IMAS Metadata Catalogue
Wilson Inlet (WA) Seagrass 2007
Aquatic flora surveys were conducted in Wilson Inlet in 2007 and 2008. This data is part of the 2013 report "Synthesis of seagrass mapping studies" conducted by the Water Science Branch of the Department of Water.
The 2007 survey was conducted to review any changes in seagrass distribution since the previous survey in 1996 (data not included in this record), and was funded internally by the Water Science branch. The 2008 survey was conducted by the WA Department of Water together with Geoscience Australia. The objective of the 2008 survey was to collect baseline data on seagrass composition and distribution in key estuaries of southern and south-western WA.
This data was acquired by the ACEAS Seagrass Group as part of the 2013 Australia-wide risk assessment of Seagrass.
Surveys were conducted again in December 2017, April 2018, December 2019, December 2020, December 2021 and December 2022 by the Department of Water and Environmental Regulation as "Wilson Inlet Seagrass Survey".
The datasets making up the 2007-2008 Wilson Inlet seagrass survey data are:
WA_WilsonInlet_seagrass_polygons - polygon dataset showing interpolated percentage cover of seagrass with species information (where available).
This record provides access to the initial WA DoW surveys. See associated DWER records in Data WA catalogue for access to newer surveys at this site.
Simple
Identification info
- Date (Revision)
- 2023-09-16
- Date (Publication)
- 2017-10-02
- Credit
- Department of Water, Government of Western Australia.
- Status
- Completed
- Spatial representation type
- Vector
- Topic category
-
- Biota
Extent
))
Temporal extent
- Time position
- 2007-01-01T00:00:00
- Time position
- 2008-12-31T00:00:00
- Maintenance and update frequency
- Not planned
Resource format
- Title
- ESRI Shapefile
- Date
- Edition
- -
- GCMD Keywords, Version 8.5
- Region
-
- WESTERN AUSTRALIA
- Keywords (Theme)
-
- Benthic habitat
Resource specific usage
- Specific usage
- Data supplied for use by the Seamap Australia Project.
Resource constraints
- Classification
- Unclassified
Resource constraints
- Linkage
-
http://i.creativecommons.org/l/by/4.0/88x31.png
License Graphic
- Title
- Creative Commons Attribution 4.0 International License
- Website
-
http://creativecommons.org/licenses/by/4.0/
License Text
- Other constraints
- Cite data as: Wilson Inlet (WA) Seagrass 2007. Department of Water, Government of Western Australia (2013). Data accessed at https://metadata.imas.utas.edu.au/geonetwork/srv/en/metadata.show?uuid=D060C3CC-9F40-4FFF-B461-B79757595AC6 on (access date).
- Other constraints
- This dataset is hosted by the Institute for Marine and Antarctic Studies (IMAS), University of Tasmania, on behalf of the Western Australian Government for the purposes of the Seamap Australia collaborative project.
- Language
- English
- Character encoding
- UTF8
Content Information
- Content type
- Physical measurement
- Description
- Percentage cover of seagrass
Identifier
- Code
- Abundance of biota
- Identifier
- http://vocab.nerc.ac.uk/collection/P06/current/UPCT
- Name
- Percent
- Description
- Appended to original data for styling purposes for the Seamap Australia Project.
- Name
-
Benthic habitat
- Name
-
SM_HAB_CLS
Distribution Information
- Distribution format
-
-
ESRI Shapefile
-
ESRI Shapefile
- OnLine resource
-
Wilson Inlet seagrass polygons 2007-2008 [.shp download]
- OnLine resource
-
2013 Synthesis of seagrass mapping studies [report]
- OnLine resource
-
Associated surveys - seagrass survey - cover [Data WA catalogue]
Resource lineage
- Statement
- ---2007 survey-- The 2007 Wilson Inlet seagrass survey was conducted by snorkel tows along predetermined transects in the estuary. The transects were 200-300 m apart running perpendicular to the shoreline to the edge of the seagrass meadow (usually ending before the 3m depth limit). Coordinates were recorded along each transect together with percentage cover classes of seagrass. Seagrass density changes in Wilson inlet were mapped using ArcView. Spatial Analyst was used to create the distribution map of seagrass in the Inlet by interpolating density data between the points using the inverse distance weighted method. Given the basin type nature of the Inlet a cut-off boundary of seagrass was assumed using the 2 meter contour line of the Wilson Inlet bathymetry layer. Two meters was the reported depth limit of seagrass in the Inlet. This showed the central part of the basin to have no seagrass. ---2008 survey--- The 2008 survey was completed in November/December 2008 as a component of a Masters project by Maggie Tran with Geoscience Australia. The main objective of this survey was to characterise the benthos, of which submerged aquatic vegetation (seagrass) was a component/category. Assistance with seagrass identification and classification was provided by the Department of Water. Sites were preselected in a grid arrangement over the whole extent of the estuary. Three random sites North, East and South of the site were also surveyed. The distance between fixed and random sites was variable. Underwater video was deployed at each of the fixed and random sites in each estuary. Camera deployment at each of the sites captured data along transects, with the boat traveling into or with the prevailing winds to minimize movement of the boat and camera. Transects were between 2 and 4 minutes long and covered 50 to 100m at each of the random sites. Species composition and density (as percentage cover) were assessed in the field from the visual image obtained on the video along with other substrate categorization. All video transects were recorded for verification. Seagrass density changes in Wilson inlet were mapped by the Department of Water using ArcView. Spatial Analyst was used to create the distribution map of seagrass in the Inlet by interpolating density data between the points using the inverse distance weighted method. Given the basin type nature of the Inlet a cut-off boundary of seagrass was assumed as the maximum depth at which seagrass was recorded in the survey (3 m). This showed the central part of the basin to have no seagrass.
- Hierarchy level
- Dataset
- Hierarchy level
- Dataset
Platform
Identifier
- Code
- diver
- Maintenance and update frequency
- Not planned
- Maintenance note
- This metadata record has been created by the merging of the following two records: http://acef.tern.org.au/geonetwork/srv/eng/metadata.show?uuid=D060C3CC-9F40-4FFF-B461-B79757595AC6 http://acef.tern.org.au/geonetwork/srv/eng/metadata.show?uuid=7255AD99-10B7-4B1C-BE4F-5A36E7A475A9 These were previously hosted by the Australian Coastal Ecosystems Facility (ACEF) of the Terrestrial Ecosystem Research Network (TERN).
Metadata
- Metadata identifier
-
urn:uuid/D060C3CC-9F40-4FFF-B461-B79757595AC6
- Language
- English
- Character encoding
- UTF8
Point of contact
- Parent metadata
Type of resource
- Resource scope
- Dataset
- Metadata linkage
-
https://metadata.imas.utas.edu.au/geonetwork/srv/eng/catalog.search#/metadata/D060C3CC-9F40-4FFF-B461-B79757595AC6
Point of truth URL of this metadata record
- Date info (Creation)
- 2020-09-23T12:41:51
- Date info (Revision)
- 2025-04-30T12:24:36
Metadata standard
- Title
- ISO 19115-3:2018
Overviews
Spatial extent
Provided by
