Peter Kleppa
30 octobre 1903 – 06 décembre 1991
librarian
Norwegian librarian
http://www.wikidata.org/entity/Q11995447
Kleppa , Peter. 2024. Natural history specimens collected and/or identified and deposited. [Data set]. Zenodo. https://doi.org/10.5281/zenodo.8101007
Science Rendue Possible
Kovalchuk, I., M. Pellino, P. Rigault, R. van Velzen, J. Ebersbach, J. R. Ashnest, M. Mau, et al. 2020. The Genomics ofCannabisand Its Close Relatives. Annual Review of Plant Biology 71: 713–739. https://doi.org/10.1146/annurev-arplant-081519-040203
Cannabis sativa L. is an important yet controversial plant with a long history of recreational, medicinal, industrial, and agricultural use, and together with its sister genus Humulus, it represents a group of plants with a myriad of academic, agricultural, pharmaceutical, industrial, and social int…
Léveillé-Bourret, É., B.-H. Chen, M.-È. Garon-Labrecque, B. A. Ford, and J. R. Starr. 2020. RAD sequencing resolves the phylogeny, taxonomy and biogeography of Trichophoreae despite a recent rapid radiation (Cyperaceae). Molecular Phylogenetics and Evolution 145: 106727. https://doi.org/10.1016/j.ympev.2019.106727
Trichophoreae is a nearly cosmopolitan Cyperaceae tribe that contains ∼17 species displaying striking variation in size, inflorescence complexity, and perianth morphology. Although morphologically distinct, the status of its three genera (Cypringlea, Oreobolopsis and Trichophorum) are controversial …
Mienna, I. M., J. D. M. Speed, M. Bendiksby, A. H. Thornhill, B. D. Mishler, and M. D. Martin. 2019. Differential patterns of floristic phylogenetic diversity across a post‐glacial landscape. Journal of Biogeography 47: 915–926. https://doi.org/10.1111/jbi.13789
Aim: In this study, we explored spatial patterns of phylogenetic diversity (PD) and endemism in the flora of Norway and tested hypothesized post‐glacial environmental drivers of PD, including temperature, precipitation, edaphic factors and time since glacial retreat. Location: Norway. Taxon: Vascula…
Mezghani, N., C. K. Khoury, D. Carver, H. A. Achicanoy, P. Simon, F. M. Flores, and D. Spooner. 2019. Distributions and Conservation Status of Carrot Wild Relatives in Tunisia: A Case Study in the Western Mediterranean Basin. Crop Science 59: 2317–2328. https://doi.org/10.2135/cropsci2019.05.0333
Crop wild relatives, the wild progenitors and closely related cousins of cultivated plant species, are sources of valuable genetic resources for crop improvement. Persisting gaps in knowledge of taxonomy, distributions, and characterization for traits of interest constrain their expanded use in plan…
Marconi, L., and L. Armengot. 2020. Complex agroforestry systems against biotic homogenization: The case of plants in the herbaceous stratum of cocoa production systems. Agriculture, Ecosystems & Environment 287: 106664. https://doi.org/10.1016/j.agee.2019.106664
In addition to their potential against deforestation and climate change, agroforestry systems may have a relevant role in biodiversity conservation. In this sense, not only species richness per se, but also community composition, including the distribution range of the species, should be considered.…
Exposito-Alonso, M., H. A. Burbano, O. Bossdorf, R. Nielsen, and D. Weigel. 2019. Natural selection on the Arabidopsis thaliana genome in present and future climates. Nature 573: 126–129. https://doi.org/10.1038/s41586-019-1520-9
Through the lens of evolution, climate change is an agent of natural selection that forces populations to change and adapt, or face extinction. However, current assessments of the risk of biodiversity associated with climate change1 do not typically take into account how natural selection influences…
Folk, R. A., R. L. Stubbs, M. E. Mort, N. Cellinese, J. M. Allen, P. S. Soltis, D. E. Soltis, and R. P. Guralnick. 2019. Rates of niche and phenotype evolution lag behind diversification in a temperate radiation. Proceedings of the National Academy of Sciences 116: 10874–10882. https://doi.org/10.1073/pnas.1817999116
Environmental change can create opportunities for increased rates of lineage diversification, but continued species accumulation has been hypothesized to lead to slowdowns via competitive exclusion and niche partitioning. Such density-dependent models imply tight linkages between diversification and…
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…
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…