Date (Creation)

2023-09-28

Date (Revision)

2023-09-28

Date (Publication)

2023-09-28

Date (released)

2023-09-28

Edition

1.0

Unique resource identifier

https://doi.org/10.5285/8a885e6c-3a27-4cd7-850a-1ac1b9f89576

Codespace

doi

Unique resource identifier

GB/NERC/BAS/PDC/01778

Codespace

https://data.bas.ac.uk/

Other citation details

Please cite this item as: Peat, H. (2023). Mapping of the extent of vegetation patches on Leonie and Anchorage Islands in Ryder Bay, Antarctica in 2007 (Version 1.0) [Data set]. NERC EDS UK Polar Data Centre. https://doi.org/10.5285/8a885e6c-3a27-4cd7-850a-1ac1b9f89576

Credit

No credit.

Status

Completed

Point of contact

Organisation name	Individual name	Electronic mail address	Role
British Antarctic Survey	Peat, Helen		Author
NERC EDS UK Polar Data Centre		PDCServiceDesk@bas.ac.uk	Point of contact

Maintenance and update frequency

As needed

Maintenance note

Completed

Global Change Master Directory (GCMD) Science Keywords

• EARTH SCIENCE > Biosphere > Vegetation

Theme

• GPS

• vegetation

Place

• Leonie Island

• Anchorage Island

GEMET - INSPIRE themes, version 1.0

• Habitats and biotopes

Access constraints

Other restrictions

Other constraints

no limitations to public access

Access constraints

Other restrictions

Other constraints

no limitations

Use constraints

License

Other constraints

Open Government Licence v3.0

Use constraints

Other restrictions

Other constraints

Data released under Open Government Licence V3.0:

Use constraints

Other restrictions

Other constraints

No restrictions apply.

Unique resource identifier

url

Codespace

url

Association Type

Cross reference

Spatial representation type

Text, table

Language

English

Character set

UTF8

Topic category

• Biota

Begin date

2007-02-09

End date

2007-02-13

Supplemental Information

It is recommended that careful attention be paid to the contents of any data, and that the author be contacted with any questions regarding appropriate use. If you find any errors or omissions, please report them to polardatacentre@bas.ac.uk.

Title

European Petroleum Survey Group (EPSG) Geodetic Parameter Registry

Date (Publication)

2008-11-12

Cited responsible party

Organisation name	Individual name	Electronic mail address	Role
European Petroleum Survey Group		EPSGadministrator@iogp.org	Publisher

Unique resource identifier

urn:ogc:def:crs:EPSG::3031

Version

6.18.3

Hierarchy level

Dataset

Statement

Methodology:

Two islands in Ryder Bay, Leonie Island and Anchorage Island, were chosen as good locations to ground truth the NVDI ratios. Leonie Island is a very steep island, reaching 500 m in height and deglaciated on the North side. It has distinct patches of green vegetation including the flowering plants, Deschampsia antarctica and Colobanthus quitensis, and a variety of bryophyte species. These patches occur on cliff terraces, mainly at altitudes of less than 100 m. Anchorage Island, in contrast, has a maximum altitude of 54 m and is largely unvegetated at altitudes of less than 20 m, and lichen-covered at higher altitudes. It has much less green vegetation, with a couple of fairly small bryophyte-dominated patches (only 14 moss species and one liverwort species have been recorded there), and a single grass-dominated patch. The tops of the cliffs are lichen-covered predominantly by Usnea spp and Umbilicaria antarctica.

A hand-held Garmin GPS was used to do the ground truthing by walking round discrete patches of vegetation and saving the recorded track. Leonie Island was visited on 9th February 2007 when the deglaciated part of the Island was walked along and all large patches of reasonably continuous green vegetation were mapped. A few small patches (less than 10 m2) at high altitudes and difficult to access were ignored. One large discrete patch on particularly steep cliffs was difficult to walk round, so just the top edge of the patch was mapped. Anchorage Island was visited on 10th and 13th February 2007. Here, to enable the NVDI ratios of moss and lichen dominated areas to be compared, two discrete green patches of moss vegetation and two patches of lichen vegetation were mapped. The second of the lichen tracks included a small, disparate, area dominated by grasses, but no areas dominated by mosses. Finally, an area of algal vegetation on one of the beaches was mapped to see whether the remote sensing data was likely to pick up algal vegetation.

A Readme file is attached for additional information about start and end GPS positions, as well as information on the date and length of individual tracks.

Data collection:

Hand held Garmin GPS.

Data quality:

Readme:

For Track 4, the start and end positions in the Readme are the last recorded GPS positions in the .csv file.

For Track 6, the end coordinate in the Readme is the last recorded GPS position in the .csv file.

Data:

Could not get around all of Track 4: it extended down steep cliffs all the way to the sea. A few scattered patches also not surveyed high up towards scree cliffs.

Track 8 positions went a bit wide on one side of the edge of the patch due to fur seals.

Further mapping on Anchorage generally was curtailed due to blizzard conditions.

Metadata

File identifier

8a885e6c-3a27-4cd7-850a-1ac1b9f89576 XML

Metadata language

English

Character set

UTF8

Hierarchy level

Dataset

Hierarchy level name

dataset

Date stamp

2023-09-28

Metadata standard name

ISO 19115 Geographic Information - Metadata

Metadata standard version

ISO 19115:2003(E)

Metadata author

Organisation name	Individual name	Electronic mail address	Role
NERC EDS UK Polar Data Centre		polardatacentre@bas.ac.uk	Point of contact