Search for dissertations about: "on marine seaweeds"
Showing result 1 - 5 of 12 swedish dissertations containing the words on marine seaweeds.
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1. Marine Seaweed Invasions : the Ecology of Introduced Fucus evanescens
Abstract : Biological invasions are an important issue of global change and an increased understanding of invasion processes is of crucial importance for both conservation managers and international trade. In this thesis, I have studied the invasion of the brown seaweed Fucus evanescens, to investigate the fate and effect of a perennial, habitat-forming seaweed introduced to a coastal ecosystem. READ MORE
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2. Shell Age Economics : Marine Gathering in the Kingdom of Tonga, Polynesia
Abstract : This monograph analyses marine gathering in the Polynesian Kingdom of Tonga from ecological, social and cognitive perspectives. The overarching issues explored are (1) the significance of marine gathering in the past and present, (2) how seaweeds and marine invertebrates have been perceived, classified, named and used, (3) how they have been implicated in social relations, and (4) how the integration of the islands into the modern world system has affected the marine environment and the exploitation of its resources. READ MORE
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3. Marine seaweed invasions : Impacts and biotic resistance in native ecosystems
Abstract : Marine seaweeds constitute one of the most productive plant systems known on Earth and a rich fauna including juvenile fish and crustaceans is dependent on the habitats they form. Human influence on marine costal ecosystems has resulted in large scale changes to the abundance and distribution of species, where species introductions constitute an obvious part. READ MORE
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4. Sea cages, seaweeds and seascapes : Causes and consequences of spatial links between aquaculture and ecosystems
Abstract : Aquaculture is of growing importance in the global seafood production. The environmental impact of aquaculture will largely depend on the type of environment in which the aquaculture system is placed. READ MORE
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5. Grazing and the geographical range of seaweeds : The introduced Fucus evanescens and the newly described Fucus radicans
Abstract : Along the coast of temperate oceans brown algae of the genus Fucus form dense stands on rocky shores and are keystone species of the coastal ecosystem. These large seaweeds are perennial and function as substrate for many sessile marine organisms, provide shelter for fauna and juvenile fish, and are food source. A number of abiotic (e.g. READ MORE