TITLE. Point frame species list for Imnavait Creek and Toolik Lake grids: 1989-2001 Plant species list ABSTRACT. Permanent 1-m^2 plots were established beside each of 72 out of the 100 Imnavait grid stakes in 1989 and 90 out of the 100 Toolik Lake in 1990. The grid points are spaced 100 meters apart. Plots are numbered according to row and column, beginning with northwest corner of the grid and ending at the southeast corner of the grid. Each plot was located within 2 m of the grid stake, but always in the same vegetation type as that associated with the stake. The distance and direction from them were randomly selected, and thus varied from plot to plot. Point quadrate measurements are to be made every 5 years to quantify species composition, canopy structure, and microtopography. The point-quadrate technique used was identical to that described by Auerbach (1992): The point-quadrate method was used for estimating canopy stratification and plant cover. Aluminum point-quadrate frames were 1-m^2 in size, with double-layer filament spaced 10 cm apart to make a 10 x 10 cm grid for a total of 100 sample points per plot. Before sampling, the point-quadrate frame was leveled and plots were permanently marked in the following manner. Aluminum tags were nailed into the ground so that a frame could be repositioned in the same location from year to year; i.e., tags with a hole in the middle were used to define the locations for the point frame legs and four tags with a "X" stamped on them (positioned somewhere inside each of the frame corners) were used to define alignment of the frame by positioning the string crossings over these "X"s. CITATIONS. Auerbach, N. 1992. Effects of road and dust disturbance in minerotrophic and acidic tundra ecosystems, Northern Alaska. MS thesis, University of Colorado, Boulder. 253 pp. PRINCIPAL INVESTIGATOR: Dr. Marilyn Walker Leader, Boreal Ecology Cooperative Research Unit USFS PNW Research Station and University of Alaska Fairbanks Boreal Ecology Cooperative Research Unit School of Agriculture and Land Resources Management P.O. Box 756780 University of Alaska Fairbanks Fairbanks, AK 99775-6780 Phone: 907-474-2424 Fax: 907-474-6251 E-mail: ffmdw@uaf.edu FUNDING SOURCE: National Science Foundation ARCTIC SYSTEM SCIENCE PROGRAM: Land-Atmosphere-Ice Interactions (LAII) and The International Tundra Experiment (ITEX) GRANT TITLE AND GRANT NUMBERS: Department of Energy Collaborative Research: Species Responses to Changes in Climate Across Arctic Gradients Using the North America ITEX Network (NATEX): Influences On Community and Ecosystem Processes 1989 - 1990: DOE-R4D 1994 - 1998: OPP-9400083 1999 - 2003: OPP-9996383, OPP-9907127 CONDITIONS FOR USE AND CITATION: For permission to use these data, contact the Principal Investigator. Grant numbers must be cited in any manuscripts resulting from these data. In addition, a copy of the manuscript must be sent to the PI. DATA SET OVERVIEW: This file contains species list with growth forms for the point frame data collected at the Imnavait Creek and Toolik Lake Grids from 1989 to 2001. The grids are part of the International Tundra Experiment network. The goal of this project is to assess potential changes in tundra plant communities in response to global climate change. This file can be used in conjunction with the data files from each grid to determine species names from the numeric species code found in the grid data file. TIME PERIOD COVERED BY DATA: 19890708 to 20010901 PHYSICAL LOCATION OF MEASUREMENT: Imnavait Creek grid and Toolik Lake grid Alaska USA Imnavait Creek grid 405800E 7613200N (NW corner) 406600E 7612300N (SE corner) Toolik Lake grid 393600E 7614800N (NW corner) 394600E 7613800N (SE corner) 68N 149W DATA COLLECTION AND PROCESSING: see abstract above The full scientific names and growth form code corresponding to the species codes can be found below ordered by species code, species name and DATA FORMAT: coma delimited FILE NAME: pointframe_species.csv SUMMARY OF VARIABLES FOR DATA: 1. Species_Number: numbered species code 2. Species_name: full species name 3. Species_code: 6-9 letter species code 4. Growth_Form: numbered growth form code Growth form codes ordered by code and name are below: 2,Deciduous tree 11,Evergreen shrub < 3 cm 12,Evergreen shrub 3-10 cm 13,Evergreen shrub 10-30 cm 21,Deciduous shrub < 3 cm 22,Deciduous shrub 3-10 cm 23,Deciduous shrub 10-30 cm 24,Deciduous shrub > 30 cm 30,Monocot 31,Caespitose graminoid 32,Non-Caespitose graminoid 33,Non-graminoid monocot 40,Dicot 41,Cushion dicot 42,Mat dicot 43,Rosette dicot 44,Erect dicot 45,Non-rotted aquatic dicot 46,Vine dicot 50,Pteridophyte 51,Horsetail 52,Fern 53,Club moss 54,Lycopodium 60,Moss 61,Pleurocarpous moss 62,Acrocarpous moss 64,Leafy liverwort 65,Thalloid liverwort 66,Sphagnum 70,Lichen 71,Crustose Lichen 72,Foliose lichen 73,Fruticose lichen 74,Gelatinous lichen 81,Algae 82,Fungus 90,Succulent 91,Cushion succulent 92,Jointed succulent 93,Ball succulent 94,Leafy succulent 200,Nonliving DOCUMENTATION AUTHOR: Original: Leanne Lestak 8 August 1994 Updated by: Jamie Hollingsworth 13 February 2002 PRINCIPAL FIELD WORKERS: Marilyn Walker, Nancy Auerbach, William Gould, Henrik Wahren, and Julie Crawford NOTES: Specie_numbers 2000, 2001, 2002, 2003, 2004, and 2005 are missing species names