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Treub Maatschappij - Society for the Advancement of Research in the Tropics & the Institute for Biodiversity and Ecosystem Dynamics (IBED), University of Amsterdam, invites you to join this symposium.

Detail Summary
Date 18 October 2019
Time 14:00 - 17:00
Location Science Park G
Room G2.10.


1410-1430: Characterization of phytoliths in mid-elevation Andean forests Seringe Huisman (University of Amsterdam/Treub grant awardee)

1430 -1450: Extinction-driven changes in frugivore communities on tropical islands: worldwide and in Mauritius - Julia Heinen (University of Copenhagen, Denmark)

1450 - 1510: Are the current Amazonian fires unprecedented? - Crystal N.H. McMichael (University of Amsterdam)

1510 - 1530: On the relationship between tiger conservation and water management - Jasper Griffioen, Hanne Berghuis & Ewa van Kooten (Utrecht University)

1530-1600: TEA

1600 - 1645: Assembling the diverse rain forest flora of SE Asia by evaluating the fossil and molecular record in relation to plate tectonics - Robert J. Morley1,2 (1Palynova, 2Southeast Asia Research Group, Royal Holloway University of London, UK)

1700: DRINKS– Science Park 904, IBED Common Room, C4.222

To register, please send an email to

Science Park G

Room G2.10.

Science Park 508
1098 XH Amsterdam


Ms dr. M.C. (Carina) Hoorn

Faculty of Science

Institute for Biodiversity and Ecosystem Dynamics

Ms dr. C.N.H. (Crystal) McMichael

Faculty of Science

Institute for Biodiversity and Ecosystem Dynamics

Short biography of the speakers

Seringe Huisman (University of Amsterdam/Treub grant awardee). Seringe is currently finishing her Master’s in Biology at the University of Amsterdam. During her Bachelor’s program, she became interested in Tropical Ecology and did an internship with Dr. Crystal McMichael in Tropical Paleoecology. She analyzed fossil charcoal and phytoliths from Ecuadorian lake sediments, reconstructing Holocene vegetation history from the western Amazonian lowlands. She continued her research in Paleoecology during her Master’s project, this time in a mid-elevation Andean setting. Thanks to grants provided by the Treub Maatschappij and the Amsterdam University Fund, she got the chance to perform fieldwork on the eastern Andean flank in Ecuador. Her project led to the characterization of new mid-elevational palm phytoliths, which were previously unstudied and enable comprehensive local vegetation reconstruction.

Julia Heinen (University of Copenhagen, Denmark). Julia Heinen has completed her BSc and MSc at the University of Amsterdam. During this time she became interested in extinctions of fruit-eating animals on islands and published her first paper and large database on this topic. She is now halfway through her PhD in Island Macroecology at the University of Copenhagen at the Center for Macroecology, Evolution and Climate. For this, she is still working as an island macroecologist on the effects of extinction of fruit-eating animals on plants. Besides the global scale island comparisons, she is investigating the frugivore community at local scale in Mauritius and the Krakatau Islands. Julia is also Student-at-Large at the International Biogeography Society, representing young biogeographers. She enjoys explaining her research with videos (

Crystal N.H. McMichael (University of Amsterdam). Crystal McMichael is Assistant Professor at the Department of Ecosystem and Landscape Dynamics (University of Amsterdam). She is a paleoecologist, tropical ecologist, and biogeographer. Her research focuses on past fire and vegetation change across tropical ecosystems, and the role of humans and climate change in structuring those dynamics. She is also the Vice President of Conferences for the International Biogeography Society

Jasper Griffioen (Utrecht University). Jasper Griffioen is professor of Water Quality Management at Utrecht University (2011 to date) and expert researcher at TNO Geological Survey of the Netherlands (1991 to date). He is specialised in environmental hydrology and geochemistry within the framework of sustainable management of soil and water resources. He performed studies for a wide variety of geographical settings and a broad range of environmental management issues, ranging from an acid crater lake in Indonesia to disposal of radioactive waste in the deep subsurface of the Netherlands. Many of his projects refer to the risks and impact of anthropogenic measures on groundwater and subsequent effects on drinking water and groundwater-dependent ecosystems. At TNO Geological Survey, he pays attention to the geochemical and hydrological characterization of the subsurface, which has given him extensive insights in geo-scientific surveying of our environment as well as its importance. Preferably, he combines field campaigns with modelling studies. As member of the former ministerial Dutch Technical Committee on Soil, he was involved in c. 100 ministerial advices during October 2007 - March 2016. He has been an expert in several cases for Dutch Courts of Justice as well as for the Netherlands Commission of Environmental Assessment. His research frequently reaches Dutch national newspapers and other media.

Robert J. Morley: Robert (Bob) Morley was introduced to palynology by the late John Flenley, and was John’s first research student, and was further inspired by Jan Muller from the Rijksherbarium in Leiden. After completing a PhD thesis on the Late Quaternary palynology of Sumatra and Malaysia he joined Robertson Research International, a geological consultancy company as ‘Tertiary palynologist’ mainly working in SE Asia and West Africa. In 1986 he was acting manager for a short while at the Robertson Bogota office, where he met Henry Hooghiemstra and Carina Hoorn for the first time in a remote field on the Sabana de Bogota!

In the early 1990’s he joined the British Geological Survey overseas division, and set up a palynology lab for the Indonesian Government in Jakarta, after which time he established the consultancy company Palynova, together with his wife Santi, which provides expertise in biostratigraphy to petroleum exploration companies and government research laboratories. His major research interests are: evolution of tropical rain forests, resolving stratigraphic problems using biostratigraphy, and especially using the methods of ‘sequence biostratigraphy’ to develop a better understanding of sequence stratigraphy. A further primary aim is to ensure that unpublished petroleum industry archives of biogeographic interest are brought into the public domain. He authored a book ‘Origin and Evolution of Tropical Rain Forests’ published by Wiley, and has published over 120 papers on biostratigraphy and SE Asian geology.’