Diane M. McKnight 2014-11-19 tabular digitial data McMurdo Dry Valleys LTER McMurdo Dry Valleys LTER 10.6073/pasta/aa47d6a36ccf7143bc28a10e6a0dcd59 https://mcm.lternet.edu/content/algae-ash-free-dry-mass-reactivated-channel 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 ash-free dry mass represented by algal type (brown-colored, red-colored, orange-colored, or green-colored, filamentous, sand, rock or moss) and incubation type (light, dark, or none) for the Relict Channel in the Fryxell basin. 1995-01-23 1997-01-15 ground condition Data from this table was initially included in the raw data files specified under the variable for 'file name'. These are Microsoft Excel version 5.0 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 Relict Channel files that included information for "ash-free dry mass", and removed any variables that had no direct influence on it. The resulting file is represented in the "afdmrlc.dat" file used on the web page. In October 1998, the data manager reviewed the values provided for location, and found that there was a lack of consistency among Relict Channel datasets that should contain corresponding location values. It was desirable to match locations from this dataset with those represented in the sampling points (eg. latitude, longitude, elevation, location name). Dev Niyogi and Mike Gooseff provided assistance in translating location values, as well as in specifying coordinates for the Relict Channel sample points. As a result, the following records had the original location name replaced with a location code: Relict channel site #1 RC1 Relic channel site #2 RC2 Relict channel site #2 RC2 Relic channel site #3 RC3 Relict channel site #3 RC3 Relic channel site #4 RC4 Relict channel site #4 RC4 Relict channel site #5 RC5 Relict channel site #6 RC6 Relict channel site #7 RC7. As needed Parent Stream: Harnish Creek Tributary, also known as Relict Channel 163.294113159180 163.294113159180 -77.633735656738 -77.633735656738 130m 130m 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 110m 110m 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 110m 110m meter Parent Stream: Harnish Creek Tributary, also known as Relict Channel 163.281509399414 163.281509399414 -77.630149841309 -77.630149841309 98m 98m meter Parent Stream: Harnish Creek Tributary, also known as Relict Channel 163.279418945313 163.279418945313 -77.628135681152 -77.628135681152 93m 93m meter Parent Stream: Harnish Creek Tributary, also known as Relict Channel 163.279418945313 163.279418945313 -77.629028320313 -77.629028320313 96m 96m meter Parent Stream: Harnish Creek Tributary, also known as Relict Channel 163.268905639648 163.268905639648 -77.626571655273 -77.626571655273 85m 85m meter Parent Stream: Harnish Creek Tributary, also known as Relict Channel 163.271011352539 163.271011352539 -77.624549865723 -77.624549865723 75m 75m meter LTER Core Areas population dynamics None <cntorg>McMurdo Dry Valleys LTER</cntorg> <onlink>http://mcmlter.org/</onlink> <span property="dc:title" content="McMurdo Dry Valleys LTER" class="rdf-meta element-hidden"></span> Not Applicable Not Applicable Field and/or Lab Methods 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 t ransect. A maximum of five algal samples of each color were collected from each transect using a #13 cork borer (diameter = 17 mm, area = 227 square mm). Algal samples were preserved in 10% formalin for laboratory identifications. A maximum of five additional algal samples of each color were collected for ash-free dry mass analyses. Moss samples were also collected using the same method as for algae samples. Samples for ash-free dry mass measurements were filtered through GF/C glass fiber filters and frozen. The samples were dried (100 degrees C) for 24 hours, weighed, ashed (450 degrees C) for 4 hours, rehydrated with water, dried for 24 hours, and reweighed. 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 t ransect. A maximum of five algal samples of each color were collected from each transect using a #13 cork borer (diameter = 17 mm, area = 227 square mm). Algal samples were preserved in 10% formalin for laboratory identifications. A maximum of five additional algal samples of each color were collected for ash-free dry mass analyses. Moss samples were also collected using the same method as for algae samples. Samples for ash-free dry mass measurements were filtered through GF/C glass fiber filters and frozen. The samples were dried (100 degrees C) for 24 hours, weighed, ashed (450 degrees C) for 4 hours, rehydrated with water, dried for 24 hours, and reweighed. unknown afdmrlc Dataset Code A code to Id the data entity The data provider A code to Id the data entity Location Code Abbreviated Location The data provider Abbreviated Location Date Date of sample The data provider calendar date/time mm/dd/YYYY gregorian calendar Algae Type Type of algae speciesis associated with (red, brown, green or orange) The data provider Type of algae speciesis associated with (red, brown, green or orange) Replicate # Replication number of sample The data provider Replication number of sample Incubation Type Environment where incubation occurred(light, dark or not applicable) The data provider Environment where incubation occurred(light, dark or not applicable) Incubation Time (h) Number of hoursspent incubating The data provider hour Area sampled (cm2) Area from which sample was drawn The data provider squareCentimeters AFDM (mg/cm2) Ash-free dry mass The data provider mg/cm2 Comments Comments regarding ash-free dry mass The data provider Comments regarding ash-free dry mass File Name Raw data file containing information The data provider Raw data file containing information McMurdo Dry Valleys LTER The data distributor shall not be liable for innacuracies in the content http 1 0 \n 1 column , https://mcm.lternet.edu/sites/default/files/afdmrlc.csv None 2014-11-19 2014-11-19 McMurdo Dry Valleys LTER http://mcmlter.org/ Biological Data Profile of the Content Standards for Digital Geospatial Metadata devised by the Federal Geographic Data Committee. 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