Suchergebnisse

The global effort to conserve threatened species relies heavily on our ability to separate these species from the processes that threaten them, and a common tool used for this purpose is exclusion fencing. In Australia, pest animal exclusion fencing has been repeatedly used on conservation land on a small scale to successfully exclude introduced predators and competitors from threatened native fauna populations. However, in recent years, "cluster fencing" on agricultural land has re-emerged on a large scale and is used by livestock producers seeking to reduce predation losses by dingoes (Canis familiaris) and manage total grazing pressure from native and introduced herbivores, including red kangaroos (Osphranter rufus). Given that the primary threats to at-risk native fauna are also predation and overgrazing, there may be potential for cluster fencing on livestock land to achieve additional fauna conservation benefits. Understanding the amount, location and potential conservation value of cluster fenced livestock land is critical for determining how these areas might contribute to broader threatened fauna recovery goals. Drawing from publicly available databases maintained by the Australian Government, we assessed the spatial overlap of threatened species' distributions with 105 cluster fences erected in Queensland since 2013, which cover 65,901 km2 of land. These cluster fenced areas represent 18 biogeographic subregions and may contain 28 extant threatened mammals, birds and reptiles including 18 vulnerable species, 7 endangered species and 3 critically endangered species. An average of nine threatened species or their habitats were identified per cluster, and over three quarters (78.6%) of these species face at least one threat that is being mitigated within clusters. The true status of threatened and pest species within clusters is largely unknown or unrecorded in most cases, but some examples of pest eradication and threatened species recovery are already emerging. Given the vast size of the cluster fenced estate, the many different biomes and species that it represents and the nature of the threats being removed within these fenced areas, we contend that agricultural cluster fencing may offer an unprecedented opportunity to advance threatened fauna conservation goals for some species at scales previously thought impossible and should be a research priority for threatened species managers.

Climate change is an emerging threat for biodiversity conservation. It has already started impacting species assemblages and ecosystem dynamics. The greater one-horned rhinoceros (Rhinoceros unicornis) is an iconic and globally threatened megaherbivore. Once widespread across the northern part of the Indian subcontinent, there were fewer than 500 rhinoceros during the early 1960s, confined to isolated patches of suitable habitats in the southern part of Nepal and northern foothills of India, including Brahmaputra floodplains. Following both governments' successful conservation strategies, the species has been recovering, and its global population at present is over 3500. However, the likely impacts of climate change has not been adequately incorporated into conservation plans for the species and may challenge this success. In this study, we developed a set of 21 vulnerability indicators and assessed the vulnerability of rhinoceros to climate change in Nepal through a review of literature, site observations of prime rhinoceros habitat, key informant interviews, a two-day stakeholders' consultation workshop, and expert elucidation. Our findings suggest that rhinoceros in Nepal is likely to be 'moderately vulnerable' to the impacts of climate change, mainly due to (1) the likelihood of invasive plant species and severe floods in its prime habitat 'Chitwan National Park', and (2) fragmented habitat, small population size, droughts and forest fires in Bardia and Shuklaphanta National Parks. We further identified and recommended adaptation measures intended to enhance the resilience of rhinoceros to these likely threats.

Compassionate conservation focuses on 4 tenets: first, do no harm; individuals matter; inclusivity of individual animals; and peaceful coexistence between humans and animals. Recently, compassionate conservation has been promoted as an alternative to conventional conservation philosophy. We believe examples presented by compassionate conservationists are deliberately or arbitrarily chosen to focus on mammals; inherently not compassionate; and offer ineffective conservation solutions. Compassionate conservation arbitrarily focuses on charismatic species, notably large predators and megaherbivores. The philosophy is not compassionate when it leaves invasive predators in the environment to cause harm to vastly more individuals of native species or uses the fear of harm by apex predators to terrorize mesopredators. Hindering the control of exotic species (megafauna, predators) in situ will not improve the conservation condition of the majority of biodiversity even if compassionate conservationists do no harm to individuals of the exotic species. The positions taken by so‐called compassionate conservationists on particular species and on conservation actions could be extended to hinder other forms of conservation, including translocations, conservation fencing, and fertility control. Animal welfare is incredibly important to conservation, but ironically compassionate conservation does not offer the best welfare outcomes to animals and is often ineffective in achieving conservation goals. Consequently, compassionate conservation may threaten public and governmental support for conservation because of the general publics' limited understanding of conservation problems.