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 24 for “"sandy beach"”.
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Sustainable ecological and recreational management of sandy beach systems
Sandy beaches are a primary focus of recreational and other pressures from growing coastal populations, and are major natural and economic assets for national and international tourism, but have not received adequate research attention prior to this study. Although the limited ecological research …
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Stranded kelp : its fauna and influence on sandy beach energetics.
… studies conducted on banks of kelp stranded on a sandy beach at Kommetjie on the west coast of the Cape Peninsula. The physical and chemical character of the beach are related to variations in the standing stocks and productivity of macro-, meio-fauna and bacteria as determined from a quantitative …
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Studies on the intertidal sandy-beach fauna of the Cape Peninsula
… and the second of the manuscripts deal with the sandy-beach snail, Bullia, while the sixth published paper is a brief account of food-relationships on the Cape Peninsula's sandy beaches. The first manuscript is an introduction to the ecology of the sandy beaches of the Cape Peninsula, the first …
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POPULATION ECOLOGY AND PRODUCTION OF THE SANDY-BEACH AMPHIPOD HAUSTORIUS CANADENSIS (CRUSTACEA: HAUSTORIIDAE) (MAINE, NEW ENGLAND)
… the structure of the amphipod-dominated marine sandy-beach communities along the Atlantic coast of the United States, little is known about the functional relationships within them. The goal of this study was to determine the seasonal trophic dynamics and life history of the sandy-beach amphipod …
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Aspects of the behaviour and ecology of White-fronted Sandplovers and Sanderlings on a South African sandy beach
… with the avian population of a southwestern Cape sandy shore and compares this population with those of sandy beaches in the eastern Cape and Natal. The abundance of birds and the estimated energy requirements of the avian populations in these three geographical areas increase during the austral …
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Physiology and energetics of the sandy-beach bivalve Donax serra Röding with special reference to temperature and chlorine tolerance
This thesis examines the physiology and energetics of D. serra and considers physiological responses to elevated temperature and chlorine levels typical of sea water discharged from a nuclear power station.
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Distribution, diet and kleptoparasitic behaviour of gulls (Aves: Laridae) in the southwestern Cape Province, South Africa
… at a range of foraging habitats; (i) a sandy beach; (ii). a rocky shore; (iii) a fishing harbour; and, (iv) a refuse dump. In addition, the proportion of marine prey in the diet of Kelp Gulls at a refuse dump, a sandy beach and at archaeological sites was estimated using stable carbon …
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A Framework for Assessing Lower-Bound Bearing Capacity of Sandy Coastal Sediments from Remotely Sensed Imagery
… for characterizing geotechnical properties of sandy beach sediments. Furthermore, the use of these moisture contents to estimate the soil strength of beaches has been limited. The goal of this research was to develop pathways to estimate the moisture content of sandy beach sites utilizing …
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The ecology of three sandy beaches on the West Coast of South Africa
The ecology of three sandy beaches on the west coast of South Africa is examined in this thesis. The first chapter constitutes an introduction to the subject and presents a brief review of studies carried out on beaches in South Africa in order to place this thesis into its proper context. In the …
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The utilization of littoral and estuarine habitats by fish in the Southwestern Cape
… examines the utilization of rocky intertidal, sandy-beach surf-zone and estuarine habits by fishes on the southwestern Cape coast of South Africa. It has there central objectives: 1) to determine the species composition, abundance, size structure and seasonality of fish and to examine the …
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Human disturbance impact on shorebirds at Muizenberg Beach, South Africa, during and prior to the COVID-19 lockdown
… socio-ecological services provided by the coast. Sandy beach ecosystems are prominent constituents of coastal regions and sought after for their recreational value, but these systems are understudied relative to more charismatic marine habitats such as coral reefs and kelp forests. Human …
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Physical and biological factors structuring sandy beaches macrofauna communities
Previous sandy beach research described beach macrofaunal communities according to the swash exclusion hypothesis (SEH). This hypothesis stated that more species are present on fine grained, flat dissipative beaches due to a more benign swash climate. It suggested that, as beach morphodynamics …
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Biology and ecological energetics of the supralittoral isopod Ligia dilatata
… fate of the kelp which is exported to adjacent beaches. A study by Muir (1977) showed the importance of kelp debris for the sandy beach amphipod Talorchestia capensis. The present study concerns the population dynamics and energetics of the supralittoral rocky shore kelp-eating isopod Ligia …
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Sediment size effects on self-organisation behaviour of rip channels
… frequently observed morphological pattern on the sandy beach, which are critical to the erosion of beaches as well as the safety of beach visitors. Field observations indicate the wave conditions and sediment characteristics exert the controlling effects on the states of beaches and determine the …
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Wind-Driven Sea Surface Wave and Coastal Water Level Dynamics Across Different Spatial Scales
… three scales: a coastal sea, a tidal bay, and a sandy beach. A numerical model is developed for the Strait of Georgia to investigate the influence of wind resolution on locally generated wave and storm surge. A finer scale numerical model is applied to Boundary Bay, a tidal flat within the Strait …
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Observations of surfzone vorticity using optical remote sensing
… Field experiments were conducted at a sandy beach on the Atlantic Ocean, and nearshore flows were observed using optical remote sensing (coastal imaging) and in situ sensors. Remote sensing algorithms are expanded from previous applications to estimate high spatial resolution …
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COMMUNITY ECOLOGY OF CHILEAN SANDY BEACHES
… during May, 1978 to April, 1980 in an exposed sandy beach of southern Chile (Mehuin Beach, Bahia de Maiquillahue). Beach characteristics differed significantly during these years; i.e. more sand erosion and coarser sand occurred during the first year. The lowest abundances of the total …
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Observations of Surfzone Vorticity Using Optical Remote Sensing
… Field experiments were conducted at a sandy beach on the Atlantic Ocean, and nearshore flows were observed using optical remote sensing (coastal imaging) and in situ sensors. Remote sensing algorithms are expanded from previous applications to estimate high spatial resolution …
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Influence of Geotechnical Properties on Sediment Dynamics, Erodibility, and Geomorphodynamics in Coastal Environments Based on Field Measurements
… for conducting geotechnical measurements of beaches, (2) advances portable free fall penetrometer (PFFP) data analysis in intertidal environments through the introduction of an impact velocity dependent strain-rate correction factor, (3) relates textural and sediment strength properties …
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