Data

Assessment of the effects of the 2004 coral bleaching event at Lihou Reef National Nature Reserve (Coral Sea) using towed video (Towvid)

Australian Institute of Marine Science
Australian Institute of Marine Science (AIMS)
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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://apps.aims.gov.au/metadata/view/a8c43a0c-3e5d-4371-9c49-e26df717ebae&rft.title=Assessment of the effects of the 2004 coral bleaching event at Lihou Reef National Nature Reserve (Coral Sea) using towed video (Towvid)&rft.identifier=https://apps.aims.gov.au/metadata/view/a8c43a0c-3e5d-4371-9c49-e26df717ebae&rft.publisher=Australian Institute of Marine Science (AIMS)&rft.description=Reefs in the Lihou Reef National Nature Reserve (NNR) were surveyed between 8-13 October 2004 in order to assess the effects of significant coral bleaching, which was observed during previous surveys in March 2004.A series of six video tows were conducted at depths between 45m and 60m, in the lagoon area of Lihou Reef NNR and also to the north of Anne Cay. A computer-based application, allowing keyboard classification was used to analyse the video tapes. Habitats were classified based on the substrata (3 categories) and overlying epibenthos (6 categories) viewed on the tapes. Towed underwater video (Towvid) was used to survey previously unsurveyed deeper waters of the Lihou Reef National Nature Reserve (NNR), for the presence of coral communities and to establish the extent of bleaching at depth. The Lihou Reef National Nature Reserve (NNR) is one of two protected areas in the Coral Sea region. The reserve is located in the Coral Sea 400 kilometres east of Townsville, Queensland. It was proclaimed on the 16th August 1982 under the National Parks and Wildlife Conservation Act 1975.The Coringa-Herald National Nature Reserve and Lihou Reef National Nature Reserve Management Plan states that both reserves are to be managed as strict nature reserves - World Conservation Union (IUCN) Category 1a - strict nature reserve. Such reserves are managed primarily to ensure habitats, ecosystems and native species are preserved in an undisturbed state as well as to facilitate research.Maintenance and Update Frequency: notPlannedStatement: Statement: Towed video (Towvid) surveys focused on depths below 30m and into the deeper waters of the lagoon (70m on the chart). A vane-mounted and winch-controlled towed colour video camera provided visual images of the benthos to a shipboard tape recorder that was also recording GPS data (true position (WGS84), ground speed, true heading, date and time) and depth from the ships sounder. A computer based application for recording substrate, benthos and individual organisms was linked to these instruments to facilitate real-time georeferencing of all data points. Spatial resolution was ~3m at a nominal tow speed of 3km/h. C-MapTM vector charts and MaxseaTM electronic navigation software were used to monitor and record the ship's track and the depth.Substrate and benthic categories employed for towed video to classify the habitats and individual organisms recognised:Substrate (abiotic substrate components):Coarse SandRubble (5-50mm)No substrateOverlying Epibenthos:Live Reef CoralsAlgae, DenseAlgae, MediumAlgae, SparseBurrowing Animals (Bioturbated Mud)No BenthosIndividual Organisms:NoneThe percentage cover of benthic communities was classified as follows:S - sparse (0 - 30% cover)M - medium (30 - 60%)D - dense (>60%)&rft.creator=Australian Institute of Marine Science (AIMS) &rft.date=2024&rft.coverage=westlimit=151.5495; southlimit=-17.5606; eastlimit=151.8938; northlimit=-17.366&rft.coverage=westlimit=151.5495; southlimit=-17.5606; eastlimit=151.8938; northlimit=-17.366&rft_rights= http://creativecommons.org/licenses/by-nc/3.0/au/&rft_rights=http://i.creativecommons.org/l/by-nc/3.0/au/88x31.png&rft_rights=WWW:LINK-1.0-http--related&rft_rights=License Graphic&rft_rights=Creative Commons Attribution-NonCommercial 3.0 Australia License&rft_rights=http://creativecommons.org/international/au/&rft_rights=WWW:LINK-1.0-http--related&rft_rights=WWW:LINK-1.0-http--related&rft_rights=License Text&rft_rights=Use Limitation: 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=Attribution: Format for citation of metadata sourced from Australian Institute of Marine Science (AIMS) in a list of reference is as follows: Australian Institute of Marine Science (AIMS). (2014). Assessment of the effects of the 2004 coral bleaching event at Lihou Reef National Nature Reserve (Coral Sea) using towed video (Towvid). https://apps.aims.gov.au/metadata/view/a8c43a0c-3e5d-4371-9c49-e26df717ebae, accessed[date-of-access].&rft_rights=Resource Usage:Use of the AIMS data is for not-for-profit applications only. All other users shall seek permission for use by contacting AIMS. Acknowledgements as prescribed must be clearly set out in the user's formal communications or publications.&rft_rights=Creative Commons Attribution-NonCommercial 3.0 Australia License http://creativecommons.org/licenses/by-nc/3.0/au&rft_subject=oceans&rft.type=dataset&rft.language=English Access the data
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Use Limitation: 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.

Attribution: Format for citation of metadata sourced from Australian Institute of Marine Science (AIMS) in a list of reference is as follows: "Australian Institute of Marine Science (AIMS). (2014). Assessment of the effects of the 2004 coral bleaching event at Lihou Reef National Nature Reserve (Coral Sea) using towed video (Towvid). https://apps.aims.gov.au/metadata/view/a8c43a0c-3e5d-4371-9c49-e26df717ebae, accessed[date-of-access]".

Resource Usage:Use of the AIMS data is for not-for-profit applications only. All other users shall seek permission for use by contacting AIMS. Acknowledgements as prescribed must be clearly set out in the user's formal communications or publications.

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Brief description

Reefs in the Lihou Reef National Nature Reserve (NNR) were surveyed between 8-13 October 2004 in order to assess the effects of significant coral bleaching, which was observed during previous surveys in March 2004.A series of six video tows were conducted at depths between 45m and 60m, in the lagoon area of Lihou Reef NNR and also to the north of Anne Cay. A computer-based application, allowing keyboard classification was used to analyse the video tapes. Habitats were classified based on the substrata (3 categories) and overlying epibenthos (6 categories) viewed on the tapes. Towed underwater video (Towvid) was used to survey previously unsurveyed deeper waters of the Lihou Reef National Nature Reserve (NNR), for the presence of coral communities and to establish the extent of bleaching at depth. The Lihou Reef National Nature Reserve (NNR) is one of two protected areas in the Coral Sea region. The reserve is located in the Coral Sea 400 kilometres east of Townsville, Queensland. It was proclaimed on the 16th August 1982 under the National Parks and Wildlife Conservation Act 1975.The Coringa-Herald National Nature Reserve and Lihou Reef National Nature Reserve Management Plan states that both reserves are to be managed as strict nature reserves - World Conservation Union (IUCN) Category 1a - strict nature reserve. Such reserves are managed primarily to ensure habitats, ecosystems and native species are preserved in an undisturbed state as well as to facilitate research.

Lineage

Maintenance and Update Frequency: notPlanned
Statement: Statement: Towed video (Towvid) surveys focused on depths below 30m and into the deeper waters of the lagoon (70m on the chart). A vane-mounted and winch-controlled towed colour video camera provided visual images of the benthos to a shipboard tape recorder that was also recording GPS data (true position (WGS84), ground speed, true heading, date and time) and depth from the ships sounder. A computer based application for recording substrate, benthos and individual organisms was linked to these instruments to facilitate real-time georeferencing of all data points. Spatial resolution was ~3m at a nominal tow speed of 3km/h. C-MapTM vector charts and MaxseaTM electronic navigation software were used to monitor and record the ship's track and the depth.Substrate and benthic categories employed for towed video to classify the habitats and individual organisms recognised:Substrate (abiotic substrate components):Coarse SandRubble (5-50mm)No substrateOverlying Epibenthos:Live Reef CoralsAlgae, DenseAlgae, MediumAlgae, SparseBurrowing Animals (Bioturbated Mud)No BenthosIndividual Organisms:NoneThe percentage cover of benthic communities was classified as follows:S - sparse (0 - 30% cover)M - medium (30 - 60%)D - dense (>60%)

Notes

Credit
Speare, Peter J, Mr (Principal Investigator)

Modified: 17 10 2024

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151.8938,-17.366 151.8938,-17.5606 151.5495,-17.5606 151.5495,-17.366 151.8938,-17.366

151.72165,-17.4633

text: westlimit=151.5495; southlimit=-17.5606; eastlimit=151.8938; northlimit=-17.366

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Other Information
An assessment of effects of a coral bleaching event at Lihou Reef National Nature Reserve, October 2004: Oxley WG, Emslie MJ, Osborne K and Speare PJ (2005) An assessment of effects of a coral bleaching event at Lihou Reef National Nature Reserve, October 2004. Australian Institute of Marine Science and Department of the Environment and Heritage. 38 p.

local : articleId=6954

global : e6a66520-e9b1-11dc-823c-00008a07204e

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  • global : a8c43a0c-3e5d-4371-9c49-e26df717ebae
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