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dc.contributor.advisorHouseman, Gregory R.
dc.contributor.authorWong, Bryant M.
dc.descriptionThesis (M.S.)--Wichita State University, College of Liberal Arts and Sciences, Dept. of Biological Sciences.en_US
dc.description.abstractThere is growing interest in whether invasive species may be controlled by targeting key life stages or by tailoring different management strategies to the specific characteristics of particular life stages. In this study, I test whether fire targeted at seed or seedling stages of sericea can increase mortality and potentially limit the spread of this invader. Two field experiments were performed manipulating the timing of fire and a laboratory experiment was conducted that quantified germination rates. The field experiments revealed that seedling survivorship varied with timing of burns and plant age, but these variables only accounted for a small amount of the variability in survivorship (R2 = 0.09, P = 0.032), suggesting that sericea seedlings quickly reach a size from which they can resprout. At the seed stage, fire greatly enhanced cumulative germination in the field burns. In contrast, the lab experiment showed that fire inflicted extremely high mortality on sericea seeds, suggesting that, in the field, seeds gain protection from fire as they mix with soil and that fire may increase germination due to enhanced resource availability. Taken together, my results illustrate that, although targeting vulnerable life stages is a sound strategy for invasive species control, careful preliminary studies may be needed to unravel complex interactions between biotic and abiotic variables before effective solutions can be devised.en_US
dc.format.extentvii, 21 p.en
dc.publisherWichita State Universityen_US
dc.rightsCopyright Bryant M. Wong, 2011. All rights reserveden
dc.subject.lcshElectronic dissertationsen
dc.titleReducing invasion by targeting vulnerable life stages: effects of fire on survivorship of Lespedeza cuneataen_US

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  • BIO Theses
  • LAS Theses and Dissertations
    Theses and dissertations completed at the College of Liberal Arts and Sciences (Fall 2005 -)
  • Master's Theses
    This collection includes Master's theses completed at the Wichita State University Graduate School (Fall 2005 -- current) as well as selected historical theses.

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