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| Evaluation of tropical–temperate transitions: An example of climatic characterization in the Asian Palmate group of Araliaceae Coca-de-la-Iglesia, M.; Medina, N.G.; Wen, J.; Valcárcel, V. (2022). Evaluation of tropical–temperate transitions: An example of climatic characterization in the Asian Palmate group of Araliaceae. Am. J. Bot. 109(9): 1488-1507. https://dx.doi.org/10.1002/ajb2.16059
In: American Journal of Botany. Botanical Society of America: Lancaster, Pa.. ISSN 0002-9122; e-ISSN 1537-2197
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Köppen–Geiger classification, latitudinal zonation, online biodiversity databases, world climatic regionalization |
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| Abstract |
PremiseThere has been a great increase in using climatic data in phylogenetic studies over the past decades. However, compiling the high-quality spatial data needed to perform accurate climatic reconstructions is time-consuming and can result in poor geographical coverage. Therefore, researchers often resort to qualitative approximations. Our aim was to evaluate the climatic characterization of the genera of the Asian Palmate Group (AsPG) of Araliaceae as an exemplar lineage of plants showing tropical–temperate transitions.MethodsWe compiled a curated worldwide spatial database of the AsPG genera and created five raster layers representing bioclimatic regionalizations of the world. Then, we crossed the database with the layers to climatically characterize the AsPG genera.ResultsWe found large disagreement in the climatic characterization of genera among regionalizations and little support for the climatic nature of the tropical–temperate distribution of the AsPG. Both results are attributed to the complexity of delimiting tropical, subtropical, and temperate climates in the world and to the distribution of the study group in regions with transitional climatic conditions.ConclusionsThe complexity in the climatic classification of this example of the tropical–temperate transitions calls for a general climatic revision of other tropical–temperate lineages. In fact, we argue that, to properly evaluate tropical–temperate transitions across the tree of life, we cannot ignore the complexity of distribution ranges. |
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