Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 37 for “"barnacles"”.
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The Burrowing Barnacles (Cirripedia, Acrothoracica) of South Africa
The Acrothoracica of South Africa are reviewed for the first time, 50 years after the last publication on this group appeared. A new host category for acrothoracicans is described in Chapter 1, as Weltneria spinosa was collected from coralline red algae. This finding was not an isolated event, as …
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Reproduction, settlement, and phenology of intertidal barnacles: implications for larval dispersal
… reproduction and settlement timing of intertidal barnacles, and I explore the extent to which the timing of these events is explained by environmental and astronomical cycles and by water column conditions. In Chapter 2, I assess the cycles driving Chthamalus fissus reproduction and settlement in …
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Reproduction, settlement, and phenology of intertidal barnacles: Implications for larval dispersal
… reproduction and settlement timing of intertidal barnacles, and I explore the extent to which the timing of these events is explained by environmental and astronomical cycles and by water column conditions. In Chapter 2, I assess the cycles driving Chthamalus fissus reproduction and settlement in …
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Adult demography and larval processes in coastal benthic populations intertidal barnacles in Southern California and Baja California
… regional patterns in demography of intertidal barnacles in Southern and Baja California. Horizontal and vertical distributions, and the mortality rates of larvae, were assessed from short tenn (i.e. days) smallscale observations (0.1-1 km) in nearshore waters. Observations on spatial …
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Adult demography and larval processes in coastal benthic populations : intertidal barnacles in Southern California and Baja California
… regional patterns in demography of intertidal barnacles in Southern and Baja California. Horizontal and vertical distributions, and the mortality rates of larvae, were assessed from short term (i.e. days) small- scale observations (0.1-1 km) in nearshore waters. Observations on spatial …
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Comparison of the Barnacle, Balanus amphitrite, in Different Environments
… 45 %o at 15 °C and in 0 %o at 35 °C. Salton Sea barnacles consumed more oxygen in higher salinities and at higher temperatures than San Diego Bay barnacles.</p> <p>Results of survival experiments (T<sub>50</sub>) in the same 18 conditions for 48 hours • indicated that no animals died at 15 ° and …
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Native And Invasive Competitors Of The Eastern Oyster Crassostrea Virginica In Mosquito Lagoon, Florida
… time, 3) determine how the dominant competitors, barnacles, affect oyster settlement, growth and survival, and 4) determine if oyster or barnacle larvae are better able to settle in increased sediment and flow conditions that are associated with high levels of recreational boating. Lift nets were …
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A study of marine fouling in Monterey harbor
… organisms in Monterey Harbor were found to be barnacles, bryozoa, serpulids and hydrolds. The number of barnacles attaching to test palllets reached a peak in early April and then dectlned. The amount of fouling on the test panels increased with depth. Wood was determined to be the best surface …
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Physiological Response of the Giant Acorn Barnacle, Balanus nubilus, to Air Exposure
… Next, we compared the average MO<sub>2 </sub>of barnacles held in water and air for 6h at three common temperatures (10, 15, or 20°C) using intermittent (aquatic) and closed-system (air) respirometry. Lastly, we investigated the respiratory behaviors (% time operculum open, %time testing, % time …
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Recruitment patterns and processes and the connectivity of rocky shores in southern Africa
This thesis addresses the recruitment patterns of barnacles and mussels at a range of spatial and temporal scales and attempts to relate them to larval and adult abundance, as well as to local productivity and oceanographic conditions that would influence larval transport and the connectivity of …
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Exploring the Interface Between Macroorganisms and Microorganisms: Biochemical, Ecological, and Evolutionary Contexts
… uses of crustacean secretions are explored for barnacles, fiddler crabs and blue crabs. Fluids of interest were secretions released during barnacle settlement and metamorphosis and those collected from living adult barnacles, fluids on fiddler crab sensory appendages including dactyl washings …
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Evolutionary and ecological genomics in deep-sea organisms
… biogeographic hypotheses of vent fauna using barnacles as model. Phylogeographic inferences suggest that the western Pacific was the place of origin of the major vent barnacle lineage, followed by circumglobal colonization eastward along the southern hemisphere during the Neogene. I suggest …
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Biologically induced alternative states in two rocky subtidal benthic communities
… of whelks, mostly Burnupena spp. and the barnacles Austromegabalanus cylindricus and Notomegabalanus algicola. In contrast, Malgas Island is dominated by a large population of the rock lobster Jasus lalandii together with a dense seaweed flora, and has small numbers of the ribbed mussel …
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The Marinhieros Project: Roseneath Rd & Patterson Ave
… cultural connotations of 'weed' cling to it like barnacles, removing the word from its true value. We reevaluate meaning, chronicling all the possible constructions of a word, all the possible varieties, where it came from, what its uses are, etc. We can then begin to develop an aggregate meaning …
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UNDERWATER BONDING WITH POLYMER MIMICS OF MUSSEL ADHESIVE PROTEINS
… shellfish are the true experts. Mussels, barnacles, and oysters attach to rocks with apparent ease. Yet our man-made glues often fail miserably when trying to stick in wet environments. Results described herein focus on poly[(3,4-dihydroxystyrene)-co-styrene], a polymer mimic of mussel …
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A Mechanistic-Based Approach to Reduce Biological Adhesion
… hulls have been encrusted with foulers including barnacles, oysters, and mussels. With the attachment of these animals, vessels exhibit a decrease in top speed while fuel consumption increases. This not only becomes expensive, but also has contributions to climate change. Current antifouling …
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Evolutionary and ecological genomics in deep-sea organisms
… biogeographic hypotheses of vent fauna using barnacles as model. I suggest that the geological processes and dispersal mechanisms discussed here can explain distribution patterns of many other marine taxa. I then move on to resolve long-standing questions regarding species definitions in …
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Evaluation of the Development and Effectiveness of Copper Total Maximum Daily Loads (Tmdls) to Achieve Marine Water Quality Criteria
… known to be toxic to aquatic organisms (e.g., barnacles, algae, and fish). For a number of these chemicals (e.g., tributyltin [TBT], copper) federal and state water quality standards exist to protect aquatic organisms. As a means to comply with water quality standards, regulatory agencies …
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Larval dispersal and population connectivity: implications for offshore renewable energy structures
… of MREDs, the larval dispersal processes of barnacles (Cirripedia: Thoracia) in the Firth of Lorn (Scotland) are assessed at<br/>scales ranging from mm to 10s ¿ 100s km. At the scale of the organism itself, significant differences in larval mass densities and sinking velocities were observed …
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Tipping points, regime shifts and species interactions within shallow marine ecosystems
… dominated by green algae, those dominated by barnacles and those dominated by brown algae. Grazer number and biodiversity was higher on the latter of these boulder states. We then manipulated a green algae dominated system, by either removing 20% of the algae on the rock or by the addition of …
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