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 Charles J. Krebs [ 2010-03-12 ] |
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The boreal forest is one of the great ecosystems of the earth, and the ten-year snowshoe hare population cycle is one of the most striking features of this ecosystem. After 70 years of questionnaire research, time series analysis, and field experiments we now have a good understanding of the dynamics behind the hare cycle and the importance of predation and food supplies in regulating the cycle. I will briefly review the experiments we have carried out in the Yukon during the last 35 years, and explore their implications.
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| Ward Wheeler [ 2010-04-28 ] |
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Ward Wheeler's research focuses on the systematic relationships among and within insects, crustaceans, and chelicerates. His laboratory at the AMNH sequences DNA and reconstructs evolutionary trees to determine how these taxa and their anatomy and DNA have evolved over the past 500 million years. Dr. Wheeler has built a series of high performance cluster computers to analyze these data, some of the fastest used in phylogenetic research in the world. He has developed theory and algorithms to interpret evolutionary patterns of DNA and anatomy. This technology is put to use in the American Mus...
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| Ilya Bezprozvanny [ 2010-05-10 ] |
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Calcium ion (Ca2+) is a highly versatile intracellular signal that operates over a wide temporal range to regulate many different cellular processes, including fertilization, brain function, memory formation, gene transcription, cell proliferation, and cell death. As an ion messenger, cytosolic Ca2+ increases must be accurately controlled to achieve the signal fidelity upon stimulation. Failure of this calcium signaling system relates to many human diseases, such as hypertension, heart disease, diabetes, etc. Recently we have uncovered links between dysregulation of Ca2+ signaling and neuro...
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| Janet Rossant [ 2010-05-14 ] |
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Dr. Janet Rossant is a Senior Scientist in the Developmental & Stem Cell Biology Program and Chief of Research at The Hospital for Sick Children, Toronto. She is also a University Professor, University of Toronto, and Professor in the Departments of Molecular Genetics, Obstetrics/Gynaecology and Paediatrics, University of Toronto. Her research interests centre on understanding the genetic control of normal and abnormal development in the early mouse embryo using both cellular and genetic manipulation techniques. Her interests in the early embryo have led to the discovery of a novel placenta...
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