uid=ARC,o=lter,dc=ecoinformatics,dc=org all public read 8588n2fc Arctic LTER Program Michael Miller Arctic LTER Program Rowe William 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/ 1988 Chlorophyll A, and primary productivity of lake N-2 treatment for 1985, 1986, 1987, 1988 , Arctic LTER 1985 to 1988. chlorophyll a primary production 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=./lakes/chlor/xlsfiles/8588n2fc.html Lake N-2 fert (treatment) -149.625086307 -149.625086307 68.6409472345 68.6409472345 1985-05-01 1985-09-01 Log of changes: This data was taken from the file 89micln2.dat and separated out by lake and year by Neil Better on Jan 26, 1995 For Archival Use: DATE RECEIVED: DATA FILE ENTERED BY: DATA FILE VALIDATION: NAME: Julie Pallant DATE: 8Oct91 Version 3: Updated metadata to newer form (with sites sheet). CH May 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/ Water samples were taken weekly from both sides of lake N-2. The sampling depths for the Control side were 0, 1, 3, 5, and 6 meters and the Treatment side were 0, 1, 3, 5, and 7 meters. Samples were filtered through a Gelman A/E glass fiber filter. Filters were extracted in the dark for 24 hours and read on a Turner 111 fluorometer. Algae was incubated for 24 hours, filtered onto a .45 um Metricel filter and counted with a liquid scintillation counter. Reference Citations: R.G. Wetzel & G.E. Likens. 1979. Limnological Methods. Saunders. Philadelphia. Sampling Description. None pers-1 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 8588n2fc.csv Chlorophyll A, and primary productivity of lake N-2 treatment for 1985, 1986, 1987, 1988 , Arctic LTER 1985 to 1988. 8588n2fc.csv 1 \r\n column , " http://metacat.lternet.edu/das/dataAccessServlet?docid=knb-lter-arc.107&urlTail=lakes/chlor/data/8588n2fc.csv Site Code Site Code site code for lake site code for lake Lake Lake Lake sampled Lake sampled Depth Depth Depth of sample meters meter real .=Missing or Not Measured code for missing values Date Date Date ddmmyy Active chl a Active chl a Active chlorophyll a ug/L microgramPerLiter real .=Missing or Not Measured code for missing values Sum chl a Sum chl a Sum, Active chlor a ug/m2 gramPerMeterSquared real .=Missing or Not Measured code for missing values Phaeo Phaeo pheopigments ug/L microgramPerLiter real .=Missing or Not Measured code for missing values Sum phaeo Sum phaeo Sum, pheopigments ug/m2 gramPerMeterSquared real .=Missing or Not Measured code for missing values Pprod (mg available C/m3/d) Pprod (mg available C/m3/d) Prim Prod mg available C/m3/d microgramPerLiterPerDay real .=Missing or Not Measured code for missing values Sum Pprop Sum Pprop Sum, Prim Prod mg available C/m2/d milligramPerMeterSquaredPerDay real .=Missing or Not Measured code for missing values 160 8588n2fc.xls An excel file that has worksheets with the metadata and data. 8588n2fc.xls Microsoft Excel http://metacat.lternet.edu/das/dataAccessServlet?docid=knb-lter-arc.107&urlTail=lakes/chlor/xlsfiles/8588n2fc.xls Microsoft Excel file micrograms per liter grams per square meter micrograms per liter per day milligrams of substance per square meter per day