Title

Byron LGA Vegetation 2021 VIS_ID 5109

Data Quality Statement

Name: Data Quality Statement

Protocol: WWW:DOWNLOAD-1.0-http--download

Description:

Data quality statement for Byron LGA Vegetation 2019 VIS_ID 5109

Function: download

Download Package

Name: Download Package

Protocol: WWW:DOWNLOAD-1.0-http--download

Description:

Data (Shapefile)

Function: download

Code

08d70f00-249c-402a-a910-ad5eb052cbb8

Name

ISO 19115

Edition

2016

Type

vector

Geometric Object Type

complex

Geometric Object Count

20

Code identifying the spatial reference system

4283

Topic category

Title

ANZLIC Search Words

Reference date

2008-05-16

NSW Place Name

Byron Bay LGA

Coordinate reference system

Authority code

urn:ogc:def:cs:EPSG::

Code identifying the coordinate reference system

5711

End position

N/A

Contact info

Contact position

Data Broker

Organisation name

NSW Department of Climate Change, Energy, the Environment and Water

Telephone number

131555

Email address

data.broker@environment.nsw.gov.au

Web address

https://www.nsw.gov.au/departments-and-agencies/dcceew

Responsible party role

pointOfContact

Lineage

Description: Vegetation was mapped using a combination of aerial photograph interpretation (API), reviewing existing information (eg. vegetation survey data from various Council and state government projects), and on-ground site inspections. Refer to HPE document # E2017/3974 for more detailed information about the work undertaken.

Original API & GIS by Annette McKinley & Andrew Murray. Landmark Ecological Services P.L. - landmark@landmarkonline.com.au A.S.Murray & Associates - botanista@gmail.com

Below is a breakdown by year of how the linework and table information evolved:

2014-2016: Vegetation mapping of Byron Shire from aerial photography and limited field checking. Aerial photography commenced based on supplied 2009 Shire-wide photography (AP_byron _shire_25k_0909.gdb) with Town and Village aerial photography dated Sept. 2012 and May 2013 Coastline layer. NearMaps photography via WMS was used for those areas where available, dating from April 2014 to May 2015.

2017: Landmark Ecological Services (Landmark) was contracted by Byron Shire Council to review and update Council’s current shire wide vegetation mapping to improve the accuracy of line work, classification of polygons and reflect changes in vegetation cover since the last review. Additionally the vegetation classification was updated to be consistent with the requirements of the Native Vegetation Interim Type Standards (Sivertsen 2009). The layer had been created prior to the implementation of the BioNet vegetation classification manual, the fields PCT_comm and PCT_code were assigned from Vegetation classification for the Northern Rivers catchment area of New South Wales - Appendix 8: Vegetation community profiles and the review in 2017 identified and assigned draft PCTs that were undescribed or inconsistent with the BioNet classifications.

2019: dataset has been updated to incorporate feedback from consultation with land owners as a result of the introduction of eZones to the 2014 Byron Shire Council LEP, and some ground truthing undertaken by Jo Green.

2021: DPIE requested the vegetation layer. Running through a topology check to include it in DPIE corporate systems it was found to have thousands of overlap errors (mainly minute slivers) and so using the ET GeoWizard tools "Clean Polygon Layer", these were eliminated. The Dissolve tool was then applied to the ETGW created field ‘ET_ID’. This ‘merged overlaps’ and reduced the number of polygons to 20531. The original fields were then permanently joined to the new attribute table. In this process, sliver gaps were not eliminated because, by nature of the fragmented vegetation coverage, there were too many valid gaps to do this assessment. However, the consultant (Andrew Murray) insisted on manually examining and fixing/fine tuning the layer and "worked through the 10000+ gaps and a bunch of errors in overlap choices made by ETGeoWizards. On the way there were some offsets caused by a range of pre-2015 photography with various georeferencing differences being used early in the project. Where these were noticeable they were corrected, but some polygons will appear still poorly aligned with the 2015 base image. In addition there were polygons deleted where the vegetation had been cleared by April 2015 (photo date of most recent shire-wide georeferenced image used in the project)". The resultant layer has 20472 polygons - 50 or so polygons generated by the ETGeowizards (20531_polys) were eliminated. The final edit date is 16 August 2021 (and this date is listed as the VerDate in table)

Limitations on public access

Effective date

2009-01-10

Effective date

2009-01-10

Explanation

Checked for missing attributes All attributes were checked

Contact position

Data Broker

Organisation name

NSW Department of Climate Change, Energy, the Environment and Water

Telephone number

131555

Email address

data.broker@environment.nsw.gov.au

Web address

https://www.nsw.gov.au/departments-and-agencies/dcceew

Responsible party role

pointOfContact

Contact position

Data Broker

Organisation name

NSW Department of Climate Change, Energy, the Environment and Water

Telephone number

131555

Email address

data.broker@environment.nsw.gov.au

Web address

https://www.nsw.gov.au/departments-and-agencies/dcceew

Responsible party role

pointOfContact