Oyster Harbour (WA) Seagrass Cover 1988-2019
Aquatic flora surveys were conducted in Oyster Harbour between 1998 and 2019. Surveys were initially conducted in 1988, 1996 and 2016 by the WA Government Department of Water (described by 2013 "Synthesis of seagrass mapping studies"), and again in 2019 by the Department of Water and Environmental Regulation "Oyster Harbour Seagrass Survey - Cover (DWER-109)".
Data access is provided to the initial WA DoW surveys. See associated DWER record in Data WA catalogue for access to newer surveys.
Simple
Identification info
- Alternate title
- Oyster Harbour Seagrass Survey - Cover (DWER-109)
- Date (Revision)
- 2023-09-16
- Date (Publication)
- 2017-10-02
- Credit
- Department of Water and Environmental Regulation, Government of Western Australia.
- Status
- Completed
Point of contact
- Spatial representation type
- Vector
- Topic category
-
- Biota
Extent
Temporal extent
- Time position
- 1988-01-01T00:00:00
- Time position
- 2019-12-31T00:00:00
- 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
- AODN Instrument Vocabulary
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: Department of Water and Environmental Regulation, Western Australian Government (2020). Oyster Harbour (WA) Seagrass Cover 1988-2006. Data accessed at https://metadata.imas.utas.edu.au/geonetwork/srv/en/metadata.show?uuid=1D34BD8E-74B1-41EB-8F81-398539215527 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
Distributor
Distributor
- OnLine resource
-
SHAPE-ZIP
DATA ACCESS - 1988 survey of Oyster Harbour seagrass in Shapefile format.
- OnLine resource
-
SHAPE-ZIP
DATA ACCESS - 1996 survey of Oyster Harbour seagrass in Shapefile format.
- OnLine resource
-
SHAPE-ZIP
DATA ACCESS - 2006 survey of Oyster Harbour seagrass in Shapefile format.
- OnLine resource
-
seamap:SeamapAus_WA_seagrass_OysterHarbour_1988
MAP - Oyster Harbour seagrass (1988 survey)
- OnLine resource
-
seamap:SeamapAus_WA_seagrass_OysterHarbour_1996
MAP - Oyster Harbour seagrass (1996 survey)
- OnLine resource
-
seamap:SeamapAus_WA_seagrass_OysterHarbour_2006
MAP - Oyster Harbour seagrass (2006 survey)
- OnLine resource
-
seamap:SeamapAus_WA_seagrass_OysterHarbour_2016
MAP - Oyster Harbour seagrass (2016 survey)
- OnLine resource
- Related metadata record [Data WA catalogue]
Resource lineage
- Statement
- Survey years 1988, 1996 & 2006: High quality aerial photographs were obtained and interpreted to identify seagrass areas. Intersecting transects across these areas were used to ground truth density (percentage cover) and species composition of the seagrass habitats. The ground-truthing field work was undertaken by underwater video tows, shore transects, and spot dives and observations from a small punt or boat equipped with GPS tracking equipment. These areas were then digitised in ARC GIS. Limited resources and the methodology necessitated distributions and densities to be averaged over large areas. Seagrass distributions and changes in density may have been under or over represented in different parts of the harbour, making comparisons to previous surveys and estimations of change difficult. Survey year 2019: Oyster Harbour was surveyed in March 2019. Seagrass species distribution (Posidonia australis and Posidonia sinuousa) and cover (as percentage cover classes: 0, 75%) was recorded across 216 observations points across the estuary. The type of meadow (continuous or patchy), epiphytic cover on seagrass (as none, very low, low, medium, high or very high), and macroalgae cover (as percentage cover in categories: 0, 75%) were recorded at each site. At approximately a third of the sites, physical water profiles, secchi depth and euphotic depth were recorded.
- Hierarchy level
- Dataset
- Hierarchy level
- Dataset
Platform
Identifier
- Code
- research aeroplane
Instrument
Identifier
- Code
- cameras
- Maintenance and update frequency
- Not planned
- Maintenance note
- This metadata record has been created from the following record: http://acef.tern.org.au/geonetwork/srv/eng/metadata.show?uuid=1D34BD8E-74B1-41EB-8F81-398539215527 This was previously hosted by the Australian Coastal Ecosystems Facility (ACEF) of the Terrestrial Ecosystem Research Network (TERN).
Metadata
- Metadata identifier
- urn:uuid/1D34BD8E-74B1-41EB-8F81-398539215527
- 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/1D34BD8E-74B1-41EB-8F81-398539215527
Point of truth URL of this metadata record
- Date info (Creation)
- 2020-09-23T12:46:51
- Date info (Revision)
- 2023-10-17T09:03:58
Metadata standard
- Title
- ISO 19115-3:2018