Brief description
This polygon spatial dataset describes the mangrove communities for Darwin Harbour and its environs and was surveyed at a mapping scale of 1:25 000. The associated report notes an area of approximately 20,400 hectares of mangroves in Darwin Harbour and describes ten main mangrove associations or communities.
The data provides a basis for identifying the extent and distribution of mangrove communities for Darwin Harbour and its environs.
Lineage
Maintenance and Update Frequency: notPlanned
Statement: Original map unit boundaries delineated from aerial photographs and stereoscope interpretation. Map units transferred to topographic map sheets via a mapograph. Original maps were hardcopy only. With the advent of geographic information systems polygons were digitised by rectifying the original hard copy maps.
Map unit boundaries derived using aerial photography and digital satellite imagery, geological and topographic data. Field data (site information) described and classified according to national standards at the time of capture.
Map unit polygons collected via geographic information system. (ESRI ArcInfo) Vegetation attributes attached to map units may be unique to individual surveys.
Statement: Data Dictionary
GEOMORPH Alias: Geomorphic Unit
A summary notation to describe the geomorphological unit for the veg map unit.
SURVEY_ID Alias: Survey Identifier
A department code that usually refers to the first five characters from the original survey site sheet.
SURVEY_NME Alias: Survey Name
The name of the survey / report that the mapping refers to.
TIDALLEVEL Alias: Tidal Level
A summary notation to describe the Tidal Level for the veg map unit.
VEG_DESC Alias: Vegetation Description
The vegetation description applicable only at the mapping scale 1:25 000.
VEG_TYPE Alias: Vegetation Broad Type
A broad classification used to group the veg map unit communities; Mangrove Closed Forests, Mangrove Open Forests, Mangrove Woodlands/Open Woodlands, Samphire/Salt Flat, Beach, Not Recorded.
VEG_UNIT Alias: Veg Map Unit
The vegetation mapping unit used to describe the vegetation community and label the polygon in the spatial dataset.
Notes
Credit
Data supplied by Department of Environment and Natural Resources. © Copyright Northern Territory of Australia