Bird habitat surveys conducted in the Windmill Islands during 2002/03 and descriptive information of the terrestrial Environment in the Windmill Islands

Very little information is available on the geomorphology of areas surrounding Australian Antarctic stations. This type of information is generally collected during geological surveys. This metadata record gathers a range of descriptive geomorphological information of various nature:

-Habitat surveys were conducted in the season 2002-2003 in the Windmill Islands in parallel with bird nest mapping (reported in metadata record BIRDSCASEY0203) in order to study selection of nest sites by a range of species. Habitat was described in the survey sites searched for bird nests following various methods (described in BIRDSCASEY0203). Information is stored as GIS files (Arcview 3.2)
-polygon shapefile gathering all the geomorphological units.
-line shapefile describing habitat along transects used for searching bird nests
-polygon shapefile describing habitat in small 25*25m quadrats used for searching bird nests

-A collection of 1309 digital photos showing the sites searched for bird nests indexed by grid site number. Plus another set of 194 photos showing region of the Windmill Islands or bird nests more in detail
-A set of Digital Elevation Models (DEM) covering the entire Windmill Islands area generated separately for 18 regions.
-200m*200m grid created from the coverage of ice-free areas (Aerial photography 93-94) providing site numbers for the photographic database
-A series of Black and White aerial Photos (500 m, Zeiss, 1994) scanned at high resolution for the purpose of substrate study.

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:

Date
Boulderbig
Bouldsmall
Baresubst
Morsed
Scree
Snowcover
Permice
Slope
Aspect
Photonumber
Sitedotid
Comments

目前有关澳大利亚南极考察站周边区域地貌学的资料极为匮乏。此类信息通常通过地质调查工作采集。本元数据记录汇集了多类不同性质的描述性地貌学信息，具体如下：
- 2002-2003年科考季期间，研究团队在风车群岛（Windmill Islands）同步开展栖息地调查与鸟巢测绘工作（相关成果已收录于元数据记录BIRDSCASEY0203），以探究多个物种的巢址选择规律。调查参照BIRDSCASEY0203中记载的方法，对搜寻鸟巢的样地开展栖息地特征描述，相关信息以地理信息系统（Geographic Information System, GIS）文件（Arcview 3.2）格式存储。
- 收录全部地貌单元的多边形形状文件（polygon shapefile）。
- 描述沿鸟巢搜寻样线的栖息地特征的线状形状文件（line shapefile）。
- 用于鸟巢搜寻的25×25m小样方内栖息地特征的多边形形状文件（polygon shapefile）。
- 包含1309张标注有网格样地编号的鸟类搜寻样地实拍数码照片，另有194张用于详细展示风车群岛区域或鸟巢细节的数码照片。
- 覆盖整个风车群岛区域的数字高程模型（Digital Elevation Model, DEM），按18个区域分别独立生成。
- 基于1993-1994年航空摄影获取的无冰区覆盖范围，生成200m×200m网格，为照片数据库提供样地编号。
- 为开展基质研究，对1994年拍摄的蔡司（Zeiss）500m分辨率黑白航空照片进行了高分辨率扫描。

详细信息请参阅下载文件中的Word文档。本工作依托ASAC项目1219（ASAC_1219）完成。

本数据集包含以下字段：
日期（Date）、大型砾石（Boulderbig）、小型砾石（Bouldsmall）、裸露基质（Baresubst）、冰碛物（Morsed）、碎石坡（Scree）、积雪覆盖（Snowcover）、永久冰（Permice）、坡度（Slope）、坡向（Aspect）、照片编号（Photonumber）、样地编号（Sitedotid）、备注（Comments）