strmalgi
English
utf8
dataset
McMurdo Dry Valleys LTER
http://mcmlter.org/
2015-01-20
ISO 19115-2 Geographic Information - North American Profile Metadata - Data with Biological Extensions
ISO 19115-2:2009(E)
Stream Algal Abundances
2015-01-20
publication
Diane McKnight
University of Colorado Boulder
http://www.colorado.edu/
diane.mcknight@colorado.edu
pointOfContact
documentDigital
As part of the Long Term Ecological Research (LTER) project in the McMurdo Dry Valleys of Antarctica, a systematic sampling program has been undertaken to monitor the abundance and species distribution of algal mats in glacial meltwater streams of the region. This table contains data showing the percent of total biomass (abundance) represented by algal type (brown, red, orange or green), phylum, species and morphotype for multiple streams, dates, and replications.
completed
McMurdo Dry Valleys LTER
http://mcmlter.org/
unknown
Data from this table was initially included in the raw data files specified under the variable for 'file name'. These are Microsoft Excel version 6.0 files. Once submitted to INSTAAR, the data manager combined all of the stream biology files that included variables for "abundance", and removed any variables that had no direct influence on the total biomass (abundance) of a given algal type, phylum, species, and morphotype. The resulting table is represented in the "strmalgi.dat" (ascii comma delimited format) and "strmalgi.txt" (MS-DOS text - table layout) files used on the web page. In November, 1999, the data manager added a field for stream transect ID code. This assisted in preparing the data for use in Oracle and ArcInfo. In July, 2000, the dataset code field was added in order to simplify generating links between different data and metadata fields.
population dynamics
theme
LTER Core Areas
English
Transect by Andersen Creek near Gage Moss Site M-01, H01Simm-G, H1 Transect 1 Points T011 and T012 mark the start and end of the transect. Start : IDs: 1ANDRSNT011 Ellipsoid: 23.73 ORTHOMETRIC HT (m) 78.97 End: ID: 1ANDRSNT012 Ellipsoid: 22.64 ORTHOMETRIC HT (m) 77.88 File provenance: strm-clg.txt
162.907409667969
162.906311035156
-77.622985839844
-77.622917175293
Transect by Canada Stream near Gage Moss Site M-03, F04Cana-G Transect 3 Points T031 and T032 mark the start and end of the transect. Start : IDs: 3CNGAGET031 Ellipsoid: 0.22 ORTHOMETRIC HT (m) 55.46 End: ID: 3CNGAGET032 Ellipsoid: -2.37 ORTHOMETRIC HT (m) 52.85 File provenance: strm-clg.txt
163.052688598633
163.050796508789
-77.613395690918
-77.613243103027
Transect by Canada Stream at Delta Moss Site M-04, F04Cana-D Transect 4 Points T041 and T042 mark the start and end of the transect. Start : IDs: 4CNDELTAT041 Ellipsoid: -30.52 ORTHOMETRIC HT (m) 24.72 End: ID: 4CNDELTAT042 Ellipsoid: -31.83 ORTHOMETRIC HT (m) 23.39 File provenance: strm-clg.txt
163.070114135742
163.069854736328
-77.614814758301
-77.614593505859
Transect by Von Guerard Stream at Upper Site Moss Site M-05 Transect 5 Points T051 and T052 mark the start and end of the transect. Start : IDs: 5VGUPPERT051 Ellipsoid: 114.08 ORTHOMETRIC HT (m) 169.27 End: ID: 5VGUPPERT052 Ellipsoid: 120.24 ORTHOMETRIC HT (m) 175.41 File provenance: strm-clg.txt
163.307327270508
163.305282592773
-77.634559631348
-77.634208679199
Transect by Von Guerard Stream at Lower Site Moss Site M-06 Transect 6 Points T061 and T062 mark the start and end of the transect. Start : IDs: 6VGLOWERT061 Ellipsoid: 33.99 ORTHOMETRIC HT (m) 89.19 End: ID: 6VGLOWERT062 Ellipsoid: 33.74 ORTHOMETRIC HT (m) 88.92 File provenance: strm-clg.txt
163.288482666016
163.287460327148
-77.619659423828
-77.619300842285
Transect by Delta Stream at Upper Site Moss Site M-07, F08Delt-U Transect 7 Points T071 and T072 mark the start and end of the transect. Start : IDs: 7DLTUPPERT071 Ellipsoid: 201.5 ORTHOMETRIC HT (m) 256.72 End: ID: 7DLTPPERT072 Ellipsoid: 201.53 ORTHOMETRIC HT (m) 256.73 File provenance: strm-clg.txt
163.099685668945
163.097671508789
-77.653213500977
-77.652854919434
Transect by Delta Stream at gage Moss Site M-08, F08Delt-G Transect 8 Points T081 and T082 mark the start and end of the transect. Start : IDs: 8DLTGAGET081, Ellipsoid: -23.45 ORTHOMETRIC HT (m) 31.78 End: ID: 8DLTGAGET082 Ellipsoid: -19.93 ORTHOMETRIC HT (m) 35.28 File provenance: strm-clg.txt
163.110809326172
163.108413696289
-77.625877380371
-77.625495910645
Transect by green Creek above gage Moss Site M-09, F09Green-G Transect 9 Points T091 and T092 mark the start and end of the transect. Start : IDs: 9GREENT091, Ellipsoid: -22.66 ORTHOMETRIC HT (m) 32.58 End: ID: 9GREENT092 Ellipsoid: -26.5 ORTHOMETRIC HT (m) 28.72 File provenance: strm-clg.txt
163.059310913086
163.058395385742
-77.624420166016
-77.623992919922
Transect by Bowles Creek near gage Moss Site M-10, F10Bowl-G Transect 10 Points T101 and T102 mark the start and end of the transect. Start : IDs: 10BOWLEST101, Ellipsoid: -25.54 ORTHOMETRIC HT (m) 29.7 End: ID: 10BOWLEST102 Ellipsoid: -24.01 ORTHOMETRIC HT (m) 31.24 File provenance: strm-clg.txt
163.057601928711
163.057083129883
-77.623336791992
-77.623100280762
Transect by Huey Creek near gage Moss Site M-11, F11Huey-G Transect 11 Points T111 and T112 mark the start and end of the transect. Start : IDs: 10BOWLEST111, Ellipsoid: -14.09 ORTHOMETRIC HT (m) 41.15 End: ID: 10BOWLEST112 Ellipsoid: -12.91 ORTHOMETRIC HT (m) 42.31 File provenance: strm-clg.txt
163.122741699219
163.121688842773
-77.602165222168
-77.601676940918
Transect by Von Guerard Stream at gage Moss Site M-12, F12Vong-G Transect 12 Points T121 and T122 mark the start and end of the transect. Start : IDs: 12VGGAGET121, Ellipsoid: -30.67 ORTHOMETRIC HT (m) 24.53 End: ID: 12VGGAGET122 Ellipsoid: -31.35 ORTHOMETRIC HT (m) 23.87 File provenance: strm-clg.txt
163.255294799805
163.253005981445
-77.609474182129
-77.609222412109
Moss Site 13 Transect 13 Points T131 and T132 mark the start and end of the transect. Start : IDs: 13PRISCUT131, Ellipsoid: 16.79 ORTHOMETRIC HT (m) 71.96 End: ID: 13PRISCUT132 Ellipsoid: 21.49 ORTHOMETRIC HT (m) 76.64 File provenance: strm-clg.txt
162.539794921875
162.537292480469
-77.696861267090
-77.696228027344
Transect by Lawson creek near gage Moss Site M-14, B14Laws-G Transect 14 Points T141 and T142 mark the start and end of the transect. Start : IDs: 14LAWSONT141, Ellipsoid: 24.08 ORTHOMETRIC HT (m) 79.13 End: ID: 14LAWSONT144 Ellipsoid: 30.05 ORTHOMETRIC HT (m) 85.08 File provenance: strm-clg.txt
162.268783569336
162.266586303711
-77.720619201660
-77.720359802246
Transect by Boehner Stream at lower site. B15Bohn-L Transect 15 Points T151 and T152 mark the start and end of the transect. Start : IDs: 15BOHNERT151 Ellipsoid: 74.57 ORTHOMETRIC HT (m) 129.74 End: ID: 15BOHNERT152 Ellipsoid: 70.17 ORTHOMETRIC HT (m) 125.32 File provenance: strm-clg.txt
162.563919067383
162.559936523438
-77.697700500488
-77.696968078613
Transect by Wharton Creek at Delta Moss Site M-16 Transect 16 Points T161 and T162 mark the start and end of the transect. Start : IDs: 16WHARTONT161 Ellipsoid: 24.1 ORTHOMETRIC HT (m) 79.31 End: ID: 16WHARTONT162 Ellipsoid: 23.61 ORTHOMETRIC HT (m) 78.82 File provenance: strm-clg.txt
162.746231079102
162.745101928711
-77.645057678223
-77.644943237305
ground condition
1994-01-01
1994-12-31
https://mcm.lternet.edu/sites/default/files/data/strmalgi.csv
strmalgi
eng; US
McMurdo Dry Valleys LTER
strmalgi
Record Delimiter : \r\n Number of Header Lines : 1 Number of Footer Lines : 0 Orientation : Column Quote Character :
"Field Delimiter : ,
false
Strmtrnsid
Code representing stream transect
Location
Stream location / name of transect in which measurements were made
DATE_TIME
Date of sample
Date Time Format: mm/dd/yyyy
Algae Type
Type of algae species is associated with (red, black, green or orange)
Replication
Replication number of sample
Transect
Transect ID for sample
Phylum
Algal phylum
Species
Algal species
Morphotype
Morphotype of species
Abundance
Percent of total biomass represented by algae type, phylum, species, morphotype
File name
Original file name in which this information was submitted
DBF
https://mcm.lternet.edu/sites/default/files/data/strmalgi.csv
dataset
Within each transect, algal mats were visually identified as either orange, red, black, or green. Not all types of algal mats were found within every transect. A maximum of five algal samples of each color were collected from each transect using a #13 cork borer (diameter = 17 mm, area = 227 mm2). Algal samples were preserved in 10% formalin for laboratory identifications. In all, 141 algal samples were collected from 12 streams. Preserved algal samples were examined in the laboratory to determine species composition and relative abundance using a Nikon Diaphot phase contrast microscope. Samples were well mixed to attain an even (random) sampling of mat (some small "clumps" of algae were still present, but these did not affect the objectives of the study), and then subsamples of 2 ml were withdrawn. Each subsample was placed in a 2-ml settling chamber with a 26 mm diameter and examined at x400 magnification. To get a representative count of relative species abundance, seven random fields (a total of 0.44 mm2) needed to be examined per subsample. Within each field, algae were identified to genus and species where possible (excluding diatoms, which were counted but not identified.) Percent cover was determined in each field by measuring the length and width of all specimens using an ocular micrometer. Cell "depth" was also measured in order to estimate biovolume. All seven fields were then tallied, and the percentage of the total algal biomass was determined for each taxa. Taxonomic identifications were primarily based on the classical Antarctic literature.
Metadata Access Constraints: none Metadata Use Constraints: none
annually
McMurdo Dry Valleys LTER
http://mcmlter.org/
pointOfContact