Butterflies feeding on sap

Tony Morton has sent us these observations of butterflies in Kalimna Park. The photos were taken on the west side of Kalimna, in the Castlemaine Copper patch, just above the bench, in mid-April 2012. He plans to look to see if there are any signs of a repeat performance this year. This patch of the Park is due for a management burn this autumn.

‘Sap exuding from a tree often attracts insects.  This sap was oozing quite plentifully from the tree (a young Lemon scented Gum?) at about waist height.  It was very sticky and sweetish to the taste, but without any discernible eucalypt flavour.

 

 

‘Note the many wings of female Common Browns (Heteronympha merope), trapped in the sap, heads and bodies presumably taken by European wasps, which were in attendance (far left photo). One of the butterflies was caught as I watched.

 

‘Also feeding on the sap were a couple of Four-tailed Emperors (Polyura sempronius).  You can see the Emperor’s orange proboscis (very like the Purple Emperor’s of Europe) in this photo. As they feed, head down, they shift their hindwings up and down, like a Lycaenid does.  This butterfly, endemic to Australia, is more often encountered in sub-tropical areas up the Eastern coast, but it seems to have spread south over the last decade or two.  I have occasionally seen them flying powerfully about on the Point over the last few years, but they are never common.  Flying, they look much whiter than they actually are, but they are far bigger than any other butterfly usually encountered in this area. The larvae feed on various species of Acacia.’

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Want to buy a premium penguin product?

The State Government’s decision to open National Parks to commercial development [see above] has its origins way back in the Kennett era, but surfaced more recently in a report published by the Labour Government in 2008. It’s called Victoria’s Nature based tourism strategy 2008-12 . This report was enthusiastically endorsed by then Conservation Minister Gavin Jennings and Tourism Minister Tim Holding in 2010. A critical account of it can be found here.

The report pointed out that over 28 million people visit our parks every year [a figure which puts paid to the idea that parks ‘lock out’ people]: the problem is that they don’t spend enough money. The strategy devoted its attention to ways we can attract rich people to our parks and get them to spend. Among other things it enthusiastically endorsed the idea of ‘products’: for example, it liked a ‘premium penguin viewing product’ available at Phillip Island. This involves getting people to pose for faked photos making them look as if they’re up close and personal with penguins. Similarly, the report talks, not of encourageing people to go for a walk, but of getting them to ‘buy a walk product’.

It’s worth comparing this kind of objective with the purposes of parks, as set out in the National Parks Act first passed by a Liberal Government in 1975. In this document Parks are

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FOBIF walk in Maldon Historic Reserve

A group of 20 eager bushwalkers emerged from their summer hiatus to participate in the first walk of the 2013 FOBIF calendar.  The walk was led by Chris Johnston, who has built up a considerable body of knowledge about the Maldon Historic Reserve and the Muckleford Forest. 

The walk commenced at the ruins of the Gowar School and wended its way through impressive box-ironbark forest up to Smiths Reef Dam, built in 1860.  A number of native under storey species were identified along the way.  Following a break for morning tea at Smiths Reef Dam, the group explored a number of the digging sites to the east of the dam.   

Hairy mullock heaps. Photo by Dominique Lavie

 

Photo by Dominique Lavie

A disturbed bottle dump was located with many fragments of old bottles still present.  The archaeological knowledge of one of the walkers (from Kyneton) was put to good use in describing the style of the bottles, the production processes and the possible uses.

The walk continued along the Spur Track with a marked contrast observable in the vegetation on either side of the track resulting from previous prescribed burns.

 

Photo by Frank Forster

A lunch break was taken in the lee of a large rocky outcrop providing an interesting micro-climate for small ground covers, ferns and lichen.

After lunch the group returned along Clarry’s Track and the Gowar Road, taking note of the areas designated for prescribed burns in autumn 2014.  Chris Johnston is coordinating a data collection exercise in the designated area and is seeking a few volunteers to assist in the process.  This is scheduled for Sunday 14 April;  please email mucklefordffg@bigpond.com if interested.

This walk was a great start to the 2013 program, and thanks are due to Chris Johnston for her detailed preparation and informed guidance. You can view more of Dominique Lavie’s photos by clicking on her Facebook page.

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Don’t try this yourself!

Bird netting which lies loosely on the ground can be a menace to small animals like echidnas…and also to snakes, as the picture below shows.

Doug Ralph was asked by a local to help out when a brown snake about two metres long became entangled in netting dragging on the ground.

Eastern brown snake caught in bird netting, Castlemaine: nets which drag on the ground can entangle small animals, with sometimes dangerous results.Photo: Doug Ralph

 

 

 

 

 

 

 

 

 

 

This situation isn’t good for anyone–the snake, which could die from the exhaustion of trying to get away, or any person who may lack the expertise to deal with a potentially dangerous creature.

Snake rescue: definitely not recommended for non experts. Photo: Jan Hall

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Doug’s method is illustrated above: lift the snake, cut the netting away, then put the creature in a bucket and take it out into the bush. We don’t advise anyone without the expertise to attempt this, however. The Eastern (or Common) Brown is extremely venomous, and becomes aggressive if threatened.

The moral is: don’t let your bird netting drag loosely on the ground.

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‘Castlemaine’s first environmental cause’

The curious circular earth formation pictured below isn’t a mysterious religious site. It’s a puddling wheel, and if you want to know how it used to work, check out historian Marjorie Theobald’s article ‘Commissioner Bull and the Puddling Machines: Castlemaine’s first Environmental Cause’:

Puddling machine, Cobblers Gully: Circular ditches like this, with islands in the middle, are fairly common in our district. The fallen trees are recent intrusions--natural heritage at work.

 

 

 

 

 

 

 

 

 

 

 

‘In the years 1851-1855 the area known as the Mount Alexander gold fields, about ten square miles including the towns of Castlemaine, Chewton and Fryerstown, was ransacked by the alluvial miners; no creek was left unchanged, no gully was left unscarred, no ridge was left unpierced. Concern for the environment as we understand it today did not exist. It comes as a surprise then to find that in January 1855 Resident Gold Commissioner for Castlemaine, J.E.N. Bull, took a stand on precisely these grounds: he sent to each proprietor of a puddling machine an edict that from the 31 March 1855 these machines would be banned from the main creeks in his district. This was necessary, he wrote, to safeguard the water supply of Castlemaine, the operations of the miners using cradles and Long Toms, and the health of the creeks and flats generally.’

What happened next? To find out, check Marjorie’s excellent article on the online Central Victorian Ecology blog.

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