Hans Fredrik Røer
* January 11, 1945 – June 24, 1973 †
Norwegian botanist (1945-1973)
Science Enabled by Specimen Data
Bontrager, M., T. Usui, J. A. Lee‐Yaw, D. N. Anstett, H. A. Branch, A. L. Hargreaves, C. D. Muir, and A. L. Angert. 2021. Adaptation across geographic ranges is consistent with strong selection in marginal climates and legacies of range expansion. Evolution 75: 1316–1333. https://doi.org/10.1111/evo.14231
Every species experiences limits to its geographic distribution. Some evolutionary models predict that populations at range edges are less well‐adapted to their local environments due to drift, expansion load, or swamping gene flow from the range interior. Alternatively, populations near range edges…
Zhang, Y., J. Chen, and H. Sun. 2021. Alpine speciation and morphological innovations: revelations from a species-rich genus in the northern hemisphere N. Rajakaruna [ed.],. AoB PLANTS 13. https://doi.org/10.1093/aobpla/plab018
Background and Aims A large number of studies have attempted to determine the mechanisms driving plant diversity and distribution on a global scale, but the diverse and endemic alpine herbs found in harsh environments, showing adaptive evolution, require more studies. Methods Here, we selected 466 s…
Rock, B. M., and B. H. Daru. 2021. Impediments to Understanding Seagrasses’ Response to Global Change. Frontiers in Marine Science 8. https://doi.org/10.3389/fmars.2021.608867
Uncertainties from sampling biases present challenges to ecologists and evolutionary biologists in understanding species sensitivity to anthropogenic climate change. Here, we synthesize possible impediments that can constrain research to assess present and future seagrass response from climate chang…
Nygaard, M., P. Kemppainen, J. D. M. Speed, R. Elven, K. I. Flatberg, L. P. Galten, N. Yousefi, et al. 2021. Combining population genomics and ecological niche modeling to assess taxon limits between Carex jemtlandica and C. lepidocarpa. Journal of Systematics and Evolution 59: 627–641. https://doi.org/10.1111/jse.12743
Carex section Ceratocystis (Cyperaceae) is a group of recently evolved plant species, in which hybridization is frequent, introgression is documented, taxonomy is complex, and morphological boundaries are vague. Within this section, a unified taxonomic treatment of the C. jemtlandica‐C. lepidocarpa …
Saldaña‐López, A., M. Vilà, F. Lloret, J. Manuel Herrera, and P. González‐Moreno. 2021. Assembly of species’ climatic niches of coastal communities does not shift after invasion Z. Botta‐Dukát [ed.],. Journal of Vegetation Science 32. https://doi.org/10.1111/jvs.12989
Question: Do invasions by invasive plant species with contrasting trait profiles (Arctotheca calendula, Carpobrotus spp., Conyza bonariensis, and Opuntia dillenii) change the climatic niche of coastal plant communities? Location: Atlantic coastal habitats in Huelva (Spain). Methods: We identifi…
Géron, C., J. J. Lembrechts, J. Borgelt, J. Lenoir, R. Hamdi, G. Mahy, I. Nijs, and A. Monty. 2021. Urban alien plants in temperate oceanic regions of Europe originate from warmer native ranges. Biological Invasions 23: 1765–1779. https://doi.org/10.1007/s10530-021-02469-9
When colonizing new areas, alien plant species success can depend strongly on local environmental conditions. Microclimatic barriers might be the reason why some alien plant species thrive in urban areas, while others prefer rural environments. We tested the hypothesis that the climate in the native…
Pérez‐Navarro, M. Á., J. M. Serra‐Diaz, J. Svenning, M. Á. Esteve‐Selma, J. Hernández‐Bastida, and F. Lloret. 2021. Extreme drought reduces climatic disequilibrium in dryland plant communities. Oikos 130: 680–690. https://doi.org/10.1111/oik.07882
High rates of climate change are currently exceeding many plant species' capacity to keep up with climate, leading to mismatches between climatic conditions and climatic preferences of the species present in a community. This disequilibrium between climate and community composition could diminish, h…
Allstädt, F. J., A. Koutsodendris, E. Appel, W. Rösler, T. Reichgelt, S. Kaboth-Bahr, A. A. Prokopenko, and J. Pross. 2021. Late Pliocene to early Pleistocene climate dynamics in western North America based on a new pollen record from paleo-Lake Idaho. Palaeobiodiversity and Palaeoenvironments 101: 177–195. https://doi.org/10.1007/s12549-020-00460-1
Marked by the expansion of ice sheets in the high latitudes, the intensification of Northern Hemisphere glaciation across the Plio/Pleistocene transition at ~ 2.7 Ma represents a critical interval of late Neogene climate evolution. To date, the characteristics of climate change in North America duri…
Shaw, E. C., R. Fowler, S. Ohadi, M. J. Bayly, R. A. Barrett, J. Tibbits, A. Strand, et al. 2020. Explaining the worldwide distributions of two highly mobile species: Cakile edentula and Cakile maritima. Journal of Biogeography 48: 603–615. https://doi.org/10.1111/jbi.14024
Aim: If we are able to determine the geographic origin of an invasion, as well as its known area of introduction, we can better appreciate the innate environmental tolerance of a species and the strength of selection for adaptation that colonizing populations have undergone. It also enables us to ma…
Cours, J., L. Larrieu, C. Lopez-Vaamonde, J. Müller, G. Parmain, S. Thorn, and C. Bouget. 2021. Contrasting responses of habitat conditions and insect biodiversity to pest- or climate-induced dieback in coniferous mountain forests. Forest Ecology and Management 482: 118811. https://doi.org/10.1016/j.foreco.2020.118811
Natural disturbances are major drivers of forest dynamics. However, in the current context of anthropogenic global warming, shifts in disturbance regimes are expected. Natural disturbances usually leave biological or structural legacies which are important for early-successional species. Nevertheles…