Viewing: May, 1997

May 30

May 30, 1997

Brighton Jetty South Australia - David Muirhead

Brighton Jetty clean-up dive and stormwater sump unveiling

We held our Clean Up Australia Day dive at the new Brighton jetty in March this year. There were strong south-westerlies and the seas were rough. We only had four divers but several other members were keen to assist with the clean up. The four divers entered from the shore and swam to the outer end of the new jetty... Read more

Posted in Jetties, Stormwater | By

May 30

May 30, 1997

Corals & Sponges

Growing A Mineral Base For Coral Growth

The January 17 issue of “Australian Doctor” told of the use of electricity to create a base that coral could grow on. Dr Karl Kruszenelnicki’s “Wierd Science” column tells how magnesium and calcium-based minerals build up when electricity is passed through sea water. A layer of minerals 20cm thick took three years to build up. These acted as a base... Read more

Posted in Coral | By

May 30

May 30, 1997

Coobowie Bay 2013

Algal Bloom in Coobowie Bay

Coobowie Bay has a bloom of Enteromorpha, a fine leaved form of “cabbage weed” which is prolific in areas of sewage effluent like Bolivar. Coobowie is a low lying township with many blocks inundated or close to inundation at king tides. The impact of this seawater level on septic effluent dispersal has been shown this year with warm weather suitable... Read more

Posted in Algal blooms, Aquaculture | By

May 30

May 30, 1997

Southern Bluefin Tuna (Carl Charter)

Red Tides and Blue Farming Don’t Mix

This week marks the first anniversary of the Boston Bay (Port Lincoln) massive tuna deaths. Yet the SA Conservation Council asks – are we any better off 12 months later? Have we learnt any lessons from this avoidable disaster? In April 1996, organic wastes and nutrients from the faecal wastes from the 66 caged tuna farms contributed to a phytoplankton... Read more

Posted in Algal blooms, Aquaculture | By

May 30

May 30, 1997

Urrbrae wetlands 2014

The effect of wetlands as a means of reducing nutrients, sediments and bacteria from stormwater

Last month I read with concern a report of a talk about wetlands which was reported not to have mentioned stormwater. I was at the talk and remember a map of the drainage system for Adelaide being shown but I guess, like the speaker, I assumed that WETLANDS ARE ALL ABOUT STORMWATER. Wetlands have a threefold function. They remove 80-90%... Read more

Posted in Stormwater, Wetlands | By

May 30

May 30, 1997

Seahorses

Seahorse Sightings at Brown’s Beach, Yorke Peninsula

MLSSA member Ron Bellchambers recently told us about sighting 18 White’s Seahorses during a dive at Brown’s Beach, Innes National Park, Yorke Peninsula. Ron and his family were diving behind the reef at Brown’s Beach on February 23rd. There they counted 18 White’s Seahorses floating on broken ‘sea branches’. Locals at Third Beach, Port Victoria, Yorke Peninsula have told Ron... Read more

Posted in Syngnathids | By

May 30

May 30, 1997

Port Minlacowie jetty 1916 - State Library of South Australia B32231

Port Minlacowie Jetty

Over Easter in 1988 twelve society members dived at the site of the old jetty at Port Minlacowie. We followed the stumps of the old jetty piles out to the end. We managed to find some broken bits of old steamship crockery and even an intact crew plate. The jetty had been built in 1877 at a cost of 4,759... Read more

Posted in Jetties, Maritime History | By

May 30

May 30, 1997

Leafy Sea Dragon

“The Dragon Lives” art exhibition opening

David Muirhead attended the opening of “The Dragon Lives”, the seadragon art exhibition at Semaphore. He was thrilled to be presented with a certificate of appreciation for his support of Dragon Search. He also received a full colour Syngnathid poster. Noeleen and I visited the seadragon art exhibition on its last day. We enjoyed viewing the numerous paintings, ceramics, photographs... Read more

Posted in Art & Culture, Syngnathids | By