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Abstract booklet - gtö – Society for Tropical Ecology

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132 PARALLEL SESSION HALL H IV | FREE CONTRIBUTIONSPARALLEL SESSION HALL H III | TROPICAL ECOLOGISTS AT WORK133Thursday, 24 February, 10:45, Hall H IVBIOGEOGRAPHY AND CENOZOIC CLIMATE CHANGE: ON THEOCCURRENCE OF TROPICAL FORMS IN GRUBE MESSEL AND OTHERMID-LATITUDE FOSSIL SITESKrister T. Smith 11 Dept. of Palaeoanthropology and Messel ResearchForschungsinstitut und Naturmuseum SenckenbergFrankfurt, GermanyTHURSDAY 10:45 Hall H IVGrube Messel, near Frankfurt, Germany, is renowned <strong>for</strong> the extraordinarypreservation of its fossils. One of the most remarkable aspects of the speciescomposition at Messel is the prevalence of poikilothermic <strong>for</strong>ms that todayare predominantly found at low elevation in tropical to subtropical latitudes.These occurrences are wholly consistent with the warm and equabletemperatures and high precipitation rates suggested by independent datasources <strong>for</strong> the early Paleogene, particularly the Eocene. Yet these occurrencedata can be explained by different biogeographic models, and understandingtheir significance <strong>for</strong> modern patterns of biodiversity requires a diachronicperspective. I review studies of squamate (lizard and snake) occurrences at midlatitudesthroughout the Eocene. Predominantly tropical <strong>for</strong>ms – especiallyvarious members of Anguidae and Iguanidae – first appear at middle latitudesnear the base of the Eocene and disappear from those latitudes near the closeof the epoch. This pattern of appearance and disappearance coincident withepisodes of significant climatic change suggest that climate is responsible<strong>for</strong> major biogeographic shifts which may have contributed to the observedlatitudinal diversity gradient. Yet a Paleogene perspective from the tropicallatitudes, necessary <strong>for</strong> more closely testing these results, remains elusive.Parallel session: Thursday, 24 February, 11:30, Hall H IIITROPICAL ECOLOGISTS AT WORK:WHERE AND HOW TO FIND A JOBChair: Manfred NiekischContact: Manfred.Niekisch@stadt-frankfurt.deA number of organisations, ranging from non governmental organisationsand private consultancy companies to government institutions presentthemselves and describe the role of and working opportunities <strong>for</strong> tropicalecologists (and scientists in related fields) within their structures and areas ofactivity. The session aims at assisting students and young academics to get anoverview and orientation over different occupational images, job descriptionsand potential careers and employees.THURSDAY 11:30 Hall H IIIgtö<strong>Society</strong> <strong>for</strong> <strong>Tropical</strong> <strong>Ecology</strong> | Gesellschaft für Tropenökologie e.V. Status and future of tropical biodiversity | Frankfurt, 21 - 24 February 2011gtö

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