Brief description
Distribution and abundance of seagrass, mangrove and saltmarsh in NSW estuaries. This dataset is ongoing. This record describes a snapshot of the data taken in February 2023 for use in the Seamap Australia project. A more recent version of the dataset may be available through the NSW DPI Fisheries Data Portal. This dataset supersedes https://metadata.imas.utas.edu.au/geonetwork/srv/eng/catalog.search#/metadata/281FAA64-F6F3-400C-A48F-D342E4ABCA83 (Estuarine macrophytes of NSW 2009) and https://metadata.imas.utas.edu.au/geonetwork/srv/eng/catalog.search#/metadata/021f65eb-38c6-4db2-9dbe-821b6b427780 (An Estuarine Inventory for NSW 1984).Lineage
Maintenance and Update Frequency: notPlanned
Statement: Data Collection Method: Aerial photography interpretation.
Data Set Source: The data has been prepared from Land and Property Information photo runs, Nearmap Aerial Imagery and and high-resolution imagery provided by AAM.
Source Material Input Scale: better than 1:25 000.
Processing Steps: Seagrass, mangrove and saltmarsh boundaries were captured using several methods, depending on age of mapping. Earliest mapping was digitised and edited in ArcGIS, habitat polygons were captured via onscreen digitizing in ArcGIS at a scale of 1:1500., more recent mapping is captured using Object Based image analysis. Mapping date and method are recorded with in the attribute table for each and every estuary. Polygons were validated in the field with DGPS, bathyscope, underwater video and side scan sonar. Boundary location and species identification were verified in the field. Families or in some case species of vegetation were mapped in the following categories:Posidonia australis Zosteraceae (including Zostera capricorni, Zostera muelleri and Heterozostera tasmanica), Halophila spp. Ruppia megacarpa, mangrove (Avicennia marina, Aegiceras corniculatum, and saltmarsh (all species combined). Area calculations were determined in ArcGIS. The layer topology was checked for gaps and overlaps. All polygons were checked for accurate class allocation. All polygons are topologically consistent.
Notes
PurposeThis data was captured as part of an ongoing mapping program for monitoring changes in the distribution and extent of seagrass, mangrove and saltmarsh in NSW estuaries. Full report available at http://www.dpi.nsw.gov.au/__data/assets/pdf_file/0004/306625/AE_2009_Output-1575_Creese-et-al_Habitat-Mapping-Final-Report-113_REPORT.pdf
Created: 11 02 2023
Data time period: 2000-01-01 to 2022-12-31
text: westlimit=149.8494; southlimit=-37.4708; eastlimit=153.5823; northlimit=-28.1685; projection=GDA94 / Geoscience Australia Lambert (EPSG:3112)
Subjects
ANGIOSPERMS (FLOWERING PLANTS) |
AQUATIC ECOSYSTEMS |
AQUATIC SCIENCES |
Australia |
BENTHIC HABITAT |
BIOLOGICAL CLASSIFICATION |
Biological Sciences |
BIOSPHERE |
Benthic habitat |
Biotic taxonomic identification |
COASTAL PROCESSES |
EARTH SCIENCE |
Ecology |
Environmental Science and Management |
Environmental Sciences |
ESTUARINE HABITAT |
Environmental Management |
Environmental Sciences Not Elsewhere Classified |
FISHERIES |
MANGROVES |
MARINE HABITAT |
MONOCOTS |
Marine and Estuarine Ecology (Incl. Marine Ichthyology) |
New South Wales |
OCEANS |
Other Environmental Sciences |
PLANTS |
SEAGRASS |
biota |
cameras |
environment |
macrophytes |
research aeroplane |
saltmarsh |
seagrass |
User Contributed Tags
Login to tag this record with meaningful keywords to make it easier to discover
Other Information
(Original metadata record [NSW DPI Fisheries Data Portal])
global : 4739e4b0-4dba-4ec5-b658-02c09f27ab9a
Identifiers
- global : 5d62676f-63d6-4282-9b23-ba1aedfc4fdd
