Review paua dive survey methodology

Trophia was contracted by the New Zealand Ministry of Fisheries (MFish) to review the current methodology for surveying paua abundance. The specific objectives for this project include: 1. To undertake a review of the utility of research surveys in stock assessment models for paua and make recommendations on the design and application of future surveys. The status of paua stocks is determined by periodic stock assessments using fishery independent dive surveys to… Read More

Recreational fishing survey Karumba, Southern Gulf of Carpentaria

Trophia was contracted by the Australian Centre for Tropical Freshwater Research to contribute to the Southern Gulf Environmental Information Program by describing and assessing individually the distinct recreational fisheries in the area. This study is the second carried out by Trophia in this series and focused on the tourist fishery sub component. The objectives were: To estimate catch, effort and mean size of the principal target species during the May-June strata of… Read More

Monitoring the recreational blue cod and sea perch fishery in the Kaikoura – North Canterbury area

Trophia was contracted by the New Zealand Ministry of Fisheries (MFish) to monitor the recreational blue cod (Parapercis colias) and sea perch (Helicolenus percoides) fishery in the North Canterbury – Kaikoura area. The specific objectives for this project include: 1. To monitor changes in recreational catch rates of blue cod and sea perch in the North Canterbury – Kaikoura area from a boat ramp survey. 2. To monitor changes in the size… Read More

Recreational fishing surveys in the Southern Gulf of Carpentaria – a pilot study

Information on the catch and effort of recreational fishing in the Southern Gulf of Carpentaria is required to ensure the sustainability of fishing activities, and preserve the unique environment and wilderness aspects of this area. The Southern Gulf includes some of the prime recreational fishing locations in Australia with estimates upwards of 80,000 visitors to Karumba and Burketown each year during the winter season . However, a review by Hart (2002) found… Read More

Surveys of pre-recruits of red rock lobster ( Jasus edwardsii ) in CRA 8 using modified commercial pots – a pilot study

This pilot study examined the feasibility of obtaining a pre-recruit abundance index with a modified pot design in CRA8. It complemented objective 8 of the 2000-01 Ministry of Fisheries rock lobster research project, which was to examine the relationship between recruitment indices derived from puerulus collectors, juvenile dive surveys and the observer and logbook catch sampling programmes and make recommendations on the most appropriate way of predicting recruitment to the fishery. Information… Read More

Fisheries monitoring programs in the Southern Gulf of Carpentaria – a data review

This project reported on the fisheries component of the Southern Gulf Environmental Information Program (SGEIP) undertaken by the Australian Centre for Tropical Freshwater Research (ACTFR) on behalf of the Department of State Development, Queensland. The ACTFR is a research and consultancy centre established within James Cook University in 1987 to promote water research, technology and information transfer to industry. The general objective was to critically assess existing fisheries monitoring information in the… Read More