Data

Kelp habitat density and composition from underwater video

University of Tasmania, Australia

Shelamoff, Victor ; Lucieer, Vanessa ; Nau, Amy ; Ling, Scott ; Keane, John

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://metadata.imas.utas.edu.au/geonetwork/srv/eng/catalog.search#/metadata/a99cefff-dd6e-4afe-9102-37ab2bf0a8e5&rft.title=Kelp habitat density and composition from underwater video&rft.identifier=https://metadata.imas.utas.edu.au/geonetwork/srv/eng/catalog.search#/metadata/a99cefff-dd6e-4afe-9102-37ab2bf0a8e5&rft.description=Annotations of canopy forming seaweed derived from towed video at selected key abalone blocks along the east coast of Tasmania. The purpose of the study was to examine the patch dynamics of seaweeds and urchin barrens and to provide validation for the identification of urchin barrens from multibeam surveys.Maintenance and Update Frequency: none-plannedStatement: Towed underwater video was collected at selected key abalone blocks along the east coast of Tasmania (Blocks 22/23 –Tasman, Block 24 - Maria, Block 27 - Freycinet, Blocks - 29/30 St Helens). These blocks were chosen as prior diver and towed-video surveys revealed highly variable urchin densities and overgrazing impacts ranging from small metre-scale incipient barrens up to larger barrens features up to ~100s m in length. The video footage was annotated at the scale of individual kelp patches, whereby the start and end-point of individual patches were recorded as precisely as possible with the assistance of Biigle video analysis software (https://biigle.de/). The different kelp patches were categorised based on the canopy species and the overall percentage cover of the canopy (sparse = 0-20% cover, middle= 20-60%, dense=60-100% cover). Eck= Ecklonia radiata, Phyll = Phyllospora comoasa, Cys= Cystophora sp. Other = all other canopy species, bare= completely bare reef. These annotations were then matched to GPS coordinates collected from a transponder mounted to the camera platform.&rft.creator=Shelamoff, Victor &rft.creator=Lucieer, Vanessa &rft.creator=Nau, Amy &rft.creator=Ling, Scott &rft.creator=Keane, John &rft.date=2015&rft.coverage=westlimit=147.94482421875; southlimit=-43.277626491593836; eastlimit=148.64794921874997; northlimit=-41.2219018461296&rft.coverage=westlimit=147.94482421875; southlimit=-43.277626491593836; eastlimit=148.64794921874997; northlimit=-41.2219018461296&rft.coverage=uplimit=25; downlimit=0&rft.coverage=uplimit=25; downlimit=0&rft_rights=Creative Commons Attribution 4.0 International License https://creativecommons.org/licenses/by/4.0/&rft_rights=Cite data as: Shelamoff, V. Lucieer, V. Keane, J. Lau, A. Ling, S. (2021). Kelp habitat density and composition from underwater video. Institute for Marine and Antarctic Studies (IMAS), University of Tasmania (UTAS). Data accessed from https://metadata.imas.utas.edu.au/geonetwork/srv/eng/catalog.search#/metadata/a99cefff-dd6e-4afe-9102-37ab2bf0a8e5 on [access date]&rft_rights=The data described in this record are the intellectual property of the University of Tasmania through the Institute for Marine and Antarctic Studies.&rft_subject=biota&rft_subject=multi-beam validation&rft_subject=video survey&rft_subject=Centrostephanus rogersii&rft_subject=Haliotis rubra&rft_subject=Ecklonia radiata&rft_subject=Phyllospora comosa&rft_subject=EARTH SCIENCE | BIOLOGICAL CLASSIFICATION | PLANTS | MACROALGAE (SEAWEEDS)&rft_subject=EARTH SCIENCE | BIOLOGICAL CLASSIFICATION | ANIMALS/INVERTEBRATES | ECHINODERMS | SEA URCHINS&rft_subject=Marine and Estuarine Ecology (incl. Marine Ichthyology)&rft_subject=BIOLOGICAL SCIENCES&rft_subject=ECOLOGY&rft_subject=Ecosystem Function&rft_subject=ENVIRONMENTAL SCIENCES&rft_subject=ECOLOGICAL APPLICATIONS&rft_subject=unmanned autonomous underwater vehicle&rft_subject=Biotic taxonomic identification&rft_subject=Abundance of biota&rft.type=dataset&rft.language=English Access the data

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Creative Commons Attribution 4.0 International License
https://creativecommons.org/licenses/by/4.0/

Cite data as: Shelamoff, V. Lucieer, V. Keane, J. Lau, A. Ling, S. (2021). Kelp habitat density and composition from underwater video. Institute for Marine and Antarctic Studies (IMAS), University of Tasmania (UTAS). Data accessed from https://metadata.imas.utas.edu.au/geonetwork/srv/eng/catalog.search#/metadata/a99cefff-dd6e-4afe-9102-37ab2bf0a8e5 on [access date]

The data described in this record are the intellectual property of the University of Tasmania through the Institute for Marine and Antarctic Studies.

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Full description

Annotations of canopy forming seaweed derived from towed video at selected key abalone blocks along the east coast of Tasmania. The purpose of the study was to examine the patch dynamics of seaweeds and urchin barrens and to provide validation for the identification of urchin barrens from multibeam surveys.

Lineage

Maintenance and Update Frequency: none-planned

Statement: Towed underwater video was collected at selected key abalone blocks along the east coast of Tasmania (Blocks 22/23 –Tasman, Block 24 - Maria, Block 27 - Freycinet, Blocks - 29/30 St Helens). These blocks were chosen as prior diver and towed-video surveys revealed highly variable urchin densities and overgrazing impacts ranging from small metre-scale incipient barrens up to larger barrens features up to ~100s m in length. The video footage was annotated at the scale of individual kelp patches, whereby the start and end-point of individual patches were recorded as precisely as possible with the assistance of Biigle video analysis software (https://biigle.de/). The different kelp patches were categorised based on the canopy species and the overall percentage cover of the canopy (sparse = 0-20% cover, middle= 20-60%, dense=60-100% cover). Eck= Ecklonia radiata, Phyll = Phyllospora comoasa, Cys= Cystophora sp. Other = all other canopy species, bare= completely bare reef. These annotations were then matched to GPS coordinates collected from a transponder mounted to the camera platform.

Notes

Credit
Abalone Industry Re-investment Fund (AIRF)

Credit
Tasmanian Climate Change Office

Credit
Sustainable Marine Research Collaboration Agreement (SMRCA)

Data time period: 2020-10-31 to 2021-04-23

This dataset is part of a larger collection

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text: westlimit=147.94482421875; southlimit=-43.277626491593836; eastlimit=148.64794921874997; northlimit=-41.2219018461296

text: uplimit=25; downlimit=0

Subjects

User Contributed Tags

Other Information

DATA ACCESS - urchin barren density from annotated video [Shapefile download] (SHAPE-ZIP)

url : https://geoserver.imas.utas.edu.au/geoserver/imas/wfs?version=1.0.0&request=GetFeature&typeName=AbHab_kelp_scored_video&outputFormat=SHAPE-ZIP External Link

MAP - urchin barren density from annotated video (imas:AbHab_kelp_scored_video)

url : https://geoserver.imas.utas.edu.au/geoserver/wms External Link

global : de61f7c0-41bb-47bf-895a-7ff958689657

Identifiers

global : a99cefff-dd6e-4afe-9102-37ab2bf0a8e5