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Effects Of Flooding On Photosynthesis And Root Respiration In Salt Cedar (Tamarix Ramosissima), An Invasive Riparian Shrub, Kristen Polacik
Effects Of Flooding On Photosynthesis And Root Respiration In Salt Cedar (Tamarix Ramosissima), An Invasive Riparian Shrub, Kristen Polacik
Master's Theses
The introduced shrub Tamarix ramosissima Lebed. invades riparian zones, but loses competitiveness under flooding. This was tested in Tamarix ramosissima by examining responses to flooding by soil type in a greenhouse setting. A field study examined responses of Tamarix ramosissima and other species to natural flooding. Leaf level photosynthesis rates, stomatal conductance, transpiration, and root alcohol dehydrogenase (ADH) activity were measured weekly to assess oxygen stress. In the field, stomatal conductance, leaf water potential, transpiration, canopy cover, and δ13C were measured as responses to soil water potential, soil moisture, Julian date, relative humidity, and water depth. In the greenhouse study, …