Tag Archives: Torrens Island

Torrens Island

1 Oct

Torrens Island and its causeway entrance are situated over the Torrens Island Bridge at the end of The Grand Trunkway in Port Adelaide; about a 30 minute drive from Adelaide’s CBD. The island is closed to the public but the small breakwater and causeway are open. Most of the island is a conservation park with the remaining area housing the power stations and some historic sites.

Road across breakwater looking back at hills

The island if flat and covered with mangroves, samphire and saltbush. The causeway has no vegetation. The mangroves that are accessible from the causeway and road are actually situated on Garden Island. The causeway forms a barrier between the Angas inlet on the left and the warm water outlet from the power station on the right as you face the power station.

Black-shouldered Kite perched on light pole

Numerous fish species including bream, mullet, whiting and Mulloway are attracted to the warm water. In turn, predatory birds such as: herons, pelicans, terns, gulls, cormorants and egrets are found in this area. Small mangrove crabs are found under the rocks in the intertidal region. Dolphins are not uncommon and best spotted from the bridge.  A population of common rats live among the rocks feeding on discarded bait but they are rarely seen during daylight hours.

Little Egret hunting near mangroves

The dominant vegetation seen from the causeway is the Grey Mangrove with small amounts of samphire. At low tide there are seagrass meadows visible through the fencing on the mudflats to the left facing the power station.

Mangrove leaves and fruit….note the waxy top and rough, paler underside where salt crystals accumulate.

Prior to European settlement the mangrove and samphire swamp areas were a rich hunting and gathering region for the local Kaurna people. They would have caught crabs and speared or netted fish as well as collecting shellfish.

Torrens Island power station

Torrens Island was named after Robert Torrens senior who was chairman of the SA Colonisation Commission. Between 1870 and 1980 it was a quarantine station for both animals and people entering the state. During World War 1 the island was used as an internment camp for citizens of German and Austrian backgrounds. Since 1963 much of the island and surrounding water have been protected areas and part of different marine reserves. Three power stations are operating on the island: Torrens Island PS since 1963, Quarrantine PS since 2002 and finally Barker Inlet PS since 2009. All are gas powered.

Fishing as the sun goes down

Fishing from the rocky causeway in the warm water outlet is popular. There are fine views of the ships’ graveyard and its wrecks from the bridge. Tours of the old quarantine facilities can be arranged through the maritime museum in Port Adelaide. In short, quite an interesting place to visit and combine with a day at Port Adelaide.

Cheers

Baz

Additional notes

This is an easy destination to visit and is quite suitable for families and seniors.

Please pass on this blog title and or contact information (URL) to any person or organisation with an interest in taking walks and enjoying wildlife in SA.

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Barker Inlet and Greenfields Wetlands …a road trip

23 Feb

Barker Inlet and Greenfields Wetlands ….a road trip

Dear Reader:

As I cruise along the highway between Port Adelaide and Salisbury a succession of lagoons, ponds and wetlands flash past my windscreen. Over the last couple of decades this once industrial wasteland has become a haven for wildlife and an integral part of the system converting run off into clean water that flows back into the ocean.

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Torrens island power station looms behind the wetlands

 

There are several parking bays along the way that provide vantage points and access to walking paths into the wetlands. In rather an anomalous environmental scene the first one that I explore has the Torrens Island Power Station as a backdrop. And, a family of maned ducks are sheltering amongst the reeds in the foreground.

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Maned ducks

 

I drive another couple of kilometres to a large siding where two 4WD vehicles with council logos on them are parked by a path into the wetlands. A small group of volunteers are working on clearing weeds, counting bird species and making other environmental observations about the health of the ecosystem.

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Those who care

 

Leaving the voluntary workers to their work I find the next promising entrance and park my car. A sign indicates that we have moved into the Greenfields Wetlands. The track leads to an old bridge then follows an embankment along the edge of a small lake. The twittering of wrens provides a constant sound track as I scan for water fowl and reptiles along the edge of the reeds. There are coots, swamp hens and Pacific black ducks as well as turtles and water skinks along this section of wetland but it is a glorious little blue wren draws the attention of my long lens.

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Male superb blue wren

 

The watercourse ends in a sluice gate that regulates water flow between the ponds and on one side I can see the swirl and splash of large fish feeding in the shallows. They are carp, an unwelcome guest in any ecosystem and their eradication is probably another task for the council and other environmental protection agencies that watch over these important resources.

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Carp feeding in the shallows

 

My final stop, just before the salt pans is particularly fruitful as there is a mixed population of black swans, herons and spoonbills feeding in a shallow lagoon. It is always interesting to observe these quite diverse species with their individual feeding styles and uniquely evolved body parts. Their beaks, legs and feet have developed unique characteristics over time for feeding in the same area but utilising different food sources and therefore not competing.

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A mixed group of waterbirds

 

And, as is so often the case, my thoughts also turn to food. The Watershed Cafe, just over the bridge, is opportunely positioned on another part of the Greenfields system near Mawson Lakes. Sitting on the edge of a reed fringed lake it is the perfect place for coffee and cake at the end of my wetlands drive.

 

Cheer

Baz

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