Territory Stories

An inventory of freshwater lagoons in the Darwin region

Details:

Title

An inventory of freshwater lagoons in the Darwin region

Other title

Julia Schult

Creator

Schult, Julia; Northern Territory. Dept. Of Infrastructure, Planning And Environment. Water Monitoring Branch

Collection

E-Publications; E-Books; PublicationNT; Report ; No 36/2004

Date

2004

Description

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

Notes

Date:2004

Table of contents

1. INTRODUCTION -- 2. METHODS -- 3. RESULTS AND DISCUSSION -- 4. ACKNOWLEDGMENTS -- 5. REFERENCES.

Language

English

Subject

Freshwater Lagoons -- Northern Territory -- Darwin Region

Publisher name

Dept. of Infrastructure, Planning and Environment

Place of publication

Darwin

Series

Report ; No 36/2004

Format

ii, 7, [44] p. : ill., maps ; 30 cm.

File type

application/pdf.

Copyright owner

Check within Publication or with content Publisher.

Parent handle

https://hdl.handle.net/10070/213102

Citation address

https://hdl.handle.net/10070/715568

Page content

An Inventory of Darwin Region Lagoons 3 2.2 Criteria for Selection Each image was searched visually for wetlands using Fugawi 3.1 software (Northport Systems 2003). Small to medium size water bodies with macrophyte cover and/or a fringe of aquatic vegetation were classified as lagoons and included in the inventory. Large dams (e.g. Harrison Dam, Manton Dam) and flooded quarries (identified by jagged boundaries, clearing and a lack of aquatic vegetation) were not included (see Figure 2). Some human-built lagoons and small dams with lagoon character were added because they provide the same type of habitat and probably fulfil a similar ecological function as natural lagoons. Figure 2. Examples of quarries and large dams that were not included in the inventory The results obtained from the aerial photography were compared to topographic maps at a scale of 1:50,000 and 1:100,000, depending on availability. Wherever applicable, a lagoons official name was used as spelled on the maps. All water bodies that included the word Lagoon in their official name were included in the inventory, regardless of their features. The location of each lagoon was marked near its centre and its boundary was traced to calculate perimeter and area. The extent of a lagoon was defined by a change from aquatic to terrestrial vegetation (Figure 3).


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