Pond diatom communities from the McMurdo Sound region of Antarctica, assessed from modern samples (2012-2016) and from historical samples collected during Shackleton’s Nimrod Expedition (1908-1909)

Summary

Abstract: 

We performed a field survey to characterize diatom communities living in the benthic microbial mats of ponds across the McMurdo Sound region of Antarctica. Samples were collected during the Austral summers of 2012-13, 2013-14, and 2015-16 from the McMurdo Dry Valleys, Cape Royds, and from Hut Ridge near McMurdo Station. We also characterized pond diatom communities in samples collected on various dates from 1908-1909 during Ernest Shackleton’s Nimrod Expedition to compare against modern samples. Historical samples were taken from Cape Royds and the Stranded Moraines, and were analyzed from slides stored at the Natural History Museum, London. This data package includes relative abundance data for diatom species found in these modern and historical samples.

Date Range: 

January 29, 1908 to January 4, 2016
Data Citation
Kohler, T.J., Cox, A., Darling, J., Howkins, A., Kopalová, K., Sokol, E.R., Gooseff, M.N., Mcknight, D.M. 2021. Pond diatom communities from the McMurdo Sound region of Antarctica, assessed from modern samples (2012-2016) and from historical samples collected during Shackleton’s Nimrod Expedition (1908-1909). Environmental Data Initiative. DOI: 10.6073/pasta/87ed680eb9a1283cea61a55e6bc6e96c. Dataset accessed 5 August 2021.
Dataset(s)

Variables (click to expand): 

DATASET_CODE
  • Label: Dataset code
  • Definition: Internal dataset code.
  • Type: Nominal
  • Missing values: None specified
SAMPLE_ID
  • Label: Sample ID
  • Definition: Identification code for the specific sample
  • Type: Nominal
  • Missing values: None specified
REGION
  • Label: Region
  • Definition: Indicates the broad geographic location that the sample originated from. Categories include the McMurdo Dry Valleys, Cape Royds, McMurdo Station, and the Stranded Moraines.
  • Type: Nominal
  • Missing values: None specified
SITE
  • Label: Site
  • Definition: Name of the waterbody that the sample originated from
  • Type: Nominal
  • Missing values: None specified
SITE_DESCRIPTION
  • Label: Site description
  • Definition: Description of the sample site including the pond name and other details
  • Type: Nominal
  • Missing values: None specified
PERIOD
  • Label: Period
  • Definition: Categorical value indicating whether the sample is modern or historical.
  • Type: Nominal
  • Missing values: None specified
TIMESPAN
  • Label: Timespan
  • Definition: The years (in the case of historical samples) or austral summer seasons (in the case of modern samples) in which the sample was collected.
  • Type: Nominal
  • Missing values: None specified
SAMPLE_DATE
  • Label: Sample Date
  • Definition: Date samples were taken. Exact dates are given for modern samples only.
  • Type: Date/time
  • Date format: mm/dd/yyyy
  • Missing values: None specified
SPECIES
  • Label: Species
  • Definition: Genus and species of the diatom.
  • Type: Nominal
  • Missing values: None specified
ABUNDANCE
  • Label: Relative abundance
  • Definition: Percent relative abundance for each species in the sample.
  • Type: Physical quantity
  • Unit: percent
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified

Short name: 

KOHLER_PDIATOM

Dataset ID: 

9038