A GIS dataset of bird nests mapped in the Windmill Islands by Frederique Olivier and Drew Lee during the 2002-2003 seasonEntry ID: BIRDSCASEY0203
Abstract: Very little information is known about the distribution and abundance of snow petrels at the regional scale. This dataset contains locations of bird nests, mostly snow petrels, mapped in the Windmill Islands during the 2002-2003 season. Location of nests were recorded with handheld GPS receivers connected to a pocket PC and stored as a shapefile using Arcpad (ESRI software). Descriptive ... information relating to each bird nest was recorded and a detailed description of data fields is provided in the detailed description of the shapefiles.
Two observers conducted the surveys using distinct methodologies, Frederique Olivier (FO) and Drew Lee (DL). Three separate nest location files (ArcView point shapefiles) were produced and correspond to each of the survey methodologies used. Methodology 1 was the use of 200*200 m grid squares in which exhaustive searches were conducted (FO). Methodology 2 was the use of 2 transects within each the 200*200 m grid squares; methodology 3 was the use of 4 small quadrats (ca 25 m) located within the 200*200m grid squares (DL). Nests mapped in a non-systematic manner (not following a specific methodology) are clearly identified within each dataset. Datasets were kept separate due to the uncertainties caused by GPS errors (the same nest may have different locations due to GPS error).
Three separate shapefiles describe survey methodologies:
- one polygon shapefile locates the 200*200 grid sites searched systematically (FO)
- one polygon shapefile locates the small quadrats (DL)
- one line shapefile locates line transects (DL)
Spatial characteristics, date of survey, search effort, number of nests found and other parameters are recorded for the grid sites, transect and quadrats.
See the word document in the file download for more information.
This work has been completed as part of ASAC project 1219 (ASAC_1219).
The fields in this dataset are:
Data Set Citation
Dataset Originator/Creator: Woehler, E.J., Lee, D. and Olivier, F.
Dataset Title: A GIS dataset of bird nests mapped in the Windmill Islands by Frederique Olivier and Drew Lee during the 2002-2003 season
Dataset Series Name: CAASM Metadata
Dataset Release Date: 2006-05-30
Dataset Publisher: Australian Antarctic Division
Dataset DOI: doi:10.4225/15/597fdcfb8bc50Online Resource: https://data.aad.gov.au/aadc/metadata/metadata_redirect.cfm?md=/AMD...
Start Date: 2002-11-12Stop Date: 2003-02-16
Latitude Resolution: 10 m
Longitude Resolution: 10 m
Quality Data were acquired with a Garmin 26 GPS receiver, the accuracy of which is better than an average handheld GPS model, such as the Garmin 12. In order not to overestimate the quality of the data, it is sensible to assume that nest locations were acquired with an uncertainty between 5 and 10 m.
Access Constraints The full dataset, including a word document providing further information about the dataset, is publicly available for download from the provided URL.
Also available for download from another URL is polygon data, derived from the point data by the Australian Antarctic Data Centre for displaying on maps. The data are a subset of the data available for downloading, the data with dataset id = 262.
Use Constraints This data set conforms to the PICCCBY Attribution License (http://creativecommons.org/licenses/by/3.0/).
Please follow instructions listed in the citation reference provided at http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=BIRDSCAS... when using these data.
Data Set Progress
Distribution Media: HTTP
Distribution Size: 382 kb
Distribution Format: shapefiles, ArcView 3.2, Word
Email: eric.woehler at gmail.com
Province or State: Tasmania
Postal Code: 7001
Province or State: Tasmania
Postal Code: 7000
Extended Metadata Properties
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Creation and Review Dates
DIF Creation Date: 2003-06-23
Last DIF Revision Date: 2017-08-23