Territory Stories

Development of an integrated long-term mangrove monitoring program for Darwin Harbour. Sub-project A: Mangrove community mapping: Charles Point to Gunn Point 2016

Details:

Title

Development of an integrated long-term mangrove monitoring program for Darwin Harbour. Sub-project A: Mangrove community mapping: Charles Point to Gunn Point 2016

Other title

Sub-project A: Mangrove community mapping: Charles Point to Gunn Point 2016

Creator

Brocklehurst, P; Edmeades, B; Northern Territory. Department of Environment and Natural Resources. Rangelands Division

Editor

Hill, J.V.

Collection

E-Publications; E-Books; PublicationNT; DENR Technical Report 19/2018

Date

2019-08-01

Location

Darwin Harbour; Shoal Bay

Description

This report describes the updated mangrove communities for the approximately 32,000 ha of mangroves and salt flats that line the foreshores of Darwin Harbour, Shoal Bay and areas south of Charles Point and Gunn Point. Results indicate that there has not been any significant, discernible or substantive changes in mangrove forest composition in Darwin Harbour between 1996 and 2016.

Map scale

1:8,000

Notes

Made available via the Publications (Legal Deposit) Act 2004 (NT)

Table of contents

1. Introduction; 2. Objectives; 3. Methods; 4. Results and discussion; 5. Conclusion; 6. Recommendations; 7. Bibliography; 8. Appendix.

Language

English

Subject

Mangroves; Mangrove community mapping; Map unit; Vegetation mapping

Publisher name

Northern Territory Government

Place of publication

Palmerston

Series

DENR Technical Report 19/2018

Format

x 77 pages; colour illustrations and maps; x 30 cm

File type

application/pdf

ISBN

9781743501764

Use

Attribution International 4.0 (CC BY 4.0)

Copyright owner

Northern Territory Government

License

https://creativecommons.org/licenses/by/4.0/

Related links

http://www.ntlis.nt.gov.au/metadata/export_data?type=html&metadata_id=87F656131848A609E050CD9B214417E1

Parent handle

https://hdl.handle.net/10070/754065

Citation address

https://hdl.handle.net/10070/780401

Page content

Mangrove Monitoring Project: Sub-project A 5 3. Methods 3.1 IMMRP study site The IMMRP mangrove monitoring area includes all areas between Charles Point in the west and Gunn Point to the east and incorporates 31,668 ha of mangrove and salt flat (Figure 4). 3.2 High resolution digital aerial photography: 2015, 2016 New high resolution digital aerial photography (Figures 2) was used as the base for refinement of the original historic mapping of Darwin Harbour (Figure 3) and for the full IMMRP project area. The digital aerial photography used in this project were captured in 2015 and 2016 on either a Vexcel Ultracam D or Ultracam X large-format digital camera. Processing of the imagery is undertaken by commercial contractors to produce a true colour ortho-rectified mosaics (dynamic range of 8-bit) supplied in a JPEG2000 compression format (10:1). The ground sampling distance of the imagery used in the project was 45cm (2015) and 15cm (2016) with a reported spatial accuracy of <1 m. Figure 2. Extent of the 2015 digital high resolution aerial photography with 2016 photography inserted 3.3 Darwin Harbour mangrove mapping 1996 The first standardised mapping of the mangrove environment in Darwin Harbour (Mandorah to Elliot Point-Larrakeyah) was undertaken in 1996 and forms the current baseline for the harbour (20,400 ha). The methodology for the mapping was composed by manually interpreting 1:25,000 colour aerial photography, circa 1979 and 1995, into eleven map units/communities. An example of photo scale is provided in Figure 3.