Thesis (M.S.)--University of South Florida, 2003. / Title from electronic document title page. Document formatted into pages; contains 103 pages. Includes bibliographical references.

In 2001, the Coral Reef Evaluation and Monitoring Program (CREMP) began monitoring the abundance and area covered by three clionid sponges (Cliona delitrix, C. lampa, and C. caribbaea). Subsequently, monitoring has been conducted annually at all 40 CREMP sites throughout the Florida Keys National Marine Sanctuary (FKNMS) and the Dry Tortugas. Between 2001 and 2002, mean clionid area decreased significantly from 7.6 cm2/m2 to 4.6 cm2/m2 (Wilcoxon; p= 0.035). Between 2002 and 2003, the decline to 4.5 cm2/m2 was not significant. Approximately 80% of all clionid colonies recorded at the CREMP stations covered less than 50 cm2. Among all recorded stony coral species, Montastraea annularis, M. cavernosa, and Siderastrea siderea were the most frequently and extensively invaded by clionid colonies. However, the vast majority of clionid colonies occurred in substrata not associated with a live coral colony. The mean percent cover for the four coral species identified to be most susceptible to clionid invasion had the greatest decline in the Dry Tortugas deep stations between 2001 and 2003. At Lower Keys patch-reef stations, mean percent cover showed a small, steady decrease, while at Upper Keys patch-reef stations, a small steady increase occurred. Fifteen water-quality parameters collected by the Water Quality Monitoring Network (WQMN) were analyzed to determine if clionid distributions correlated with water quality. When patch-reef sites were analyzed as a subset of sites, clionid area and abundance correlated strongly ( 0.65) with water-quality parameters that indicated higher nutrient flux and food resources. However, the correlation was weak when all 39 CREMP sites were considered ( 0.10). Clionid sponges are well known to be aggressive and successful bioeroders on coral reefs.

Allochthonous, seaward-dipping deposits that flank reef-rimmed carbonate platforms (reef-rimmed carbonate foreslopes) display a spectrum of deposit types, seismic-scale stratal architecture, and bed-scale heterogeneity due to diverse sediment sources and resedimentation processes. This variability has resulted in a lack of consistent characterization approaches, and has made the development of predictive models that link carbonate foreslope deposit types to stratal architecture challenging. This study uses data from outcrops, including the Upper Devonian of the Canning Basin, Western Australia and the Upper Permian of the Delaware Basin, West Texas, and examples from literature to provide 1) an approach for characterizing reef-rimmed carbonate foreslopes in terms of deposit types and architecture, 2) conceptual models that outline the variations that exist, and 3) discussion of the intrinsic and extrinsic factors that control the observed variations. The primary depositional elements that construct reef-rimmed carbonate foreslopes can be categorized as 1) debris elements (breccias and blocks) from brittle reef failure, 2) grain-dominated elements (grainstones and rudstones) from offbank transport of sand and gravel, and 3) mud-dominated elements (mud-dominated fabrics) that record relative foreslope quiescence and fine-grained periplatform shedding. The fundamental stratal geometries observed are 1) accretionary margins, characterized by margin-toforeslope interfingering and clinoforms, and 2) escarpment margins, characterized by aggrading-retrograding margin architecture and foreslope onlap. The combinations of element proportions, element distribution, stratal geometry, bed- to bedset-scale architecture, and depositional profile scale that exist in carbonate foreslopes range widely, warranting multiple depositional models. The deposit type and architectural variations observed in detail from Upper Devonian and Upper Permian outcrops of the Canning Basin, Western Australia, and the Delaware Basin, West Texas, respectively, are linked to differing scales of superimposed accommodation change and reef faunal assemblage. Observations from other outcrops and extensive literature review display further controlling factors that affect carbonate foreslope development, such as platform morphology, oceanographic conditions, slope height, tectonic setting, and siliciclastic input, suggesting a multi-variable interplay of controls. These controls dictate the productivity and resedimentation of the contributing sediment factories, and/or influence the development of the carbonate platform system as a whole. Knowledge and classification of carbonate foreslope deposit types, architecture, and controls not only improve understanding of these complex systems, but also allow for the development of predictive relationships for economic purposes. / text

The purpose of this report is to help fisheries officials better understand the cultures of small - scale fishing communities. By doing so they will be better prepared to develop more successful management policies and practices, and to help people in such communities to have more decent lives. The paper discusses cultural characteristics of small-scale fishing communities that are particularly important for fisheries officials to understand. Methods which might help fisheries managers to obtain trustworthy and reliable information about fishing cultures in an ethical manner are also suggested, including methods for rapidly acquiring important information while working within tight budgetary and time constraints. Recommendations appearing near the end of the paper provide guidance concerning how the foregoing objectives can be achieved, underscoring the importance of sustaining small –scale fishers' rights of access to fisheries resources while making their cultures integral considerations in fisheries- management policies and practices. Buen Hombre is one of six case studies of contemporary small -scale fishing communities from distinct world -culture regions are annexed at the end, richly exemplifying many of the issues discussed in this report The essay written by Richard Stoffle is about the people of Buen Hombre, a small coastal fishing and farming village of about a thousand people located on the north coast of the Dominican Republic near the Haitian border. It is found on pages 219 – 245. The people of this village deal with the normal and abnormal problems of change. These changes are sometimes global and sometimes local. Changes occur in their climate, economy, and their environment. The people of this village prepare for and accommodate to these changes by (1) promoting a conservation ethic and (2) limiting access to their marine resources. When they are successful, fish -based food security issues are ameliorated. This essay discusses food security issues as these were faced by the people of the village of Buen Hombre from 1985 to 1995. While this is a very small segment of time, many changes did occur and these illustrate key temporal and spatial processes. Short-term changes in the economy and climate are common for coastal peoples who must constantly adjust their adaptive strategies to survive. The full reference for the entire report is: McGoodwin, James, R. (2001). Understanding the Cultures of Fishing Communities: A Key to Fisheries Management and Food Security. Rome, Italy: Food and Agricultural Organization of the United Nations; FAO Fisheries Technical Paper 401.

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Generations of hard corals have built the complex reef ecosystems that harbour a huge diversity of sea-life in the world’s shallow tropical oceans. These undergo both sexual and clonal reproduction, and may contain signatures in their genomes which help to decipher the riddles of past population dynamics and evolutionary history. Two species of coral, Acropora austera and Platygyra daedalea, were collected from sites along the east African coastline from Kenya in the north to Maputaland, South Africa in the south, and from the Chagos Archipelago. Sequences of two different DNA regions were tested, in a preliminary study, for their potential ability to elucidate connectivity and differentiation among these coral populations. These were the nuclear ribosomal ITS region of P. daedalea populations, and a previously-unused marker, the carbonic anhydrase 3/550 nuclear intron of A. austera. These molecular markers indicated high levels of connectivity amongst populations in a preliminary study based on limited sample sizes and a subset of populations. It was decided to further explore the variability of the carbonic anhydrase 3/550 intron, which showed evidence of subdivision and structuring within Mozambique populations relative to South African populations, in a study in which both the sample size per site and the number and range of sampled sites were increased. ITS sequences, although highly variable, revealed no population differentiation in P. daedalea; STR markers were used in subsequent studies of population differentiation in this species. Populations of both A. austera and P. daedalea showed signs of high connectivity along the region of the coastline sampled in this study. However, there appeared to be a disjunction in ecological connectivity between reefs in Maputaland, South Africa and those in southern Mozambique, between Durban and Maputo where the Agulhas Current originates. This was reinforced in A. austera populations which displayed a region of genetic discontinuity between Inhaca Island and Maputaland reefs of the central reef complex, in the region of Rabbit Rock. Northern reef complexes also harboured unique haplotypes in contrast to southern reefs which shared all haplotypes with those in the north, an indication that northern reefs have seeded the southern (Maputaland) reefs. P. daedalea populations appeared evolutionarily panmictic over scales relevant to this study. Evidence for fine-scale structure indicated that populations were separated from one another over ecologically relevant time-scales. These populations were defined by both their habitats and their sampling location. There was a possibility that the Platygyra species complex included cryptic species that were not distinguishable from P. daedalea. However, the disjunction in the connectivity between northern and southern population groups was also evident in the population structure of P. daedalea. There was a net immigration of propagules of both P. daedalea and A. austera into populations north of the disjunction between groups, where the prevailing current regime is dictated by the Mozambique Channel eddies. In contrast populations to the south of the disjunction (the southern population group) which are subject to the swiftly flowing Agulhas Current, showed a net emigration of propagules from Maputaland reefs. These emigrants were likely to be lost to inhospitable habitat south of the marginal Maputaland region. Although there was evidence for migration of both Platygyra and Acropora propagules between the Bazaruto Archipelago reefs and certain Maputaland reefs, genetic exchange between Mozambique and Maputaland reefs appeared to be limited and may have occurred primarily at evolutionary rather than demographic levels. Managers may need to treat the regional Maputaland reefs as separate stocks and manage them accordingly, as the relative isolation of these corals in the central and southern reef complexes in Maputaland, South Africa, means that they are at risk to losing species to evolutionary extinction. It is also important that reef health in northern Mozambique and Tanzania is maintained as, despite evidence of a break in demographic connectivity, between reefs in these regions and those in Maputaland, there was evidence to suggest that reefs were connected at evolutionary scales, thus maintaining levels of genetic diversity on southern African reefs. / Thesis (Ph.D.)-University of KwaZulu-Natal, Westville, 2010.

Marine reserves are promising tools for fisheries management, and are especially suited for complex, multi-species fisheries. Recent work has focused on the design of reserves to achieve particular management objectives and on defining appropriate indicators for monitoring to determine whether these objectives are being met. In principle, there should be a strong correlation between biological, social and economic indicators that are all correlated with fish abundance and ecosystem health. In practice, different indicators are often inconsistent, and it is common for researchers and fishers to have conflicting opinions on how well reserves are meeting management goals. I suggest that these discrepancies are not necessarily due to conflicting opinions regarding management objectives, but rather that the inherent biases in different sampling schemes may cause different measures of the same parameter to be uncorrelated. For example, scientists tend to sample only snapshots in time and space in randomly chosen locations, while fishers sample over much greater temporal and spatial scales but in non-random locations. Furthermore, marine ecosystems are extremely complex, and failing to account for the full extent of this complexity may lead to erroneous measurement of biological trends. The purpose of this dissertation is to determine the causes of discrepancies between different types of indicators using a multidisciplinary approach. A detailed study of the Glover’s Reef Marine Reserve (GRMR) in Belize provides a basis for comparison. Chapters 2 to 4 of the dissertation focus on understanding how the GRMR has functioned to produce fisheries benefits, and elucidating some of the factors responsible for variation in species’ responses to reserve protection. Chapters 5 to 7 of the dissertation focus on comparisons of different indicators of changes in fish abundances, and explain the circumstances under which indicators may disagree. With a better understanding of the functioning of the GRMR based on both scientific and local knowledge, efforts can be made to develop more appropriate indicators, and these indicators can then be tested for use in other coral reef reserves worldwide.

Missing leaves: 170. / Mode of access: World Wide Web. / Thesis (Ph. D.)--University of Hawaii at Manoa, 2005. / Includes bibliographical references (leaves 190-203). / Electronic reproduction. / Also available by subscription via World Wide Web / xvi, 203 leaves, bound ill. (chiefly col.), col. maps 29 cm

Thesis (M.S.)--University of Hawaii at Manoa, 2005. / Includes bibliographical references (leaves 72-76). / vii, 99 leaves, bound ill. (some col.), maps (some col.) 29 cm