BEGIN:VCALENDAR VERSION:2.0 PRODID:-//18.83.4.138//NONSGML kigkonsult.se iCalcreator 2.20// CALSCALE:GREGORIAN METHOD:PUBLISH X-WR-CALNAME:Oceans at MIT X-WR-CALDESC:Striving to understand\, harness and sustain Earth'\;s def ining frontier. X-FROM-URL:http://oceans.mit.edu X-WR-TIMEZONE:America/New_York BEGIN:VTIMEZONE TZID:America/New_York X-LIC-LOCATION:America/New_York BEGIN:STANDARD DTSTART:20171105T020000 TZOFFSETFROM:-0400 TZOFFSETTO:-0500 RDATE:20181104T020000 TZNAME:EST END:STANDARD BEGIN:DAYLIGHT DTSTART:20180311T020000 TZOFFSETFROM:-0500 TZOFFSETTO:-0400 TZNAME:EDT END:DAYLIGHT END:VTIMEZONE BEGIN:VEVENT UID:dbga52fq7oqfq72ad5kj04g7b8@google.com DTSTAMP:20180503T093521Z CATEGORIES: CONTACT: DESCRIPTION:Title: A metabolic constraint on the biogeography of marine spe cies\n\nAbstract: Oxygen played a key role in the evolution of marine ecos ystems. However\, oxygen has not generally been considered a major constr aint on the contemporary biogeography of species outside regions of except ionally low O2. I will present a combination of physiological\, climate\, and species distribution data\, to argue that the limits of several diver se species ranges are governed by the ratio of oxygen supply and demand\, even in the well-oxygenated Atlantic Ocean. These limits correspond to an energetic requirement for organismal activity of about 2-5 times that at rest\, a ratio that is shared by most terrestrial species. This metaboli c constraint is rapidly tightened in the presence of climate warming due t o the combination of warmer water and less O2. I will use Earth System Mo dels to investigate and compare the loss of aerobically viable habitat in two periods of interest – the climate change projected for the 21st centur y and the end-Permian mass extinction. DTSTART;TZID=America/New_York:20161107T120000 DTEND;TZID=America/New_York:20161107T130000 LOCATION:Ida Green Lounge (9th Floor)\, Building 54\, Cambridge\, MA\, Unit ed States SEQUENCE:0 SUMMARY:PAOC Colloquium: Curtis Deutsch (UW) URL:http://oceans.mit.edu/event/paoc-colloquium-curtis-deutsch-uw X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n\\n\\nTitle: A metabol ic constraint on the biogeography of marine species\n\nAbstract: Oxygen pl ayed a key role in the evolution of marine ecosystems. However\, oxygen h as not generally been considered a major constraint on the contemporary bi ogeography of species outside regions of exceptionally low O2. I will pre sent a combination of physiological\, climate\, and species distribution d ata\, to argue that the limits of several diverse species ranges are gover ned by the ratio of oxygen supply and demand\, even in the well-oxygenated Atlantic Ocean. These limits correspond to an energetic requirement for organismal activity of about 2-5 times that at rest\, a ratio that is shar ed by most terrestrial species. This metabolic constraint is rapidly tig htened in the presence of climate warming due to the combination of warmer water and less O2. I will use Earth System Models to investigate and com pare the loss of aerobically viable habitat in two periods of interest – t he climate change projected for the 21st century and the end-Permian mass extinction. END:VEVENT END:VCALENDAR