By Peter Vaughan | Monash University, Melbourne

Burnt river vegetation along Dinner Creek. Image: Peter Vaughan

Conservationists are concerned that fuel reduction burns in East Gippsland will threaten endangered species and reduce biodiversity.

On March 16, fire managers from the Department of Sustainability and Environment (DSE) ignited a fuel reduction burn in the Dinner Creek catchment of Waygara state forest, approximately 14 km West of Orbost.

The fire quickly gained intensity, aided by a temperature of 30 degrees Celsius. It burnt most of the environmentally sensitive vegetation within the fire zone along four kilometres of the Dinner Creek.

DSE Fire Manager for the Orbost Region, Steve de Voogd, said that the Dinner Creek fuel reduction burn grew hotter than intended.

The fire was meant to burn 2206 hectare of coastal forest and leave a mosaic of burnt and un-burnt areas within the fire’s containment lines.

According to Mr de Voogd, the DSE is now under community pressure to reduce the risk of wildfire through fuel reduction burning, and that must take precedent over ecological considerations.

“Although there is probably room for more fire ecology planning, it is incumbent on the DSE to take action because the consequences of doing nothing may be worse,” Mr de Voogd said.

Most of the hollow bearing trees in the burn zone, which were home to a number of endangered species protected under state and federal law, were destroyed.

Dr Rohan Bilney, an expert on Australian forest owls and spokesperson for the Gippsland Environment Group, said that the program intended to burn large areas of coastal forest without adequate ecological planning, monitoring or research, which threatened crucial habitat and food sources for the forest’s owls species.

“The coastal forests of East Gippsland are the strong hold of the Masked Owl, a species listed as threatened under two laws: the Victorian Flora and Fauna Guarantee Act and the Federal Environmental Protection and Biodiversity Conservation Act. Most of East Gippsland’s Masked Owls live in the coastal forests now being subjected to intense broad area fuel reduction burns by the DSE,” said Dr Bilney.

The Masked Owl Action Statement, prepared under the Victorian Flora and Fauna Guarantee Act, estimates only 150 pairs of Masked Owl exist in Victoria. Of that total, 100 pairs are found in East Gippsland and most are concentrated in the coastal forest.

DSE Manager of Biodiversity in East Gippsland, Dr Steve Henry, said that the current DSE fuel reduction fire strategy allows for large fires but burning on such a scale leaves few options for the protection of important ecological values.

“If there are some areas that contain specific environmental attributes that we want to protect, we could exclude them from fire with a bulldozer line. However that is expensive and often very destructive on most of these large burns. The main management technique used is the way in which the lighting pattern of the fire is done, sometimes that is not as effective as we would hope,” he said.

Mr Henry said that funding constraints have not permitted the DSE to conduct detailed ecological studies of the coastal forests, including the effect of fire on the environment.

A post-fire ecological survey is currently being conducted by the DSE in selected fuel reduction areas.

The Dinner Creek fire was just one of 48 fuel reduction burns planned by the DSE for the region during 2009-2010. Like other fuel reduction burns, the DSE must comply with the Victorian Code of Practice for Fire Management on Public Land.

The primary objective of the Code is to protect of life and property, while minimising negative impacts on natural and cultural values, and abiding by threatened species legislation, are also included.

The Code of Practice also states that the DSE must prepare a Fire Ecology Strategy that includes input from ecological experts and full consideration of all available scientific research.

If little ecological research exists, fuel reduction burning can be conducted under the rational that it may reduce the future risk of wildfire.

In the absence of scientific data, the DSE will continue to plan fuel reduction burns from computer desktops, utilising the ad hoc data collected as part of the Environmental Vegetation Class mapping projects of the late 1990s.

While political pressure continues to increase, the DSE fire policy will remain focused on protecting the community against the spectre of Black Saturday.