Rethinking the mantra of biodiversity: Why the past should not determine the future

from the ABC Website The New South Wales state government has recently commenced the aerial killings of 14,000 feral horses residing in Kosciuszko National Park. The goal is to meet the legislated requirement of reducing the number of horses in the park to 3,000 by 2027. This legislation was passed because NSW has the legal mandate of protecting biodiversity and because the activities of feral horses are classified as a threat to native species, such as Corroboree frogs and broad-tooth rats. This policy illustrates the normative assumptions of conservation policy-makers, which are well-captured in Michael Soulé’s famous article, “What Is… Continue reading

Horses, camels and deer get a bad rap for razing plants – but our new research shows they’re no worse than native animals

Robert Sleep/AAP Large introduced herbivores such as feral horses and camels are often seen as “invasive” species which damage native plants. My colleagues and I published new research in Science testing this assumption and found it isn’t true. Instead, both native and introduced species of plant-eating megafauna (weighing over 45 kilos) have similar impacts on plants. The effects of introduced megafauna on plants can drive negative public sentiment towards the species. It’s time to change how we think of these animals. ……………………… The double standard of ‘harm’ It can be a shock to see the impact of feral pigs, deer,… Continue reading

New Research delves deeper into wild horse impacts on the environment

A new study that, for the first time in the Australian Alps, correlates horse density to environmental impact provides a more cost effective way to manage horses in the wild. Working in two areas of the Victorian Alps, the Bogong High Plains and the Eastern Victorian Alps, the study found that less than 1% of the Bogong High Plains and less than 18% of the Eastern Victorian Alps had significant horse impacts. Furthermore, correlation of horse density and environmental impact via a density-impact function revealed that in this study area, up to a horse density of 9 horses per square… Continue reading

A decade of Anti-Brumby rhetoric has been challenged by new research showing over 99% of Bogong High Plains and 82% of the Eastern Victorian Alps had NO impact from horses.

ABA Media Release 7 July 2023 The recent study Use of density-impact functions to inform and improve environmental out-comes of feral horse management (Berman et al. 2023), published by Wildlife Biology, has upturned negative claims about the environmental impacts of Alpine horses and how best to help native species. Central to the new research is the premise that to better manage wild horses in the environment it is important to understand the relationship between horse density and the percentage of environmental impact attributed to horses. A key finding from the density-impact work is that, in the areas studied, below a… Continue reading