uid=MCM,o=EDI,dc=edirepository,dc=org all public read Algal and Moss Biomass in Reactivated Channel Diane McKnight diane.mcknight@colorado.edu https://orcid.org/0000-0002-4171-1533 McMurdo Dry Valleys LTER http://mcmlter.org/ 2015-01-15 English
As part of the Long Term Ecological Research (LTER) project in the McMurdo Dry Valleys of Antarctica, water was diverted to a relict stream channel in order to reactivate the streamflow. The purpose of this experiment was to quantify the time scales of response to the arrival of water after many years of dessication. This table contains data showing the chlorophyll, carbon, nitrogen, and hydrogen concentrations of algal communities and some mosses from the relict channel. The data constitutes the reactivated channel's algal and moss biomass data, along with measurements of the amount of carbon and nitrogen associated with algal mats for construction of nutrient budgets.
population dynamics LTER Core Areas
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https://mcm.lternet.edu/content/algal-and-moss-biomass-reactivated-channel Also referred to as 'RC Dev' Parent Stream: Harnish Creek Tributary, also known as Relict Channel 163.283615112305 163.283615112305 -77.631050109863 -77.631050109863 100 100 meter Parent Stream: Harnish Creek Tributary, also known as Relict Channel 163.294113159180 163.294113159180 -77.633735656738 -77.633735656738 130 130 meter "Coordinates are same as those for RC1H, but samples taken from stream rather than hyporheic zone." Parent Stream: Harnish Creek Tributary, also known as Relict Channel 163.285720825195 163.285720825195 -77.631942749023 -77.631942749023 110 110 meter "Coordinates are same as those for RC1, but samples taken from hyporheic zone rather than stream." Parent Stream: Harnish Creek Tributary, also known as Relict Channel 163.285720825195 163.285720825195 -77.631942749023 -77.631942749023 110 110 meter Parent Stream: Harnish Creek Tributary, also known as Relict Channel 163.281509399414 163.281509399414 -77.630149841309 -77.630149841309 98 98 meter Parent Stream: Harnish Creek Tributary, also known as Relict Channel 163.279418945313 163.279418945313 -77.628135681152 -77.628135681152 93 93 meter Parent Stream: Harnish Creek Tributary, also known as Relict Channel 163.268905639648 163.268905639648 -77.626571655273 -77.626571655273 85 85 meter Parent Stream: Harnish Creek Tributary, also known as Relict Channel 163.271011352539 163.271011352539 -77.624549865723 -77.624549865723 75 75 meter Parent Stream: Harnish Creek Tributary, also known as Relict Channel 163.279418945313 163.279418945313 -77.629028320313 -77.629028320313 96 96 meter 1995-01-23 1997-01-13 Data and metadata were migrated to the DEIMS system in 2015. Along, a new revision was entered to properly reflect date-ranges of the study and the egneral improvement of data related services. 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 and can be found in the McMurdo LTER data manager's home directory on INSTAAR's Unix system. Once submitted to INSTAAR, the data manager combined all of the stream biology files that included information for chlorophyll/biomass for the Relict Channel and removed any variables that had no direct influence. The resulting file is represented in the "relcbims.dat" file used on the web page. McMurdo Dry Valleys LTER http://mcmlter.org/ McMurdo Dry Valleys LTER http://mcmlter.org/ McMurdo Dry Valleys LTER
Within each transect, algal mats were visually identified as either orange, red, black, or green. Algal and moss samples were collected using a cork borer or a known area of substrate was scraped. Samples were stored in bottles until taken back to the lab for processing. Samples were filtered onto GF/C glass fiber filters. They were then extracted in buffered acetone and analyzed spectrophotometrically using the trichromatic method. Concentrations are reported in units of ug/cm2 for each pigment quantified (chlorophylls a, b, c, carotenoids, and phaeophyton). Carbon, hydrogen and nitrogen samples were air-dried (approximately 60 degrees C), then a weighed amount of algae was taken from the filter and analyzed on a Carlo Erba NA1500NCS element analyzer.
relcbims relcbims.csv 14478 1 0 \n column , " https://mcm.lternet.edu/sites/default/files/relcbims.csv DATASET_CODE Dataset code Code representing stream algal and moss biomass dataset string Code representing stream algal and moss biomass dataset LOCATION_CODE Location Code Abbreviated Location string Abbreviated Location DATE_TIME Date/time Date of sample date dd/mm/yyyy ALGAE TYPE Algae Type Type of algae invertebrate is associated with (red, black, green or orange) string Type of algae invertebrate is associated with (red, black, green or orange) REPLICATE # Replicate# Replication number of sample dimensionless real AREA SAMPLED (cm2) Area sampled cm2 Area from which sample was drawn squareCentimeters real Null None given CHL-A (mg/cm2) Chl a (microg/cm2) Concentration of chlorophyll a pigment microg/cm2 0.01 real Null None given CHL-B (mg/cm2) Chl b (microg/cm2) Concentration of chlorophyll b pigment microg/cm2 0.01 real Null None given CHL-C (mg/cm2) Chl c (microg/cm2) Concentration of chlorophyll c pigment microg/cm2 0.01 real Null None given CAROTENOIDS (mg/cm2) Carotenoids (microg/cm2) Concentration of carotenoid pigment microg/cm2 real Null None given PHAEPHYTON (mg/cm2) Phaeophyton (microg/cm2) Concentration of phaeophyton pigment microg/cm2 real Null None given % NITROGEN % Nitrogen Amount of nitrogen associated with algal mat - Percent dimensionless 0.01 real Null None given % Nitrogen Comments % Nitrogen Comments Comments regarding % nitrogen measurement string Comments regarding % nitrogen measurement % CARBON % Carbon Amount of carbon associated with algal mat dimensionless 0.01 real Null None given % Carbon Comments % Carbon Comments Comments regarding % carbon measurement string Comments regarding % carbon measurement % HYDROGEN % Hydrogen Amount of hydrogen associated with algal mat dimensionless 0.01 real Null None given % Hydrogen Comments % Hydrogen Comments Comments regarding % hydrogen measurement string Comments regarding % hydrogen measurement File name File name Original file name in which this information was submitted string Original file name in which this information was submitted