Jennifer Marohasy

a forum for the discussion of issues concerning the natural environment

Archives for May 10, 2013

Haven’t Lost Half of the Great Barrier Reef: Part 2, Junk Methodology

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HOW could scientists conclude that half of the Great Barrier Reef has been lost in the last 27 years: target coral reefs most affected by cyclones, coral bleaching and crown-of-thorn starfish outbreaks, while ignoring more representative reefs with healthy corals. And I didn’t make that up! It’s documented in a peer-reviewed study by H. Sweatman, S. Delean and C. Syms entitled: ‘Assessing loss of coral cover on Australia’s Great Barrier Reef over two decades, with implications for longer-term trends’ [1].

Indeed the claim that there has been a 50 per cent decline in coral cover at the Great Barrier Reef appears to be largely an artifice of the survey method. In particular, coral reefs most severely affected by bleaching in 1998, and reefs disproportionally affected by crown-of-thorn starfish outbreaks, and also reefs with insufficient time to recover from cyclones in 2009 and 2011 were targeted for repeated sampling, while more representative reefs with healthy corals were ignored.

In part 1 of this series, I reported that the World Heritage Centre will demand action by the Australian Government to spend vast sums of taxpayers’ funds to address this manufactured issue, or have the Great Barrier Reef placed on its World Heritage in Danger List. This demand is a recommendation of the United Nation’s International Union for the Conservation of Nature, UNESCO, in its State of Conservation report prepared for the June meeting of the UNESCO committee [2], which in turn is based upon a report of the environmental lobby groups WWF and the Australian Marine Conservation Society, whose report [3] in turn relies on the claims of a peer reviewed study by Glenn De’ath and co-workers [4].Outer Barrier Reef, Photograph by Walter Starck

The paper by De’ath and co-workers published in the US Proceedings of the National Academy of Sciences in 2012 [5] does indeed claim a 50 per cent decline in coral cover based on 27 years of data from the Australian Institute of Marine Sciences (AIMS) Long-Term Monitoring Program. [Read more…] about Haven’t Lost Half of the Great Barrier Reef: Part 2, Junk Methodology

Undemocratic Politics Again Determines Land Use in Tasmania: Alan Ashbarry

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A decision made in Cambodia in June by the United Nation’s World Heritage committee could add 172,000 hectares of forest to the Tasmanian Wilderness World Heritage Area. The Gillard government is seeking to have the deal sealed without proper scrutiny, in particular by using a loophole in the UN guidelines to label it as a “minor” modification so it can be approved before a likely change of government in September.

The proposal for a “minor” boundary modification was developed by the Federal minister for the Environment, Tony Burke, as part of the outcomes of the Tasmanian Forest Agreement signed between three main environmental lobby groups and industry representatives on 22 November 2012. The industry signed up with the hope the proposal would end years of campaigning against the Tasmanian forest industry.

Photography by Jennifer Marohasy, Tasmania , May 2005
Photography by Jennifer Marohasy, Tasmania , May 2005

The World Heritage area has been controversial since it was first inscribed in 1982 when only 769,355 ha in size, and led to the 1983 Australian High Court ruling that the Commonwealth’s external relations powers gave it the right to prevent the flooding of the Franklin River for a renewable Hydro power scheme, not withstanding Tasmania’s constitutional land use rights.

It was the subject of the Commonwealth’s Helsham inquiry in the late 1980’s that examined the need for a further extension to the wilderness. The majority finding was overturned by the Hawke government, and a proposal adding 604,645 ha, i.e. a 78 per cent increase, was accepted by the World Heritage Committee. The extension was said by the environment Minister Graham Richardson to cement the green preference strategy to re-elect the Hawke ALP government. [Read more…] about Undemocratic Politics Again Determines Land Use in Tasmania: Alan Ashbarry