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BOB OWEN/rowen@express-news.net
Richard Casteel, a graduate student from the University of Texas at Austin, searches for a nearly 6-century-old baldcypress tree along the Blanco River near Wimberley on Monday, Feb. 22, 2010.
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BOB OWEN/rowen@express-news.net
Baldcypress tress tower towards the sky along the Blanco River. The tree at the lower right is 579 years old.
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BOB OWEN/rowen@express-news.net
Todd Votteler of the Guadalupe-Blanco River Authority (GBRA) uses a GPS device to locate the old tree his team had discovered on a previous trip.
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BOB OWEN/rowen@express-news.net
Casteel surveys baldcypress tress along the Blanco River in Wimberly. A team of scientists from UT is drilling holes in the oldest trees to help the GBRA better understand droughts in Texas.
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BOB OWEN/rowen@express-news.net
Casteel uses a drill to take a core sample from the nearly 6-century-old baldcypress along the Blanco River near Wimberley. Researchers took several 2-millimeter-thick core samples from the tree.
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BOB OWEN/rowen@express-news.net
Casteel uses a drill to take a core sample from the nearly 6-century-old baldcypress along the Blanco River near Wimberley. The samples are taken by drilling perpendicular to the trunk and aiming for the center.
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BOB OWEN/rowen@express-news.net
Water streams from a hole drilled into the baldcypress to obtain a core sample from the tree. The water tasted and smelled of decaying wood. That's a common occurrence with the old trees, which often have rotten cores that become mini water towers. Sometimes, the water pressure is so great that the trees actually eject the core samples at the researchers.
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BOB OWEN/rowen@express-news.net
Casteel removes the core sample taken from the nearly 6-century-old baldcypress. The dowel will be placed in a plastic tube and shipped to the lab.
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BOB OWEN/rowen@express-news.net
GBRA's Votteler (left) and Casteel inspect the core sample taken from the nearly 6-century-old baldcypress. Narrow rings correlate to dry years; wide rings mean wet years.