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Earth Science | Biosphere | Aquatic Ecosystems | Benthic Habitat

231 record(s)

 

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From 1 - 10 / 231

  • The reefs of east Torres Strait were surveyed in in January 2005, visiting 123 sites from the previous survey in 2002; density estimates for each species in the fishery were compared to previous surveys to calculate density trends. These surveys were designed to provide information on the stock status of fished species and recovery of depleted species. The results of the surveys showed that the three closed species, sandfish, black teatfish and surf redfish, had not recovered from their low densities observed in previous surveys. Sandfish density actually decreased to similar levels as in 1998, when the fishery was closed. While most of the decrease occurred in the juvenile sandfish population, the adult sandfish population had also declined since the previous survey in 2002. This result was quite unexpected given the relatively strong breeding cohort evident in 2002.

  • Coral reef survey of benthic cover, between northern Ningaloo and the Dampier Archipelago. The data include Benthic Cover (%) of benthic life forms on 25m transects, derived from point intercept data taken from transect images. Attributes: COLUMN_NAME COMMENTS YEAR_SAMPLED — Year that site was analysed for habitat cover SITE_ID — Site identifier (Site was photographed and analysed for habitat percent cover) REEF_NAME — Name of reef site is associated with FACIES — Used to describe the part of the reef that the site represents e.g. reef slope, reef flat NO_TAKE — Is the site in a non-fishing zone (based on Marine Park Zoning) or not (Y/N: Y => Non-Fishing Zone, N=>Site is fished) LAT — Site Latitude LON — Site Longitude BROADGROUP — Broadgroup classification of benthic cover SUBGROUP — Subgroup classification of benthic cover PERCENT_COVER — Percent cover of subgroup habitat for the site in the year sampled

  • Coral reef survey of target fish species and large grazing fish between northern Ningaloo and the Dampier Archipelago. The data include: * Fish UVC database - long transects 100x10m

  • Coral reef underwater visual census (UVC) survey of reef fish species between northern Ningaloo and the Dampier Archipelago. The data include: * Fish UVC database - short transects 25x5m: Fish Counts * Fish families excluding cryptic benthic groups eg gobies. Sharks and rays are included.

  • Pilbara Marine Conservation Partnership (PMCP) coral reef survey of benthic cover, between northern Ningaloo and the Dampier Archipelago. The data include: * Benthic Photographs * Digital still images of benthos taken along transects * Benthic cover database * Cover (%) of benthic life forms on 25m transects, derived from point intercept data taken from transect images. ---- The Pilbara Marine Conservation Partnership (PMCP) was an initiative designed to enhance the net conservation benefits of the globally-significant coral reef ecosystems of the Pilbara (Western Australia) by providing an assessment of the condition and trajectory of key ecological values. These assessments were designed to inform and complement existing governance and management arrangements and the PMCP is intended to provide ongoing advice and assessment for conservation efforts in the region, providing lasting benefits. The PMCP concept is based on three core ecological components, namely: Coral Reef Health - concentrating mainly on habitat forming primary producers. Fish and Sharks - their community structure, interactions and impacts on lower trophic levels. Environmental Pressures - physical and anthropogenic factors that influence the condition of reefs and associated biota.

  • Categories  

    This collection of Southern Hemisphere Deep-sea Corals consists of antipatherians (black corals), gorgonians (soft corals) and scleractinians (stony corals). This includes both live caught, sub-fossil and fossil material. Some samples date back to ca. 20,000 years before present; some of the un-dated material (based on work on samples sent to Californian Institute of Technology) are likely to be very much older. The collection is housed at CSIRO Marine Laboratories in Hobart, Tasmania.

  • Coral reef underwater visual census (UVC) survey of reef fish species between northern Ningaloo and the Dampier Archipelago. The data include: * Fish UVC database - short transects 25x5m: Biomass Estimate * Abundance and size of fish. * Fish families excluding cryptic benthic groups eg gobies. Sharks and rays are included.

  • Pilbara Marine Conservation Partnership (PMCP) coral reef survey of target fish species and large grazing fish between northern Ningaloo and the Dampier Archipelago. The data include: * Fish UVC database - long transects 100x10m * Abundance and size of fish. * Visual estimates of benthic cover and substratum * Fish families targeted by fishing, plus grazing taxa: Scaridae, Acanthuridae, Siganidae, Kyphosidae. Sharks and rays are included. ---- The Pilbara Marine Conservation Partnership (PMCP) was an initiative designed to enhance the net conservation benefits of the globally-significant coral reef ecosystems of the Pilbara (Western Australia) by providing an assessment of the condition and trajectory of key ecological values. These assessments were designed to inform and complement existing governance and management arrangements and the PMCP is intended to provide ongoing advice and assessment for conservation efforts in the region, providing lasting benefits. The PMCP concept is based on three core ecological components, namely: Coral Reef Health - concentrating mainly on habitat forming primary producers. Fish and Sharks - their community structure, interactions and impacts on lower trophic levels. Environmental Pressures - physical and anthropogenic factors that influence the condition of reefs and associated biota.

  • Pilbara Marine Conservation Partnership (PMCP) coral reef underwater visual census (UVC) survey of reef fish species between northern Ningaloo and the Dampier Archipelago. The data include: * Fish UVC database - short transects 25x5m * Abundance and size of fish. * Fish families excluding cryptic benthic groups eg gobies. Sharks and rays are included. ---- The Pilbara Marine Conservation Partnership (PMCP) was an initiative designed to enhance the net conservation benefits of the globally-significant coral reef ecosystems of the Pilbara (Western Australia) by providing an assessment of the condition and trajectory of key ecological values. These assessments were designed to inform and complement existing governance and management arrangements and the PMCP is intended to provide ongoing advice and assessment for conservation efforts in the region, providing lasting benefits. The PMCP concept is based on three core ecological components, namely: Coral Reef Health - concentrating mainly on habitat forming primary producers. Fish and Sharks - their community structure, interactions and impacts on lower trophic levels. Environmental Pressures - physical and anthropogenic factors that influence the condition of reefs and associated biota.

  • Coral reef survey of target fish species and large grazing fish between northern Ningaloo and the Dampier Archipelago. The data include: * Fish UVC database - long transects 100x10m - Fish Count Numbers