New rules or old concepts? The golden jackal (Canis aureus) and its legal status in Central Europe

Ecotones in the Spotlight-Habitat Selection of the Golden Jackal (Canis aureus Linnaeus, 1758) in the Agricultural Landscapes of Central Europe

The large-scale expansion of the golden jackal (Canis aureus) across Europe in recent decades has been strongly influenced by its successful space and habitat use. In this study, we analyzed the habitat selection of seven golden jackals tracked with GPS collars between 15 March 2021 and 25 November 2022 in a predominantly agricultural landscape in the southwestern part of the Pannonian Basin, Central Europe. Animals were tracked for an average of 29 weeks, and GPS collars recorded a total of 29,840 hourly localization points, which were compared to a high-resolution land cover dataset. We found that golden jackals maintain smaller home ranges in agricultural landscapes than in more pristine environments. Based on Jacobs' index values calculated for monthly habitat preferences and the distribution of distances from land cover edges, we also found that preferences for the various habitat types differed significantly among individuals. Most of the time, golden jackals stayed near the edges of forests, agricultural lands, and shrublands, while they stayed away from artificial areas, wetlands, and water bodies. Forests and shrublands providing cover and safety were generally preferred by the golden jackals, especially during breeding and pup-rearing periods, while there was a strong avoidance of agricultural lands in general. Overall, our findings suggest that despite individual differences in the availability of habitat types within home ranges, forest-agricultural ecotones with relative proximity to food and shelter play a key role in the habitat selection of golden jackals.

The emerging invasive species and climate-change lexicon

The rapid diversification of terminology associated with invasion ecology is a known barrier to effective communication and management. These challenges are magnified by the addition of terms and concepts related to climate-induced range-shifting taxa and/or changes to impacts. Further, institutional policies and terminologies for invasive species introduce new ambiguities when considering climate change. To alleviate communication and application challenges, we introduce a conceptual framework that organizes climate-related invasion terms, revealing ambiguities and gaps. Additionally, we illustrate how these ambiguities can affect management with four case studies and consider situations where resolution can improve policy and management outcomes. The framework can help users avoid inconsistent use of terminology, and prioritize when to address management and policy consequences related to associated terminological ambiguity.

Launching Austria's One Health network: paving the way for transdisciplinary collaborations

In the post-COVID-19 era, stakeholders, including policymakers, funders, and the public, are increasingly seeking for a cross-sectoral systems-based approach to health risks extending beyond conventional measures. Anchored on three health pillars -human, animal, and environmental- One Health offers a promising framework to effectively address this demand. While some nations have already implemented national One Health strategic plans, European countries, in general, are lagging behind the global agenda. On 22 February 2024, an initiative was launched in Austria toward addressing this gap, bringing together multiple sectors and disciplines, marking the initial step in creating a national One Health network. The workshop emphasized the importance of enhancing One Health education and addressed key topics, such as incorporating the environmental pillar of One Health as well as socio-economic and cultural drivers to further our understanding of outbreaks, and establishing trusted communication channels, including data sharing, between disciplines and sectors. Identified challenges encompassed the need for more funding of transdisciplinary research. Opportunities for advancement include initiating local One Health projects and showcasing their positive impacts. Moving forward, efforts will focus on establishing a mature and globally connected One Health framework in Austria and supporting the integration of One Health aspects into education curricula, research programs, and policies.

From invaders to residents: The golden jackal (Canis aureus) expansion in Hungary since the mid-1990s

The golden jackal has rapidly expanded across Europe in recent decades and was one of the first to reappear in Hungary. Using hunting bag data from the National Game Management Database from 1995 to 2021, we examined the spatial expansion of the species and its population dynamics. Our findings reveal an exponential increase in the golden jackal population since the mid-1990s, with an average annual growth rate of 40% in the hunting bag and an occupancy of 86% of the country. The average speed of the range expansion was 536.9 km2 year-1 until 2007 and increased to an average of 5,289.1 km2 year-1 during the second part of the expansion process. The density of shot golden jackals also shows an increasing trend with a substantial presence of outliers, indicating that nearly 10% of the hunting bag demonstrates exceptionally high numbers, particularly in southwestern Hungary. The spread originated in the southwest and extended towards the northeast and northwest. However, the increase of the hunting bag slowed down and the expansion rate has decreased in the previous two years, leading us to anticipate that the golden jackal population will stabilize soon, as the expansion has reached its maximum in Hungary. This indicates that from the initial settlement to the stabilization of the population, the time span can be two to three decades.

First documentation of golden jackal (Canis aureus) reproduction in Germany

The golden jackal (Canis aureus), a mesocarnivore, is currently expanding from eastern towards western Europe. Reproduction of the species could be confirmed in several areas in central Europe in recent years. This study collects the first records of golden jackal reproduction in Germany in 2021 and 2022. A family group of at least five individuals could be confirmed using camera traps and scat surveys with a trained detection dog and subsequent genetic identification in 2021. In 2022, camera traps confirmed a second reproduction in the same area.