John J. Battles University of California, Berkeley

Environmental Science, Policy, and Management 137 Mulford Hall Berkeley CA 94720-3114 USA

jbattles@nature.berkeley.edu Thomas G. Siccama Yale School of Forestry and Environmental Studies

Sage Hall 205 Prospect Street New Haven CT 06512 USA

thomas.siccama@yale.edu Timothy J. Fahey Cornell University

12 Fernow Hall Ithaca NY 14853 USA

mth6@cornell.edu 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 Paul Schwarz associated researcher Suzanne Wapner associated researcher schwarz valley plot Hubbard Brook chemistry soil

The re-use of scientific data has the potential to greatly increase communication, collaboration and synthesis within and among disciplines, and thus is fostered, supported and encouraged. Permission to use this dataset is granted to the Data User free of charge subject to the following terms: 1) Acceptable use. Use of the dataset will be restricted to academic, research, government or other not-for-profit professional purposes. 2) Redistribution. The data and metadata are provided for use by the Data User. The Data User will not redistribute the original Data Set or metadata to others without the explicit permission of the Principal Investigator. 3) Citation. It is considered a matter of professional ethics to acknowledge the work of other scientists. Thus, the Data User will properly attribute the Data Set in any publications or in the metadata of any derived data products that were produced using the Data Set. Citation should take the following general form: Creator, Year of Data Publication, Title of Dataset, Publisher, Dataset identifier. Citation example: Holmes, R.T. 2012. Bird Abundances at Hubbard Brook (1969-2010) and on three replicate plots (1986-2000) in the White Mountain National Forest. Durham, NH. Hubbard Brook Data Archive [Database]. http://hubbardbrook.org/data/dataset.php?id=81 (23 July 2012) 4) Acknowledgment: The Data User should acknowledge any institutional support or specific funding awards referenced in the metadata accompanying this dataset in any publications where the Data Set contributed to its content. Acknowledgments should identify the supporting party, the party that received the support, and any identifying information such as grant numbers. Acknowledgment example: Data on [topic] were provided by [name of PI] on [date]. These data were gathered as part of the Hubbard Brook Ecosystem Study (HBES). The HBES is a collaborative effort at the Hubbard Brook Experimental Forest, which is operated and maintained by the USDA Forest Service, Northern Research Station, Newtown Square, PA. Significant funding for collection of these data was provided by [agency]-[grant number], [agency]-[grant number], etc. 5) Consultation and questions. Data users are strongly encouraged to consult with the Principal Investigator(s) who collected these data for further information. Also, when appropriate, Data Users should consider including the Principal Investigator as a collaborator and/or co-author in the use of these data. 6) Notification. The Data User will notify the Principal Investigator of any publication or derivative work based on the Data Set. The Data User will also provide the Principal Investigator and/or the administrator of the Hubbard Brook Ecosystem Study with a pdf or two reprints of any publication(s) resulting from use of the Data Set. 7) Disclaimer. While substantial efforts are made to ensure the accuracy of data and documentation contained in this Data Set, complete accuracy of data and metadata cannot be guaranteed. All data and metadata are made available "as is". The Data User holds all parties involved in the production or distribution of the Data Set harmless for damages resulting from its use or interpretation. 8) Terms of Agreement. By accepting this Data Set, the Data User agrees to abide by the terms of this agreement. The Data Owner shall have the right to terminate this agreement immediately by written notice upon the Data User's breach of, or non-compliance with, any of its terms. The Data User may be held responsible for any misuse that is caused or encouraged by the Data User's failure to abide by the terms of this agreement.

http://www.hubbardbrook.org/data/dataset.php?id=123 The 260 plots in this dataset are a subset of 431 plots that are located across the entire Hubbard Brook Valley. Fifteen N–S transects were established at 500-m intervals to span the entire Hubbard Brook Valley. Along the transects, a regular array of 431 500-m2 circular plots was established at distance intervals of either 25 m, 100 m, or 200 m. The subset includes all plots from every other transect. UTM coordinates of all plots are included in this dataset. A map of the plot locations can be found in: Schwarz, Paul A., Timothy J. Fahey, and Charles E. McCulloch 2003. Factors controlling spatial variation of tree species abundance in a forested landscape. Ecology, 84(7) p1863. -71.743462 -71.735649 43.957001 43.949928 1997-07-07 1998-08-17 John J. Battles University of California, Berkeley

Environmental Science, Policy, and Management 137 Mulford Hall Berkeley CA 94720-3114 USA

jbattles@nature.berkeley.edu U.S Forest Service

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

603-868-7643 603-868-7604 http://www.hubbardbrook.org Hubbard Brook LTER

This dataset contains soil pH, moisture, texture, and cation exchange for soil samples collected from 260 plots of the total 431 plots that Paul Schwarz and others established between 1995 and 1998. The dataset also contains soil chemistry (element analysis) for 200 plots in the subset. Data collected on these plots led to the following two publications (1,2) and a doctoral thesis (3). Other soils data (soil depth and mineral soil depth) and tree data (species, condition, and for some tree ring increment measures and tree height) were also taken on these plots and are posted seperately on this website.

Paul Schwarz and others collected this data on a subset of the 431 plots that are located across the entire Hubbard Brook Valley. The following methods for establishment of the 431 plots, the selection process for the subset of 260 plots, and the soil sample collection are excerpted from Schwarz et al 2003, page 1864 (see below for reference): "Fifteen N–S transects were established at 500-m intervals to span the entire Hubbard Brook Valley (Fig.1). Along the transects, a regular array of 431 500-m2 circular plots was established at distance intervals of either 25 m, 100 m, or 200 m. The sampling layout and spacing of the plots was designed to facilitate the analysis of spatial patterns in the forest vegetation by utilizing a wide range of distance intervals between plots (Fortin et al. 1989)."..."We collected soil samples from a subset of 260 plots that consisted of all the plots from every other transect (Fig. 1). Twelve soil cores (2 cm diameter) were collected at randomly chosen locations within each plot. The forest floor material was separated from the mineral soil, and 15cm of mineral soil was retained from each core. In the laboratory, the samples from each plot were air dried, sieved to separate the gravel fraction (2.0 mm diameter), and then composited. The single composite sample from each plot was used for all subsequent analyses. Mineral soil pH was measured using a 2:1 water:soil suspension. Exchangeable cation concentrations (Table 1) were measured using ammonium chloride and mechanical vacuum extraction (Huntington et al. 1990). Previous studies indicated that soils in the HBEF have low clay contents (S. W. Bailey, personal communication). Therefore, we expected most of the variation in particle size in the sand and silt fractions. We measured particle size distribution by adapting the methods of Gee and Bauder (1982). We first dispersed a 50-g subsample of mineral soil with an aqueous solution of Calgon detergent, then wet sieved the suspension through a 0.053-mm mesh sieve to remove silt and clay particles, and finally dry sieved to separate sand particles into five size classes. " UTM coordinates of all plots are included in this dataset. A map of the plot locations can be found in Schwarz et al 2003 (Fig.1). Specific coring locations (bearing and distance from plot center) within each plot are posted on this website.

P.A. Schwarz T.J. Fahey C.E. McCulloch 2003 english

Ecology 84(7) 1862-1878

P.A. Schwarz T.J. Fahey C.W. Martin T.G. Siccama A.S. Bailey 2001

Forest Ecology and Management 144 201-212

P.A. Schwarz PhD Disseration Cornell University 145 M.-J. Fortin P. Drapeau P. Legendre 1989

Vegetation 83 209–222

T. G. Huntington A.H. Johnson T.N. Schwartzman 1990

Soil Science Society of America Journal 54 381–385

G. W. Gee J. W. Bauder American Society of Agronomy– Soil Science Society of America A. L. Page R. H. Miller D. R. Keeney Methods of soil analysis. Part I: physical and mineralogical methods 383–411 uid=HBR,o=lter,dc=ecoinformatics,dc=org all public read valley_soil_chem Soil Chemistry for the Hubbard Brook Valley Plots valley_soil_chem ASCII 1 \n\r column 0x20 http://www.hubbardbrook.org/data/dataset.php?id=123 PLOT Plot ID number Plot where samples was collected UTM_EASTING UTM Easting of plot location meter whole UTM_NORTHING UTM Northing of plot location meter whole PH pH pH real MOISTURE_% Soil moisture content percent real OM_% Soil organic matter fraction percent real Cd Cadmium concentration in soil milliGramsPerKilogram real -9999.999 Not measured Cu Copper concentration in soil milliGramsPerKilogram real -9999.999 Not measured Ni Nickel concentration in soil milliGramsPerKilogram real -9999.999 Not measured Cr Chromium concentration in soil milliGramsPerKilogram real -9999.999 Not measured Co Cobalt concentration in soil milliGramsPerKilogram real -9999.999 Not measured Zn Zinc concentration in soil milliGramsPerKilogram real -9999.999 Not measured Mn Manganese concentration in soil milliGramsPerKilogram real -9999.999 Not measured Ca_% Calcium fraction in soil percent real -9999.999 Not measured Ca Calcium concentration in soil milliGramsPerKilogram real -9999 Not measured Mg_% Magnesium fraction in soil percent real -9999.999 Not measured Mg Magnesium concentration in soil milliGramsPerKilogram real -9999 Not measured Al_% Aluminum fraction in soil percent real -9999.999 Not measured Al Aluminum concentration in soil milliGramsPerKilogram real -9999 Not measured Fe_% Iron fraction in soil percent real -9999.999 Not measured Fe Iron concentration in soil milliGramsPerKilogram real -9999 Not measured P Phosphorus concentration in soil milliGramsPerKilogram real -9999.999 Not measured S Sulfur concentration in soil milliGramsPerKilogram real -9999.999 Not measured B Boron concentration in soil milliGramsPerKilogram real -9999.999 Not measured Ti_% Titanium fraction in soil percent real -9999.999 Not measured Ti Titanium concentration in soil milliGramsPerKilogram real -9999 Not measured K_% Potassium fraction in soil percent real -9999.999 Not measured K Potassium concentration in soil milliGramsPerKilogram real -9999 Not measured Na_% Sodium fraction in soil percent real -9999.999 Not measured Na Sodium concentration in soil milliGramsPerKilogram real -9999 Not measured EXCH_Al Exchangeable aluminum in soil percent real -9.9999999999 Not measured EXCH_As Exchangeable arsenic in soil percent real -9.9999999999 Not measured EXCH_B Exchangeable boron in soil percent real -9.9999999999 Not measured EXCH_Ca Exchangeable calcium in soil percent real -9.9999999999 Not measured EXCH_Cd Exchangeable cadmium in soil percent real -9.9999999999 Not measured EXCH_Co Exchangeable cobolt in soil percent real -9.9999999999 Not measured EXCH_Cr Exchangeable chromium in soil percent real -9.9999999999 Not measured EXCH_Cu Exchangeable copper in soil percent real -9.9999999999 Not measured EXCH_Fe Exchangeable iron in soil percent real -9.9999999999 Not measured EXCH_K Exchangeable potassium in soil percent real -9.9999999999 Not measured EXCH_Mg Exchangeable magnesium in soil percent real -9.9999999999 Not measured EXCH_Mn Exchangeable manganese in soil percent real -9.9999999999 Not measured EXCH_Mo Exchangeable molybenum in soil percent real -9.9999999999 Not measured EXCH_Ni Exchangeable nickel in soil percent real -9.9999999999 Not measured EXCH_P Exchangeable phosphorus in soil percent real -9.9999999999 Not measured EXCH_Pb Exchangeable lead in soil percent real -9.9999999999 Not measured EXCH_Se Exchangeable selenium in soil percent real -9.9999999999 Not measured EXCH_Sr Exchangeable strontium in soil percent real -9.9999999999 Not measured EXCH_V Exchangeable vanadium in soil percent real -9.9999999999 Not measured EXCH_Zn Exchangeable zinc in soil percent real -9.9999999999 Not measured EXCH_BC Sum of base cations in soil milliEquivalentsPerGram real -9.9999999999 Not measured GRAVEL Soil gravel fraction percent real SANDSILTCLAY Soil Sand Silt Clay fraction percent real VERYCOARSESAND Soil Very Coarse Sand fraction percent real COARSESAND Soil Coarse Sand fraction percent real MEDIUMSAND Soil Medium Sand fraction percent real FINESAND Soil Fine Sand fraction percent real VERYFINESAND Soil Very Find Sand fraction percent real SILTCLAY Soil Silt Clay fraction percent real Date Sample date Years during which sample was collected percent (%) milliGramsPerKilogram (mg/kg) milliEquivalentsPerGram (meq/g) pH