Cost-effective scat-detection dogs: unleashing a powerful new tool for international mammalian conservation biology

Recently, detection dogs have been utilized to collect fecal samples from cryptic and rare mammals. Despite the great promise of this technique for conservation biology, its broader application has been limited by the high cost (tens to hundreds of thousands of dollars) and logistical challenges of employing a scat-detection dog team while conducting international, collaborative research. Through an international collaboration of primatologists and the Chinese Ministry of Public Security, we trained and used a detection dog to find scat from three species of unhabituated, free-ranging primates, for less than $3,000. We collected 137 non-human primate fecal samples that we confirmed by sequencing taxonomically informative genetic markers. Our detection dog team had a 92% accuracy rate, significantly outperforming our human-only team. Our results demonstrate that detection dogs can locate fecal samples from unhabituated primates with variable diets, locomotion, and grouping patterns, despite challenging field conditions. We provide a model for in-country training, while also building local capacity for conservation and genetic monitoring. Unlike previous efforts, our approach will allow for the wide adoption of scat-detection dogs in international conservation biology

Adopting novel ecosystems as suitable rehabilitation alternatives for former mine sites

The nature and extent of environmental disturbance associated with mining commonly entails completely new and challenging combinations of climate, lithology and landform. Consequently, the outcomes of ecological processes associated with the recovery or restoration of ecosystems cannot be predicted reliably from previously known associations between their physical and biological components. For radically disturbed sites, we propose that it is not practicable to aim for the restoration of historical ecosystems. However, hybrid (reversibly different) or novel (irreversibly different) ecosystems comprising new combinations of physical and biological components, including both native and non-native species, could provide levels of stability and functionality acceptable to all stakeholders and within feasible management regimes. We propose that limiting physical conditions of the landscape can be identified and managed, and that alternative species combinations for introduction to these new landscapes may be considered with cautious optimism

Koala conservation in Queensland, Australia: A role for assisted gene flow for genetic rescue?

The koala is an iconic Australian marsupial that is facing declining populations through habitat loss, disease and predation. Genetic diversity is expected to decline in small, isolated populations, and this is already evident in some restricted koala populations. Gene flow among patches is essential to maintain genetic diversity, and while this can be achieved through habitat connectivity and reduction of threats, a more active approach of assisted gene flow can be considered. Here, the koala population is evaluated for its readiness to undergo purposeful movement of koalas in the processes of genetic rescue and genetic restoration. There is limited data on the fitness consequences of low genetic diversity or hybridisation in koalas, and no known adaptive alleles. However, the adaptability of the koala to captive conditions might assist a living genome bank approach