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 12 of 12 for “"Scuba Divers"”.
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Impacts of SCUBA divers in the Silfra groundwater fissure : ecological disturbance and management
… number of entrees, receiving just below 20.000 divers and snorkelers in 2014. This interdisciplinary thesis explored the relationship between the growing number of dive tourists and potential environmental impacts by: 1) comparing algal biomass and zoobenthic diversity of Silfra to Flosagjá, a …
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Spiritual experiences and environmentalism of recreational users in the marine environment: New Zealand surfers and scuba divers
… spirituality to be a dimension of surfing and scuba diving has received far less scientific attention. Surfing and scuba diving are the focus of this research as a means to inform future policy decisions and research on spiritual connections to the marine environment. This study used …
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An Economic Analysis of Using Retired Vessels to Create Artificial Reefs in Costa Rica
… the world’s landmass, but 5% of the world’s biodiversity, making it a leading ecotourism destination. Ecotourism is one of the main sources of revenue for the country, but the degradation of coastal reefs has resulted in a significant loss of financial income for developing areas. As a result, …
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Use of American Sign Language for Underwater Communication
… of this study was to determine if beginning SCUBA divers with the use of sign language would reveal less anxiety and more self confidence, perform underwater tasks faster and perceive themselves safer and enjoying diving more because of their use of signs than two control groups without the …
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Taxonomy, systematics and biogeography of South African actiniaria and corallimorpharia
… literature. Photographic records submitted by SCUBA divers, and specimens collected during the course of this study provided more recent data.
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Troubled waters : the battle over shipwrecks, treasure and history at the bottom of the sea
… historians and cultural managers) and hobbyist SCUBA divers.
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Parasite assemblages of three endemic catshark species from the west and south coasts of South Africa
… 105 cm respectively. Sharks were collected by SCUBA divers and rod and line fishing from four sites between Saldanha Bay and De Hoop Nature Reserve. Parasites from the skin, gills, body cavity, spleen, stomach and intestine were counted, removed, and fixed as appropriate.
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Balancing Acts : Public Access And Archaeology In The Cape Fear Civil War Shipwreck District
… stewardship programming, specifically targeting SCUBA divers, for six shipwrecks located in the New Inlet unit of the Cape Fear Civil War Shipwreck District. The goal of this thesis is to examine the process and procedures used to balance archaeological preservation and research with public …
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Propeller based human powered swimming device
… of this device is primarily geared towards scuba divers and swimmers moving beneath the water surface. Through various tests we were able to prove that the design concept is valid, but alterations are still necessary to reach optimal speed. One such improvement would be enlarging the size of …
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An evaluation of diver performance using different safety vest detonators
… attempt was made to evaluate the performance of SCUBA divers in pulling the detonator knob on the diver's personal floatation device while treading water. Three shapes, three sizes, and three positions of the detonator knob were tested to determine their effects on the time it took divers to …
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Studies of sediments in a tidal environment
… sonar surveys calibrated by direct sampling by SCUBA divers: (i) uniform mud depocentres, (ii) areas of continual sediment reworking, (iii) areas of relict sedimentation, (iv) areas of episodic deposition and, (v) clean-washed rock outcrops. Net sediment transport paths are defined using the …
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Understanding Seahorse Distribution and Ecology in Malta through Citizen Science
… encountered by the public (particularly by scuba divers) in Maltese waters and as Malta is considered a centre for recreational Scuba diving in Europe, it was deemed a good candidate for a sub-aquatic citizen science initiative. In this study, citizen science approaches were compared to …