Dr. Simon Poppinga, Plant Biomechanics Group & Botanic Garden Freiburg, University of Freiburg
These plants suck -Biomechanics, functional morphology and diversity of bladderwort (Utricularia spp.) traps
Bladderworts (Utricularia spp., Lamiales) possess the fastest traps among carnivorous plants. Within about half a millisecond prey is sucked into the "bladder", a process which is much too fast to be processed by the human eye. I will show how these ultrafast suction devices function mechanically and how they are designed to overcome their prey. My talk will be accompanied by high-speed videos showing prey capture and trap movement in high temporal resolution. Moreover, I will show that there exists a great diversity of trap types in this genus. In conclusion, the Utricularia trap generally is a mechanically highly complex and functionally very robust device which leaves its prey virtually no chance to escape.
Laurent Taerwe, Belgium
Conservation of Nepenthes in situ
Poaching from wild populations is a growing threat to many Nepenthes species, not only in lowland areas but also on some of the most remote mountains of Southeast Asia. There is an increasing demand for Nepenthes and other plants on local and foreign markets. Habitat loss and land-use change often results in the growing exploitation of the resources of the vulnerable habitats where Nepenthes grow. Climate change is playing an increasing factor which can be seen already in certain populations. What is the importance of cultivation and horticulture for the conservation of Nepenthes? What can we do as a hobbyists? Which role does CITES and IUCN play in this conservation story?