The dataset comprises catch records of demersal fish and invertebrates from prawn trawl deployments completed on research voyage SS 03/2005. The survey design was a natural experiment (i.e. control-impact, but not before-after) to test the long-term, broadscale effects of prawn fishing on non-target species and habitats. Deployments were stratified by fishing intensity (three strata) and day/night. The survey was repeated in three regions: (a) north of Groote Eylandt, (b) north-east of the Vanderlins, and (c) north of Mornington Island. The number of deployments completed as part of the natural experiment was 124. Outside of the natural experiment, an additional 31 deployments were completed at dawn or dusk for diet analysis and an additional two deployments were completed for other reasons.

The dataset comprises sediment data for samples taken from box core deployments completed on research voyage SS 03/2005. The recorded sediment properties include gravel, sand, mud and carbonate content. The survey design was a natural experiment (i.e. control-impact, but not before-after) to test the long-term, broadscale effects of prawn fishing on non-target species and habitats. Deployments were stratified by fishing intensity (three strata) and day/night. The survey was repeated in three regions: (a) north of Groote Eylandt, (b) north-east of the Vanderlins, and (c) north of Mornington Island.

The dataset comprises catch records of infauna from box core deployments completed on research voyage SS 03/2005. The survey design was a natural experiment (i.e. control-impact, but not before-after) to test the long-term, broadscale effects of prawn fishing on non-target species and habitats. Deployments were stratified by fishing intensity (three strata) and day/night. The survey was repeated in three regions: (a) north of Groote Eylandt, (b) north-east of the Vanderlins, and (c) north of Mornington Island. The number of deployments completed as part of the natural experiment was 123.

This record describes the benthic assemblage survey data collected as part of the 1993-1996 South East Fishery Ecosystem Study undertaken by CSIRO Division of Fisheries. Benthic sled tows (c.4 per survey) were carried out at selected locations on transects across the continental shelf and in intensive survey areas in eastern Bass Strait, south-west Victoria, and south-west NSW waters. Data were collected in July 1993 (cruise SS 05/93), August 1994 (cruise SS 05/94), April 1996 (cruise SS 02/96) and November 1996 (cruise SS 06/96). Large collections of benthic invertebrates were identified and many photographed. As part of the analysis stage of the project, these assemblages wil be related to substrate characteristics on the one hand and fish faunal assemblages on the other.

This record is an overview entry for biological data collected on Southern Surveyor cruise SS 07/93. This cruise took place in the Gulf of Carpentaria and Northern Queensland waters during 17 October - 29 November, under the leadership of John Salini. Biological data collected on this cruise include samples from bycatch reduction device (BRD) prawn trawls and from environmentally friendly net (EFN) trawls. Clear video images of bottom structure and fish behaviour in the EFN codend were obtained. Dredge samples of bottom flora and fauna from the EFN sites and benthos from the footrope and in the trawl nets were also recorded as an indicator of bottom structure. Tissue samples from L. malabaricus and L. sebae were obtained and fish samples for the I. S. R. Munro Fish Collection in Hobart. Queensland museum staff collected 75 species of sponge from 21 fish trawls and some from dredges. Leiognathids were also obtained from 3 prawn trawls in Shelburne Bay. Please note: This metadata record is a preliminary entry derived from information in the cruise plan and/or cruise report. Individual data types - which may span several cruises - will be indexed separately within this metadata system in due course. - Biological Field Data Sheets recorded during this voyage have been scanned to PDF, and are available (to CSIRO Staff) on-line. See the details link under "Stored Media List" (below).

Seagrass aerial surveys were used to produce maps of the Groote Eylandt area. Samples of juvenile and sub-adult prawns were taken by beam trawl at Groote Eylandt, Blue Mud Bay and Sir Edward Pellew Islands under various sampling regimes between 1983 and 1989.

This record is an overview entry for biological data collected on Southern Surveyor cruise SS 03/93. This cruise took place in waters off southern Tasmania during 7-22 April 1993, under the leadership of Brian Griffiths. Biological data collected on this cruise include samples of demersal fish, midwater nekton and zooplankton to determine the vertical distribution and diurnal movements of these three groups, and samples for trophic analyses. Acoustic data for biomass estimates. Oceanographic samples to determine the vertical and horizontal distribution of biological properties of the water column. Please note: This metadata record is a preliminary entry derived from information in the cruise plan and/or cruise report. Individual data types - which may span several cruises - will be indexed separately within this metadata system in due course.

This record is an overview entry for biological data collected on Southern Surveyor cruise SS 04/91. This cruise took place in the North West Shelf during 12-30 September 1991, under the leadership of Wade Whitelaw. Biological data collected on this cruise include demersal fish and invertebrate samples from 105 stations, with up to 70 species being caught per 30 min trawl. Greatest diversity occurred at the shallower stations. Length frequency data for 14 species of fish (see taxonomy keywords) and otoliths for 4 of the main species (L. choerorynchus, S. undosquamis, N. furcosus and L. sebae) were collected. Numerous fish specimens were retained for further taxonomic identification and stock discrimination studies. Live berried scampi samples were obtained from 3 scampi trawls for larval rearing studies (UWA). 35 mm camera photography of 63 trawls including video photography of the last trawl to study the effects of the trawl on the benthos were obtained. Numerous whale sightings were also observed during the cruise and 3 hydrographic transects were completed with the submersible data logger (SDL). Please note: This metadata record is a preliminary entry derived from information in the cruise plan and/or cruise report. Individual data types - which may span several cruises - will be indexed separately within this metadata system in due course. - Biological Field Data Sheets recorded during this voyage have been scanned to PDF, and are available (to CSIRO Staff) on-line. See the details link under "Stored Media List" (below).

This record is an overview entry for biological data collected on Southern Surveyor cruise SS 05/95. This cruise took place in the Gulf of Carpentaria during 16-23 June 1995, under the leadership of John Salini. Biological data collected on this cruise include prawn and bycatch data from 39 paired prawn trawls. Penaeus semisulcatus samples for genetic and isotope analyses. Sediment samples. Water samples for primary productivity experiments. Leiognathids samples to complete sampling for a PhD study. Please note: This metadata record is a preliminary entry derived from information in the cruise plan and/or cruise report. Individual data types - which may span several cruises - will be indexed separately within this metadata system in due course.

Fishing event (e.g., day, time, location, catch effort), and associated biological data from the Standardized Inlet Survey component of the annual Sablefish Research and Assessment Survey on the British Columbia coast. Introduction DFO and the Canadian Sablefish Association undertake a collaborative fishery-independent annual research survey under a joint agreement. The survey employs longline trap gear to obtain catch rate data, gather biological samples, capture oceanographic measurements, and collect tag release and recapture data. Data summaries are provided here for standardized sets conducted at fixed stations within mainland inlets. The design of the sablefish survey has developed over time by incorporating and discontinuing components, including individual experimental studies (not available on OpenData). This Standardized Inlet Survey component differs in methodology from the other two survey components: (1) Offshore stratified random survey (2003 – present; available on OpenData using link below), and (2) Standardized trap survey – offshore indexing and offshore tagging (1990 – 2010; not yet available on OpenData). For the Standardized Inlet Survey, sets are allocated to five specific polygons in each of the following four inlet areas: Portland Inlet, Gil Island, Finlayson Channel, and Dean/Burke Channel. All four inlets were surveyed consistently between 2003 and 2019. No inlets were surveyed in 2020, and a single inlet was surveyed each year since 2021. Survey procedures are standardized and documented in Canadian Technical Reports of Fisheries and Aquatic sciences. Data tables provided for the Standardized Inlet Survey include (i) Effort, (ii) Catch, and (iii) Biological Information. Inlet Effort This table contains information about annual survey trips and fishing events (sets). Trip-level information includes the year the survey took place, a unique trip identifier, the vessel that conducted the survey and the trip start and end dates (the dates the vessel was away from the dock conducting the survey). Set-level information includes the inlet name, date, time, location and depth that fishing took place, soak time, and number of traps deployed. All successful fishing events are included, where successful sets are those that met survey design specifications. Inlet Catch This table contains the catch information from successful fishing events. Catch is identified to species or to the lowest taxonomic level possible. Catch is recorded as fish counts and / or weight. The unique trip identifier and set number are included so that catches can be related to the fishing event information (including capture location) for each set. Inlet Biological Information This table contains the biological data for sampled catches. Data may include any or all of length, weight, sex, maturity and age. Most of the sampled catch is Sablefish; however, some biological information has been collected for other species. Age structures are collected and are archived until required for analyses; therefore, all existing structures have not been aged. Tissue samples (usually a fin clip) may be collected for genetic (DNA) analysis for specific species. Tissue samples may be archived until required for analysis; for more information please see the data contacts. The unique trip identifier and set number are included so that samples can be related to the fishing event and catch information.