Ciência habilitada por dados de espécimes

Ribeiro, T. M. A., Martins, A. C., Silva, D. P., & Aguiar, A. J. C. (2021). Systematics of the oil bee genus Lanthanomelissa (Apidae: Tapinotaspidini) and its implications for the biogeography of South American grasslands. Journal of Zoological Systematics and Evolutionary Research. doi:10.1111/jzs.12472 https://doi.org/10.1111/jzs.12472

Lanthanomelissa has an uncertain taxonomic history, and was formerly treated either as an independent genus or as a subgenus of Chalepogenus. It is endemic to southern South American grasslands, an endangered and poorly known environment. We aimed to understand the origin of these bees in time and s…

Bossert, S., Copeland, R. S., Sless, T. J. L., Branstetter, M. G., Gillung, J. P., Brady, S. G., … Straka, J. (2020). Phylogenomic and Morphological Reevaluation of the Bee Tribes Biastini, Neolarrini, and Townsendiellini (Hymenoptera: Apidae) With Description of Three New Species of Schwarzia. Insect Systematics and Diversity, 4(6). doi:10.1093/isd/ixaa013 https://doi.org/10.1093/isd/ixaa013

Abstract Bees of the tribes Biastini, Neolarrini, and Townsendiellini are cleptoparasites in the subfamily Nomadinae (Hymenoptera, Apidae) and parasitize solitary bees. Understanding their phylogenetic relationships has proven difficult for many decades. Previous research yielded ambiguous results b…

Ellestad, P., Forest, F., Serpe, M., Novak, S. J., & Buerki, S. (2021). Harnessing large-scale biodiversity data to infer the current distribution of Vanilla planifolia (Orchidaceae). Botanical Journal of the Linnean Society. doi:10.1093/botlinnean/boab005 https://doi.org/10.1093/botlinnean/boab005

Although vanilla is one of the most popular flavours in the world, there is still uncertainty concerning the native distribution of the species that produces it, Vanilla planifolia. To circumscribe the native geographical extent of this economically important species more precisely, we propose a new…

Lima, V. P., & Marchioro, C. A. (2021). Brazilian stingless bees are threatened by habitat conversion and climate change. Regional Environmental Change, 21(1). doi:10.1007/s10113-021-01751-9 https://doi.org/10.1007/s10113-021-01751-9

The stingless bees of the genus Melipona play an important role as pollinators of wild and cultivated plants in the Neotropics, contributing to forest maintenance and food production. Similar to other bees, meliponids are threatened by anthropogenic impacts on the environment, such as habitat conver…

Ji, Y. (2021). The geographical origin, refugia, and diversification of honey bees (Apis spp.) based on biogeography and niche modeling. Apidologie. doi:10.1007/s13592-020-00826-6 https://doi.org/10.1007/s13592-020-00826-6

An understanding of the origin and formation of biodiversity and distribution patterns can provide a theoretical foundation for biodiversity conservation. In this study, phylogeny and biogeography analyses based on mitochondrial genomes and niche modeling based on occurrence records were performed t…

Ji, Y., Li, X., Ji, T., Tang, J., Qiu, L., Hu, J., … Zhou, X. (2020). Gene reuse facilitates rapid radiation and independent adaptation to diverse habitats in the Asian honeybee. Science Advances, 6(51), eabd3590. doi:10.1126/sciadv.abd3590 https://doi.org/10.1126/sciadv.abd3590

Animals with recent shared ancestry frequently adapt in parallel to new but similar habitats, a process often underlined by repeated selection of the same genes. Yet, in contrast, few examples have demonstrated the significance of gene reuse in colonization of multiple disparate habitats. By analyzi…

Brendel, M. R., Schurr, F. M., & Sheppard, C. S. (2020). Inter‐ and intraspecific selection in alien plants: How population growth, functional traits and climate responses change with residence time. Global Ecology and Biogeography. doi:10.1111/geb.13228 https://doi.org/10.1111/geb.13228

Aim: When alien species are introduced to new ranges, climate or trait mismatches may initially constrain their population growth. However, inter‐ and intraspecific selection in the new environment should cause population growth rates to increase with residence time. Using a species‐for‐time approac…

Orr, M. C., Hughes, A. C., Chesters, D., Pickering, J., Zhu, C.-D., & Ascher, J. S. (2020). Global Patterns and Drivers of Bee Distribution. Current Biology. doi:10.1016/j.cub.2020.10.053 https://doi.org/10.1016/j.cub.2020.10.053

Insects are the focus of many recent studies suggesting population declines, but even invaluable pollination service providers such as bees lack a modern distributional synthesis. Here, we combine a uniquely comprehensive checklist of bee species distributions and >5,800,000 public bee occurrence re…

Dorey, J. B., Fagan-Jeffries, E. P., Stevens, M. I., & Schwarz, M. P. (2020). Morphometric comparisons and novel observations of diurnal and low-light-foraging bees. Journal of Hymenoptera Research, 79, 117–144. doi:10.3897/jhr.79.57308 https://doi.org/10.3897/jhr.79.57308

Low-light adapted bees are substantially understudied components of the bee fauna, particularly in Australia. Whilst several species in Australia are thought to be adapted to low-light conditions, explicit records of these taxa actually foraging at twilight or night are absent from the scientific li…

随机森林(Random forest)模型在2001年发表后得到广泛的关注。由于随机森林可以进行回归和判别等多种统计分析,而且不受正态性、方差齐性和自变量独立性等参数检验的前提条件的制约,其应用日益普遍,有被看作万能模型的趋势。实际上,随机森林是一种特点鲜明的模型,应用局部优化拟合观察值,在分析有偏效应关系的数据时,其结果往往不准确。本文以蝉科(Cicadidea)物种的分布数据为例,比较了随机森林在回归分析时与多元线性回归、广义可加模型和人工神经网络模型的差别,在判别分析时与线性判别分析的差别,强调了随机森林预测时的碎片化特点。结果显示随机森林在处理有多元共线性和交互作用的数据时,以及在判别…