg/L milligramsPerLiter .001 real -3.000 Data missing or not taken Al total aluminum in mg/L milligramsPerLiter .001 real -3.000 Data missing or not taken NH4 ammonium concentration in mg/L milligramsPerLiter .001 real -3.000 Data missing or not taken pH pH dimensionless .01 real -3.00 Data missing or not taken SO4 sulfate concentration in mg/L milligramsPerLiter .001 real -3.000 Data missing or not taken NO3 nitrate concentration in mg/L milligramsPerLiter .001 real -3.000 Data missing or not taken Cl chloride concentration in mg/L milligramsPerLiter .001 real -3.000 Data missing or not taken PO4 phosphate concentration in mg/L (soluble-reactive phosphate) milligramsPerLiter .0001 real -3.0000 Data missing or not taken SiO2 silicate concentration in mg/L milligramsPerLiter .001 real -3.000 Data missing or not taken A measure of precipitation amount