Franz Speta
Speta; F. Speta
December 22, 1941 – December 05, 2015
botanist, non-fiction writer
Austrian botanist (1941-2015)
http://www.wikidata.org/entity/Q86532
https://en.wikipedia.org/wiki/Franz_Speta [View]
Science Enabled by Specimen Data
Han, T., Q. Zheng, R. E. Onstein, B. M. Rojas‐Andrés, F. Hauenschild, A. N. Muellner‐Riehl, and Y. Xing. 2019. Polyploidy promotes species diversification of Allium through ecological shifts. New Phytologist 225: 571–583. https://doi.org/10.1111/nph.16098
Despite the role of polyploidy in multiple evolutionary processes, its impact on plant diversification remains controversial. An increased polyploid frequency may facilitate speciation through shifts in ecology, morphology, or both. Here we used Allium to evaluate (1) the relationship between intras…
Rotllan-Puig, X., and A. Traveset. 2019. Determining the Minimal Background Area for Species Distribution Models: MinBar PACKAGE. https://doi.org/10.1101/571182
One of the crucial choices when modelling species distributions using pseudo-absences approaches is the delineation of the background area to fit the model. We hypothesise that there is a minimum background area around the centre of the species distribution that characterizes well enough the range o…
Schubert, M., L. Grønvold, S. R. Sandve, T. R. Hvidsten, and S. Fjellheim. 2019. Evolution of Cold Acclimation and Its Role in Niche Transition in the Temperate Grass Subfamily Pooideae. Plant Physiology 180: 404–419. https://doi.org/10.1104/pp.18.01448
The grass subfamily Pooideae dominates the grass floras in cold temperate regions, and has evolved complex physiological adaptations to cope with extreme environmental conditions like frost, winter and seasonality. One such adaptation is cold acclimation, wherein plants increase their frost toleranc…
Wan, J.-Z., Z.-X. Zhang, and C.-J. Wang. 2019. Effects of ecoregional vulnerability on habitat suitability of invasive alien plants: an assessment using 13 species on a global scale. Environmental Earth Sciences 78. https://doi.org/10.1007/s12665-019-8186-3
The development of new hypotheses can promote the explanation of mechanisms on plant invasion across different scales. We tested the hypothesis that ecoregional vulnerability can affect habitat suitability of invasive alien plants (IAPs) in non-native ranges. We used 13 IAPs, distributed around the …
Karger, D. N., M. Kessler, O. Conrad, P. Weigelt, H. Kreft, C. König, and N. E. Zimmermann. 2019. Why tree lines are lower on islands—Climatic and biogeographic effects hold the answer J. Grytnes [ed.],. Global Ecology and Biogeography 28: 839–850. https://doi.org/10.1111/geb.12897
Aim: To determine the global position of tree line isotherms, compare it with observed local tree limits on islands and mainlands, and disentangle the potential drivers of a difference between tree line and local tree limit. Location: Global. Time period: 1979–2013. Major taxa studied: Trees. Method…
Phillips, J., K. Whitehouse, and N. Maxted. 2019. Anin situapproach to the conservation of temperate cereal crop wild relatives in the Mediterranean Basin and Asian centre of diversity. Plant Genetic Resources: Characterization and Utilization 17: 185–195. https://doi.org/10.1017/S1479262118000588
Cereal crops are one of the most widely consumed and most valuable crops for humankind. The species have been domesticated for over 10,000 years and as such have lost much of the genetic diversity that is present within their wild relatives. Future breeding efforts will require the use of genetic di…
Sheppard, C. S., and F. M. Schurr. 2018. Biotic resistance or introduction bias? Immigrant plant performance decreases with residence times over millennia. Global Ecology and Biogeography. https://doi.org/10.1111/geb.12844
Aim: Invasions are dynamic processes. Invasive spread causes the geographical range size of alien species to increase with residence time. However, with time native competitors and antagonists can adapt to invaders. This build‐up of biotic resistance may eventually limit the invader’s performance an…
Wan, J.-Z., C.-J. Wang, and F.-H. Yu. 2019. Large-scale environmental niche variation between clonal and non-clonal plant species: Roles of clonal growth organs and ecoregions. Science of The Total Environment 652: 1071–1076. https://doi.org/10.1016/j.scitotenv.2018.10.280
Clonal plant species can produce genetically identical and potentially independent offspring, and dominate a variety of habitats. The divergent evolutionary mechanisms between clonal and non-clonal plants are interesting areas of ecological research. A number of studies have shown that the environme…
Ashraf, U., M. N. Chaudhry, S. R. Ahmad, I. Ashraf, M. Arslan, H. Noor, and M. Jabbar. 2018. Impacts of climate change on Capparis spinosa L. based on ecological niche modeling. PeerJ 6: e5792. https://doi.org/10.7717/peerj.5792
Recent changes in climate are transforming the situation of life on Earth, including impacting the conservation status of many plant and animal species. This study aims to evaluate potential impacts of climate change on a medicinal plant that is known to be heat-tolerant, Capparis spinosa L. We used…
Inman, R., J. Franklin, T. Esque, and K. Nussear. 2018. Spatial sampling bias in the Neotoma paleoecological archives affects species paleo-distribution models. Quaternary Science Reviews 198: 115–125. https://doi.org/10.1016/j.quascirev.2018.08.015
The ability to infer paleo-distributions with limited knowledge of absence makes species distribution modeling (SDM) a useful tool for exploring paleobiogeographic questions. Spatial sampling bias is a known issue when modeling extant species. Here we quantify the spatial sampling bias in a North Am…