This data was collected to obtain base information for prawn management advice. Data were collated by 6 nm grid squares species, sex and size distribution (carapace length) of prawns in the commercial catch 1988 - 1990 inclusive. Also collated were turtle distribution in catches in 1989. All samples were taken and processed by CSIRO trained commercial trawl boat crews and presumably all samples were taken from areas of high abundance at that time. The fishing times over this period were 15 April to 22 June and about 1 August to 30 November.

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.

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.

In the early 1980s, the New York State Department of Environmental Conservation (NYSDEC) began the development of a fishery-independent trawl survey program to monitor and assess local populations of weakfish (Cynoscion regalis) in the Peconic Estuary. The project was initiated based on the research recommendations of the Atlantic States Marine Fisheries Commission’s (ASMFC) Fishery Management Plan for Weakfish (Mercer, 1985). Gear and methodology for this survey were finally standardized in 1987 after 3 years of trials, and the official dataset for this survey begins in 1987. The initial intent of the survey was to develop an annual index of recruitment of juvenile weakfish and determine the relationship between spawning stock and environmental factors on year-class strength for weakfish. Although this survey was designed to study juvenile weakfish, due to the diverse number of species in the Peconic Estuary, data collection was expanded to include identifying and measuring all species of fish, as well as squid, horseshoe crabs, and mantis shrimp. Species of macroinvertebrates are identified and counted (Weber, Grahn, and Havens, 1998). As of 2019, certain macroinvertebrates (calico crabs and whelk species) are being measured as well to provide more data in efforts towards conservation and management of those species. While many of the species encountered in the trawl may not themselves be directly important to New York’s recreational and commercial fisheries, some of these species are significant as forage or bait species (e.g. Anchovies, Herring, Silversides), as well as providing insight into the ecological relationships among these species and their significance as indicators of the health and well-being of this important estuary. The catch per unit effort (CPUE) measures the quantity of fish caught during one tow of the trawl. This is used to estimate the abundance of fish in a population. This dataset includes the average CPUE by species and year.

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.

This dataset was collected mainly to provide banana prawn length-frequency data by undertaking size sampling of commercial catches of banana prawns (P merguiensis). The aim was to calculate optimal seasonal opening dates for the commercial fishery and to provide other management advice. Length-frequency data for other prawn species was also provided.

The objectives of this project were: To design and implement a survey program to augment the historical survey data used for species split with contemporary, well-targeted and spatially precise data. This survey to be trialled in 2002-3 and confirmed in 2003-4. To establish a protocol so that such surveys can be quickly designed and implemented on an ongoing monitoring basis. To develop further the species split methods first proposed in FRDC 98/109 so that they can be used confidently in any new stock assessments. To re-examine the historical survey data as part of the strategy for the above and to report, particularly on the value of size class information for this purpose. To investigate and report on the potential use of electronic logbooks for enhancing the precision of stock assessment of Tiger prawn species, particularly on a spatially local scale. To investigate and report on the use of size class data for gaining some information on recruitment patterns for the stock assessment.

Tabular dataset of data collected from chinook salmon smolt trapping on the Chena River in May and June of 2017-2019. Trapping took place between the East end of the Fort Wainwright airfield (N 64.831952, W -147.571279) and adjacent to Chena Marina (N 64.81065, W -147.89908) in 2017, between Hamilton Acres (N 64.839650, W -147.681000) and Pikes Landing (N 64.830467, W –147.848750) in 2018, and between Nordale Road Bridge (N64.846536, W -147.410418) and Grahel Park (N 64.845831, W –147.706114) in 2019. This dataset contains the total number of traps set on a given date and the total number of Chinook salmon captured on that given date.