Geosciences, Volume 13, Issue 2
February 2023 - 40 articles
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Cover Story: The Southern Ocean represents a key area to study extinction events and other short-term environmental crises affecting the biota, as it hosts a rich community thriving in environments dominated by glacial phenomena and strong currents. Among the environmental factors affecting the structure of benthic assemblages in Antarctica, volcanic eruptions may play a significant role. The impacts on ostracods and foraminifers caused by three ash falls recovered in a core sediment (Drygalski Basin, Ross Sea) were analysed for the first time. The deposition of tephra marked temporary changes in both taxa structures, pinpointed by well-defined ecological and evolutionary phases related to the before and after deposition events. The mechanisms inducing disappearance and/or mortality are still not clear. View this paper 
