Data Trawler - Survey Details

SS2011_V04    - is a Marine National Facility voyage

Period: 2011-08-25 02:00 to 2011-09-13 06:00 UTC

Duration: 19.17 days

From: Fremantle To: Geraldton

Region: Leeuwin Current West Australian Coast

Ship: Southern Surveyor [details]

Description: Southern Surveyor Research Voyage ss2011_v04 Biological Oceanography of Western Rock Lobster Larvae - Part 2. Scientific Objectives: Lack of knowledge of Western Australia's fisheries oceanography fundamentally limits understanding of the recruitment of Western Rock Lobster, Panulirus cygnus, in a fishery worth $200-300 million/year to Australia. The life cycle of P. cygnus includes a planktonic "phyllosoma" larval stage that is transported up to 1500 km offshore via ocean currents. Development continues for approximately 9 - 11 months at sea, before juveniles ("puerulus")return over the shelf to recruit to coastal reef areas. Critical to improving the management of this fishery, which is under intensive review, is appropriate process information about the oceanographic mechanisms driving coastal recruitment. The last three years of puerulus settlement have been low, with the latest (2008/09) settlement the lowest in 40 years of monitoring and not explained by the environmental factors previously identified as affecting settlement. The cause of the low settlement represents a key unknown for managers assessing the sustainability of WA's coastal fisheries, and is likely to be driven by variation in food availability during the open-ocean stage of the phyllosoma larvae. Our study will test the hypothesis that the ocean productivity, particularly the nitrate-driven classic food chain supporting diatoms, copepods and other zooplankton, limits phyllosoma growth rate and survival in their oceanic phase. We will execute this study at, or after the peak, of the autumn/winter plankton bloom in the Leeuwin Current, with the aim of quantifying oceanographic parameters crucial to modelling rock lobster larval dynamics.

Leader: A.Waite (UWA)

Project: National Facility External Users: A.Waite (University of W.A.) [details]

Marlin Metadata:-

Southern Surveyor Voyage SS2011_V04 ADCP Data [details]

Southern Surveyor Voyage SS2011_V04 CTD Data [details]

Southern Surveyor Voyage SS2011_V04 Hydrology Data [details]

Southern Surveyor Voyage SS2011_V04 Nacelle (towed CTD) Data [details]

Southern Surveyor Voyage SS2011_V04 Raw Data Tapes and Documentation [details]

Southern Surveyor Voyage SS2011_V04 Underway Data [details]

Metadata from OBIS Australia datasets:- biological data is published via the OBIS-AU IPT server and delivered to one or more of OBIS, ALA and GBIF

Participants - on ship:-

This list includes those that may have only been on part of the voyage. See voyage reports on 'Reports and Maps' tab for details.

Marine National Facility Reports - plans, summaries and data processing

• SS2011_V04 Scientific Highlight - report of the key outputs

• SS2011_V04 Underway Data Processing Report - details of data processing steps, calibration information, instruments used and any issues with the data.

• SS2011_V04 Voyage Summary - includes preliminary results, voyage narrative, types of data collected with C77/ROSCOP codes.

• SS2011_V04 Voyage Plan - includes objectives, investigator details, proposed data collection, voyage track and equipment to be used.

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Publications, reports and datasets from this voyage.

Data publishing

This is a list of online datasets hosted by CSIRO. Other processed datasets hosted by collaborating organisations may be found on the 'Metadata' or "Reports, Publications and Maps' tab.
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