Since they began clearing valleys and slopes for agriculture more than 9,000 years ago, and continuing with the construction of roads, buildings and cities, people have been altering landscapes. UVM geologists explore the link between human actions and landscape--and reach some important conclusions--in the cover article of the March issue of GSA Today. Produced by the Geological Society of America, the prestigious monthly journal goes to more than 20,000 geologists and libraries worldwide.
Paul Bierman, professor of geology, and colleagues--including three undergraduates--authored the paper, titled "Old Landscape Images Record Landscape Change Through Time." The paper is the result of research collected via UVMs Landscape Change Program, a searchable, web-based community archive of more than 10,000 images of Vermont landscapes from before 1810 to the present. The archive, which is particularly rich in rare images of rural areas, can be accessed online at http://uvm.edu/perkins/landscape.
Historical photographs are a powerful tool for examining and understanding the distribution of physical and biological surficial processes over the course of decades and centuries. Such imagery is particularly valuable for understanding human-landscape interaction. The GSA article presents several examples of quantitative, image-based, landscape-scale analyses made using hundreds of different images, each taken at a different place.
Lynda Majarian | EurekAlert!
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Proteins must be folded correctly to fulfill their molecular functions in cells. Molecular assistants called chaperones help proteins exploit their inbuilt folding potential and reach the correct three-dimensional structure. Researchers at the Max Planck Institute of Biochemistry (MPIB) have demonstrated that actin, the most abundant protein in higher developed cells, does not have the inbuilt potential to fold and instead requires special assistance to fold into its active state. The chaperone TRiC uses a previously undescribed mechanism to perform actin folding. The study was recently published in the journal Cell.
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