A case study, for your consideration

DELWP completed its management burn at Kemp’s Track in the Fryers Nature Conservation reserve in the last week of March. It was one of four significant department fires in this region.

We had a look at the site on April 11. It’s hard to get an overall sense of a 260 hectare site, in which the impact of fire varied from very severe to very mild, with some areas untouched.

We have two distinct impressions of the fire zone, however:

First, that, as is common in these cases, large trees have been felled as a result of the fire. This is not supposed to happen.

Unusually large habitat trees felled as a result of the Kemps Track burn. One of these is a Swamp Gum, unusual in this region.

Large trees victims of the burn. The very big Yellow Box in the centre may survive.

 

Second, areas which we supposed to be low fuel zones—for example, grassy riparian zones—were burned. We don’t see the point of this.

Mossy creekline burned in the fire. We were curious about its fate–see our March 28 post. This area did not need ‘fuel reduction’.

What is the Department’s view of these two questions? According to the Code, it should be publicly available.

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The information should be easily available

So: what was the exact fire coverage at Kemp’s track? And what ecological positives and negatives were achieved in the exercise?

The Code of Practice requires that

‘Monitoring programs will also focus on:

  • mapping the extent and severity of bushfires and planned burns‘ [paragraph 212] [FOBIF emphasis]

It also requires that

‘The Department will make publicly accessible information about:

  • the performance of its bushfire management actions, and the status of achievements of strategies and objectives
  • information gained from monitoring and evaluation activities’ [Paragraph 222]

Therefore it should be possible to get an exact idea of how the exercise fulfilled one of the two major aims of fire management exercises:

  • ‘To maintain or improve the resilience of natural ecosystems and their ability to deliver services such as biodiversity, water, carbon storage and forest products.’

Unfortunately the Code doesn’t specify precisely what ‘publicly accessible’ means—and, in practice, it doesn’t seem to mean much at all. It should mean: the ‘information should be published on DELWP websites.’

FOBIF will make enquiries to the Department, and report on the results.

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Dog Rocks Circuit – April 17 2022

West Side Story

This walk is completely different to last year’s walk and is both shorter and easier. However there is a reasonably solid climb from Forest Creek up to the Goldfields Track, all of it off track.

Bring plenty of water if the weather is warm.

We leave Templeton Street at 9.30 but instead if it is more convenient meet at the car park on McQuillans Road about 9.45. Contact Jeremy Holland 0409 933 046 for more information.

 

 

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The Cascades: sculpture park or work of nature?

The Cascades at Metcalfe – is this a sculpture park or a work of nature? The answer is obvious but you would be forgiven for thinking the former. Here at this mesmerising stretch of the Coliban River, organic curves and scalloped surfaces are found in one of the hardest of rocks; such is the power of incessant running water. But why does granite form these smooth shapes? Unlike sandstone or shale which have many lines of weakness, granite is relatively homogenous and is worn down to more rounded shapes (Photos 1).

But many granites are not completely homogeneous and contain lines of weakness called joints (Photos 2 & 3). The Harcourt Granodiorite has several sets of joints, some vertical and some horizontal. Quarrymen at Harcourt exploited these planes of weakness and called them the ‘easyway’. The Cascades joints are mainly vertical cracks spaced just a few metres apart and are easily visible on Google Earth. The joints run almost east-west, parallel to this part of the river, providing an easy path for the rushing water which over time eroded deep gutters (Photo 2 & 4).

Photo1: Granite typically forms nice rounded outcrops.

Photo 2: Smooth and scalloped surfaces are separated by vertical cracks called joints. Some of the joints have been eroded into deep gutters by the flowing water.

Photo 3: The straight lines in the background granite are joints and even the flat horizontal surface in the foreground is probably a joint.

Photo 4: A deep eroded gutter along one of the east-west joints.

This is the seventh post in our geology series written by Clive Willman. 

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Dialogues of the deaf 2: an example

Tarilta resident Rob Simons sent The Conversation article to local fire managers asking they consider it before undertaking the upcoming Helge Track burn. The reply he got is remarkable, in that it completely ignores the argument of the article:

‘Thanks for sending the below link to the article.

‘While there are differing views on planned burning, fire is a natural part of Victoria’s environment.

‘Victorian government legislation requires the Department of Environment, Land, Water and Planning (DELWP) to reduce the risk of damaging bushfires and to protect human life.

‘As described in the Forest Act 1958, The Chief Fire Officer, on behalf of the Secretary to DELWP, is required to carry out proper and sufficient work in State forests, national parks and on protected public land for the immediate prevention and suppression of fire and the planned prevention of fire.

‘Bushfire risk is linked to the distribution and accumulation of fuels if left untreated. DELWP, the Country Fire Authority (CFA) and stakeholders have developed strategic bushfire management plans using science, simulation tools, and local knowledge to manage this risk. These plans inform bushfire risk reduction targets and locations in the landscape where planned burns are conducted. (Bushfire Management Strategies for each region can be found on the DELWP website)

‘Through the Loddon Mallee Region Strategic Bushfire Management Plan, the Helge Track planned burn unit has been identified as an important location for burning to be applied to reduce the impact of bushfire on the community.

‘To meet its statutory requirements, DELWP intends to complete this planned burn when weather and fuel conditions are suitable.

‘While DELWP planned burns do not totally eliminate the risk and potential impacts of bushfires, they are a key part of an integrated bushfire risk management strategy to protect life, property and the environment including community education and awareness, ensuring access for firefighters and equipment and fast response to bushfires.

‘I hope the information is of assistance.’

No, the information is not of assistance. Everything in it is already well known to anyone who’s taken an interest in fire management. Worse, the letter makes no effort to deal with the matters in the Conversation article.

For the purposes of this discussion, FOBIF is not interested in taking sides in the argument. Up to now we have concentrated on trying to ensure that DELWP does what it says it will: observe the controls in its protocols, keep fires cool, look after old growth trees.

But what we’d like to see is a genuine engagement of the fire managers with the other side of that argument. That argument has been carefully put together by reputable scientists on the basis of detailed research.

Doesn’t it deserve a consideration?

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