Thomas G. Siccama Yale School of Forestry and Environmental Studies

New Haven CT 06511 USA

Wayne Martin Forest Service, Hubbard Brook Experimental Forest

Campton NH

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 Chris Johnson Department of Civil and Environmental Engineering, Syracuse University

Syracuse NY 13244 USA

associated researcher Steve Hamburg Center for Environmental Studies, Urban Ecology Laboratory, Brown University

Providence RI 02912 USA

associated researcher Tim Fahey Department of Natural Resources, Cornell University

Ithaca NY 14853 USA

associated researcher Charley Driscoll Department of Civil and Environmental Engineering, Syracuse University

Syracuse NY 13244 USA

associated researcher Gene Likens Institute of Ecosystem Studies

Millbrook NY 12545 USA

associated researcher Ian Halm Forest Service, Hubbard Brook Experimental Forest

Campton NH

Publications using these data from the Hubbard Brook Ecosystem Study must include the following paragraph: Some data used in this publication were obtained by scientists of the Hubbard Brook Ecosystem Study; this publication has not been reviewed by those scientists. The Hubbard Brook Experimental Forest is operated and maintained by the Northeastern Research Station, U.S. Department of Agriculture, Newtown Square, Pennsylvania. Please note that data sharing and availability policy varies among the datasets available. Publishers of Hubbard Brook data are encouraged to contact the original data provider to obtain information for an acknowledgement of the original funding source of the research.

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Data SetDigital data and its metadata derived from any research activity such as field observations, collections, laboratory analysis, experiments, or the post-processing of existing data and identified by a unique identifier issued by a recognized cataloging authority such as a site, university, agency, or other organization. Data Userndividual to whom access has been granted to this Data Set, including his or her immediate collaboration sphere, defined here as the institutions, partners, students and staff with whom the Data User collaborates, and with whom access must be granted, in order to fulfill the Data User's intended use of the Data Set Data Set Creatorindividual or institution that produced the Data Set Data Set Ownerindividual or institution that holds intellectual property rights to the dataset. Note that this may or may not be defined as a legal copyright. If no other party is designated in the metadata as Data Set Owner, it may be presumed that these rights are held by the Data Set Creator. Data Set Distributorindividual or institution providing access to the Data Sets. Data Set Contactparty designated in the accompanying metadata of the Data Set as the primary contact for the Data Set.

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=w594veg.txt Watershed 5 is a 22.5-ha watershed extending from an elevation of 503-m at the weir to 755-m at the highest point on the ridge. -71.739853 -71.687683 43.957100 43.939945 503 755 meter Year 1982 Ongoing Ongoing Thomas G. Siccama Yale School of Forestry and Environmental Studies

205 Prospect St. New Haven CT 06511 USA

(203)-432-5140 thomas.siccama@yale.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

The watershed was surveyed in 1982 and clearcut in 1983. Post-cut tree surveys were initiated in 1990 and repeated in 1994 and 1999. These data were collected in the summer of 1994. The hydrology has been monitored since 1962. The stream water chemistry has been monitored since 1963. In 1982, before the clearcut, the watershed was forested by typical northern hardwood species (sugar maple, beech and yellow birch) on the lower 85 % of its area and by a montane boreal transition forest of red spruce, balsam fir and white birch on the highest 15%. Surveying techniques were used in 1982 to install a grid system of 360 grid units, each 25 x 25-m square. These grid units serve as the plot system. See the following webpages for more information: http://www.hubbardbrook.org/watersheds/maps/w5_veg_map.htm and http://www.hubbardbrook.org/watersheds/w5_grid_elevations.htm.

The inventory consists of all trees >=1.5-cm dbh on a 1 x 25 m plot within each of 38 of the 25 x 25 m grid units.

The data consist of the diameters (dbh) of all trees >=1.5-cm dbh, live and dead, on a 1 x 25 m plot within each of 38 25 x 25 m grid units. (1578 individual stems). Dead trees were recorded as standing dead trees (trees dead but retaining most of their fine branches) and as snags (trees broken off above dbh or with only their major large branches still intact). Live trees were noted "sick" if they had very sparse foliage or yellowing foliage in the mid summer sampling. All stems that met the size criteria were measured individually, and in some years it was noted whether a stem was part of a group of stems from the same tree (i.e. multiple stems that split from a single trunk below breast height). For W5, whether or not a stem was part of a group was recorded in all post-harvest survey years.

For extensive notes about the details of these surveys and subsequent calculations, see the notes indicated at the bottom of the interactive calculation programs.

G.E. Likens C.T. Driscoll D.C. Buso T.G. Siccama C.E. Johnson G.M. Lovett T.J. Fahey W.A. Reiners D.F. Ryan C.W. Martin S.W. Bailey 1998 english

Biogeochemistry 41 2 89-173

likens driscoll buso siccama johnson ryan lovett fahey reiners 1994

Biogeochemistry 25 61-125

johnson A.H. Johnson T.G. Huntington siccama 1991

Soil Sci. Soc. Am. J. 55 497-502

johnson johnson2 siccama 1991

Soil Sci. Soc. Am. J. 55 502-508

huntington ryan 1990

Forest Ecology and Management 31 193-204

huntington johnson johnson2 siccama ryan 1989

Soil Science 148 5 380-386

huntington ryan S.P. Hamburg 1988

Soil Sci. Soc. Am. J. 52 1162-1167

fahey M. Arthur J.W. Hughes Mou Pu 1986 IV Internat. Congress of Ecology, 71st Annual Meeting of the Ecological Society of America State University of New York Syracuse University NY hughes 1986 IV Internat. Congress of Ecology, 71st Annual Meeting of the Ecological Society of America State University of New York Syracuse University NY fahey 1985

Bull. Ecol. Soc. Amer. 66 2 171

hughes fahey 1985

Bull. Ecol. Soc. Amer. 66 2 198

Aboveground and belowground biomass was estimated for each stem in the inventory and is included in the data. Estimates were based on species-specific allometric equations developed at Hubbard Brook. See "How do we quantify a forest?" for details. Phytosociology or biomass summaries can be obtained by using our interactive calculators. Phytosociology summaries include basal area, density and frequency of each species for the watershed as a whole or for smaller units as chosen by the user. Diameter distributions for a specific species can also be selected. Biomass summaries include biomass estimates by plant part for each species for the watershed as a whole or for smaller units as chosen by the user. Options to estimate productivity and total nutrient pools in the vegetation are also available. For extensive details about how these calculations are made, see the notes indicated at the bottom of the calculator pages.

uid=HBR,o=lter,dc=ecoinformatics,dc=org all public read Quantifying the forest stop-7.htm HTML http://www.hubbardbrook.org/w6_tour/biomass-stop/stop-7.htm Webpage W5 biomass calculator (pre-cut) biomassw5-pre.htm HTML + Perl Script http://www.hubbardbrook.org/w6_tour/biomass-stop/biomassw5-pre.htm Webpage W5 phytosociology calculator (pre-cut) phytow5-pre.htm HTML + Perl Script http://www.hubbardbrook.org/w6_tour/biomass-stop/phytow5-pre.htm Webpage W5 phytosociology calculator (post-cut) phytow5-post.htm HTML + Perl Script http://www.hubbardbrook.org/w6_tour/biomass-stop/phytow5-post.htm Webpage W5 whole-tree harvest summary index.html HTML http://www.hubbardbrook.org/research/longterm/whole_tree/w5_overview/index.html Webpage w594veg Tree data for Watershed 5 1994 w594veg.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=w594veg.txt

Several papers have been published based on research of the effects of tree harvesting on Watershed 5. The data is physically located at the Yale School of Forestry and Environmental Studies. Original field notes are at the Forest Service Station at Hubbard Brook Experimental Forest, Campton NH. Data was last updated in March, 2004 by Ellen Denny.

Plot plot number An integer representing the plot Zn vegetation zone. These zones were defined pre-harvest and although the post-harvest regrowth does not necessarily reflect the same vegetation composition for each plot, we have kept the original zones for the sake of continuity. The first number reflects the number of total grid units on W5 in this zone; the second number in parentheses represents the number of the 38 grid units used in this survey that fall into this zone. 1 primarily spruce/fir forest on the ridge top - 73 plots (9 plots) 2 pocket of spruce/fir forest on east side of watershed- 15 plots (2 plots) 3 high elevation hardwoods - 33 plots (1 plot) 4 middle elevation hardwoods - 146 plots (16 plots) 5 lower elevation hardwoods - 93 plots (10 plots) Sp species acronym ACSA Sugar maple (Acer saccharum) FAGR American beech (Fagus grandifolia) BEAL Yellow birch (Betula alleghaniensis) FRAM White ash (Fraxinus americana) ACSP Mountain maple (Acer spicatum) ACPE Striped maple or moose wood (Acer pensylvanicum) PRPE Pin or fire cherry (Prunus pensylvanica) PRVI Choke cherry (Prunus virginiana) ABBA Balsam fir (Abies balsamea) PIRU Red spruce (Picea rubens) BEPA White or paper birch (Betula papyrifera) SOAM Mountain ash (Sorbus americana) ACRU Red maple (Acer rubrum) TSCA Eastern hemlock (Tsuga canadensis) UNKN unknown, used for unidentifiable rotten snags POTR Quaking aspen (Populus tremuloides) PRSE Black cherry (Prunus serotina) AMSP Shadbush (Amelanchier sp.) POGR Big-tooth aspen (Populus grandidentata) SASP Willow (Salix sp.) COAL Alternate-leaved dogwood (Cornus alternifolia) PRSP Cherry (unspecified) (Prunus sp.) Sp# species number 1 Sugar maple (Acer saccharum) 2 American beech (Fagus grandifolia) 3 Yellow birch (Betula alleghaniensis) 4 White ash (Fraxinus americana) 5 Mountain maple (Acer spicatum) 6 Striped maple or moose wood (Acer pensylvanicum) 7 Pin or fire cherry (Prunus pensylvanica) 8 Choke cherry (Prunus virginiana) 9 Balsam fir (Abies balsamea) 10 Red spruce (Picea rubens) 11 White or paper birch (Betula papyrifera) 12 Mountain ash (Sorbus americana) 13 Red maple (Acer rubrum) 14 Eastern hemlock (Tsuga canadensis) 15 unknown, used for unidentifiable rotten snags 16 Quaking aspen (Populus tremuloides) 17 Black cherry (Prunus serotina) 18 Shadbush (Amelanchier sp.) 19 Big-tooth aspen (Populus grandidentata) 20 Willow (Salix sp.) 21 Alternate-leaved dogwood (Cornus alternifolia) 22 Cherry (unspecified) (Prunus sp.) Seq# sequence number (unique number for each tree; multiple stems of same tree have same sequence) A positive integer representing the sequence number for the current sample Tag# tag number (not relevant for W5 at this time) A positive integer tag identifier - Tag number is not relevant for W5 at this time Dbh diameter at breast height, in cm centimeter .1 real Vig vigor code 0 healthy 1 diseased beech (with beech bark disease) 2 diseased beech with crown in decline 3 sick (trees with crown in decline) 4 standing dead tree 5 standing dead snag (no limbs left) AbvBmss aboveground biomass in kilograms estimated for each stem kilogram .01 real - Data missing or not relevant to ws5 at this time BlwBmss belowground biomass in kilograms estimated for each stem kilogram .01 real - Data missing or not relevant to ws5 at this time Area plot area in square meters for plot on which trees >=1.5 cm dbh were measured squareMeter .01 real