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It is not known whether the fossil content of amber accurately represents the arthropod biodiversity of past forests, and if and how those fossils can be compared with recent fauna for studies and predictions of biodiversity change through time. Our study of arthropods (mainly insects and spiders) living around the resinous angiosperm tree Hymenaea verrucosa Gaertner, 1791 in the lowland coastal forest of Madagascar, and arthropods trapped by the resin produced by this tree species, demonstrates that amber does not record the true past biodiversity of the entire forest. However, our results reveal how taphonomic processes, arthropod behaviors, and ecological relationships can influence arthropod death assemblages in resins and play a crucial role in controlling their taxonomic compositions.
| Authors: | Mónica M. Solórzano Kraemer; Xavier Delclòs; Matthew E. Clapham; Antonio Arillo; David Peris; Peter Jäger; Frauke Stebner; Enrique Peñalver | |
| Journal: | Proceedings of the National Academy of Sciences current issue | |
| Volume: | 115 | |
| edition: | 26 | |
| Year: | 2018 | |
| Pages: | 6739 | |
| DOI: | 10.1073/pnas.1802138115 | |
| Publication date: | 26-Jun-2018 |
Science and Culture: Math tools send legislators back to the drawing board [Political Sciences]
*UPDATE: On June 18, 2018, after this article went to press, the Supreme Court of the United States ruled on two high-profile cases related to partisan gerrymandering. In effect, the rulings sidestepped the issue of when partisan gerrymandering is unconstitutional. Both cases—one concerning ... more
Primary productivity below the seafloor at deep-sea hot springs [Environmental Sciences]
The existence of a chemosynthetic subseafloor biosphere was immediately recognized when deep-sea hot springs were discovered in 1977. However, quantifying how much new carbon is fixed in this environment has remained elusive. In this study, we incubated natural subseafloor communities under ... more
Trypanosoma brucei is a highly invasive pathogen capable of penetrating deeply into host tissues. To understand how flagellar motility facilitates cell penetration, we used cryo-electron tomography (cryo-ET) to visualize two genetically anucleate mutants with different flagellar motility be ... more
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