Contacts

 

Identifiers and Keywords

ANZLIC Id

ANZVI0803001038 

Jurisdiction

Victoria 

Topic category

• Farming
• Health

 

Resource Constraints

Classification

Unclassified  

 

Other Dataset Details

Date ( Revision )

2010-01-27

Status

Completed  

Purpose

PSYLLID25 is used to target areas affected psyllids when planning control works and monitoring programs. This layer may be overlayed with temperature, rainfall, elevation and aspect to determine correlations and to facilitate predictive modelling. 

Credit

Darren McKinty, Debbie Edwards, Geoff Pike (Erica), Psyllid Working Group 

Format

DIGITAL Arc/Info Revision 7 Librarian layer 1 

Supplemental Information

Relationship to other Datasets: Boundaries of polygons may follow line work contained in TOPO25, HYDRO25, ROAD25 and FOREST25. PSYLLID25 will be used with TOPO25 (elevation and aspect) and climatic data to determine correlations, if any. FOREST25 could be used to check accuracy of psyllid mapping as attacks usually occur in E.regnens. Current Design Issues: This layer has been simplified and contains only items and valid codes for which data is currently or is very likely to be available. Future Design Issues: This layer will be reviewed by the soon to be appointed Project Officer, Psyllid Working Group. Items that should be considered (according to Debbie Edwards and Darren McKinty) are: psyl_mort,3,3,I = Percentage of dead trees within the area due to psyllid attack fungi,1,1,I = Type of fungi (fungi.lut) fung_mort,3,3,I = Percentage of dead trees within the area due to fungal attack. psyl_age,1,1I = Age of psyllid (psyl_age.lut): egg, 1-5 larval instars and adult. Some tracking of origin of line work ie. TOPO25, HYDRO25 may need to be implemented as for BLOCK25. Creation of multiple layers to store history ie 1 per year but this may not be necessary in ARC/INFO Version 7. Related Documents: None 

Maintenance and update frequency

Annually  

 

Spatial

Spatial representation type

Vector  

Description

25K Map Sheet - MATLOCK 100K Map Sheet - HEALESVILLE 25K Map Sheet - MANSFIELD 

 

Temporal

Begin date

1994-03-01 

End date

now  

 

Resolution

Horizontal Accuracy

25m  

 

Quality

Conceptual Consistency

See Layer Attribute Documentation 

Missing Data

Complete for selected blocks. Complete for selected blocks. 

Attribute Quality

Ground truthing is required to verify boundaries and intensity. 

Positional Accuracy

Precision: 10 m. to 100 m. Determination: Deductive Estimate 

 

Lineage

Description

Currently all data has been capture using aerial observation. From the aircraft, the observer has mapped the infestation boundary and intensity onto a 1:25 000 topographic map with Forest Block boundaries clearly delineated. This data was then transferred onto a stable base and digitised pulling may of the lines from layers TOPO25, HYDRO25, ROAD25 and FOREST25. 

Statement

Dataset Source: Boundaries of polygons may follow line work contained in TOPO25, HYDRO25, ROAD25 and FOREST25. Dataset Originality: Primary & Derived 

 

About the Metadata Record

Metadata identifier

urn:uuid / d13894b1-e1e5-5449-b0a8-730d83874032