Data

Ningaloo Marine Park Drupella Long-term Monitoring Program

Australian Ocean Data Network
Armstrong, Shannon (Point of contact) Bancroft, Kevin (Point of contact) Chapman, Tamra (Point of contact) Coutts, Teresa (Point of contact) Halkyard, Brooke (Point of contact)
Viewed: [[ro.stat.viewed]] Cited: [[ro.stat.cited]] Accessed: [[ro.stat.accessed]]
ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rfr_id=info%3Asid%2FANDS&rft_id=https://catalogue.aodn.org.au:443/geonetwork/srv/api/records/516811d7-cc14-207a-e0440003ba8c79dd&rft.title=Ningaloo Marine Park Drupella Long-term Monitoring Program&rft.identifier=516811d7-cc14-207a-e0440003ba8c79dd&rft.publisher=Australian Ocean Data Network&rft.description=Between the mid 1980s and early 1990s, the feeding activity of unusually high densities of the corallivorous gastropod Drupella cornus resulted in massive coral damage along at least 100 km of Ningaloo Marine Park (NMP), with coral mortality approaching 100% at some areas. To date, the density of D. cornus, the area and severity of associated coral damage and longevity of the outbreak itself that occurred at NMP during this event was on a greater scale than recorded on other reefs elsewhere in the world. As coral communities are a key performance indicator of management of NMP and the Muiron Islands Marine Management Area (MIMMA) it is essential to keep a watching brief on spatial and temporal changes to Drupella densities and cover of associated corals in these conservation reserves. Adhering to this management need, the aim of the Ningaloo Marine Park Drupella Long-term Monitoring Program (NMPDMP), lead by the Department of Environment and Conservation, is to monitor long-term changes to the density of Drupella sp. and cover of associated coral communities at the NMP and the MIMMA. Monitoring of Drupella at NMP has resulted in a data set describing the status of Drupella populations and coral communities dating back to 1987. Between 1987 and 2006, the direction and amplitude of change in Drupella density and percent cover of live hard coral has varied considerably between locations. Overall however, relative to the outbreak densities recorded during the late 1980s and early 1990s, D. cornus densities have been low to moderate and have not greatly affected coral cover at the NMP and MIMMA. Survey data indicate that the current Drupella population represents no immediate threat to the coral communities at NMP or MIMMA.Maintenance and Update Frequency: unknownStatement: Original record compiled for the Western Australian Marine Science Institution (WAMSI), Project 3.8, 2008. Originally sourced from several databases compiled by WA DEC Marine Science Branch of projects relevant to the marine parks of WA. Variable metadata information was available.Statement: Large numbers of D. cornus were first observed at Ningaloo Reef in 1982 and later confirmed in 1985. In early 1987, large numbers of D. cornus were observed consuming hard corals at several locations along the then proposed NMP during a survey initiated by the Department of Conservation and Land Management 1 (CALM). In 1989, six long-term Drupella monitoring locations were established and surveyed by CALM. In 1991, these six locations were re-surveyed and seven new long-term Drupella monitoring locations were established by CALM. In 1994, all thirteen locations were re-surveyed by CALM. In 2005, an improved method for monitoring Drupella was developed using precision and cost benefit analyses and the thirteen locations were re-surveyed using the new method. Effort was made to ensure statistical comparability between the results generated by the old and new methods. The work in 2005 was undertaken by an honours student and funded by CALM. In 2006, four of the thirteen locations were resurveyed and six new Drupella long-term monitoring locations were established to represent the southern extension of the NMP and the gazettal of the MIMMA. As of 2006, the study has been led by the DEC’s Marine Science Program (MSP). There are now nineteen Drupella long-term monitoring locations, positioned approximately every 20 km along the NMP.&rft.creator=Anonymous&rft.date=2017&rft.coverage=westlimit=113.5; southlimit=-24; eastlimit=114.5; northlimit=-21.5&rft.coverage=westlimit=113.5; southlimit=-24; eastlimit=114.5; northlimit=-21.5&rft.coverage=uplimit=15; downlimit=0&rft.coverage=uplimit=15; downlimit=0&rft_rights=No Restrictions&rft_subject=biota&rft_subject=environment&rft_subject=oceans&rft_subject=Drupella cornus&rft_subject=24 200158&rft_subject=Corallivorous gastropod&rft_subject=MARINE ENVIRONMENT MONITORING&rft_subject=EARTH SCIENCE&rft_subject=OCEANS&rft_subject=Biosphere | Ecological Dynamics | Predation&rft_subject=MOLLUSKS&rft_subject=BIOLOGICAL CLASSIFICATION&rft_subject=ANIMALS/INVERTEBRATES&rft_subject=Marine Features (Australia) | Ningaloo Marine Park, WA&rft.type=dataset&rft.language=English Access the data
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Brief description

Between the mid 1980s and early 1990s, the feeding activity of unusually high densities of the corallivorous gastropod Drupella cornus resulted in massive coral damage along at least 100 km of Ningaloo Marine Park (NMP), with coral mortality approaching 100% at some areas. To date, the density of D. cornus, the area and severity of associated coral damage and longevity of the outbreak itself that occurred at NMP during this event was on a greater scale than recorded on other reefs elsewhere in the world. As coral communities are a key performance indicator of management of NMP and the Muiron Islands Marine Management Area (MIMMA) it is essential to keep a watching brief on spatial and temporal changes to Drupella densities and cover of associated corals in these conservation reserves. Adhering to this management need, the aim of the Ningaloo Marine Park Drupella Long-term Monitoring Program (NMPDMP), lead by the Department of Environment and Conservation, is to monitor long-term changes to the density of Drupella sp. and cover of associated coral communities at the NMP and the MIMMA. Monitoring of Drupella at NMP has resulted in a data set describing the status of Drupella populations and coral communities dating back to 1987. Between 1987 and 2006, the direction and amplitude of change in Drupella density and percent cover of live hard coral has varied considerably between locations. Overall however, relative to the outbreak densities recorded during the late 1980s and early 1990s, D. cornus densities have been low to moderate and have not greatly affected coral cover at the NMP and MIMMA. Survey data indicate that the current Drupella population represents no immediate threat to the coral communities at NMP or MIMMA.

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Maintenance and Update Frequency: unknown
Statement: Original record compiled for the Western Australian Marine Science Institution (WAMSI), Project 3.8, 2008. Originally sourced from several databases compiled by WA DEC Marine Science Branch of projects relevant to the marine parks of WA. Variable metadata information was available.
Statement: Large numbers of D. cornus were first observed at Ningaloo Reef in 1982 and later confirmed in 1985. In early 1987, large numbers of D. cornus were observed consuming hard corals at several locations along the then proposed NMP during a survey initiated by the Department of Conservation and Land Management 1 (CALM). In 1989, six long-term Drupella monitoring locations were established and surveyed by CALM. In 1991, these six locations were re-surveyed and seven new long-term Drupella monitoring locations were established by CALM. In 1994, all thirteen locations were re-surveyed by CALM. In 2005, an improved method for monitoring Drupella was developed using precision and cost benefit analyses and the thirteen locations were re-surveyed using the new method. Effort was made to ensure statistical comparability between the results generated by the old and new methods. The work in 2005 was undertaken by an honours student and funded by CALM. In 2006, four of the thirteen locations were resurveyed and six new Drupella long-term monitoring locations were established to represent the southern extension of the NMP and the gazettal of the MIMMA. As of 2006, the study has been led by the DEC’s Marine Science Program (MSP). There are now nineteen Drupella long-term monitoring locations, positioned approximately every 20 km along the NMP.

Notes

Credit
Shannon Armstrong: Dept of Environment and Conservation (DEC)

Modified: 06 2008

Data time period: 1987 to 2006

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114.5,-21.5 114.5,-24 113.5,-24 113.5,-21.5 114.5,-21.5

114,-22.75

text: westlimit=113.5; southlimit=-24; eastlimit=114.5; northlimit=-21.5

text: uplimit=15; downlimit=0

Subjects
24 200158 | ANIMALS/INVERTEBRATES | BIOLOGICAL CLASSIFICATION | Biosphere | Ecological Dynamics | Predation | Corallivorous gastropod | Drupella cornus | EARTH SCIENCE | Marine Environment Monitoring | Mollusks | Marine Features (Australia) | Ningaloo Marine Park, WA | OCEANS | biota | environment | oceans |

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  • global : 516811d7-cc14-207a-e0440003ba8c79dd
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