Thesis (D.Min.)--South Florida Center for Theological Studies, 2007. / Includes bibliographical references.

Caecidae is a widespread family of minute gastropod snails. Although a few species have previously been found in abundance in a few localized studies in Broward County waters, little is known about their richness, diversity, abundance and distribution in different habitats throughout local waters. This project examined species assemblages both qualitatively and quantitatively in a range of benthic habitats across Broward County. Samples were collected from five different habitat types from northern and southern Broward Country, and included two of each of the following five sites: mangrove, Intracoastal Waterway, creek, reef and rubble. Caecid specimens were removed from general samples, separated by species or developmental stage and preserved in 95% ethanol. Also, as artificial substrates have become an increasingly important resource enhancement technique, this project also compared Caecidae assemblages on artificial vs. natural substrates using a large dataset previously used primarily to examine amphipod crustacean assemblages. Species recorded in Broward County include Caecum pulchellum, C. imbricatum, C. floridanum, C. textile and Meioceras nitidum. Published records exist for 14 additional species collected elsewhere in South Florida (e.g., Palm Beach County). Descriptions, distributional data and synonymies summarizing available information are given for all 19 species. Nearly 97% of the specimens, including Caecum pulchellum, Caecum floridanum and Meioceras nitidum, were found on the reef and rubble habitats; approximately 2.5% percent were found in the Intracoastal; approximately 0.5% were found in the creek, and all taxa were absent in both mangrove habitats. A repeated measures MANOVA indicated no significant differences among any of the factors (reef type, substrate or genus) over time; (RM MANOVA, F=0.112, 2.596, 0.018, 4.604), p values = 0.769, 0.248, 0.906, 0.141) suggesting that there were no preferences in substrate material among the species investigated.

Caridean shrimp are a prominent element of seagrass faunal communities and play an important role in the energy transfer between trophic levels. They are a food source for other organisms and play an integral role in the ecosystem by feeding on algae and assisting with the breakdown of organic matter. Carideans are also fundamental to the marine fishery industry in that they are a food source for potentially valuable juvenile commercial fish. Ectoparasitic isopods (Cymothoida: Bopyridae) that infest caridean shrimps decrease the energy level of the shrimp, resulting in slower reaction time, greater predation rate, slower growth rate, and/or reduced egg production. However, in South Florida, little is known about the distributions and effects of parasitism among caridean shrimp in seagrass habitats. This research investigates the relationship of caridean shrimps and ectoparasitic isopods throughout several marine and brackish basins of coastal South Florida ranging from Lostmans River on the lower southwest mangrove coast through Florida Bay and Biscayne Bay. Samples were collected at the end of the wet season in 2010 and the dry season in 2011 using a 1-m2 throw-trap. Relations among isopods, carideans and environment were determined based on a series of biotic (host preference and availability) and abiotic (salinity, temperature, turbidity, water depth) factors. Bopyrid isopods were most abundant in Manatee Bay and Barnes Sound adjacent to the C-111 canal located in southern Biscayne Bay region and predominantly associated with Hippolyte spp. Logistical regression revealed that the likelihood of parasite presence is associated with higher temperatures, lower salinity, increasing depth, less seagrass coverage and greater macroalgae coverage. The results suggest that increased stressors in an environment, such as anthropogenic runoff, may also negatively impact host resistance to parasitism.

Sediments from four areas adjacent to marinas and a background site in the Intracoastal Waterway were assessed for macroinvertebrate composition and heavy metal contamination. Sediment core samples were collected in 2004 and 2005 for analyses of macroinvertebrate composition and sediment grain size. Additional sediment samples were collected in 2005 for chemical analyses of metals (Al, As, Cd, Cr, Cu, Fe, Pb, Hg, Ni and Zn). MANOVA and dendograms using Bray-Curtis similarity matrices grouped the sites into two clusters: the 3 sites closest to the New River formed one group, and the two end sites formed the other. The sites nearest the New River were dominated by polychaetes, half of which were pollutant-tolerant species (e.g., Capitella capitata). The macroinvertebrate communities of the two end sites were dominated by tanaids, gastropods and sipunculids with fewer annelids than the other 3 sites. The influence of the New River on the study sites appeared to outweigh the sources of metal pollution found in marinas. The 3 sites closest to the New River had higher metal concentrations than the two end sites. The background site, nearest the mouth of the New River, exceeded the Florida sediment quality guideline probable effect level for cadmium and copper while three of the four marina sites exceeded at most one probable effect level and one or more threshold effect levels for cadmium and copper. The furthest site from the New River, which was the closest site to Port Everglades, had the lowest metal concentrations. Additional studies are needed to determine the level of pollutant loading from the New River and its effects on nearby biological communities.

South Florida continues to become increasingly developed and urbanized. My exploratory study examines connections between land use and water quality. The main objectives of the project were to develop an understanding of how land use has affected water quality in Miami-Dade canals, and an economic optimization model to estimate the costs of best management practices necessary to improve water quality. Results indicate Miami-Dade County land use and water quality are correlated. Through statistical factor and cluster analysis, it is apparent that agricultural areas are associated with higher concentrations of nitrogen, while urban areas commonly have higher levels of phosphorous than agricultural areas. The economic optimization model shows that urban areas can improve water quality by lowering fertilizer inputs. Agricultural areas can also implement methods to improve water quality although it may be more expensive than urban areas. It is important to keep solutions in mind when looking towards future water quality improvements in South Florida.

This thesis addresses the lack of attention to practices that take place in settings not considered primarily religious, such as life-cycle rituals in the growing body of literature on religious practices of recently emerging African diaspora communities in the West. It argues that these practices are not only filters for indigenous African religious beliefs but also furnish for African migrants contexts that perform functions similar to those performed by the formal African diaspora religious institutions. Using ethnography, the study investigated the role of death rituals in the lives of Ghanaian members of the United Ghanaians Association of South Florida. The findings show that funerals organized in South Florida for relatives of members of the Association enable this trans-migrant community to participate in the lives of their relatives in Ghana. Funerals also furnish for these migrants contexts for performing aspects of their culture helping to cultivate a shared sense of being together or identity, in the process. The study suggests that to understand the full dynamics of African migrant religious experience, a respectful attention must be paid to all the rites of passage that African migrants perform in the West, not only those within formal religious institutions.

The Florida Reef and associated human community form a unique socio-ecological system. While this system represents great value to society, it is exposed to high levels of vulnerability. Despite intense study of its elements, the system lacks conceptual integrity, its management is fragmented, and user valuation remains unclear. A survey using contingent valuation methods investigated stakeholders' attitudes and how much they are willing to pay for sustainable seafood, coral reef restoration, and research funding for coral reefs in southeastern Florida. Respondents expressed angst about climate change and reef conditions, and they connected reef degradation to land-based pollution and water quality. Regression analysis revealed status (income, education) as weak, indirect predictors of behavior, age as a moderating influence, and environmental and emotive factors as strong, direct predictors. One's relative attachment to ecosystems, such as coral reefs, is theorized as a motivation that displaces the expectations of traditional economic theory.

The Greater Everglades system imparts vital ecosystem services (ES) to South Florida residents including high quality drinking water supplies and a habitat for threatened and endangered species. As a result of the altered Everglades system and regional dynamics, restoration may either improve the provision of these services or impose a tradeoff between enhanced environmental goods and services and competing societal demands. The current study aims at understanding public preferences for restoration and generating willingness to pay (WTP) values for restored ES through the implementation of a discrete choice experiment. A previous study (Milon et al., 1999) generated WTP values amongst Floridians of up to $3.42 -$4.07 billion for full restoration over a 10-year period. We have collected data from 2,905 respondents taken from two samples who participated in an online survey designed to elicit the WTP values for selected ecological and social attributes included in the earlier study (Milon et al. 1999). We estimate that the Florida general public is willing to pay up to $854.1- $954.1 million over 10 years to avoid restrictions on their water usage and up to $90.8- $183.7 million over 10 years to restore the hydrological flow within the Water Conservation Area.

Like many West Indians, mixed-race Jamaican immigrants enter the United States with fluid notions about race and racial identifications that reflect socio-political events in their home country and that conflict with the more rigid constructions of race they encounter in the U.S. This dissertation explores the experiences of racially mixed Jamaicans in South Florida and the impact of those experiences on their racial self-characterizations through the boundary-work theoretical framework. Specifically, the study examines the impact of participants’ exposure to the one-drop rule in the U.S., by which racial identification has been historically determined by the existence or non-existence of black forebears. Employing qualitative data collected through both focus group and face-to-face semi-structured interviews, the study analyzes mixed-race Jamaicans’ encounters in the U.S. with racial boundaries, and the boundary-work that reinforces them, as well their response to these encounters. Through their stories, the dissertation examines participants’ efforts to navigate racial boundaries through choices of various racial identifications. Further, it discusses the ways in which structural forces and individual agency have interacted in the formation of these identifications. The study finds that in spite of participants’ expressed preference for non-racialism, and despite their objections to rigid racial categories, in seeking to carve out alternative identities, they are participating in the boundary-making of which they are so critical.

An integrated surface-subsurface hydrological model of Everglades National Park (ENP) was developed using MIKE SHE and MIKE 11 modeling software. The model has a resolution of 400 meters, covers approximately 1050 square miles of ENP, includes 110 miles of drainage canals with a variety of hydraulic structures, and processes hydrological information, such as evapotranspiration, precipitation, groundwater levels, canal discharges and levels, and operational schedules. Calibration was based on time series and probability of exceedance for water levels and discharges in the years 1987 through 1997. Model verification was then completed for the period of 1998 through 2005. Parameter sensitivity in uncertainty analysis showed that the model was most sensitive to the hydraulic conductivity of the regional Surficial Aquifer System, the Manning's roughness coefficient, and the leakage coefficient, which defines the canal-subsurface interaction. The model offers an enhanced predictive capability, compared to other models currently available, to simulate the flow regime in ENP and to forecast the impact of topography, water flows, and modifying operation schedules.