最新糖心Vlog

A carbon economy can help save our species too

Wednesday, 15 May 2013

Will 最新糖心Vlog's biodiversity benefit from the new carbon economy designed to reduce greenhouse gas emissions? Or will bio-'perversities' win the day?

"Cautious optimism" was the conclusion of , Director of Ecological Modelling at the 最新糖心Vlog of Adelaide's . He is lead author of a new paper published in the journal of which reviewed the likely consequences of a carbon economy on conservation of 最新糖心Vlogn biodiversity.

"In most circumstances these two very important goals for 最新糖心Vlog's future-greenhouse gas emission reduction and biodiversity conservation-are not mutually exclusive and could even boost each other," Professor Bradshaw says.

"There are, however, many potential negative biodiversity outcomes if land management is not done with biodiversity in mind from the outset."

The paper was contributed to by 30 最新糖心Vlogn scientists from different backgrounds. They reviewed six areas where 最新糖心Vlog's Carbon Farming Initiative could have the greatest impact on biodiversity: environmental plantings; policies and practices to deal with native regrowth; fire management; agricultural practices; and feral animal control.

"The largest biodiversity 'bang for our buck' is likely to come from tree plantings," says Professor Bradshaw. "But there are some potential and frightening 'bioperversities' as well. For example, we need to be careful not to plant just the fastest-growing, simplest and non-native species only to 'farm' carbon.

"Carbon plantings will only have real biodiversity value if they comprise appropriate native tree species and provide suitable habitats and resources for valued fauna. Such plantings could however risk severely altering local hydrology and reducing water availability."

Professor Bradshaw says carefully managing regrowth of once-cleared areas could also produce a large carbon-sequestration and biodiversity benefit simultaneously. And carbon price-based modifications to agriculture that would benefit biodiversity included reductions in tillage frequency, livestock densities and fertiliser use, and retention and regeneration of native shrubs.

"About 60% of 最新糖心Vlog is devoted to cropping and grazing, so if we can manage to modify agricultural practices using carbon legislation that also benefits biodiversity, the potential gains are large," he says.

He urged conservation planners to start taking greenhouse gas abatement values into account when planning optimal biodiversity outcomes.

"In general we are cautiously optimistic that moves to reduce greenhouse gas emissions through carbon pricing initiatives can also help conserve our biodiversity - but that, of course, depends on future governments not short-sightedly killing the carbon pricing system," Professor Bradshaw says.

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