Catch and Effort Cells for the Gippsland Lakes fisheries

dataset: CE_GIPPSLAND_LAKES_1998
This layer features the area cells used to record Catch and Effort data for the Gippsland Lakes commercial fisheries from April 1998 to March 2020. This layer is also used by the Gippsland Lakes Bait and Gippsland Lakes (Mussel Dive) fisheries, which are both still active.
 
Citation proposal Citation proposal

(2016)

Catch and Effort Cells for the Gippsland Lakes fisheries

Victorian Fisheries Authority

Description

Title
Catch and Effort Cells for the Gippsland Lakes fisheries 
Alternate title
CE_GIPPSLAND_LAKES_1998 
Purpose
The CE_GIPPSLAND_LAKES_1998 layer provides cells on which various summary catch and effort data for the Gippsland Lakes fisheries can be imported, displayed, and analysed. Catch and effort data can be used to display trends in fishing activity. Summary information such as extent of catch, total catch, effort, catch per unit area, and catch per unit effort can be represented. This information is crucial to ensure effective fisheries management, research and monitoring. This data set may be displayed in conjunction with a variety of environmental data capable of providing an insight into the behaviour of the many species caught in the Gippsland Lakes. A depth model, ocean currents, temperature profiles and salinity levels, are useful data that may assist in gaining an understanding into the ecology of these species. 
Supplemental Information
History: 4 Feb 2004 - Creation of original layer and addition of new attributes and attribute values. 2 Mar 2005 - Projection of shapefile into GDA. Jan 2025 - Some islands near the entrance to Bunga Arm were added by "cutting out" these islands from the relevant fishery polygon (This version of the areas is yet to be uploaded). Relationship to other Datasets: This layer was originally created from a layer of Gippsland Lakes area cells. The shoreline of the lakes is derived from the 1:25,000 Linear Hydrological Features (HYDRO25) layer of the Corporate Geospatial Data Library (CGDL), which is itself derived from Land Victoria's State Digital Map Base topographic layer, converted from Microstation DGN format to ArcInfo format. Current Design Issues: The layer from which this dataset was created was originally designed in accordance with the specifications set out in the Victorian Gippsland Lakes And Lake Tyers Fishing logbook. It was later revised based on feedback received from the Catch And Effort Unit, Department of Primary Industries (DPI), Queenscliff. Related Documents: None CGDL HYDRO25 metadata is available at the address below for DSE/DPI staff only http://sysx/cgi-bin/websql/metadata/dataset_full.hts?name=HYDRO25 
Status
Completed 
 
 

Spatial

Horizontal Accuracy
25m 
Code
4283 
 
 

Maintenance

Maintenance and update frequency
As needed 
 
 

Contacts

  Point of contact

Cited responsible party

No information provided.

Cited responsible party

No information provided.

Cited responsible party

No information provided.
 
 

Keywords

Topic category
  • Oceans
Continents, countries, sea regions of the world.
  • Australia
DELWP Categories
  • Oceans & Estuaries
 
 

Resource Constraints

Use limitation
DataVic 
Classification
Unclassified 
Creative Commons Attribution 4.0 (CC-BY)
 
 

Lineage

Statement
Dataset Source: Land Victoria - State Digital Map Base. Gippsland Lakes And Lake Tyers Fishing areas Dataset Originality: Derived 
Description
Collection Method: Generated from locations of specific coastline features 
Description
Source description not available 
Description
Source description not available 
Description
The polygons from another coverage of Gippsland Lakes areas were dissolved by their area code to create the dataset. In the new dataset, the region features were dropped, a polygon corresponding to an area no longer fished was deleted, two other attributes were added to the dissolve item and their values were calculated for all of the polygons. This dataset was later converted to a shapefile and projected into the Geocentric Datum of Australia (GDA) 
 
 

Metadata Constraints Metadata Constraints

Classification
Unclassified 
 
 

Quality

Attribute Quality
Comments
All attributes have been validated by the Habitat Ecology section, DPI, and are complete. 
 
Positional Accuracy
Comments
The area code polygon boundary lines in this dataset link specific geographic features. For the source layer: * Description: From the State Digital Map Base - Topographic metadata (Geospatial Information), "The planimetric accuracy attainable will be the sum of errors from three sources: the positional accuracy of the source material, errors due to the conversion process and errors due to the manipulation process". * Determination: Survey controlled with 8 points per mapsheet with a residual error less than 10m at ground scale * Horizontal Accuracy: 90% of well defined points will fall within ±12.5m of their true position. * Vertical Accuracy: 90% of elevations will fall within ±0.5 of a contour interval, which are at 10 or 20 metres. 
 
Conceptual Consistency
Comments
This data has been validated by the Habitat Ecology section, DPI. 
 
Missing Data
Comments
This layer is complete for the Gippsland Lakes. 
 
Excess Data
 
 

Overviews

Graphic Overview of Data Footprint


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