studied interval, which should not be younger than Barremian age, and to provide a regional continental perspective on a global event.

Pillot, G., Davidson, S., Auria, R., Combet-Blanc, Y., Godfroy, A., Liebgott, P.-P., 2020. Production of current by syntrophy between exoelectrogenic and fermentative hyperthermophilic microorganisms in heterotrophic biofilm from a deep-sea hydrothermal chimney. Microbial Ecology 79, 38-49.

https://doi.org/10.1007/s00248-019-01381-z To study the role of exoelectrogens within the trophic network of deep-sea hydrothermal vents, we performed successive subcultures of a hyperthermophilic community from a hydrothermal chimney sample on a mix of electron donors in a microbial fuel cell system. Electrode (the electron acceptor) was swapped every week to enable fresh development from spent media as inoculum. The MFC at 80 °C yielded maximum current - 2 production increasing from 159 to 247 mA m over the subcultures. The experiments demonstrated direct production of electric current from acetate, pyruvate, and H and indirect production from yeast extract and 2 peptone through the production of H and acetate from fermentation. The microorganisms found in on-electrode 2 Archaeoglobales Thermococcales communities were mainly affiliated to exoelectrogenic and species, whereas Bacillales Thermococcales in liquid media, the communities were mainly affiliated to fermentative and species. The work shows interactions between fermentative microorganisms degrading complex organic matter into fermentation products that are then used by exoelectrogenic microorganisms oxidizing these reduced compounds while respiring on a conductive support. The results confirmed that with carbon cycling, the syntrophic relations between fermentative microorganisms and exoelectrogens could enable some microbes to survive as biofilm in extremely unstable conditions.

Plecerová, A., Kaupová Drtikolová, S., Šmerda, J., Stloukal, M., Velemínský, P., 2020. Dietary reconstruction of the Moravian Lombard population (Kyjov, 5th - 6th centuries AD, Czech Republic) through stable isotope analysis 13 15 (δ C, δ N). Journal of Archaeological Science: Reports 29, 102062.

http://www.sciencedirect.com/science/article/pii/S2352409X19303025 The diet of the Lombard (Langobard) population of the Kyjov site (5th-6th centuries AD, Moravia, Czech 13 15 Republic) was reconstructed from carbon (δ C) and nitrogen (δ N) isotopic values in the bone collagen from 73 human and 19 faunal samples. Results indicate that the diet of the Lombard population sample was based on 13 C plants and animal proteins. The presence of three outliers with δ C values above -18‰, however, suggests 3 that millet was accessible and consumed by at least some members of the community in substantial quantities. Given the dating and exogenous character of the grave goods, these individuals are most probably members of the indigenous population of Moravia who grew millet before the arrival of the Lombards. The Lombard population shows a sex-based difference in the consumption of animal protein, with males on average showing 15 higher values of δ N than females. These findings match well with the (limited) prior isotopic research into the Central European phase of the Lombard migration. This study thus significantly enhances our knowledge about general trends in the dietary behaviour of Central European Lombards.

Pouteau, R., Trueba, S., Isnard, S., 2019. Retracing the contours of the early angiosperm environmental niche. Annals of Botany 125, 49-57.

https://doi.org/10.1093/aob/mcz131 Background and Aims: Our aim was to understand the environmental conditions of the emergence and radiation of early angiosperms. Such a question has long remained controversial because various approaches applied in the past have drawn conflicting images of early angiosperm ecology. Methods: We provided a new perspective on the question by using support vector machines to model the environmental niche of 51 species belonging to ten genera of extant lineages that diverged early during angiosperm evolution (basal angiosperms). Then, we analysed the resulting pattern of niche overlap and