Data

Assessing the effects of changes in Great Barrier Reef Marine Park Zoning plans on southern mid-shelf shoals using towed video (Towvid) (MTSRF Project 4.8.2)

eAtlas
Speare, Peter J, Mr
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ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rfr_id=info%3Asid%2FANDS&rft_id=https://eatlas.org.au/data/uuid/3f1f6e1b-5b72-4b6c-88e3-4c047f646904&rft.title=Assessing the effects of changes in Great Barrier Reef Marine Park Zoning plans on southern mid-shelf shoals using towed video (Towvid) (MTSRF Project 4.8.2)&rft.identifier=https://eatlas.org.au/data/uuid/3f1f6e1b-5b72-4b6c-88e3-4c047f646904&rft.publisher=eAtlas&rft.description=Towed video (Towvid) surveys were undertaken in February/March 2007 and August/September 2007 on two pairs of discrete deepwater shoals in the mid-shelf section of the southern Great Barrier Reef. Within each pair, one shoal was from a 'green zone' (closed to all fishing) and the other from a 'blue zone' (open to fishing), based on the rezoning of the Great Barrier Reef Marine Park, carried out in 2004. The pairs of reefs chosen were: East Warregos (green) and West Warregos (blue); Barcoo Bank (green) and Karamea Bank (blue). A lightweight towed video system developed by AIMS was used to survey seabed habitats on and around the four shoal sites. The camera was deployed and towed from the stern of RV Cape Ferguson while maintaining a speed of approximately two to three knots. During camera deployment an observer used custom software developed for use with the towed video system to conduct a real-time seabed classification based on biotic and abiotic habitat components. The classification data was logged simultaneously with GPS position, depth sounder data and time. The resultant habitat observations were thus geo-referenced for later spatial analysis.Because of the spatial extent of the shoals, systematic survey of the entire shoals was not possible. The towed video survey did not attempt to quantify the spatial extent of the various habitats on the shoals, but was used only to identify areas of suitable habitat for the deployment of BRUVS (TM). These were identified as the areas at the base of the shoal where hard substratum was outcropping and areas on top of the shoal with rugged topography that were likely to be productive fish habitats.&rft.creator=Speare, Peter J, Mr &rft.date=2007&rft.coverage=northlimit=-22.643333; southlimit=-22.643333; westlimit=151.54; eastLimit=151.54&rft.coverage=northlimit=-22.643333; southlimit=-22.643333; westlimit=151.54; eastLimit=151.54&rft.coverage=northlimit=-22.826667; southlimit=-22.826667; westlimit=151.665; eastLimit=151.665&rft.coverage=northlimit=-22.826667; southlimit=-22.826667; westlimit=151.665; eastLimit=151.665&rft.coverage=northlimit=-24.116667; southlimit=-24.116667; westlimit=152.368333; eastLimit=152.368333&rft.coverage=northlimit=-24.116667; southlimit=-24.116667; westlimit=152.368333; eastLimit=152.368333&rft.coverage=northlimit=-24.048333; southlimit=-24.048333; westlimit=152.486667; eastLimit=152.486667&rft.coverage=northlimit=-24.048333; southlimit=-24.048333; westlimit=152.486667; eastLimit=152.486667&rft_rights=All AIMS data, products and services are provided as is and AIMS does not warrant their fitness for a particular purpose or non-infringement. While AIMS has made every reasonable effort to ensure high quality of the data, products and services, to the extent permitted by law the data, products and services are provided without any warranties of any kind, either expressed or implied, including without limitation any implied warranties of title, merchantability, and fitness for a particular purpose or non-infringement. AIMS make no representation or warranty that the data, products and services are accurate, complete, reliable or current. To the extent permitted by law, AIMS exclude all liability to any person arising directly or indirectly from the use of the data, products and services.&rft_rights=Ownership of all Intellectual Property Rights in the data remains with the Australian Institute of Marine Science (AIMS) and all use of the data must acknowledge AIMS.&rft_rights=All users of AIMS data must acknowledge the source of the material in the following manner: Data was sourced from the Australian Institute of Marine Science (AIMS).&rft_rights=Format for citation of data sourced from Australian Institute of Marine Science (AIMS) in a list of reference is as follows: Australian Institute of Marine Science. [year-of-data-download], [Title], [data-access-URL], accessed (date-of-access].&rft_rights=The data is under exclusive access period. Contact AIMS for possible access to the data within this period.&rft_subject=oceans&rft_subject=biota&rft_subject=environment&rft.type=dataset&rft.language=English Access the data
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All AIMS data, products and services are provided "as is" and AIMS does not warrant their fitness for a particular purpose or non-infringement. While AIMS has made every reasonable effort to ensure high quality of the data, products and services, to the extent permitted by law the data, products and services are provided without any warranties of any kind, either expressed or implied, including without limitation any implied warranties of title, merchantability, and fitness for a particular purpose or non-infringement. AIMS make no representation or warranty that the data, products and services are accurate, complete, reliable or current. To the extent permitted by law, AIMS exclude all liability to any person arising directly or indirectly from the use of the data, products and services.

Ownership of all Intellectual Property Rights in the data remains with the Australian Institute of Marine Science (AIMS) and all use of the data must acknowledge AIMS.

All users of AIMS data must acknowledge the source of the material in the following manner: "Data was sourced from the Australian Institute of Marine Science (AIMS)."

Format for citation of data sourced from Australian Institute of Marine Science (AIMS) in a list of reference is as follows: "Australian Institute of Marine Science. [year-of-data-download], [Title], [data-access-URL], accessed (date-of-access]".

The data is under exclusive access period. Contact AIMS for possible access to the data within this period.

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Brief description

Towed video (Towvid) surveys were undertaken in February/March 2007 and August/September 2007 on two pairs of discrete deepwater shoals in the mid-shelf section of the southern Great Barrier Reef. Within each pair, one shoal was from a 'green zone' (closed to all fishing) and the other from a 'blue zone' (open to fishing), based on the rezoning of the Great Barrier Reef Marine Park, carried out in 2004. The pairs of reefs chosen were: East Warregos (green) and West Warregos (blue); Barcoo Bank (green) and Karamea Bank (blue).

A lightweight towed video system developed by AIMS was used to survey seabed habitats on and around the four shoal sites. The camera was deployed and towed from the stern of RV Cape Ferguson while maintaining a speed of approximately two to three knots. During camera deployment an observer used custom software developed for use with the towed video system to conduct a real-time seabed classification based on biotic and abiotic habitat components. The classification data was logged simultaneously with GPS position, depth sounder data and time. The resultant habitat observations were thus geo-referenced for later spatial analysis.

Notes

Towed video surveys were undertaken to characterise the habitat on features identified from the digital terrain models produced from multibeam acoustic mapping, as likely productive fish habitat. This information was then used to determine placement of BRUVS (TM).
Speare, PJ: AIMS (Principal Investigator)
Stowar, MJ: AIMS
De'ath, AG: AIMS
Doherty, PJ: AIMS
Johansson, CL: AIMS
Venables, B: CSIRO

Lineage

Because of the spatial extent of the shoals, systematic survey of the entire shoals was not possible. The towed video survey did not attempt to quantify the spatial extent of the various habitats on the shoals, but was used only to identify areas of suitable habitat for the deployment of BRUVS (TM). These were identified as the areas at the base of the shoal where hard substratum was outcropping and areas on top of the shoal with rugged topography that were likely to be productive fish habitats.

Created: 20070720

Data time period: 03 02 2007 to 12 08 2007

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151.54,-22.64333

151.54,-22.643333

151.665,-22.82667

151.665,-22.826667

152.36833,-24.11667

152.368333,-24.116667

152.48667,-24.04833

152.486667,-24.048333

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biota | environment | oceans |

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