Juvenile Tiger Prawn Diet Data, Embley River 1993-1994

공공데이터포털

Two studies were carried out (October 1993 and March 1994) each lasting 24 hours, at one site in the Embley River, Gulf of Carpentaria. Juvenile prawn samples were collected every 2 hours by hand scoop or beam trawl in the river. Data were collected on gut fullness, moult stage, and prey type and number.

Embley River Prawn Predation Data 1993-1994

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Sampling was carried out in October 1993 and March 1994 to collect fish and juvenile prawns. Fish gut contents were examined. Sampling took place at two sites in the Embley River using gillnets, beach seines, rotenone, and beam trawls.

Gulf of Carpentaria Adult Prawn Data 1995

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Adult grooved tiger prawns (Penaeus semisulcatus) were caught in prawn trawls during one transect of the Gulf of Carpentaria on the FRV Southern Surveyor. The catches were used to assess offshore migration of the species. Data collected include length frequency, sex and gonad stage. Data were collected using 39 paired Florida Flyer trawls centred on 6nm grids across approximately 13 sites. The sites are spaced some distance apart along the cruise track (a transect from Weipa to N Groote and back to Weipa). The AusTED and standard codend were compared in these trawls, and the same data were also to be used monitor the distribution of Penaeus semisulcatus across the Gulf. Problem shots were retrawled when possible to meet the experimental design. Nine were abandoned due to lack of time.

Weipa Juvenile Prawn Data 1981-1982

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Sampling of juvenile prawns took place between 1981-1982. These samples were mainly taken from the Embley River and Albatross Bay region. Samples were collected using beam trawls, plankton nets and set nets. Data recorded include species and length frequency.

Weipa Juvenile Prawn Data 1986-1992

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Fortnightly sampling of juvenile prawns took place over six years (1986-1992). These samples were mainly taken from the Embley River and Albatross Bay, plus one set that were taken from the Wenlock and Archer Rivers. Samples were collected using beam trawls, plankton nets and set nets. Data recorded include species and length frequency. As part of this project, monthly temperature and salinity measurements were also taken from transects in the Embley River. These data are often referred to as the "Embley River Hydro Dataset".

Embley River Invertebrate and Fish Settlement Data 1993-1994

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Surveys of of post-larval and juvenile animals, mainly fish, prawn and other crustaceans, were carried out in 1993 and 1994. Samples were collected using artificial settlement units in the Embley River estuary, Gulf of Carpentaria.

Albatross Bay Adult Prawn Data 1986-1992

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Adult prawn species, size, sex, reproductive stage, moult stage, and parasites were measured at 20 stations in Albatross Bay, Gulf of Carpentaria. Sampling was carried out monthly, around the new moon period, between March 1986 and May 1992. The projects objectives were: - To carry out a trawl survey of prawn species distribution, size distribution, population density and reproductive status in the study area - To carry our sampling for larval prawns at selected stations. - To sample for phytoplankton species composition and chlorophyll a levels at selected stations.

MacArthur River Mines Prawn Data 1994-1996

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Beam trawl surveys of juvenile prawns were carried out between the Vanderlin Islands and Rosy Creek, Gulf of Carpentaria to investigate the impact of dredging by MacArthur River Mines.

Groote Eylandt Juvenile Prawn Data 1983-1989

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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.

Tropical Prawn Project Prawn Trawl Data c1975-1979 (Redfield Data)

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Prawn trawl data from Weipa, East and South East Gulf of Carpentaria in the late 1970s. The main objective was to ascertain the distribution and abundance of each of the main commercial and some non-commercial penaeid species. The main data collection was performed off the Judy B with cruises repeated every month for 13 months; some other vessels were involved at different times (Kalinda, Raptis Pearl, Sprightly). Trawling was conducted at night and consisting of 30 minute shots. All prawns were sorted by species (general codes used) and sex, but no weights were recorded. Catch rates were expressed as number of prawns caught per net per hour. There were more than four sampling plans.