Dragonfly Environmental

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Sydney Ports – Protecting Endangered Wildlife at Enfield

golden bell frogThe Green and Golden Bell Frog was once one of the most common frog species on Australia’s south-eastern coast, thriving in large, permanent, open-water swamps or ponds that have a variable water level and dense surrounding vegetation.

However, in recent times factors such as habitat loss and introduced predators have seen their populations decline to the point where they are now listed nationally as vulnerable and in NSW as endangered.

Plans for the Sydney Olympics site at Homebush were amended when the frogs were discovered there, leading to the relocation of the tennis courts and the establishment of new habitats for the frogs.

(Pictured right: The Enfield-Chullora site showing habit areas, frog corridors and ponds.)

Now, with small numbers of the Green and Golden Bell Frog known to be in the Enfield-Greenacre area, just south of Homebush, similar protection efforts are being incorporated into construction of Sydney Ports’ Intermodal Logistics Centre.

Working with the wetland management and restoration group Dragonfly Environmental, Sydney Ports is establishing and will be responsible for managing, a two hectare habitat of ponds, foraging areas, shelters and corridors designed as a refuge for frogs migrating to and around the Enfield-Greenacre area.

Sydney Ports Senior Project Manager, Bruce Royds says the development of the Frog Habitat Creation Area (FHCA) at Enfield will greatly assist in the conservation of Green and Golden Bell Frog populations.

“Sydney Ports has worked closely with experts in the field to develop a habitat management plan designed to ensure optimum water levels in the ponds, that the surrounding environment is kept free of weeds and unwanted vegetation and that frog movement corridors are maintained to encourage interconnectivity between colonies,” Mr Royds said.

“Secure breeding sites for the frogs are scarce, so we are establishing an environment that will mimic, as closely as possible, their natural habitat.”

“A critical part of this process will include artificially raising and lowering water levels in the ponds to emulate nature’s sporadic rainfall and the resulting cycles of full water and drying out.”

“Ultimately, we are working to create a habitat for the Green and Bell frogs that will encourage breeding, foster survival and see their numbers in the Enfield-Greenacre area increase to the point where natural migration patterns in and around the site are re-established and become the norm.”

habitat cronulla habitat cronulla 1 habitat cronulla 2

Cronulla Industrial Estate for Australand 2006-2007. Bitou bush and other noxious and environmental weeds were eradicated from works site. Works included planting of 330,000 plants in stormwater detention facilities and on dune areas. Works included creation of Green and Golden Bell Frog Habitat at the site. Work was completed within 2 months to specifications and within budget.

GGBF habitat enfield DFE


Dragonfly Environmental wetland management and restoration groupis working for Sydney Ports in establishing and managing, a two hectare habitat of ponds, foraging areas, shelters and corridors designed as a refuge for frogs migrating to and around the Enfield-Greenacre area.

Dragonfly Environmental planted the Frog breeding areas (designed by Arthur White) and is continuing to maintain the habitat areas. It’s a great project and the Dragonfly Team are proud to be caring for such important habitat.

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Doonside Reserve and Breakfast Creek for Mirvac Homes and Blacktown City Council 2004 – 2007

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Dragonfly Environmental conducted bush regeneration and hard works to restore and maintain the largest remaining stand of the Endangered Cumberland Plain Ecological Community in the Blacktown City Council Area, which comprises of 13 Hectares.  This Involved:

  • maintenance of the riparian zone and terrestrial areas of Breakfast Creek;
  • the translocation of the endangered Cumberland Plain Land Snail;
  • installation of 40,000 plants;
  • construction of 800 metres of fencing and 900 metres of pathways through the reserve;
  • installation of 1km of bollards;
  • design and placement of interpretive signage for the Reserve.

A Weed Management Report was also compiled for the site to outline targets and monitoring requirements that will be carried out by Dragonfly Environmental.

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Oldest Australian Bird!

A Fossil of a bird similar to a modern Egret has been recently discovered in Australia.  Over 1 millions years old the fossil shows the foot prints and landing marks of the bird as it glided in on the muddy ancient shore.  For more information on the fossil seen the link at the end of this page.

A million years after that birds walked the Earth Dragonfly Environmental

is working on projects to rehabilitate and re-create habitat for today’s Egrets and waterbirds.. Out work at Port Botany has include the creation of large Saltmarshes which are being visited by Migratory birds – such as the Saltmarsh creation and rehabilitation at Port Botany.

Migratory Bird Roosting Island

Recent works include the upgrading of the main island that was created for migratory birds to roost on.  High-tide roosting islands, away from disturbance, are of high importance to wading birds.  During September (before the birds come back!) Dragonfly Environmental has worked with Shore Contracting  http://www.shorecontracting.com.au/ to build up the centre of the Island by moving 11,000m3 of crushed sandstone over the sensitive mudflats and onto the Island.

migratory bird


Plus Dragonfly’s works in Wetlands rehabilitation and Creation in and around Sydney are bringing back the birds.  Including Noxious aquatic weed removal in wetlands throughout Sydney particularly Ludwigia peruviana.


So over 1million years after these ‘Egret’ type fossil foot prints were laid down we can continue to celebrate the presents of our Winged relations in the skies and on the Beaches and in the Wetlands.

For more on our projects see http://www.pittwateronlinenews.com/dragonfly-environmental-profile.php

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Cronulla Industrial Estate for Australand 2006-2007

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Dragonfly Environmental completed works at a Cronulla Industrial Estate for Australand within a two month period in 2006 and 2007. Works involved the eradication of Bitou bush and other noxious and environmental weeds from the work site, as well as the planting of 330,000 plants in stormwater detention facilities and on dune areas.