Publications by authors named "Hannes Gaisberger"

Article Synopsis
  • - Understanding how populations of tree species diverge and adapt involves exploring factors like history, gene flow, and natural selection, especially in non-model species.
  • - Researchers sequenced the genomes of two closely related tree species, Liquidambar formosana and L. acalycina, to study their divergence and adaptation in subtropical China, revealing a history of allopatric divergence followed by contact.
  • - The study identified genetic regions linked to environmental adaptation and reproductive isolation, providing insights into how historical climatic changes shaped the evolution of East Asia's flora and setting the stage for future research in conservation and breeding.
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In the billion-dollar global illegal wildlife trade, rosewoods have been the world's most trafficked wild product since 2005. and are the most sought-after rosewoods in the Greater Mekong Subregion. They are exposed to significant genetic risks and the lack of knowledge on their adaptability limits the effectiveness of conservation efforts.

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Tree diversity in Asia's tropical and subtropical forests is central to nature-based solutions. Species vulnerability to multiple threats, which affect provision of ecosystem services, is poorly understood. We conducted a region-wide, spatially explicit assessment of the vulnerability of 63 socioeconomically important tree species to overexploitation, fire, overgrazing, habitat conversion, and climate change.

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Understanding the vulnerability of tree species to anthropogenic threats is important for the efficient planning of restoration and conservation efforts. We quantified and compared the effects of future climate change and four current threats (fire, habitat conversion, overgrazing and overexploitation) on the 50 most common tree species of the tropical dry forests of northwestern Peru and southern Ecuador. We used an ensemble modelling approach to predict species distribution ranges, employed freely accessible spatial datasets to map threat exposures, and developed a trait-based scoring approach to estimate species-specific sensitivities, using differentiated trait weights in accordance with their expected importance in determining species sensitivities to specific threats.

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The evolutionary history of African savannah tree species is crucial for the management of their genetic resources. In this study, we investigated the phylogeography of Parkia biglobosa and its modeled distribution under past and present climate conditions. This tree species is very valued and widespread in West Africa, providing edible and medicinal products.

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Article Synopsis
  • Agroforestry parklands in Burkina Faso are under threat from demographic and climatic pressures, putting indigenous tree species, vital for income and nutrition, at risk.
  • A study identified 16 key food tree species and analyzed six major threats, including climate change and overexploitation, to prioritize conservation efforts.
  • Recommendations include using tree populations from 'highly threatened' areas for ex situ conservation and suggesting assisted regeneration for trees in suitable habitats facing immediate threats.
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Conservation priorities for Prunus africana, a tree species found across Afromontane regions, which is of great commercial interest internationally and of local value for rural communities, were defined with the aid of spatial analyses applied to a set of georeferenced molecular marker data (chloroplast and nuclear microsatellites) from 32 populations in 9 African countries. Two approaches for the selection of priority populations for conservation were used, differing in the way they optimize representation of intra-specific diversity of P. africana across a minimum number of populations.

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