Business structure and costs for Southern Rock Lobster fisheries in Tasmania including fixed (vessels, infrastructure) and variable (bait, fuel, ports) costs.

Samples of Temperature and Salinity from a CTD profile have been measured at Station 9 in the Derwent Estuary between August 2012 and January 2013.

Samples of Temperature and Salinity from a CTD profile have been measured at Station 2 in the Derwent Estuary between August 2012 and January 2013.

Samples of Temperature and Salinity from a CTD profile have been measured at 6 Stations in the Derwent Estuary between August 2012 and January 2013.

Samples of Temperature and Salinity from a CTD profile have been measured at Station 5 in the Derwent Estuary between August 2012 and January 2013.

Samples of Temperature and Salinity from a CTD profile have been measured at Station 6 in the Derwent Estuary between August 2012 and January 2013.

Underwater video technology was used to observe marine mammal interactions (seals, in particular Australian fur seals) within midwater trawl nets. A camera system was placed inside the trawl net in the vicinity of a Seal Excluder Device, designed to prevent megafauna from entering the codend of the net and provide an escape point. Digital video data was described according to a range of operational, catch and interaction fields, and made time-specific to each trawl shot. Data is linked to commercial catch and effort data providing operational, environmental and catch information.

Samples of Temperature and Salinity from a CTD profile have been measured at Station 3 in the Derwent Estuary between August 2012 and January 2013.

Samples of Temperature and Salinity from a CTD profile have been measured at Station1 in the Derwent Estuary between August 2012 and January 2013.

This study assessed the spatial and temporal (horizontal and vertical) distribution of Asterias amurensis larvae in the Derwent Estuary and adjacent Storm Bay, SE Tasmania. Horizontal transport and development was assessed by collecting plankton samples at 2 or 4 week intervals, from July to December 2001, at 4 sites in the Derwent Estuary and 6 sites in Storm Bay. The effects of light and salinity on vertical distribution of larvae was examined over a 24 hour tidal and diel cycle.