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 13 of 13 for “"Intertidal community"”.
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Avian determinants of rocky intertidal community structure in South Africa
… by the seabirds washed off the islands into intertidal and nearshore waters,where it provides a source of inorganic and organic nutrients. The concentrations of nutrients in intertidal rockpools at island and mainland sites in the Saldanha Bay area were measured,and the biological structures …
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Interactive processes in a Lanice conchilega (Annelida: Polychaeta) dominated intertidal community
… into the factors influencing a soft-sediment intertidal benthic community dominated by the large tube building polychaete Lanice conchilega (Pallas, 1766). The environmental and biological characteristics of a mid-shore sampling site on a relatively sheltered sandflat were monitored over a two …
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Patterns and causes of intertidal community structure around the coast of Southern Africa
… analysis was undertaken using data for intertidal rocky-shore communities obtained from quantitative biological surveys made around the southern African coast. Substantial differences in species composition, abundance and trophic structure were found between 15 different rocky shores …
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Ecology of chemical defenses of algae against the herbivorous snail, Littorina littorea, in the New England rocky intertidal community
In the New England rocky intertidal community, space is dominated by two perennial plant types, brown fucoid algae (Ascophyllum nodosum and several species of Fucus) in the mid zones and the red alga Chondrus crispus in the low zones. These algae are not grazed by the predominant herbivorous snail, …
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The role of macroalgal morphology and community structure on the accumulation of sediment and the subsequent effects on the dynamics of marine intertidal communities
This study examines the influence of intertidal macroalgae on sediment accumulation, and the effect of sediment cover on intertidal community structure.Three shores on the North Yorkshire coast, England, were used to investigate differences in the quantity of sediment trapped by ten morphologically …
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Impacts of the introduced crabs, Carcinus maenas and Hemigrapsus sanguineus, in northern New England
… on several native mollusc species but the community wide impacts of its introduction have been relatively neglected. Hemigrapsus sanguineus is just beginning to establish populations in this region, and its effects on the resident community are unknown. Both monitoring and experimental …
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Distribution and abundance of soft-sediment intertidal Polychaetes
Polychaetes are important components of the intertidal sandflat community in Lawson’s Flat, Dillon Beach, California. Little is known about the factors that control the relative abundance of these species. In view of the extensive evidence of the importance of interactions between component species …
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Large-scale forcing of coastal communities
… PPP would have a direct bottom-up influence on intertidal community structure with the Clyde expected to be dominated by filter feeders with potentially greater larval recruitment, increased density, faster growth and larger maximum sizes.<br/>The study was divided into five sections examining …
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Sea Star Wasting Disease in Pisaster Ochraceus on the Washington Coast and in Puget Sound
… mussel) increases the biodiversity of its intertidal community. Sea star wasting disease is an illness that causes sea star tissues to become necrotic until the creature wastes away and dies. In 2013, a coast wide outbreak of sea star wasting disease caused a mass mortality event in <em>P. …
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Measuring and Forecasting Environmental Conditions From the Perspective of Rocky Intertidal Organisms
<p>Marine intertidal organisms live in a habitat that is characterized by acute environmental gradients determined by tides, waves, and weather. Models that incorporate these parameters can be used to predict and understand the distributions of organisms on both local and latitudinal scales. …
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Historical changes on rocky shores in the Western Cape, as revealed by repeat photography
… organisms, and to record the changes in community structure that take place with time.” This list does not take into account the advantages of video to document behavioural studies. As the old adage explains, “a picture is worth a thousand words” and photographs taken at the shore are …
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Population Genomics, Ecology and Conservation of <i>Asterias</i> Sea Stars in the North Atlantic
… the influence of environmental change on intertidal species’ distributions and genomics at several timescales, with implications for conservation.</p> <p>Environmental changes have occurred throughout history, on a geological scale, and have shaped the global patterns of species’ …