Mangroves of the Northern Territory, 1:100,000

Index:

Metadata
Citation
Description

Dataset Status
Data Quality
Contact Information
Data Dictionary
Supplementary Information

Metadata Details:

Name:AS/NZS ISO 19115 Geographic Information - Metadata, ANZLIC Metadata Profile

Version:1.0

Date Metadata Extracted:2024-04-19

Date Metadata Last Updated:2020-09-28

Current URL (HTML format) : http://www.ntlis.nt.gov.au/metadata/export_data?type=html&metadata_id=BA86AB6CD3EBA0EEE040CD9B214440E1

Current URL (XML format) : http://www.ntlis.nt.gov.au/metadata/export_data?type=xml&metadata_id=BA86AB6CD3EBA0EEE040CD9B214440E1

Citation

ANZLIC Identifier:BA86AB6CD3EBA0EEE040CD9B214440E1

Title: Mangroves of the Northern Territory, 1:100,000

Citation Date:2002-08-02

Date Type:creation

Custodian:Department of Environment, Parks and Water Security

Description

Abstract:

This spatial polygon dataset is derived from the 2001 mapping of mud crab (Scylla serrata) habitats along the NT and Queensland coastal wetlands. The polygons were derived from Landsat imagery and verified with field work and is suitable for use at scale 1:100,000.

The information can be used in many ways to assist the management of these habitats. It provides a suitable baseline dataset for monitoring broad scale changes in area and composition of coastal wetland communities. Additionally, it provides information required by managers for choosing representative habitats for protection.

Spatial dataset can be viewed in NR Maps - see Vegetation Resources; Mangroves; NT Mangroves 100k.
NR Maps website: nrmaps.nt.gov.au/nrmaps.html

ANZLIC Search Words:

biota

geoscientificInformation

Spatial Domain:

Bounding Coordinates:

North Bounding Coordinate:-11

South Bounding Coordinate:-17

East Bounding Coordinate:138

West Bounding Coordinate:129

Dataset Status

Dataset ID:

Language:English

Character Set: Latin 1

Progress:completed

Maintenance and Update Frequency:notPlanned

Data Currency Start Date:2001-01-01

Data Currency End Date:2002-06-01

Access Constraint:
Download the spatial data package (contains spatial data, maps and reports) via data.nt.gov.au/

You are licensed to use the DENR geospatial products on the terms and conditions set out in: Creative Commons Attribution 4.0 International Public License (CC BY 4.0) at: creativecommons.org/licenses/by/4.0/legalcode

If you do not agree to the terms and conditions you must not use the geospatial products.

You are free to copy, communicate and adapt the licensed material, provided that you abide by the licence terms (including Attribution) and attribute the licensed material using the statement:

Supplied by the Department of Environment and Natural Resources. Copyright Northern Territory Government.

Data Quality

Lineage:This dataset has been created to match the standards of (already existing) Queensland component, using remote sensing techniques and field validation.

Landsat ETM+ imagery was processed using the standard technique of Danaher (1995a) to produce a digital dataset of the tidal coastal wetland habitats. This technique has been recognized by Environment Australia (Ward et al. 1998) as a suitable protocol for the assessment of tidal coastal wetland habitats at a regional scale.
The computer-based coastal wetland community classification was validated with fieldwork conducted during June and August 2001. Approximately 170 sites were accessed by boat or helicopter. At each site, information on mangrove community floristics and structure was documented.

The Queensland and Northern Territory datasets were then standardized to remove discrepancies in the classification of coastal wetland habitats. A number of classes in the Queensland dataset were amalgamated in order to provide consistency between the two mapping products.

The foreshore_flats dataset from Geoscience Australia's 250k topo (1994 edition) has been used as reference in the preparation of this dataset.

Positional Accuracy:The resolution of the satellite imagery and the mapping process used results in a mapping product at a scale of 1: 100 000 with a high degree of accuracy (90%).

Attribute Accuracy:A reliability class was assigned to each polygon within the classification based on the amount of ground truth data available (i.e. aerial photography and field data). Refer to Data Dictionary in this record.

Logical Consistency:

Completeness:complete

Contacts

Name Organisation Position Role Phone Fax Email

Data Requests Officer Department of Environment, Parks and Water Security Geospatial Services Branch (on behalf of department) distributor datarequests.depws@nt.gov.au

Name	Organisation	Position	Role	Phone	Fax	Email
Data Requests Officer	Department of Environment, Parks and Water Security	Geospatial Services Branch (on behalf of department)	distributor			datarequests.depws@nt.gov.au

Data Dictionary

Attribute Attribute Description Possible Code Code Description

01. SURVEY_NME Alias: Survey Name
The name describing the survey

02. SURVEY_ID Alias: Survey Identifier
The survey code used to identify the information in the department's database library

03. CLASS Mangroves were classified to the community level based on dominant genus present and canopy density of the whole community. The density of the community was determined by estimating the PFC. A canopy cover of greater than 50% was classified as closed, while less than 50% was identified as open. The standard Specht (1987) vegetation categories of forest and shrub, which are based on height, were not included in this classification. This is due to the fact that vegetation height cannot be determined from the Landsat ETM+ data. Only areas subject to tidal inundation were included in this mapping exercise. Excluded classes included permanent pools of water and elevated land containing terrestrial vegetation. Tidally exposed non-vegetated intertidal flats along with seagrass or algal beds were also excluded.

04. VEG_FORM Alias: Broad Veg Form
Broad structural vegetation formation.
Attribute added 5/07/2019 to improve data display in NR Maps using 5 groupings: Mangrove Closed Forest, Mangrove Open Forest, Samphire/Salt Flat or Non Mangrove.

05. RELIABILITY A reliability class was assigned to each polygon within the classification based on the amount of ground truth data available (i.e. aerial photography and field data). A Highest Reliability - Complete aerial photography coverage. Fieldwork conducted 28%

B High Reliability - Complete aerial photography coverage. No fieldwork conducted 52%

C Average Reliability - No aerial photography available. Fieldwork conducted. OR No aerial photography available. Local cloud cover on satellite imagery 1%

D Reliability Unknown (Further Ground Truthing required) - No aerial photography available. No fieldwork conducted. OR No aerial photography available. Local cloud cover on satellite imagery 19%

06. SOURCE_DAT Alias: Source Data
This field indicates the base imagery processed to produce mapping in that area (path/row_date_bands).

Attribute	Attribute Description	Possible Code	Code Description
01. SURVEY_NME	Alias: Survey Name The name describing the survey
02. SURVEY_ID	Alias: Survey Identifier The survey code used to identify the information in the department's database library
03. CLASS	Mangroves were classified to the community level based on dominant genus present and canopy density of the whole community. The density of the community was determined by estimating the PFC. A canopy cover of greater than 50% was classified as closed, while less than 50% was identified as open. The standard Specht (1987) vegetation categories of forest and shrub, which are based on height, were not included in this classification. This is due to the fact that vegetation height cannot be determined from the Landsat ETM+ data. Only areas subject to tidal inundation were included in this mapping exercise. Excluded classes included permanent pools of water and elevated land containing terrestrial vegetation. Tidally exposed non-vegetated intertidal flats along with seagrass or algal beds were also excluded.
04. VEG_FORM	Alias: Broad Veg Form Broad structural vegetation formation. Attribute added 5/07/2019 to improve data display in NR Maps using 5 groupings: Mangrove Closed Forest, Mangrove Open Forest, Samphire/Salt Flat or Non Mangrove.
05. RELIABILITY	A reliability class was assigned to each polygon within the classification based on the amount of ground truth data available (i.e. aerial photography and field data).	A	Highest Reliability - Complete aerial photography coverage. Fieldwork conducted 28%
		B	High Reliability - Complete aerial photography coverage. No fieldwork conducted 52%
		C	Average Reliability - No aerial photography available. Fieldwork conducted. OR No aerial photography available. Local cloud cover on satellite imagery 1%
		D	Reliability Unknown (Further Ground Truthing required) - No aerial photography available. No fieldwork conducted. OR No aerial photography available. Local cloud cover on satellite imagery 19%
06. SOURCE_DAT	Alias: Source Data This field indicates the base imagery processed to produce mapping in that area (path/row_date_bands).

Supplementary Information

Department code: ntmang_100 (Vegetation, NT Native)

Documentation and references:

de Vries, C., Danaher, K. and Dunning, M.C. (2002)
Methods for monitoring the abundance and habitat of northern Australian mud crab, Scylla serrata. Milestone report. Objective 1: Habitat mapping.
Report to the NT DBIRD and FRDC. Department of Primary Industries, Brisbane.

Hay, T., Gribble, N., de Vries, C., Danaher, K., Dunning, M., Hearnden, M., Caley, P., Wright, C., Brown, I., Bailey, S. and Phelan, M.
Methods for Monitoring the Abundance and Habitat of the Northern Australian Mud Crab Scylla serrata. Final Report
FRDC Project 2000/142; ISBN 0 7245 4721 5.
download link: www.nt.gov.au/d/Content/File/p/Fish_Rep/FR80.pdf

Wightman Glenn M. (1989)
Mangroves of the Northern Territory and Identification Chart.
Northern Territory Botanical Bulletin No. 7, Conservation Commission of the Northern Territory.
Download link: hdl.handle.net/10070/806994

This record maintained using the NTLIS Metadata Tool

Metadata : Mangroves of the Northern Territory, 1:100,000