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Abstract Detail


Supporting Effective Teaching and Learning

Thorhaug, Anitra [1].

Measuring Eco-physiology of Plants from Cells to Ecosystems with Nondestructive Techniques.

Sponsored by the Physiological and the Ecological Sections of the American Botanical Society, There has been a rapid development of in vivo imaging approaches to physiological and ecological processes , especially responses to stress. These techniques range from sub-cellular level to the whole ecosystem and landscape level. The techniques span a range from microscopy and NMR imaging to hand held instruments (absorbance, fluorescence, reflectance sensors) to airborne and satellite remote sensing. What are new laboratory and portable field techniques to nondestructively measure plants? How do they operate? What are their limits of measurement? What types of results occur from each? What can they do for my research or teaching? A hands-on workshop with experts and their instruments for demonstration of a series of nondestructive, non-intrusive instruments and the types of results obtained from them will allow the participants to learn how these instruments operate and what results could be obtained from each instrument. The range will be from the molecular level to the landscape level including cells, leafs, whole plants, ecosystems, and large scale landscape level seen from remote sensing. The theme is that non-destructive instruments gives the ability to measure intact living plants either in field or laboratory. This allows investigators great advantage over classical methods of grinding or slicing specimens to ascertain chemical and physical properties and responses. The living systems responses may indeed be greater than the sum of its parts and certainly respond to stress and other changes more than the inert methods. The replication of various levels of the changes being tested with the same specimens allows better statistics. The multiple trials of various substances to the same specimens also is of statistical advantage. Instrumentation and its adaptation to eco-physiology is rapidly changing. Field and laboratory instruments will be demonstrated by experts, who will talk to small groups of participants on a continual basis during a half day session. The experts will lead the participants through the procedures and results of their instruments.The range from photosynthesis and stress measurements to remote sensing of ecosystems will be conveyed. This is a learning experience for investigators and students of eco-physiologists, physiologists, ecologists and those who teach field and laboratory plant science on a whole organism to landscape level. I.Organ, Cellular,and subcellular level responses of Photosynthesis . "Photosynthesis and light responses." "Where are the responses occurring in the cell" "In Vivo Stains in organelles, organs and whole plants" II.Whole Plant to canopy scale Stress Measurements. "Spectral Reflectance for Forest leaves". "Spectral reflectance signature of dominant habitat organisms for remote sensing With major natural variables." "Portable field absorbance measurements" "Fluorescence measurements: cells and leaves." III. Satellite and aerial Mapping of ecosystems and plant health "Remote Sensing " " Mid Altitude Color Photography mapping."


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1 - Yale University School of Forestry & Environmental Studies, 1359 SW 22 TER, Miami, Florida, 33145, USA

Keywords:
none specified

Presentation Type: Workshop
Session: W06
Location: Lake Michigan/Hilton
Date: Sunday, July 8th, 2007
Time: 8:30 AM
Number: W06001
Abstract ID:2512


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