uid=ARC,o=lter,dc=ecoinformatics,dc=org all public read 2000lgcover.6 Arctic LTER Program Laura Gough

Department of Biology Box 19498 University of Texas at Arlington Arlington Texas 76019 USA

Arctic LTER Program

The Ecosystems Center Marine Biological Lab 7 MBL St Woods Hole MA 02543 USA

(508) 289 7496 arc_im@mbl.edu http://ecosystems.mbl.edu/ARC/ Gus Shaver Associated Researcher 2002 Relative percent cover was measured for plant species on Arctic LTER experimental plots in moist acidic and moist non-acidic tundra. Percent cover Alaska diversity tundra relative abundance disturbance populations Acceptance and utilization of LTER data requires that: The Principal Investigator be sent a notice stating reasons for acquiring any data and a description of the publication intentions. The Principal Investigator of the data set be sent a copy of the report or manuscript prior to submission and be adequately cited in any resultant publications A copy of any resultant publications should be sent to: Principal Investigator Ecosystems Center Marine Biological Laboratory Woods Hole, MA 02543 http://ecosystems.mbl.edu/ARC/meta_template.php?FileName=./terrest/plantinfo/xlsfiles/2000lgcover.html Arctic LTER, Toolik Field Station, North Slope Alaska - Moist Acidic Tussock Tundra. -149.61058 -149.61058 68.62405 68.62405 Arctic LTER, Toolik Field Station, North Slope Alaska - Moist Non-acidic Tussock Tundra. -149.64074 -149.64074 68.6342 68.6342 2000-06-15 2000-08-01 Organisms Studied Genus Vaccinium Species vitis-idaea Genus Vaccinium Species uliginosum Genus Tofieldia Species coccinea Genus Thalictrum Species sp. Genus Stellaria Species edwardsii Genus Silene Species acaulis Genus Senecio Species resedifolius Genus Sedge Genus Saxifraga Species sp. Genus Saxifraga Species reflexa Genus Saxifraga Species punctata Genus Saxifraga Species hirculus Genus Saxifraga Species hieraciifolia Genus Saxifraga Species davurica Genus Saussurea Species sp. Genus Saussurea Species angustifolia Genus Salix Species reticulata Genus Salix Species pulchra Genus Salix Species phlebophylla Genus Salix Species glauca Genus Salix Species arctica Genus Rubus Species chamaemorus Genus Rhododendron Species lapponicum Genus Ranunculus Species sp. Genus Pyrola Species secunda Genus Pyrola Species grandiflora Genus Potentilla Species sp. Genus Polygonum Species viviparum Genus Polygonum Species bistorta Genus Poa Species arctica Genus Pedicularis Species sudetica Genus Pedicularis Species sp. Genus Pedicularis Species oederi Genus Pedicularis Species kanei Genus Pedicularis Species capitata Genus Papaver Species sp. Genus Oxytropis Species sp. Genus Minuartia Species arctica Genus Luzula Species sp. Genus Ledum Species palustre Genus Lagotis Species glauca Genus Geum Species glaciale Genus Eriophorum Species vaginatum Genus Eriophorum Species russeolum Genus Eriophorum Species angustifolium subspecies triste Genus Equisetum Species arvense Genus Empetrum Species nigrum Genus Dryas Species octopetala Genus Dryas Species integrifolia Genus Draba Species sp Genus Claytonia Species bostockii Genus Cassiope Species tetragona Genus Carex Species sp. Genus Carex Species bigelowii Genus Carex Species aquatilis Genus Cardamine Species hyperborea Genus Calamagrostis Species canadensis Genus Betula Species nana Genus Astragalus Species sp. Genus Arnica Species sp. Genus Arctostaphylous Species alpina Genus Andromeda Species polifolia Log of changes: Version 2: Translated metadata into Excel metada worksheet, added attribute table and title. Jan 2006 Jiml Version 3: Moved location of file so the URL changed. Nov 2007 Jim L Version 4: Added LTERNET Data Access server proxy for Excel and comma delimited data files. Version 5: Upadte LTERNET Data Access server proxy link for Excel and comma delimited data files. Changed from knb to das in url. Version 6: Updated metadata form to newer version (without site sheet). Fixed discrepency with header variable names. CH 25Jan2013. Updated to newer metadata with site sheet. CH March 2013. Data Manager

The Ecosystems Center Marine Biological Lab 7 MBL St Woods Hole MA 02543 USA

(508) 289 7496 arc_im@mbl.edu http://ecosystems.mbl.edu/ARC/ ARC LTER

The Ecosystems Center Marine Biological Lab 7 MBL St Woods Hole MA 02543 USA

(508) 289 7496 arc_im@mbl.edu http://ecosystems.mbl.edu/ARC/ The LTER moist acidic tussock (MAT) site was set up in 1989. The experimental design is four blocks of 5 x 20 meter plots with randomly assigned treatments within each block. Treatments include control (CT), nitrogen added (N), phosphorus added (P), and nitrogen plus phosphorus (NP). Fertilizer is added annually following snowmelt in June as 10 g/m2 nitrogen (as NH4NO3) and 5 g/m2 phosphorous (as triple superphosphate). A passive warming experiment is conducted annually plastic covered greenhouses (GH) and warming amended N plus P as described above (GHNP). Exclosure plots were set up at the MAT site in July 1996 on extra 5 x 20 meter plots within the four-block design of the 1989 LTER acidic tussock experimental plots. On each plot a 5 x 10 meter section was fenced with large mesh (4-inch square mesh) and within this fence a 5x5-meter plot was fenced with a small mesh (1/2-inch square mesh). In each block two fenced plots were setup: a plot with no fertilizer and a plot with annual fertilization treatments as described above. Thus the treatments created are no fence, no fertilizer (NFCT); small mesh fence, no fertilizer (SFCT); large mesh fence, no fertilizer (LFCT); no fence, N plus P (NFNP); small mesh fence, N plus P (SFNP); and large mesh fence, N plus P (LFNP). Only NFCT and NFNP were censused in 2000. In 1997 pH manipulation plots were established by creating one new 5 x 20 m plot adjacent to each of the original four blocks described above. Each plot was divided into two 5 x 10 m sections. Lime (L) is added annually at the rate of 150 g/m2 to raise pH in one half of the plot, and elemental sulfur (S) is added annually at the rate of 50 g/m2 to decrease pH in the other half of the plot. In 1997 experimental plots were established at the LTER moist non-acidic tussock (MNT) site with the same methods as those used at MAT. CT, N, P, NP, L and S treatments are replicated in three blocks. GHCT and GHNP treatments are replicated in two blocks. Calculations: All percent cover values were summed within each plot, and then each value was divided by the total to generate a percent cover value standardized to 100%. Reference Citations: Gough, L. and S.E. Hobbie. 2003. Responses of moist non-acidic arctic tundra to altered environment: productivity, biomass, and species richness. Oikos 103:204-216. Sampling Description. Permanent monitoring areas were established in all treatment plots in 1998. Eight 1 m2 plots are sampled in each treatment in each block each year at the end of July. A 1 m2 quadrat is aligned 0.2 m inside of the plot at the site of a flag marking the first measurement. Within this quadrat, aerial percent cover of all vascular plants are noted by species as is all other ground cover. Categories include moss (all species lumped), lichen (all species lumped), litter, and standing dead Betula nana. Bare ground, frost boil, and water are also recorded. As an indicator of vole activity, the percent cover of the plot comprised of vole burrow holes, vole trails, and vole litter (small pieces of dead plant material) are also recorded. To standardize cover among plots, all percent cover values were summed within each plot, and then each value was divided by the total to generate a percent cover value standardized to 100%. pers-1 Gus Shaver

The Ecosystems Center Marine Biological Lab 7 MBL St Woods Hole MA 02543 USA

(508) 289 7496 gshaver@mbl.edu Lead PI Jim Laundre

The Ecosystems Center Marine Biological Lab 7 MBL St Woods Hole MA 02543 USA

(508) 289 7496 arc_imr@mbl.edu Information Manager The goal of Arctic LTER project is to predict the future ecological characteristics of the site based upon our knowledge of the controls of ecosystem structure and function as exerted by physical setting and geologic factors, climatic factors, biotic factors, and the changes in fluxes of water and materials from land to water. To achieve this goal the Arctic LTER uses several approaches: Long-term monitoring and surveys of natural variation of ecosystem characteristics in space and time. Includes: climate, plant communities and productivity, thaw depth, stream flow, chemistry of streams and lakes, temperatures of streams and lakes, lake chlorophyll lake productivity, zooplankton abundance. Experimental manipulation of ecosystems for years and decades. Includes: tundra warming, shading, and fertilizing, grazer exclusions, fertilization of lakes and streams, addition and subtraction of predators. Synthesis of results and predictive modeling at ecosystem and watershed scales. Includes: stream N cycling, lake physics, bioenergetics of fish populations, water movement and transfer of DOC and nutrients from land to water, soil respiration, cycling and storage of C in tundra under different scenarios of future climates. This material is based upon work supported by the National Science Foundation under Grants #DEB-981022, 9211775, 8702328; #OPP-9911278, 9911681, 9732281, 9615411, 9615563, 9615942, 9615949, 9400722, 9415411, 9318529; #BSR 9019055, 8806635, 8507493. Any opinions, findings, conclusions, or recommendations expressed in the material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation. The Arctic LTER research site (68°N and 149°W) is in the foothills region of the North Slope of Alaska and includes the entire Toolik Lake watershed and the adjacent watershed of the upper Kuparuk River, down to the confluence of these two watersheds. This area is typical of the northern foothills of the Brooks Range, with continuous permafrost, no trees, a complete snow cover for 7 to 9 months, winter ice cover on lakes, streams, and ocean, and cessation of river flow during the winter. Tussock tundra vegetation of sedges and grasses mixed with dwarf birch and low willows form the dominant vegetation type with areas of drier heath tundra on ridge tops and other well-drained sites as well as areas of river-bottom willow communities. -149.75 -149.0433 68.8 68.5 610 1360 meter 2000lgcover.csv Arctic LTER 2000: Relative percent cover was measured for plant species on Arctic LTER experimental plots in moist acidic and moist non-acidic tundra. 2000lgcover.csv 1 \r\n column , " http://metacat.lternet.edu/das/dataAccessServlet?docid=knb-lter-arc.1391&urlTail=terrest/plantinfo/data/2000lgcover.csv Year Year The year of percent cover measurement yyyy Site Site The site of percent cover measurement The site of percent cover measurement Treatment Treatment The manipulated treatment The manipulated treatment Block Block The treatment block number The treatment block number Plot Plot Sample plot where percent cover was measured Sample plot where percent cover was measured Species Species Species and cover categories determined on plots as described above. Species and cover categories determined on plots as described above. Relative Cover Relative Cover The percent cover of a given species relative to the total cover of the plot percent real 4891 2000lgcover.xls An excel file that has worksheets with the metadata and data. 2000lgcover.xls Microsoft Excel http://metacat.lternet.edu/das/dataAccessServlet?docid=knb-lter-arc.1391&urlTail=terrest/plantinfo/xlsfiles/2000lgcover.xls Microsoft Excel file ratio of two quantities as percent composition (1:100)