Data Set Results

Geochemical flux on Commonwealth glacier

As part of a geochemical study of the Commonwealth Glacier in Taylor Valley, Antarctica, two 3-meter snow pits were dug in the accumulation zone and analyzed for major ions by ion chromatography. This dataset shows the mean annual atmospheric flux of chloride, sulfate, nitrate, and calcium to the Commonwealth Glacier. Determination of the atmospheric flux of these ions to the glacier surface aids in assessing the chemical composition of precipitation to the McMurdo Dry Valleys and the role of glaciers in the geochemical cycles of the region.

Date Range: 

2003-11-01

Data sources: 

GLACIER_COMMON_ION_FLUX

Locations: 

Commonwealth Glacier

DOI: 

10.6073/pasta/bc80756827152334c14f5579af95738b

Dataset ID: 

2015

Stable Isotope Data for Lake Chad

This micro data set contains stable isoptope data for water samples taken from Lake Chad. Although it is not part of the core monitoring program, it is potentially important.

Date Range: 

1994-01-03

Data sources: 

lakeistp

Locations: 

Lake Chad

DOI: 

10.6073/pasta/de57c711c50a7c82643c8640bcb2309b

Dataset ID: 

64

Soil Properties Effects on Soil Biota

Investigation of the effect of short-term variation in soil moisture and soil temperature on nematode anhydrobiosis as part of the McMurdo Dry Valleys Long Term Ecological Research (LTER) project. The percent of anhydrobiotic (coiled) nematodes with relation to soil moisture, temperature, and salinity was determined. The study began in the austral summer of 1996/1997.

Date Range: 

1997-01-01

Data sources: 

spwo

Locations: 

Biotic Effects Experiment Hoare Plot
Biotic Effects Experiment Fryxell Plot
Moss Sample 28 @ Canada Glacier ASPA

DOI: 

10.6073/pasta/dffe9cb5377497359b39cd226c8ea6a3

Dataset ID: 

248

Human Disturbances Effects on Chlorophyll-A

Concerns over environmental disturbance in the McMurdo Dry Valleys are increasing with increasing foot traffic from tourists and scientist. The effect of pedestrian disturbance was monitored by comparing the species composition, depth distribution and soil properties between adjacent high-, low- and no- traffic sites. This study began in the austral summer 1995/1996.

Date Range: 

1995-12-07

Data sources: 

9597dica

Locations: 

Biotic Effects Experiment Hoare Plot

DOI: 

10.6073/pasta/0af983a2ac7afdce4455e6fcc9a3cd70

Dataset ID: 

232

High Nutrient Influences on Soil Moisture

Investigation of the effect of penguins (high C and N inputs) on soil biota and soil properties was part of the McMurdo Dry Valleys Long Term Ecological Research (LTER) project. The moisture content of soil samples collected for organism extraction and identification was determined. Samples were gathered on December 5, 1997 from Cape Crozier.

Date Range: 

1997-12-05

Data sources: 

9712prso

Locations: 

Moss Sample 130 @ Cape Crozier

DOI: 

10.6073/pasta/51631df550f006d3d1a292cd521f0a58

Dataset ID: 

230

High Nutrient Influences on Soil Biota

Investigation of the effect of penguins (high C and N inputs) on soil biota was part of the McMurdo Dry Valleys Long Term Ecological Research (LTER) project. The number of soil organisms (nematodes, rotifers and tardigrades), divided by species, sex and maturity was monitored at Cape Crozier in order to accomplish this. Samples were gathered on December 5, 1997 from Cape Crozier.

Date Range: 

1997-12-05

Data sources: 

9712prwo

Locations: 

Moss Sample 130 @ Cape Crozier

DOI: 

10.6073/pasta/e5ec56ba721c4c01bbb8783439e63294

Dataset ID: 

231

Anhydrobiosis Soils Polygon Study

In the Antarctic Dry Valleys, soil polygons are prominent features of the landscape and may be key units for scaling local ecological information to the greater region. We examined polygon soils in each of the 3 basins of Taylor Valley, Antarctica. Our objectives were to characterize variability in soil biogeochemistry and biodiversity at local to regional scales, and to test the influence of soil properties upon invertebrate communities.

Date Range: 

1995-12-13

Data sources: 

SOILS_POLY_ANHYDRO

Locations: 

Anhydrobiosis Polygon at Bonney
Anhydrobiosis Polygon at Fryxell
Anhydrobiosis Polygon at Hoare

DOI: 

10.6073/pasta/264b3161fb4af164eb63b06f02e3de8a

Dataset ID: 

4005

Hyporheic sediment characteristics from Von Guerard Stream, Taylor Valley, McMurdo Dry Valleys, Antarctica in January 2019

In this data package, we present chlorophyll concentrations, percent loss-on-ignition organic matter, sorbed ammonium concentrations, and percent biogenic silica for hyporheic sediments collected in January 2019 from nine transects across Von Guerard Stream, Taylor Valley, Antarctica. These samples were collected to address questions about the retention and processing of particulate organic matter in the hyporheic zone of McMurdo Dry Valley streams.

Date Range: 

2019-01-10

Data sources: 

HZSEDS_CHEM

Locations: 

Von Guerard Stream at Transect M1
Von Guerard Stream at Transect M2
Von Guerard Stream at Transect M3
Von Guerard Stream at Transect P1
Von Guerard Stream at Transect P2
Von Guerard Stream at Transect P3
Von Guerard Stream at Transect R1
Von Guerard Stream at Transect R2
Von Guerard Stream at Transect R3

DOI: 

10.6073/pasta/3f76ccdf3d330df54aed1aee815dab23

Dataset ID: 

9033

Hyporheic diatom community assemblages from Von Guerard Stream, Taylor Valley, McMurdo Dry Valleys, Antarctica in January 2019

In this data package, we present diatom community assemblages from hyporheic sediments collected in January 2019 from six transects across Von Guerard Stream, Taylor Valley, Antarctica. These samples were collected to address questions about the retention and processing of particulate organic matter in the hyporheic zone of McMurdo Dry Valley streams. The six transects were located at pools, riffles, and meanders (three of each geomorphology type) along Von Guerard Stream and extended across the stream channel to the edges of the wetted zone, ranging from 6.6 to 13.6 m in length.

Date Range: 

2019-01-10

Data sources: 

Hyporheic zone sediment diatoms

Locations: 

Von Guerard Stream at Transect M1
Von Guerard Stream at Transect M3
Von Guerard Stream at Transect P1
Von Guerard Stream at Transect P3
Von Guerard Stream at Transect R1
Von Guerard Stream at Transect R3

DOI: 

10.6073/pasta/21650245acdf99704b4571b887fdeb2a

Dataset ID: 

9034