Upper Midwest Environmental Sciences Center
Last updated August 12, 2002 VEGETATION SRS LIABILITY DISCLAIMER AND FORMAT DESCRIPTION Disclaimer These data have been generated by State agencies under contract with the Department of the Interior and the Upper Midwest Environmental Sciences Center (UMESC). Although these data have been processed successfully on a computer system at the UMESC, no warranty, expressed or implied, is made regarding the accuracy or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. Error correction is a continuing process, and UMESC corrects data errors routinely when a correct value can be determined. UMESC does not delete questionable data when the correct value cannot be determined, but attempts to mark such data with an appropriate flag. Users are strongly cautioned to check the accuracy of any data obtained and to report suspected values to UMESC. Methods, purposes, and conditions can vary dramatically among data-collecting efforts and these data should not be combined with other datasets from the UMESC or other sources unless the user fully understands the procedures and purposes used to create each set of data and can verify that data are comparable across sources. ------------------------------------------------------------------------------- Crediting Language These data are a product of the U.S. Army Corps of Engineer's Upper Mississippi River Restoration Program (UMRR) Long Term Resource Monitoring (LTRM) element implemented by the U.S. Geological Survey in collaboration with the five Upper Mississippi River System (UMRS) states of Illinois, Iowa, Minnesota, Missouri, and Wisconsin. The U.S. Army Corps of Engineers (Corps) provides guidance and has overall program responsibility. ------------------------------------------------------------------------------- VEGETATION SRS ANALYSIS DATA HISTORY Annual Vegetation SRS monitoring on the Upper Mississippi River System (UMRS) was implemented in 1998 under the Long Term Resource Monitoring Program (LTRMP) ------------------------------------------------------------------------------- FOREWARD Use of LTRMP Trend Data for Vegetation SRS Monitoring All potential users of these data are strongly encouraged to read and understand the Vegetation Monitoring section of the LTRMP Procedures Manual (Yin, Y. etal 2000), which describes procedures for Vegetation Stratified Random Sampling, before undertaking any analysis or interpretation of data. This document is accessible by request from: Manager, Information Transfer and Media Services Upper Midwest Environmental Sciences Center U.S. Geological Survey 575 Lester Avenue Onalaska, WI 54650-8552 USA Tel: (608) 783-7550, ext. 66 Fax: (608) 783-8058 ------------------------------------------------------------------------------- SUMMARY LTRMP Vegetation Sampling Design Currently, the LTRMP conducts annual monitoring of vegetation in five study reaches of the Upper Mississippi River System: Navigation Pools 4, 8, 13 and 26 on the Mississippi River; and La Grange Pool on the Illinois River. The LTRMP will continue to expand vegetation monitoring beyond these five study reaches and welcomes participation by other agencies and groups that could sample other areas using the LTRMP sampling protocol. Contact Yao Yin, Tel: (608) 783-7550 ext. 53, Internet: yao_yin@usgs.gov for further information. ------------------------------------------------------------------------------- REFERENCES Yin, Y., J.S. Winkelman, and H.A. Langrehr 2000. Long Term Resource Monitoring Program Procedures: Aquatic Vegetation monitoring. U.S. Geological Survey, Upper Midwest Environmental Sciences Center, LaCrosse, Wisconsin, April 2000. LTRMP 95-P002-7. 8 pp. + Appendixes A-C -------------------------------------------------------------------------------VEGETATION SRS FIXED FORMAT FILE DOWNLOAD FILE THE "FORMAT" COLUMN CONTAINS THE FOLLOWING FORMAT SPECIFIERS: "a": alpha character (always UPPER case); "b": a blank space; "blank": a missing value; "c": alpha character/symbol/digit; "c(xx)": character string where xx represents the maximum number of characters allowed; "9": any digit, 0 - 9; "MM/DD/YYYY": date format; ------------------------------------------------------------------------------- Field Name Short Name Format Value Range/Default Value Historical Info -------------------------------------------------------------------------------- BARCODE BARCODE 99999999 0 - 99999999 1998 TO PRESENT ROW NUMBER ROWNUM 99 1 - 99 1998 TO PRESENT PAGE NUMBER PAGENUM 99 1 - 99 1998 TO PRESENT FIELD STATION NUMBER FLDNUM 9 1,2,3,4,6 1998 TO PRESENT PROJECT CODE PROJCD ccccc see below 1998 TO PRESENT POOL/REACH POOL cc 04,05,07,08,12,13,26,AL,LG 1998 TO PRESENT DATE DATE MM/DD/YYYY 06/01/1998 - Present 1998 TO PRESENT CREW LEADER CODE LDRCODE cccc see below 1998 TO PRESENT RECORDER CODE RCRDCODE cccc see below 1998 TO PRESENT DETRITUS DETRITUS 9 blank,1 1998 TO PRESENT PREDOMINANT SUBSTRATE SBSTRATE 9 1,2,3,4,5,6 1998 TO PRESENT SITE CODE SITECD 999 0 - 999 1998 TO PRESENT MAP STRATUM MSTRATUM aaaaaaaa see below 1998 TO PRESENT ACTUAL STRATUM ASTRATUM aaaaaaaa see below 1998 TO PRESENT RIVER MILE RIVMILE cccc see below 1998 TO PRESENT SUBMERSED VEGETATION VEG_S a blank,S 1998 TO PRESENT ROOTED FLOATING LEAF VEGETATION VEG_RF a blank,F 1998 TO PRESENT EMERGENT VEGETATION VEG_E a blank,E 1998 TO PRESENT ALGAE VEG_A a blank,A 1998 TO PRESENT NONROOTED FLOATING LEAF VEG. VEG_NRF a blank,N 1998 TO PRESENT UNVEGETATED VEG_U a blank,U 1998 TO PRESENT NONROOTED FLOATING COVER COV_NRF 9 0,1,2,3,4,5 1998 TO PRESENT ROOTED FLOATING COVER COV_RF 9 0,1,2,3,4,5 1998 TO PRESENT EMERGENT COVER COV_E 9 0,1,2,3,4,5 1998 TO PRESENT 1ST UTM EASTING EAST1 999999 000000 - 999999 1998 TO PRESENT 1st UTM NORTHING NORTH1 9999999 0000000 - 9999999 1998 TO PRESENT UTM ZONE ZONE 99 0 - 99 1998 TO PRESENT 1ST ACCURACY ACCUR1 99.9 0 - 99.9 1998 TO PRESENT UTM METHOD METHOD a D,G,F,X,B,O, 1998 TO PRESENT 2ND UTM EASTING EAST2 999999 000000 - 999999 1998 TO PRESENT 2ND UTM NORTHING NORTH2 9999999 0000000 - 9999999 1998 TO PRESENT 2ND UTM ACCURACY ACCUR2 99.9 0 - 99.9 1998 TO PRESENT UMESC UTM ZONE ZONE_U 99 0 - 99 1998 TO PRESENT UMESC UTM EASTING EAST_U 999999 000000 - 999999 1998 TO PRESENT UMESC UTM NORTHING NORTH_U 9999999 0000000 - 9999999 1998 TO PRESENT GIS GRID CODE GRIDCODE 99999.99999 0 - 99999.99999 1998 TO PRESENT ZONE15 EAST/WEST EAST_15 999999 000000 - 999999 1998 TO PRESENT ZONE15 NORTH/SOUTH NORTH_15 9999999 0000000 - 9999999 1998 TO PRESENT HABITAT SUBSAMPLES 1 HABITAT1 a blank,T 1998 TO PRESENT HABITAT SUBSAMPLES 2 HABITAT2 a blank,T 1998 TO PRESENT HABITAT SUBSAMPLES 3 HABITAT3 a blank,T 1998 TO PRESENT HABITAT SUBSAMPLES 4 HABITAT4 a blank,T 1998 TO PRESENT HABITAT SUBSAMPLES 5 HABITAT5 a blank,T 1998 TO PRESENT HABITAT SUBSAMPLES 6 HABITAT6 a blank,T 1998 TO PRESENT WATER DEPTH SUBSAMPLES 1 DEPTH1 9.9 0 - 9.9 1998 TO PRESENT WATER DEPTH SUBSAMPLES 2 DEPTH2 9.9 0 - 9.9 1998 TO PRESENT WATER DEPTH SUBSAMPLES 3 DEPTH3 9.9 0 - 9.9 1998 TO PRESENT WATER DEPTH SUBSAMPLES 4 DEPTH4 9.9 0 - 9.9 1998 TO PRESENT WATER DEPTH SUBSAMPLES 5 DEPTH5 9.9 0 - 9.9 1998 TO PRESENT WATER DEPTH SUBSAMPLES 6 DEPTH6 9.9 0 - 9.9 1998 TO PRESENT PLANT DENSITY SUBSAMPLES 1 DENSITY1 9 0,1,2,3,4,5 1998 TO PRESENT PLANT DENSITY SUBSAMPLES 2 DENSITY2 9 0,1,2,3,4,5 1998 TO PRESENT PLANT DENSITY SUBSAMPLES 3 DENSITY3 9 0,1,2,3,4,5 1998 TO PRESENT PLANT DENSITY SUBSAMPLES 4 DENSITY4 9 0,1,2,3,4,5 1998 TO PRESENT PLANT DENSITY SUBSAMPLES 5 DENSITY5 9 0,1,2,3,4,5 1998 TO PRESENT PLANT DENSITY SUBSAMPLES 6 DENSITY6 9 0,1,2,3,4,5 1998 TO PRESENT SITE BATCH NUMBER BATCHNUM 9999 see below 1998 TO PRESENT SPECIES CODE SPPCD cccccc see below 1998 TO PRESENT VISUAL SUBSAMPLES 1 VISUAL1 9 0,1 1998 TO PRESENT VISUAL SUBSAMPLES 2 VISUAL2 9 0,1 1998 TO PRESENT VISUAL SUBSAMPLES 3 VISUAL3 9 0,1 1998 TO PRESENT VISUAL SUBSAMPLES 4 VISUAL4 9 0,1 1998 TO PRESENT VISUAL SUBSAMPLES 5 VISUAL5 9 0,1 1998 TO PRESENT VISUAL SUBSAMPLES 6 VISUAL6 9 0,1 1998 TO PRESENT RAKE SUBSAMPLES 1 RAKE1 9 0,1,2,3,4,5 1998 TO PRESENT RAKE SUBSAMPLES 2 RAKE2 9 0,1,2,3,4,5 1998 TO PRESENT RAKE SUBSAMPLES 3 RAKE3 9 0,1,2,3,4,5 1998 TO PRESENT RAKE SUBSAMPLES 4 RAKE4 9 0,1,2,3,4,5 1998 TO PRESENT RAKE SUBSAMPLES 5 RAKE5 9 0,1,2,3,4,5 1998 TO PRESENT RAKE SUBSAMPLES 6 RAKE6 9 0,1,2,3,4,5 1998 TO PRESENT ADDITIONAL SPECIES ADDSPP 9 blank,1 1998 TO PRESENT SPECIES COVER COVSPP 9 blank,1,2,3,4,5 1998 TO PRESENT QE CODE QECODE 9 blank,1,2,3,4 1998 TO PRESENT VOUCHER VOUCHER 9 blank,1,2 1998 TO PRESENT SPECIES_COUNT SPECIES_COUNT 999999 0-999999 1998 TO PRESENT -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- Field Descriptions BARCODE Identifying barcode for vegetation SRS data sheets. ROW NUMBER Numeric field to identify, isolate, and sort individual vegetation detail records. PAGE NUMBER Numeric field to record the page number of the Vegetation SRS data sheet. FIELD STATION NUMBER Numeric code identifying the field station number. Listed below are the valid codes and their corresponding field station. 1 = Lake City, MN 2 = Onalaska, WI 3 = Bellevue, IA 4 = Brighton, IL 6 = Havana, IL PROJECT CODE The code to describe what project the datasheet is associated with. For Long Term Resource Monitoring Vegetation SRS data, the project code is M-98A POOL/REACH Alphanumeric code for the LTRMP study reach or pool number: 04 = Pool 4, UMR 05 = Pool 5, UMR 07 = Pool 7, UMR 08 = Pool 8, UMR 12 = Pool 12, UMR 13 = Pool 13, UMR 26 = Pool 26, UMR AL = Alton Pool, Illinois River LG = La Grange Pool, Illinois River DATE The month, day, and year the site was sampled. Format is mm/dd/yyyy. CREW LEADER CODE A code that uniquely identifies the individual responsible for certifying that the data on the form was collected in compliance with current LTRMP procedures and are, to the best of their knowledge, complete and free of errors. RECORDER CODE A code that uniquely identifies the individual recording the data. DETRITUS A "1" identifies the presence of coarse organic (usually refractory) material in the sediment. A blank indicates no organic material was present. PREDOMINANT SUBSTRATE A code number based on the predominate substrate type. The categories are used as follows: 1 = substrates that are predominately silt and/or clay. 2 = substrates that are mostly silt but have some sand. 3 = substrates that are mostly sand but have some silt or clay. 4 = substrates that are hard clay. 5 = substrates that are gravel or rock. 6 = substrates that are sand. SITE CODE A three-digit number that identifies each site for the corresponding year. MAP STRATUM The habitat stratum of the site according to the Aquatic Area Stratum Geographic Information System (GIS) coverage. The categories are used as follows: BWC = Backwater Contiguous with the main channel BWC-L = Backwater contiguous - Pool 4 (lower) BWC-U = Backwater contiguous - Pool 4 (upper) BWI = Backwater Isolated from the main channel BWI-I = Backwater isolated from main channel - Illinois River IMP = Impounded area LK = Isolated lakes MCB = Main Channel Border MCB-I = Main channel border - Illinois River MCB-L = Main channel border - Pool 4 (lower) MCB-U = Main channel border - Pool 4 (upper) SC = Side Channel SC-L = Side channel - Pool 4 (lower) SC-U = Side channel - Pool 4 (upper) TDL-L = Tributary Delta Lake - Lake Pepin - Pool 4 (lower) TDL-U = Lake Pepin - shallow (upper) ACTUAL STRATUM If it is determined that the habitat in the field is different than the MAP STRATUM, the field habitat is recorded in the ACTUAL STRATUM box. The categories used are the same as the MAP STRATUM categories with the addition of LND = land. If the MAP STRATUM is correct, the ACTUAL STRATUM is left blank. RIVER MILE An alphanumeric code that approximates the location of the site in refrence to the Navigation River Miles used by the U.S. Army Corps of Engineers. A prefix of "M" indicates the Mississippi River and a prefix of "I" indicates the Illinois River. The river mile is rounded down to the nearest whole number. SUBMERSED VEGETATION A "S" indicates submersed species are present at the site. A blank indicates no submersed species are present. Chara and Nitella (macroalgaes) are considered submersed species. ROOTED FLOATING LEAF VEGETATION A "F" indicates rooted floating leaf species are present at the site. A blank indicates no rooted floating leaf species are present. Nelumbo and Ludwigia are considered rooted floating leaf species. EMERGENT VEGETATION An "E" indicates emergent species are present at the site. A blank indicates no emergent species are present. ALGAE An "A" indicates filamentous algae is present at the site. A blank indicates no filamentous algae is present. NONROOTED FLOATING LEAF VEGETATION A "N" indicates nonrooted floating leaf species are present at the site. A blank indicates no nonrooted floating leaf species are present. UNVEGETATED An "U" indicates no vegetation (the life forms listed above) is present at the site. A blank indicates vegetation is present. NONROOTED FLOATING COVER The percent cover of all nonrooted floating leaf species combined at the site (a 2-m wide ring). The categories are used as follows: 0 = no species present. 1 = covers 1 - 20% of the site. 2 = covers 21-40% of the site. 3 = covers 41-60% of the site. 4 = covers 61-80% of the site. 5 = covers 81-100% of the site. ROOTED FLOATING COVER The percent cover of all rooted floating leaf species combined at the site (a 2-m wide ring). The categories are the same as NONROOTED FLOATING COVER. EMERGENT COVER The percent cover of all emergent species combined at the site (a 2-m wide ring). The categories are the same as NONROOTED FLOATING COVER. 1ST UTM EASTING The Universal Transverse Mercator (UTM) easting coordinate for the site. The coordinate is recorded from a Global Positioning System (GPS) unit as soon as the field crew arrives at the site. 1ST UTM NORTHING The UTM northing coordinate for the site. The coordinate is recorded from a GPS unit as soon as the field crew arrives at the site. UTM ZONE The number that identifies the correct grid from which the UTM coordinates were taken. All the coordinates provided by UMESC are Zone 15 readings, even though part of the La Grange Pool is Zone 16. 1ST UTM ACCURACY The GPS measure of possible error related to the geometry of the satellites. This number value is recorded when the 1st UTM coordinates are recorded. The method field indicates whether the scale is Percent Dilution of Precision (PDOP) or Figure of Merit (FOM) UTM METHOD A code that identifies the method used to locate the site and the type of accuracy measurement used by that equipment. The codes are used as follows: B = base map D = GPS with differential correction and PDOP G = GPS without differential correction and PDOP F = GPS with differential correction and FOM X = GPS without differential correction and FOM O = other (explanation in the comment field) 2ND UTM EASTING The UTM easting coordinate for the site. The coordinate is recorded from a GPS unit just before leaving the site. 2ND UTM NORTHING The UTM northing coordinate for the site. The coordinate is recorded from a GPS unit just before leaving the site. 2ND UTM ACCURACY The GPS measure of possible error related to the geometry of the satellites. This number value is recorded when the 2nd UTM coordinates are recorded. The method field indicates whether the scale is Percent Dilution of Precision (PDOP) or Figure of Merit (FOM) UMESC UTM ZONE UMESC derived UTM zone (15 or 16 for LTRMP)as preassigned by UMESC. UMESC preassigns the UTM zone for stratified random sampling (SRS) only. UMESC DERIVED EASTING UMESC derived easting Universal transverse mercator (UTM) easting coordinate for a sampling site ( in meters) as preassigned by UMESC. Proper interpretation of this coordinate requires reference to the appropriate UTM zone (15 or 16 for LTRMP). UMESC preassigns coordinates for stratified random sampling (SRS) only. For SRS sites, this coordinate is also the initial assignment for Coordinates east west. UMESC DERIVED NORTHING UMESC derived northing Universal transverse mercator (UTM) northing coordinate for a sampling site ( in meters) as preassigned by UMESC. Proper interpretation of this coordinate requires reference to the appropriate UTM zone (15 or 16 for LTRMP). UMESC preassigns coordinates for stratified random sampling (SRS) only. For SRS sites, this coordinate is also the initial assignment for Coordinates north south. GIS GRID CODE Modified and concatenated utm coordinate pair used to generalize site locations within a 50 square meter area. ZONE 15 EAST WEST Zone 15 east west Universal transverse mercator (UTM) easting coordinate for a quality sampling site (in meters) referenced to a single UTM zone (15). This value is calulated from coordinated east west and is particularly useful for LTRMP areas that include both UTM zone 15 and UTM zone 16. ZONE 15 NORTH SOUTH Zone 15 north south Universal transverse mercator (UTM) northing coordinate for a quality sampling site (in meters) referenced to a single UTM zone (15). This value is calulated from coordinated north south and is particularly useful for LTRMP areas that include both UTM zone 15 and UTM zone 16. HABITAT QA SUBSAMPLE 1 A code denoting whether the subsample area was on land or water. A "T" indicates a terrestrial habitat. A blank indicates an aquatic habitat. HABITAT QA SUBSAMPLE 2 A code denoting whether the subsample area was on land or water. A "T" indicates a terrestrial habitat. A blank indicates an aquatic habitat. HABITAT QA SUBSAMPLE 3 A code denoting whether the subsample area was on land or water. A "T" indicates a terrestrial habitat. A blank indicates an aquatic habitat. HABITAT QA SUBSAMPLE 4 A code denoting whether the subsample area was on land or water. A "T" indicates a terrestrial habitat. A blank indicates an aquatic habitat. HABITAT QA SUBSAMPLE 5 A code denoting whether the subsample area was on land or water. A "T" indicates a terrestrial habitat. A blank indicates an aquatic habitat. HABITAT QA SUBSAMPLE 6 A code denoting whether the subsample area was on land or water. A "T" indicates a terrestrial habitat. A blank indicates an aquatic habitat. WATER DEPTH SUBSAMPLE 1 Water depth of the subsampling area recorded to a tenth of a meter. WATER DEPTH SUBSAMPLE 2 Water depth of the subsampling area recorded to a tenth of a meter. WATER DEPTH SUBSAMPLE 3 Water depth of the subsampling area recorded to a tenth of a meter. WATER DEPTH SUBSAMPLE 4 Water depth of the subsampling area recorded to a tenth of a meter. WATER DEPTH SUBSAMPLE 5 Water depth of the subsampling area recorded to a tenth of a meter. WATER DEPTH SUBSAMPLE 6 Water depth of the subsampling area recorded to a tenth of a meter. PLANT DENSITY SUBSAMPLE 1 A rating assigned to the total amount of submersed vegetation retreived on the rake drag. Categories are used as follows: 0 = No vegetation 1 = 1-20% of the rake teeth covered 2 = 21-40% of the rake teeth covered 3 = 41-60% of the rake teeth covered 4 = 61-80% of the rake teeth covered 5 = 81-100% of the rake teeth covered PLANT DENSITY SUBSAMPLE 2 A rating assigned to the total amount of submersed vegetation retreived on the rake drag. Categories are used as follows: 0 = No vegetation 1 = 1-20% of the rake teeth covered 2 = 21-40% of the rake teeth covered 3 = 41-60% of the rake teeth covered 4 = 61-80% of the rake teeth covered 5 = 81-100% of the rake teeth covered PLANT DENSITY SUBSAMPLE 3 A rating assigned to the total amount of submersed vegetation retreived on the rake drag. Categories are used as follows: 0 = No vegetation 1 = 1-20% of the rake teeth covered 2 = 21-40% of the rake teeth covered 3 = 41-60% of the rake teeth covered 4 = 61-80% of the rake teeth covered 5 = 81-100% of the rake teeth covered PLANT DENSITY SUBSAMPLE 4 A rating assigned to the total amount of submersed vegetation retreived on the rake drag. Categories are used as follows: 0 = No vegetation 1 = 1-20% of the rake teeth covered 2 = 21-40% of the rake teeth covered 3 = 41-60% of the rake teeth covered 4 = 61-80% of the rake teeth covered 5 = 81-100% of the rake teeth covered PLANT DENSITY SUBSAMPLE 5 A rating assigned to the total amount of submersed vegetation retreived on the rake drag. Categories are used as follows: 0 = No vegetation 1 = 1-20% of the rake teeth covered 2 = 21-40% of the rake teeth covered 3 = 41-60% of the rake teeth covered 4 = 61-80% of the rake teeth covered 5 = 81-100% of the rake teeth covered PLANT DENSITY SUBSAMPLE 6 A rating assigned to the total amount of submersed vegetation retreived on the rake drag. Categories are used as follows: 0 = No vegetation 1 = 1-20% of the rake teeth covered 2 = 21-40% of the rake teeth covered 3 = 41-60% of the rake teeth covered 4 = 61-80% of the rake teeth covered 5 = 81-100% of the rake teeth covered SITE BATCH NUMBER Administrative field used to track keyed data batches. SPECIES CODE A code, based on the U.S. Department of Agriculture (USDA) PLANTS database (http://www.plants.usda.gov/plants), to identify the vegetation species for a particular record of data. Exceptions to the USDA PLANTS database include ALGA, LEMN, NLPW, NOAQVG, NOSMPL, and UNKN01. These are codes used by LTRMP to denote special situations (see table below). If the genus is known but not the species, then the first four letters of the genus are recorded with a "?" (question mark) inserted between the second and third letters (see CH?AR). The following are the most frequently used codes and the common name they represent: ALGA = algae CEDE4 = coontail coon's tail CH?AR = chara ECCR = barnyard grass ELCA7 = Canadian waterweed LEMI3 = small duckweed LEOR = rice cutgrass LETR = star duckweed LUPE5 = floating primrose-willow MYSP2 = Eurasian watermilfoil NAFL = nodding waternymph NAGU = southern waternymph NELU = American lotus NLPW = narrow-leaved pondweeds NOAQVG = no aquatic vegetation NOSMPL = No Sample NOTSP = Species Not Present NULU = yellow pond lily NYTU = white waterlily PHAR3 = reed canary grass POCO14 = pickerelweed POCR3 = curly pondweed PONO2 = longleaf pondweed POPE6 = sago pondweed POZO = flatstem pondweed SALA2 = broadleaf arrowhead SARI = stiff arrowhead SCFL = river bulrush SCVA = softstem bulrush SPEU = burreed SPPO = big duckweed UTMA = common bladderwort VAAM3 = wild celery WOCO = Columbian watermeal ZAPA = horned pondweed ZIAQ = wild rice ZODU = water stargrass VISUAL SUBSAMPLE 1 A code for presence/absence information of a species at the subsampling area. A "1" is recorded for a species found during visual observation of the subsampling area, otherwise the value is "0". VISUAL SUBSAMPLE 2 A code for presence/absence information of a species at the subsampling area. A "1" is recorded for a species found during visual observation of the subsampling area, otherwise the value is "0". VISUAL SUBSAMPLE 3 A code for presence/absence information of a species at the subsampling area. A "1" is recorded for a species found during visual observation of the subsampling area, otherwise the value is "0". VISUAL SUBSAMPLE 4 A code for presence/absence information of a species at the subsampling area. A "1" is recorded for a species found during visual observation of the subsampling area, otherwise the value is "0". VISUAL SUBSAMPLE 5 A code for presence/absence information of a species at the subsampling area. A "1" is recorded for a species found during visual observation of the subsampling area, otherwise the value is "0". VISUAL SUBSAMPLE 6 A code for presence/absence information of a species at the subsampling area. A "1" is recorded for a species found during visual observation of the subsampling area, otherwise the value is "0". RAKE SUBSAMPLE 1 A code for plant density measurements recorded for each submersed species found in the rake sample at the subsampling area. A "1" is recorded for a rooted floating leaf and emergent species, regardless of density, as long as the species was found in the rake sample. The submersed plant density categories are used as follows: 0 = Species not found in rake sample 1 = 1-20% of rake teeth covered 2 = 21-40% of rake teeth covered 3 = 41-60% of rake teeth covered 4 = 61-80% of rake teeth covered 5 = 81-100% of rake teeth covered RAKE SUBSAMPLE 2 A code for plant density measurements recorded for each submersed species found in the rake sample at the subsampling area. A "1" is recorded for a rooted floating leaf and emergent species, regardless of density, as long as the species was found in the rake sample. The submersed plant density categories are used as follows: 0 = Species not found in rake sample 1 = 1-20% of rake teeth covered 2 = 21-40% of rake teeth covered 3 = 41-60% of rake teeth covered 4 = 61-80% of rake teeth covered 5 = 81-100% of rake teeth covered RAKE SUBSAMPLE 3 A code for plant density measurements recorded for each submersed species found in the rake sample at the subsampling area. A "1" is recorded for a rooted floating leaf and emergent species, regardless of density, as long as the species was found in the rake sample. The submersed plant density categories are used as follows: 0 = Species not found in rake sample 1 = 1-20% of rake teeth covered 2 = 21-40% of rake teeth covered 3 = 41-60% of rake teeth covered 4 = 61-80% of rake teeth covered 5 = 81-100% of rake teeth covered RAKE SUBSAMPLE 4 A code for plant density measurements recorded for each submersed species found in the rake sample at the subsampling area. A "1" is recorded for a rooted floating leaf and emergent species, regardless of density, as long as the species was found in the rake sample. The submersed plant density categories are used as follows: 0 = Species not found in rake sample 1 = 1-20% of rake teeth covered 2 = 21-40% of rake teeth covered 3 = 41-60% of rake teeth covered 4 = 61-80% of rake teeth covered 5 = 81-100% of rake teeth covered RAKE SUBSAMPLE 5 A code for plant density measurements recorded for each submersed species found in the rake sample at the subsampling area. A "1" is recorded for a rooted floating leaf and emergent species, regardless of density, as long as the species was found in the rake sample. The submersed plant density categories are used as follows: 0 = Species not found in rake sample 1 = 1-20% of rake teeth covered 2 = 21-40% of rake teeth covered 3 = 41-60% of rake teeth covered 4 = 61-80% of rake teeth covered 5 = 81-100% of rake teeth covered RAKE SUBSAMPLE 6 A code for plant density measurements recorded for each submersed species found in the rake sample at the subsampling area. A "1" is recorded for a rooted floating leaf and emergent species, regardless of density, as long as the species was found in the rake sample. The submersed plant density categories are used as follows: 0 = Species not found in rake sample 1 = 1-20% of rake teeth covered 2 = 21-40% of rake teeth covered 3 = 41-60% of rake teeth covered 4 = 61-80% of rake teeth covered 5 = 81-100% of rake teeth covered ADDITIONAL SPECIES A code of "1" is recorded for a species that is present at the site (2m ring) but not within a subsampling area. Otherwise the box is left blank. SPECIES COVER The visually estimated percent cover, rated as in NONROOTED FLOATING COVER, for each rooted floating leaf and emergent species by site. The box is left blank for submersed and nonrooted floating leaf species. QE CODE A code used to qualify the field identification of the species collected. Valid codes are as follows: blank = as defined by table or USDA plants database 1 = hybrid of the species 2 = genus known, species suspected 3 = genus suspected 4 = unknown taxon VOUCHER A code denoting whether a voucher specimen was taken of the species. Categories are used as follows: blank = no voucher taken 1 = voucher taken, not sent for identification 2 = voucher taken, sent for identification SPECIES_COUNT Species count is the number of species recorded at the site and includes all species (submersed, rooted floating, free floating, emergent and filamentous algae)