1993_to_current_mopt_kup.02 William (Breck) Bowden

304 Aiken Center Rubenstein School of Environment and Natural Resources Burlington Vermont 05405 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/ Jacques Finlay additional investigator Dave Arscott additional investigator Ken Edwardson additional investigator Morgan Greenwald additional investigator Julia Larouche additional investigator Joe Bartlett additional investigator Elissa Schuett additional investigator 2009 This file contains the consolidated data for percent cover of dominant bryophytes and other easily identifiable macro-algae in the experimental reaches of the Kuparuk River beginning in 1993 and updated annually. In some years percent cover was recorded more than one time per season. In all years percent cover was recorded in riffle habitats and in some (early) years percent cover was recorded for pool habitats. This file will be updated periodically with new data as it is acquired. The current date range is as indicated in the file name. Bryophytes mosses algae kuparuk primary producers benthos primary production disturbance 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=./streams/primprod/1993_to_current_mopt_kup.html Kuparuk river reference, recovery, and fertilized reaches 68.748 -149.511 68.599 -149.359 68.748 -149.511 68.599 -149.359 1993-06-23 2009-07-31 Crum and Anderson (1981), Conard and Redfearn (1979), and Vitt et al. (1993), typically identified to genus Genus Bryophytes Genus algae Individual annual files were consolidated into this file in Novermber 2007. At this time a data check was done to ensure that the transfer was accurate. Future addtions to the the same data file should reference this metadata file, with updates as needed. XX November 2007: Data consolidation complete and data transferred to Arctic LTER data managers for posting. 12/29/2009 updated 2008-09 data EBS Version 2: Update LTERNET Data Access server proxy link for Excel and comma delimited data files. Changed from knb to das in url. 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/ Study Site General description (modified from Benstead et al. 2007): Fertilization of the Kuparuk River with P (added as H3PO4 via continuous dripper from mid-June to mid-August, fixed-rate with a target concentration of 0.3 µM at a nominal discharge of 2 m3/sec) started in the summer of 1983. The H3PO4 was added at an arbitrary point called 0.0 km, located 1.6 km upstream of the river crossing at the Dalton Highway (see Peterson et al., 1985 for early results of fertilization). In subsequent years, all points on the Kuparuk River were referenced relative to this datum. In 1985 the P dripper was moved 0.59 km downstream, forming the first Kuparuk recovery reach (enriched for the two previous summers, 1983-1984) between 0.0 km and 0.59 km. In 1996 the dripper was moved downstream a second time, to 1.4 km below the original dripper site (Fig. 1). The reach between 0.59 km and 1.4 km became the second Kuparuk recovery reach (enriched for 13 consecutive summers, 1983-1995). See Slavik et al. (2004) for an summary of other relevant data the Kuparuk River long-term fertilization experiment. The specific reaches represented in this data set come from the following general areas unless noted otherwise: 1992-1995 Fertilized from 0.59km to 18km Reference from 0.5km to -9.5km 1996-2007 Fertilized from 1.6km to 6km Recovery from 1km to 1.39km Reference from -0.05 to 0.7km Sampling Methods Data were acquired using point transects (Bowden et al. 1994, Bowden et al. 2006). Typically five transects were established across the river at ever sampling station. The transect locations were not permanently monumented and so for sites that were revisited several times a year or over many years, the exact location of the transects vary somewhat. While useful information is contained in the individual transects, statistical comparisons should typically be based on the mean cover values for all transects done at a site as the fundamental reporting unit. At intervals of about 10 cm along each transect, we noted the nature of the plant cover on the cobbles. Three moss species (Schistidium [Grimmia] agassizii Sull. & Lesq. in Sull., a mixture of H. alpestre [Hedw.] Loeske and H. ochraceum [Turn.] Loeske, and Fontinalis neomexicana Sull. & Lesq.), one liverwort (Solenostoma sp.), and the macroalgae previously mentioned, could be identified easily by eye in the field and were recorded as being present or absent. In subsequent years, other easily recognizable cover categories were recorded (e.g. Lemanea spp., Phormidium spp.). Only one species was assigned to a point. For a typical river width of 15 m, each transect provided roughly 150 points or 750 points at each station. Species frequency was determined from the number of times each species was encountered, divided by the total number of points sampled in a transect. Only one species (or "bare") was recorded as present at any one point. “Bare” recordings in the field notes were assumed to consist of an epilithic biofilm of diatoms and other microalgae as reported by Miller et al. (1992) and are recorded in the database here as "Epilithic algae". In different years slightly different river sites were sometimes measured. Any measured site is a representative sample of the reach from which it came. The dataset contains the "actual" station location information. However, to consolidate the data and facilitate comparisons among reaches and across years, the data from closely co-located actual stations has been aggregated John Hobbie

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

(508) 289 7496 jhobbie@mbl.edu Lead PI 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 uid=ARC,o=lter,dc=ecoinformatics,dc=org all public read 1993_to_current_mopt_kup.dat Moss point transect data (1993 to current year) - Kuparuk River, Arctic LTER, Toolik Field Station, Alaska. 1993_to_current_mopt_kup.dat 1 column , http://metacat.lternet.edu/das/dataAccessServlet?docid=knb-lter-arc.10051&urlTail=streams/primprod/data/1993_to_current_mopt_kup.dat Year Year The year in which the data were collected yyyy River River The river/stream from which the data were collected The river/stream from which the data were collected Station Station Location of the sampling site in relation to 1983 dripper location at 0.0km (~1.7km upstream from Dalton Highway) kilometer real Nominal Station Nominal Station name of station name of station Date Date The date on which the data were collected dd-mm-yyyy Period Period Timeframe of sample (early, mid, or late summer) Timeframe of sample (early, mid, or late summer) Reach Reach Location of the sampling site in relation to the fertilized, recovery and reference sections of the river Location of the sampling site in relation to the fertilized, recovery and reference sections of the river Habitat Habitat reach type reach type Species/Cover Type Species/Cover Type species or cover description species or cover description Mean Mean average percent cover percent real SE SE standard error of %mean cover/species type number real n n number of transects in %mean cover/species type number whole 1993_to_current_mopt_kup.xls An excel file that has worksheets with the metadata and data. 1993_to_current_mopt_kup.xls Microsoft Excel http://metacat.lternet.edu/das/dataAccessServlet?docid=knb-lter-arc.10051&urlTail=streams/primprod/xlsfiles/1993_to_current_mopt_kup.xls Microsoft Excel file ratio of two quantities as percent composition (1:100)