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Full-Text Articles in Biology
Intraspecific Variation In The Recruitment Dynamics Of A Transgressing Avicennia Germinans Population, Shannon Victoria Grogan
Intraspecific Variation In The Recruitment Dynamics Of A Transgressing Avicennia Germinans Population, Shannon Victoria Grogan
USF Tampa Graduate Theses and Dissertations
Survival and establishment of mangrove propagules at higher tidal elevations beyond the landward margin of their distribution is a requirement for the continued existence of mangrove populations in response to rising sea-level. Despite the growing body of literature that discusses mangrove recruitment patterns, few studies have empirically examined establishment and post-establishment growth success of propagules at the higher intertidal positions into witch mangrove populations are migrating. Using an experimental field approach, this study compares establishment and post-establishment growth success of propagules at three positions across a tidal elevation gradient within a landward-transgressing mangrove population of SW Florida (USA). I observed …
Population Genetics Of Amphiuma Means And Siren Lacertina In Central Florida, Anna C. Deyle
Population Genetics Of Amphiuma Means And Siren Lacertina In Central Florida, Anna C. Deyle
USF Tampa Graduate Theses and Dissertations
Population structure can be defined as a difference in the frequencies of alleles among populations, and it is often caused by barriers to dispersal. I used mitochondrial DNA sequences to examine the population structure of two large, aquatic salamanders, Amphiuma means (the Two-Toed Amphiuma) and Siren lacertina (the Greater Siren), at two spatial scales in peninsular Florida. Both species appear to have similar life histories, including poor dry land dispersal capabilities, and I hypothesized that they would exhibit significant population structure at both broad and fine scales. Wetland loss and landscape fragmentation are certain to have caused decreases in abundance …