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Regional Rarity: Consequences Of Dispersal Limitation And Strategies For Reintroduction, Steven James Kroiss
Regional Rarity: Consequences Of Dispersal Limitation And Strategies For Reintroduction, Steven James Kroiss
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Understanding factors that limit species distributions within restored habitats has been a longstanding goal of restoration ecology, particularly with respect to differences between rare and widespread species. Numerous mechanisms have been proposed to contribute to rarity, including species traits, propagule limitation, ecological requirements, and population level processes such as demographic and environmental stochasticity. Yet, our understanding of species rarity remains limited since few studies have examined how these factors act in concert. This dissertation examines how these mechanisms may interact to influence the distribution and population establishment of plant species in restored xeric glades in the Missouri Ozarks: USA). First, …
Calcium-Stimulated Adenylyl Cyclases Are Critical Modulators Of Fear Learning And Experience-Dependent Plasticity, Lindsay Wieczorek
Calcium-Stimulated Adenylyl Cyclases Are Critical Modulators Of Fear Learning And Experience-Dependent Plasticity, Lindsay Wieczorek
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Stress can exacerbate psychiatric disease, often resulting in cognitive deficits. Consequently, a better understanding of what modulates stress-facilitated memory processing will help identify new targets for possible therapeutic intervention. Recent evidence suggests a role of the Ca2+-stimulated adenylyl cyclases: AC), AC1 and AC8, in modulating fear memory. Ca2+-stimulated AC activity couples neuronal activity and intracellular Ca2+ increases to the production of cAMP, and therefore, can very tightly regulate signal transduction after learning; yet, the details by which this occurs are not well understood. In this dissertation, I first investigated the temporal and regional importance of Ca2+-stimulated AC activity during different …