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캐나다
Marine Conservation Targets (MCT) - Camera surveys of the subtidal flora of Nova Scotia and Southwest New Brunswick 2022-2023
To assess the current distribution of kelp beds and other macroalgae in Nova Scotia and Southwest New Brunswick, subtidal drop camera surveys were performed from 2022-2023 at 140 sites. For each site, a GoPro HERO 10 camera was towed along a deep (7-12m) and shallow (3-5m) depth contour until 20 images were acquired per depth. Where possible, species were identified from photos, with particular care given to kelps (defined here as orders Laminariales and Tilopteridales) and fucoids (order Fucales). Crust-forming algae was not counted. Percent cover was calculated using a 10x10 point grid overlaid on each image and recording the dominant cover type at each point. The depth (in meters) of each photo after correcting for tide height ranged from ~0.5m to ~12m. Depths were corrected to chart datum (lowest astronomical tide) using tide predictions from the nearest tide station, taken from tides.gc.ca. Sampling was performed between July and October. Cite this data as: Krumhansl K, Brooks C, Lowen B, DiBacco C, (2025). Camera Surveys of the Subtidal Flora of Nova Scotia and Southwest New Brunswick 2022-2023. Version 1.7. Fisheries and Oceans Canada. Samplingevent dataset. https://ipt.iobis.org/obiscanada/resource?r=camera_surveys_of_the_subtidal_flora_of_nova_scotia_2022-2023&v=1.7 For additional information please see: Krumhansl K.A., Brooks C.M., Lowen B., O’Brien J., Wong M., DiBacco C. Loss, resilience and recovery of kelp forests in a region of rapid ocean warming. Annals of Botany 2024 Mar 8; 133(1):73-92. Brooks C.M., Krumhansl K.A. 2023. First record of the Asian Antithamnion sparsum Tokida, 1932 (Ceramiales, Rhodophyta) in Nova Scotia, Canada. BioInvasions Records 12(3):745-725.
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Oceanic Shoals Marine Biodiversity Survey, Timor Sea (NERP Marine Biodiversity Hub, Theme 4, Project 1)
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Surveys were carried out in targeted shallow seabed environments within the proposed Oceanic Shoals Commonwealth Marine Reserve (CMR) in the Timor Sea. The survey concentrated on shelf habitats (Digital data collected:Navigation (AIMS)Navigation (Geoscience Australia)Multibeam bathymetry and backscatter (Geoscience Australia)Single-channel sub-bottom profiler along representative lines (Geoscience Australia)CTD fluorometer, transmissometer, altimeter, PAR/Irradiance, SPAR/Surface irradiance, (AIMS)Thermo-salinograph data (AIMS)Towed video and stills with USBL positioning (AIMS)Baited Remote Underwater Video Station video from BRUVS and SISSTAS deployments (AIMS and UWA)Biological sample stills (Geoscience Australia)Physical samples collected:Water samples (Geoscience Australia)Smith-McIntyre Grab sediment samples (Geoscience Australia)Shipek Grab sediment samples (Geoscience Australia)Benthic sled biological samples (AIMS and MGNT)Plankton samples using CPR (Geoscience Australia) This research was undertaken to:1. collect physical and biological samples and data to fill major knowledge gaps for the proposed Oceanic Shoals Commonwealth Marine Reserve (CMR) in the Timor Sea 2. analyse these data to gain an understanding of patterns of community assembly and associated physical drivers of marine biodiversity including connectivity in this region3. use national mapping and survey capacity to support further understanding of biodiversity in this region The Marine Biodiversity Survey of the proposed Oceanic Shoals Commonwealth Marine Reserve (CMR) in the Timor Sea was a research collaboration between the Australian Institute of Marine Science (AIMS), Geoscience Australia (GA), University of Western Australia (UWA) and the Museum & Art Gallery of the Northern Territory (MGNT). The survey was the main activity for the National Environmental Research Program (NERP) Marine Biodiversity Hub Theme 4: Regional Biodiversity Discovery to Support Marine Bioregional Plans. Data from this survey will be used to support the research goals of the other three themes in the Marine Biodiversity Hub and to support the work programs of the Department of the Sustainability, Environment, Water, Population and Communities (DSEWPaC).
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