The Geoscience Seminar TODAY is given by Leena Sukselainen. Leena works as a PhD student in our department and she is going to present us part of her thesis work.
Location: D114 Physicum, Kumpula Campus
Title: CO-OCCURRENCE OF PLIOPITHECOID AND HOMINOID PRIMATES IN FOSSIL RECORD: AN ECOMETRIC ANALYSIS (abstract below)
All are welcome!
Both pliopithecoid and hominoid primates were widely distributed throughout Eurasia during the Miocene, but are known to have coexisted only at a few localities. It has been speculated that their different habitat preferences permitted only minimal overlap under special environmental conditions. Here, we study the context for pliopithecoid and hominoid co-occurrence by assessing taxonomically-based palaeoecological diversity of associated fossil mammals, as well as through direct ecometric analysis based on hypsodonty of mammalian herbivores. Our results show that pliopithecoids persistently inhabited more humid environments compared to other primate groups studied, suggesting an inability to adapt to changing environmental conditions. The opportunity for hominoids and pliopithecoids to co-occur appears to have been restricted by the niche conservatism in the latter group. Our study also indicates that direct ecometric analysis gives a better separation of the ecological preferences of these primate clades than do analyses of taxonomically-based community structure.