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DTSTART;TZID=America/New_York:20181101T133000
DTEND;TZID=America/New_York:20181101T143000
DTSTAMP:20260516T150924
CREATED:20181005T212126Z
LAST-MODIFIED:20181005T212406Z
UID:3406-1541079000-1541082600@cfwe.auburn.edu
SUMMARY:M.S. Seminar - Michael Ramirez
DESCRIPTION:M.S. Seminar: Michael Ramirez\, Maj. Prof\, Dr. Lisa Samuelson \nTitle: Impacts of drought and 40% throughfall reduction on water relations of a longleaf pine stand \nLocation: Dixon Conference Room\, 3315 \nDate: Thursday\, November 1\, 2018 \nTime: 1:30 p.m. \nAbstract: \nProjections of increased frequency and severity of climate change induced drought have raised concerns about the health\, productivity and composition of forests in the southeastern United States.  Longleaf pine (Pinus palustris Mill.) is a native species that thrives on sites that are frequently disturbed by fire and is thought to be more tolerant of drought stress than other southern pines\, making it a suitable species to withstand future climate conditions.  However\, the limits and mechanisms of that presumed drought tolerance are not known.  This study used in-situ manipulation of water availability to examine the effects of drought on water relations in a longleaf pine plantation.  Specifically\, the effects of a 40% reduction in throughfall precipitation on leaf water potential\, sap flux density\, whole-tree hydraulic conductance\, and productivity were investigated.  Following the installation of the throughfall reduction treatment in May 2016\, a prolonged natural drought occurred wherein little to no precipitation fell on the site from September 2016 until the end of November 2016.  Throughfall reduction was not found to effect leaf water potential or productivity during the 2016 natural drought but did reduce sap flux density and whole-tree hydraulic conductance.  As natural drought conditions alleviated in 2017\, the 40% throughfall reduction treatment did reduce sap flux density\, but did not significantly affect leaf water potential\, whole-tree hydraulic conductance\, or productivity.  Longleaf pine survived severe water deficit and may resist future climate change stress in the Southeast\, through a partially conservative water use strategy.
URL:https://cfwe.auburn.edu/event/m-s-seminar-michael-ramirez/
LOCATION:College of Forestry\, Wildlife and Environment\, 602 Duncan Drive\, Auburn\, AL\, 36849\, United States
CATEGORIES:Events,Master's Seminars
ORGANIZER;CN="Audrey Grindle%2C Graduate Student Coordinator":MAILTO:apg0008@auburn.edu
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