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By schmeg
Posts:  216
Joined:  Tue Jun 05, 2018 8:07 pm
The Green Empire Strikes Back: the Ecology and Evolution of Carnivorous Plants

a free public lecture by UW–Madison botany professor Tom Givnish

September 12 @ 7:00 pm to 8:15 pm (central)
University of Wisconsin–Madison campus
425 Henry Mall
all info here: ... us-plants/

watch live from this webcam link:

Most plants are consumed, in whole or part, by animals. In 1875, Charles Darwin amazed scientists and the general public by demonstrating that several plants—including sundews, butterworts, and the Venus flytrap—have turned these tables and capture and eat animals, and evolved remarkable adaptations to ensnare and digest their prey. Since Darwin, we’ve come to know a great deal more about carnivorous plants, from their genes and genomes to their physiology, behavior, ecology, and evolution. This week, Thomas Givnish shares what we have learned in recent years about the origins and functional diversity of green meat-eaters, and the advantages they obtain and the costs they incur from consuming prey. He will discuss some extraordinary recent discoveries about how some plants attract, capture, and digest animals, why certain kinds of habitats and ecological conditions favor carnivores over non-carnivorous competitors, or how some carnivorous plants have evolved further to capture nutrients by acting as latrines or bivouacs for non-prey animals, or recruiting animals to guard their food, assist as external digestive glands, or act as butlers. Some carnivorous plants even appear to have evolved to have mutually beneficial interactions with their prey … and to avoid eating their own pollinators!

About the Speaker: Thomas Givnish is the Henry Allan Gleason Professor of Botany at the University of Wisconsin-Madison. He received his PhD from Princeton, and served on the faculty at Harvard before moving to Madison in 1985. In his research, Givnish integrates several aspects of ecology, adaptation, speciation, molecular systematics, and historical biogeography to understand the origin, distribution, diversity, physiology, and morphology of plants around the world, including several groups from tropical mountains and oceanic islands, especially monocots such as bromeliads, orchids, and lilies and their relatives. Givnish and his colleagues are currently studying the photosynthetic, hydraulic, and allocational traits that allow different species of Eucalyptus to dominate different climatic belts in Australia, and how plant traits, genetics, and phylogeny help determine which plants species have undergone local extinctions or explosions in Wisconsin over the past 50 years. He leads a number of field courses at UW-Madison, including research at many sites in Wisconsin, the southern Appalachians, the deserts of southern California, and (most recently) the rain forests, woodlands, and mallee of southeastern Australia. Givnish discovered a new group of carnivorous plants on the ancient tepuis of Venezuela many years ago, and his cost/benefit model for the evolution of carnivorous plants has provided a central framework for studies on the ecophysiology and evolution of carnivorous plants and explained several patterns whose explanation had eluded Darwin.
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