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 9 of 9 for “"benthic-pelagic coupling"”.
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Benthic-pelagic coupling : rocky intertidal communities and nearshore oceanographic conditions across multiple scales
In Chapter 1, I characterize geographic patterns in rocky intertidal communities across 6° of latitude along the west coast of South Africa and examine the spatial structure of functional group biomass in relation to wave action and upwelling intensity. Despite between-habitat differences in …
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Effects of burrowing sandprawns (Callichirus kraussi) on urban estuarine water quality
… mitigate eutrophication. However, burrowing endobenthic organisms have not yet been considered as a NBS, despite their potential to greatly impact water quality. Therefore, the purpose of this study was to determine whether these endobenthic organisms could be effective as NBSs, more specifically …
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The Effects of Benthic Organisms on Intertidal Sediment Erodibility
… erosion of surface sediments is also vital to benthic-pelagic coupling, where resuspended microbes and organic material become available to suspension feeders and/or transported to adjacent habitats. On sandflats, the organisms living within sediments have been proven to be key drivers of …
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Organic Carbon Cycling in East China Sea Shelf Sediments: Linkages with Hypoxia
… transport likely caused the observed lack of benthic-pelagic coupling of pigment concentrations between the surface sediments and the water column after the summer flood in 2010. For the down-core sediment, the mass accumulation rate distribution followed the dispersal pathway of the ECS …
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Diversity of New Zealand Deep-sea Amphipoda
… with surface chlorophyll a, suggesting strong benthic-pelagic coupling. In Chapter 2, I used molecular methods (COI DNA sequence thresholds of 6%) to estimate species diversity in the dominant amphipod family identified from Chapter 1 - the Phoxocephalidae. Analyses revealed 49 putative …
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Antarctic phytoplankton and climate change using Holocene sedimentary DNA, fossils and chemical proxies.
… zooplankton, viruses and microbes, and coupling to climate. (iv) Compare northern (Maxwell Bay) and southern (Börgen Bay) responses to distinguish between regional and local expressions of climate forcing. Chapter 3 develops a new age model and multiproxy record for Maxwell Bay, …
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Dispersal and remineralisation of biodeposits: Ecosystem impacts of mussel aquaculture
… that might otherwise not be deposited. The benthic remineralisation of biodeposits increases sediment oxygen demand and nutrient regeneration, thus enhancing the benthic-pelagic coupling of nearshore ecosystems. In New Zealand the mussel Perna canaliculus has a high natural abundance and is …
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Characterization of novel pathways in the phosphorus cycle of lakes
… through the mineralization, translocation (i.e., benthic pelagic coupling) and excretion of nutrients. Rates of P excreted are expected to vary across taxa (i.e., zooplankton vs. mussels vs. benthic macroinvertebrates vs. fish), yet the significance of any one group of taxa in supplying P to …
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Influence of increased sediment exposure on suspension-feeder assemblages in a temperate seagrass meadow
… between the water column and the seabed (i.e. benthic-pelagic coupling), increased sediment exposure generated by anthropogenic activities may negatively impact these organisms. This study set out to evaluate the influence of increased sediment exposure on suspension-feeder assemblages in a …