Data Set Results

Operational taxonomic unit (OTU) table characterizing water track and adjacent soil microbial communities in Taylor Valley, Antarctica during the 2012-13 austral summer

This data package includes the abundance of microbial operational taxonomic units (OTUs) for samples collected during the austral summer of 2012-2013 in the Lake Hoare and Goldman Glacier Basins of Taylor Valley, Antarctica. A total of twenty samples from on- and off-water track soils were collected and analyzed. Samples were collected from the Lake Hoare Basin on 27 December 2012 and from the Goldman Glacier Basin on 4 January 2013.

Date Range:

2012-12-27 to 2013-01-04

Data sources:

SOILS_WT_OTU

DOI:

10.6073/pasta/a98c5ce00cc51d5424b07aebcfcf9f74

Dataset ID:

264

_Priscu Stream Gage Daily Averages

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 glacial meltwater streams in that region. These tables contain data pertaining to continuous monitored water quality and quantity parameters measured with automatic recording devices on streams in this region. In this document, we report metadata for the Priscu Stream gage daily averages hydrological recordings, which began in Dec 1993 and ended in Jan 2011.

Date Range:

1993-12-21 to 2013-01-16

Data sources:

PRISCU_DAILY_HYDRO

DOI:

10.6073/pasta/f625ec72538ef4612dd0db3a5fc76849

Dataset ID:

9123

_Priscu Stream Gage Measurements

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 glacial meltwater streams in that region. These tables contain data pertaining to continuous monitored water quality and quantity parameters measured with automatic recording devices on streams in this region. In this document, we report metadata for the Priscu Stream gage hydrological recordings, which began in Dec 1993 and ended in Jan 2011.

Date Range:

1993-12-06 to 2013-01-18

Data sources:

PRISCU_HYDRO

DOI:

10.6073/pasta/1567ace50621bb0cee76368c2b59b80a

Dataset ID:

9023

Microbial mat biomass, isotopes, and nutrient ratios sampled over a longitudinal gradient of two McMurdo Dry Valley streams

We performed a field survey to assess changes in biomass, nutrient ratios, and isotopic signatures of three different microbial mat types in two glacial meltwater streams in the McMurdo Dry Valleys, Antarctica. Samples were taken in January 2013 from pre-existing transects over Von Guerard Stream and the Relict Channel, and stretched from near the Von Guerard Glacier terminus to the stream outlets at Lake Fryxell.

Date Range:

2007-12-19 to 2013-01-20

Data sources:

STREAM_ISOTOPES_RCVG

Dataset ID:

9031

Soil Apatite Grain Weathering Metrics from Taylor Valley, Antarctica

Mineral apatite is the ultimate source of the essential nutrient phosphorus to the soil ecosystem. In order to assess the biogeochemical weathering of apatite grains in the dry, basic soils of the McMurdo Dry Valleys, we collected nine surface soil samples from the Fryxell and Bonney Basins of Taylor Valley. After separating more than 50 individual soil apatite grains from each sample, we used scanning electron microscopy to quantify the morphology and surface etching of apatite grains to determine the degree of weathering.

Date Range:

2013-01-18 to 2013-01-21

Data sources:

SOILS_APATITE

Dataset ID:

261

Garwood Ice Cliff Meteorological Station Daily Averages, 2012-

Date Range:

2012-01-10 to 2013-01-23

Data sources:

DOI:

10.6073/pasta/6fb20597ddc486efa4166e1b39186381

Dataset ID:

7119

Garwood Ice Cliff Meteorological Station Monthly Averages (2012-2013)

Date Range:

2012-01-01 to 2013-01-31

Data sources:

DOI:

10.6073/pasta/a7cacd156eec6d5f968936f1991a5101

Dataset ID:

7219

Stream Chemistry and Ion Concentrations

As part of the Long Term Ecological Research (LTER) project in the McMurdo Dry Valleys of Antarctica, a systematic aqueous geochemical sampling program has been undertaken. A series of terrestrial water samples have been collected and analyzed for major ion chemistry by ion chromatography. The concentrations of ions cover a wide range of total dissolved solids from the stream waters.

Date Range:

1993-01-01 to 2013-02-28

Data sources:

STREAM_CHEM

DOI:

10.6073/pasta/be9f781814330116f68844a8957962e4

Dataset ID:

Lake Vanda thermocline temperature time series

This data set includes the deployment of anchored thermistors Lake Vanda, Wright Valley, as part of an Antarctica New Zealand project. Thermistors were positioned at the sediment-water interface and 10 cm above the lake bottom within the thermocline at 24 m depth.

Date Range:

2013-12-08 to 2013-12-21

Data sources:

LVTemp

DOI:

10.6073/pasta/cd34c6d15f194a33d5f9217f58778f22

Dataset ID:

10002

2012-2013 Sub-ice Current Velocities Recorded with an Acoustic Doppler Current Profiler

Between 26 November 2012 and 22 January 2013, a SonTek Argonaut-XR 1.5 MHz Acoustic Doppler Current Profiler (ADCP) was fixed at the bottom of the Limno Sampling Hole in Lake Hoare, looking downward through the water column. Every 30 seconds, the ADCP measured horizontal and vertical current velocities in six, 50-cm-thick cells between 0.5 and 3.5 m below the lake ice. The observation interval became deeper over time as the ADCP platform melted into the lake ice and the lake ice thinned.

Date Range:

2012-01-01 to 2013-12-31

Data sources:

LIMNO_ANCILLARY_ADCP2

DOI:

10.6073/pasta/8d37c233ae7b4f39b8864c7310d87387

Dataset ID:

Limnological Chemistry, Ion Concentrations and Silicon

Date Range:

1993-01-01 to 2013-12-31

Data sources:

LIMNO_CHEMISTRY

DOI:

10.6073/pasta/2cbb9e62342bdf6118b20553be7b922f

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