Johann Franz Drège
Drège; Johann Franz Drege; Drege; J.F. Drège; Jean François Drège; J.F. Drege
* 25 Março, 1794 – 03 Fevereiro, 1881 †
explorer, botanist, botanical collector
German botanist (1794-1881)
Ciência habilitada por dados de espécimes
Marciniuk, P., J. Marciniuk, A. Łysko, Ł. Krajewski, J. Chudecka, J. Skrzyczyńska, and A. A. Popiela. 2020. Rediscovery of Cyperus flavescens (Cyperaceae) on the northeast periphery of its range in Europe. PeerJ 8: e9837. https://doi.org/10.7717/peerj.9837
In recent years, three large populations of Cyperus flavescens were found in Poland, the richest occurrence of this species in over 30 years. The goal of this research is to determine the habitat factors lead to the mass occurrence of C. flavescens and the present situation of that species and its h…
Cross, A. T., T. A. Krueger, P. M. Gonella, A. S. Robinson, and A. S. Fleischmann. 2020. Conservation of carnivorous plants in the age of extinction. Global Ecology and Conservation 24: e01272. https://doi.org/10.1016/j.gecco.2020.e01272
Carnivorous plants (CPs)—those possessing specific strategies to attract, capture and kill animal prey and obtain nutrition through the absorption of their biomass—are harbingers of anthropogenic degradation and destruction of ecosystems. CPs exhibit highly specialised and often very sensitive ecolo…
Brightly, W. H., S. E. Hartley, C. P. Osborne, K. J. Simpson, and C. A. E. Strömberg. 2020. High silicon concentrations in grasses are linked to environmental conditions and not associated with C 4 photosynthesis. Global Change Biology 26: 7128–7143. https://doi.org/10.1111/gcb.15343
The uptake and deposition of silicon (Si) as silica phytoliths is common among land plants and is associated with a variety of functions. Among these, herbivore defense has received significant attention, particularly with regards to grasses and grasslands. Grasses are well known for their high sili…
Chevalier, M., B. M. Chase, L. J. Quick, L. M. Dupont, and T. C. Johnson. 2020. Temperature change in subtropical southeastern Africa during the past 790,000 yr. Geology 49: 71–75. https://doi.org/10.1130/G47841.1
Across the glacial-interglacial cycles of the late Pleistocene (~700 k.y.), temperature variability at low latitudes is often considered to have been negligible compared to changes in precipitation. However, a paucity of quantified temperature records makes this difficult to reliably assess. In this…
Zhernova, D. A., M. V. Nilova, and A. A. Oskolski. 2020. Comparative wood anatomy of Astropanax and Neocussonia, an Afro-Malagasy lineage of Araliaceae. Botanical Journal of the Linnean Society 195: 327–347. https://doi.org/10.1093/botlinnean/boaa067
Astropanax and Neocussonia are two recently resurrected genera of Araliaceae that had long been considered as an Afro-Malagasy lineage of Schefflera. The wood structure of 11 Neocussonia spp. and eight Astropanax spp. has been studied. Neocussonia shows a higher average length of vessel elements (13…
de Jesús Hernández-Hernández, M., J. A. Cruz, and C. Castañeda-Posadas. 2020. Paleoclimatic and vegetation reconstruction of the miocene southern Mexico using fossil flowers. Journal of South American Earth Sciences 104: 102827. https://doi.org/10.1016/j.jsames.2020.102827
Concern about the course of the current environmental problems has raised interest in investigating the different scenarios that have taken place in our planet throughout time. To that end, different methodologies have been employed in order to determine the different variables that compose the envi…
Clark, M. D., C. L. Wonkka, U. P. Kreuter, and W. E. Rogers. 2020. Interactive effects of prescribed fire and livestock grazing on Seriphium plumosum in South African sour bushveld. African Journal of Range & Forage Science 37: 278–285. https://doi.org/10.2989/10220119.2020.1751287
Documented increases in woody plant abundance worldwide can reduce land value and grazing capacity. Throughout many grasslands and savannas in South Africa, Seriphium plumosum, an encroaching woody plant, has been rapidly displacing desirable native species. Cost-effective management techniques are …
Frankiewicz, K. E., J. H. Chau, and A. A. Oskolski. 2020. Wood and bark of Buddleja: uniseriate phellem, and systematic and ecological patterns. IAWA Journal 42: 3–30. https://doi.org/10.1163/22941932-bja10020
Wood anatomy of Buddleja is well-explored but not in many southern African members, which form a grade of species and small clades that form successive sister groups to the rest of the genus, and its bark structure has not been studied at all. We provide new descriptions of wood anatomy for twelve s…
Davies, T. J., B. H. Daru, B. S. Bezeng, T. Charles-Dominique, G. P. Hempson, R. M. Kabongo, O. Maurin, et al. 2020. Savanna tree evolutionary ages inform the reconstruction of the paleoenvironment of our hominin ancestors. Scientific Reports 10. https://doi.org/10.1038/s41598-020-69378-0
Ideas on hominin evolution have long invoked the emergence from forests into open habitats as generating selection for traits such as bipedalism and dietary shifts. Though controversial, the savanna hypothesis continues to motivate research into the palaeo-environments of Africa. Reconstruction of t…
Li, K., J. Wang, L. Qiao, R. Zheng, Y. Ma, Y. Chen, X. Hou, et al. 2020. Diversity of Reproductive Phenology Among Subtropical Grasses Is Constrained by Evolution and Climatic Niche. Frontiers in Ecology and Evolution 8. https://doi.org/10.3389/fevo.2020.00181
Reproductive phenology is sensitive to climatic changes and is associated with species functional types, distribution ranges, and their corresponding climatic niches. Phylogenetic niche conservatism in reproductive phenology also constrains its diversity and the distribution of species. Therefore, w…