Using GPS technology to improve fishery-dependent data collection in abalone fisheries
Mundy, CN, Using GPS technology to improve fishery-dependent data collection in abalone fisheries, Using GPS techology to improve fishery-dependent data collection in abalone fisheries, IMAS/ FRDC, Hobart, Tasmania, 1, pp. 1-125. (2012) [Government or Industry Research]
This project has successfully developed a range of scripts and procedures to automate
FRDC Final Report 2006/029 Page 5
the processing of raw spatial data, to provide spatial performance measures useful
for abalone fisheries assessment. Importantly, the data that can be obtained using
GPS and depth data loggers is highly quantitative, and not subject to bias of any
kind. It is also a low cost system, with the cost of GPS and depth logger expected to reduce to around $700 per diver. The data, logger management and preliminary
analysis tasks for the Tasmanian fishery should be achievable by a single full time
Technical Officer. The GPS and depth logger has minimal impact on the catching
sector operations, with the exception of remembering to turn the GPS logger on and
off, and recharging the GPS.
This project has also developed and established a multi-purpose RDBMS that can a)
maintain a register of loggers and fishers using unique identifiers, b) manage the
deployment of loggers to individual fishers, and c) provide an upload portal to a
secure database in SQL Server 2008. The tools developed have intentionally utilised
the capacity of free and open source software (FOSS), such that uptake of the
concept is not limited by the financial cost required if they were developed entirely
within more commonly used but corporate RBDMSs such as Oracle (with Oracle
Spatial), or corporate GIS software such as ESRIís ArcGIS.
This project has established the logic process behind the use of an objective fisherydependent
data collection program focusing on acquiring spatial data of fishing
events. Spatial methods of this type have not previously been applied to small vessel fisheries. While there has been some spatial analysis of VMS derived fishery
dependent data to date, such analyses are limited by the low temporal resolution of
sampling. The advantage of the system outlined here is that it is designed
specifically for the needs of fishery assessment, rather than for compliance.
The development of these methods facilitate the use of low-cost spatial performance
measures to assess abalone dive fisheries at one tenth the cost of a fisherydependent
density estimation program to achieve similar management outcomes.
In addition to activities in Tasmania, the project has also provided an extension service
to New South Wales, Victoria and South Australia, that has included provision of
the AbTrack RBDMS, SQL Server 2008 SQL and R scripts, and training.
Government or Industry Research
Spatial Management, Spatial Analysis, GPS, Data logger, Abalone, Fishery dependent data