"David's research looks at the record of environmental change during Earth's greatest mass extinctions. His current NERC-funded research investigates three crises that occurred between the Middle Permian and end Triassic - an interval of extremes of climate, extinction and evolution - in the """"Boreal Realm"""" of northern high latitudes.
His focus is the role of major (large igneous province) volcanism in extinction scenarios, and the effects of warming, oceanic oxygen depletion and acidification on marine ecosystems. David is a field geologist who has worked in 30 countries and has published on extinctions from 445 million years ago to the present.
Recent sessions convened at international conferences.
- European Union of Geosciences Annual Meeting 2017, Vienna, session SSP2.4, 'Mass Extinctions, Volcanism, Impacts, and Catastrophic Environmental Changes: Observations and Processes'.
- Geological Society of America Annual Meeting 2016, Denver, session T145, 'Volcanism, Mass Extinctions, and Environmental Change'.
- Geological Society of America Annual Meeting 2015, Baltimore,session T153, 'Mass Extinction Causality: Records of Anoxia, Acidification and Global Warming during Earth's Greatest Crises I & II'.
- Geological Society of America Annual Meeting 2014, Vancouver, session P2 (Pardee Keynote Symposium), 'Mass Extinctions: Volcanism, Impacts, and Catastrophic Environmental Changes'.
- Geological Society of America Annual Meeting 2014, Vancouver, session T206, 'Mass Extinctions: Volcanism, Impacts, and Catastrophic Environmental Change 1/2'.
- The Permian Strata of Svalbard, Tromsø, Norway, 10-12 April 2013, international conference funded by Svalbard Science Forum (Â£20k).