Identification

Field	Value
Title	Nearshore subtidal marine reef systems and soft sediment mapping, New South Wales
Alternative title(s)	NearshoreSubtidalMarineReffMapping2002.shp
Abstract	Near-shore reef boundaries mapped from available aerial photography over a range of years and scales. The mapped reef boundaries represent the greatest extent of reef observed over multiple years ie. mapped reef area includes reefs prone to intermittent sand inundation. Unrectified photos were used. Mapping has been conducted in several stages with the current version 5 being extended to include the coast between Port Jackson and Newcastle. Clarence River and Tweed Heads. Mapping is effectively complete with about 0.2% of the NSW coast remaining unmapped due to a number of reasons - unavailability of suitable aerial photos; poor visibility through the water column in deep nearshore zones (eg Sydney Heads south). This mapping was conducted by NSW National Parks and Wildlife Service, and is owed jointly by NPWS, NSW Fisheries, NSW Marine Parks Authority, NSW Department of Land and Water Conservation and Environment Australia. Aerial photos used in this process were provided by NSW Dept of Land and Water Conservation's Specialist Coastal and Floods Unit.
Resource locator
Data Quality Statement	Name: Data Quality Statement Protocol: WWW:DOWNLOAD-1.0-http--download Description: DQS for Nearshore subtidal marine reef mapping Function: download
Nearshore Subtidal Marine Reef data package	Name: Nearshore Subtidal Marine Reef data package Protocol: WWW:DOWNLOAD-1.0-http--download Description: Data package including data, reports, and associated documentation... Function: download
Unique resource identifier
Code	f357f40e-0d9a-4d29-b4fd-4e61729a1752
Presentation form	Document digital
Edition	1
Dataset language	English
Metadata standard
Name	ISO 19115
Edition	2016
Dataset URI	https://datasets.seed.nsw.gov.au/dataset/f357f40e-0d9a-4d29-b4fd-4e61729a1752
Purpose	This coverage is intended for used in regional level marine conservation assessment. It was prepared using very low cost techniques (ie. unrectified API) and should not be relied upon for navigation purposes. THIS DATA IS NOT SUITABLE FOR NAVIGATION PURPOSES.
Status	Completed
Spatial representation
Type	vector
Spatial reference system
Code identifying the spatial reference system	4283
Spatial resolution	50 m
Additional information source	ATTRIBUTES:;SUBSTRATE Categories: "Reef": includes bedrock, bolder/cobble fields, barrens below the approximate astronomical low water mark; "Sand": includes sand and soft sediments;"Emergent": includes emergent and intertidal components of islands and rocks derived directly from the AMBIS low water coverage (Marine). Emergent areas should be treated as outside in any analysis of subtidal (ie. below astronomical low water) habitats. For delineation of intertidal and supratidal components of these 'emergent' units use the complementary intertidal coverage;"Outside": includes areas not covered by available aerial photography, or bottom was not clearly visible through the water column.;HABITAT Categories (on selected reef only):"Barrens" : Large areas of unvegetated reef, grazed and maintained by urchins;"Fringe" : Includes vegetated reef;"Sand": includes areas of sand and soft sediments;"Emergent": includes emergent and intertidal components of islands and rocks derived directly from the AMBIS low water coverage (Marine). Emergent areas should be treated as outside in any analysis of subtidal (ie. below astronomical low water) habitats. For delineation of intertidal and supratidal components of these 'emergent' units use the complementary intertidal coverage; "Outside": includes areas not classified to habitat level, along with areas not covered by available aerial photography, or where bottom type was not clearly visible through the water column.;METHOD:;Aerial photos of varying scales (generally 1:10,000, but ranging from 1:8,000 to 1:40,000) and dates (1970's to 2000) were traced onto 1:25,000 scale topographic maps using a 'Zeiss - Aero Sketchmaster'. Only photos with sharp visibility through the water column were utilised. Multiple photos where viewed and traced for any one location with the final linework representing the greatest extent of reef visible over the period examined. Obvious algal drifts were excluded. Photos and digitised composite remain un-rectified. No ground truthing conducted, but reliance on experience of interpreter and capacity to check reef boundary positions at a site across a time series of photo images. The AMBIS 1995 low water coast ('marine') was editied into the coverage. Where, the AMBIS coast was not available (eg behind bay closures), the coastline from LIC 1:25,000 topos was applied.Where clear images allowed, additional attributes, habitats (ie barrens, fringe) where mapped on a selection of reefs. The attribute accuracy of these habitat features remains unvalidated and should be consided to be of poor quality at this point in time.

Classification of spatial data and services

Field	Value
Topic category

Keywords

Field	Value
Keyword set
keyword value	ECOLOGY-Habitat FISHERIES FISHERIES-Marine MARINE MARINE-Biology MARINE-Coasts MARINE-Reefs OCEANOGRAPHY
Originating controlled vocabulary
Title	ANZLIC Search Words
Reference date	2008-05-16
Geographic location
West bounding longitude	149.7
East bounding longitude	153.6
North bounding latitude	-37.6
South bounding latitude	-28.1
NSW Place Name	NSW Coast
Vertical extent information
Minimum value	-100
Maximum value	2228
Coordinate reference system
Authority code	urn:ogc:def:cs:EPSG::
Code identifying the coordinate reference system	5711
Temporal extent
Begin position	1940-10-18
End position	N/A
Dataset reference date
Resource maintenance
Maintenance and update frequency	Unknown
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

Quality and validity

Field	Value
Lineage	Lineage:; Mapping has been conducted in five stages.; Version 1: The first stage of the 'Nearreef' coverage mapped the area from Woody Head (29 22'S) to Sawtell (30 22' 30'' S). This work was initiated in 1996 by the NPWS and completed with funding from the recently established NSW Marine Parks Authority in preparation for the development of zonation plans for the Solitary Island Marine Park. The coverage was prepared in ERMS and converted to ArcView. Reef boundaries from unrectified aerial photos were transferred onto 1:25,000 topographic sheets using a Zeizz Aero Sketchmaster before being digitised. The coastline was digitised directly from the 1:25,000 topo sheets.; Version 2: Second stage extended mapping from Sawtell to Newcastle. Data capture was conducted at NPWS with funding from the NSW Marine Parks Authority and Environment Australia as part of the Manning Shelf Bioregional Assessment. Methodology remained essentially the same as stage 1, however data capture in stage 2 was achieved using ArcInfo GIS software and the 1:25,000 Topographic map coastline was replaced with the AUSLIG/AMBIS 1995 low water coastline ('marine').; Version 3: Third stage extended mapping from Port Jackson (ie.Sydney) south to Cape Howe (ie. NSW-Victorian Border). Mapping was undertaken by NPWS in mid 2001 with funding from NSW Fisheries. Methods used were identical to those in Stage 2 except that additional reef habitats (ie barrens, fringe) were mapped for selected areas south of Sydney.; Version 4: Fourth stage extended mapping north from Woody Head (29 22'S) to Tweed Heads (ie.NSW - Queensland border). Mapping was undertaken by NPWS in mid 2001 with funding from the NSW Marine Parks Authority as part of the investigations into the Byron Bay Marine Park proposal.; Version 5: Fifth stage essentially complete the last major stage in the mapping of the NSW coast, between Sydney and Newcastle. Mapping was conducted by NPWS with funding from NSWF.; Positional accuracy:; Fair. Upto +/- 50m. Error due to tracing of unrectified aeral photos; Attribute accuracy:; Fair for substrate (sand, reef) categories.; Poor for reef habitat categories (barrens, fringe).; No ground truthing conducted. Possible confunding effect of algae drifts generally eliminated by viewing multiple images of any one site.; SUBSTRATE Categories; 'Reef': includes bedrock, bolder/cobble fields, barrens below the approximate astronomical low water mark.; 'Sand': includes sand and soft sediments; 'Emergent': includes emergent and intertidal components of islands and rocks derived directly from the AMBIS low water coverage (Marine). Emergent areas should be treated as outside in any analysis of subtidal (ie. below astronomical low water) habitats. For delineation of intertidal and supratidal components of these 'emergent' units use the complementary intertidal coverage.; 'Outside': includes areas not covered by available aerial photography, or bottom was not clearly visible through the water column; HABITAT Categories (on selected reef only); 'Barrens' : Large areas of unvegetated reef, grazed and maintained by urchins.; 'Fringe' : Includes vegetated reef; 'Sand': includes areas of sand and soft sediments; 'Emergent': includes emergent and intertidal components of islands and rocks derived directly from the AMBIS low water coverage (Marine). Emergent areas should be treated as outside in any analysis of subtidal (ie. below astronomical low water) habitats. For delineation of intertidal and supratidal components of these 'emergent' units use the complementary intertidal coverage.; 'Outside': includes areas not classified to habitat level, along with areas not covered by available aerial photography, or where bottom type was not clearly visible through the water column; Logical consistency:; Good. Good reef boundary consistency between years, although sand drift (constriction of some reefs) was observed.; Completeness:; Version 5 maps reefs along the whole NSW coast (ie Tweed Heads to Cape Howe); reefs are mapped in waters upto 1km offshore and in depths upto 20m. A number of small gaps exist in the cover where suitable images were not availble, or where wave exposure and excessive depth obscured reef visibility. Version 5 essentially completes the mapping of the NSW nearshore zone. Only,0.2% remains unmapped.

Field

Value

Lineage

Lineage:; Mapping has been conducted in five stages.; Version 1: The first stage of the 'Nearreef' coverage mapped the area from Woody Head (29 22'S) to Sawtell (30 22' 30'' S). This work was initiated in 1996 by the NPWS and completed with funding from the recently established NSW Marine Parks Authority in preparation for the development of zonation plans for the Solitary Island Marine Park. The coverage was prepared in ERMS and converted to ArcView. Reef boundaries from unrectified aerial photos were transferred onto 1:25,000 topographic sheets using a Zeizz Aero Sketchmaster before being digitised. The coastline was digitised directly from the 1:25,000 topo sheets.; Version 2: Second stage extended mapping from Sawtell to Newcastle. Data capture was conducted at NPWS with funding from the NSW Marine Parks Authority and Environment Australia as part of the Manning Shelf Bioregional Assessment. Methodology remained essentially the same as stage 1, however data capture in stage 2 was achieved using ArcInfo GIS software and the 1:25,000 Topographic map coastline was replaced with the AUSLIG/AMBIS 1995 low water coastline ('marine').; Version 3: Third stage extended mapping from Port Jackson (ie.Sydney) south to Cape Howe (ie. NSW-Victorian Border). Mapping was undertaken by NPWS in mid 2001 with funding from NSW Fisheries. Methods used were identical to those in Stage 2 except that additional reef habitats (ie barrens, fringe) were mapped for selected areas south of Sydney.; Version 4: Fourth stage extended mapping north from Woody Head (29 22'S) to Tweed Heads (ie.NSW - Queensland border). Mapping was undertaken by NPWS in mid 2001 with funding from the NSW Marine Parks Authority as part of the investigations into the Byron Bay Marine Park proposal.; Version 5: Fifth stage essentially complete the last major stage in the mapping of the NSW coast, between Sydney and Newcastle. Mapping was conducted by NPWS with funding from NSWF.; Positional accuracy:; Fair. Upto +/- 50m. Error due to tracing of unrectified aeral photos; Attribute accuracy:; Fair for substrate (sand, reef) categories.; Poor for reef habitat categories (barrens, fringe).; No ground truthing conducted. Possible confunding effect of algae drifts generally eliminated by viewing multiple images of any one site.; SUBSTRATE Categories; 'Reef': includes bedrock, bolder/cobble fields, barrens below the approximate astronomical low water mark.; 'Sand': includes sand and soft sediments; 'Emergent': includes emergent and intertidal components of islands and rocks derived directly from the AMBIS low water coverage (Marine). Emergent areas should be treated as outside in any analysis of subtidal (ie. below astronomical low water) habitats. For delineation of intertidal and supratidal components of these 'emergent' units use the complementary intertidal coverage.; 'Outside': includes areas not covered by available aerial photography, or bottom was not clearly visible through the water column; HABITAT Categories (on selected reef only); 'Barrens' : Large areas of unvegetated reef, grazed and maintained by urchins.; 'Fringe' : Includes vegetated reef; 'Sand': includes areas of sand and soft sediments; 'Emergent': includes emergent and intertidal components of islands and rocks derived directly from the AMBIS low water coverage (Marine). Emergent areas should be treated as outside in any analysis of subtidal (ie. below astronomical low water) habitats. For delineation of intertidal and supratidal components of these 'emergent' units use the complementary intertidal coverage.; 'Outside': includes areas not classified to habitat level, along with areas not covered by available aerial photography, or where bottom type was not clearly visible through the water column; Logical consistency:; Good. Good reef boundary consistency between years, although sand drift (constriction of some reefs) was observed.; Completeness:; Version 5 maps reefs along the whole NSW coast (ie Tweed Heads to Cape Howe); reefs are mapped in waters upto 1km offshore and in depths upto 20m. A number of small gaps exist in the cover where suitable images were not availble, or where wave exposure and excessive depth obscured reef visibility. Version 5 essentially completes the mapping of the NSW nearshore zone. Only,0.2% remains unmapped.

Constraints related to access and use

Field	Value
Limitations on public access

Data Quality

Field	Value
Scope	dataset
DQ Completeness Commission
Effective date	2001-01-01
DQ Completeness Omission
Effective date	2001-01-01
DQ Conceptual Consistency
Effective date	1900-01-01
DQ Topological Consistency
Effective date	1900-01-01
Explanation	Fair for substrate (sand, reef) categories.Poor for reef habitat categories (barrens,fringe). No ground truthing conducted. Possible confunding effect of algae drifts generally eliminated by viewing multiple images of any one site.
DQ Absolute External Positional Accuracy
Effective date	1900-01-01
Explanation	Fair. Upto +/- 50m. Error due to tracing of unrectified aeral photos
DQ Non Quantitative Attribute Correctness
Effective date	1900-01-01
Explanation	Fair for substrate (sand, reef) categories. Poor for reef habitat categories (barrens, fringe). No ground truthing conducted. Possible confunding effect of algae drifts generally eliminated by viewing multiple images of any one site.

Responsible organisations

Field	Value
Responsible party
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

Metadata on metadata

Field	Value
Metadata point of contact
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
Metadata date	2024-02-26T15:33:18.739866
Metadata language

Identification

Title

Alternative title(s)

Abstract

Resource locator

Data Quality Statement

Nearshore Subtidal Marine Reef data package

Unique resource identifier

Code

Presentation form

Edition

Dataset language

Metadata standard

Name

Edition

Dataset URI

Purpose

Status

Spatial representation

Type

Spatial reference system

Code identifying the spatial reference system

Spatial resolution

Additional information source

Classification of spatial data and services

Topic category

Keywords

Keyword set

keyword value

Originating controlled vocabulary

Title

Reference date

Geographic location

West bounding longitude

East bounding longitude

North bounding latitude

South bounding latitude

NSW Place Name

Vertical extent information

Minimum value

Maximum value

Coordinate reference system

Authority code

Code identifying the coordinate reference system

Temporal extent

Begin position

End position

Dataset reference date

Resource maintenance

Maintenance and update frequency

Contact info

Contact position

Organisation name

Telephone number

Email address

Web address

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

Responsible party role

Quality and validity

Lineage

Constraints related to access and use

Limitations on public access

Data Quality

Scope

DQ Completeness Commission

Effective date

DQ Completeness Omission

Effective date

DQ Conceptual Consistency

Effective date

DQ Topological Consistency

Effective date

Explanation

DQ Absolute External Positional Accuracy

Effective date

Explanation

DQ Non Quantitative Attribute Correctness

Effective date

Explanation

Responsible organisations