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 10 of 10 for “"Zostera muelleri"”.
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Sediment-effects on seagrass Zostera muelleri in New Zealand
… to determine sediment effects on the seagrass Zostera muelleri in terms of light attenuation and substrate physico-chemical alteration. Within this research framework, provision of assistance for successful seagrass restoration was also considered. The principal research question for this …
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Molecular and physiological investigation of trace metal stress in seagrass, Zostera muelleri
Despite the vast research on the negative effects of anthropogenic pollution on marine organisms, little is known about the toxicity responses of seagrasses to such perturbations. Understanding seagrass responses at the molecular level will ensure adequate conservation strategies to mitigate the …
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Molecular and cellular investigations of photosynthesis driven carbon fixation in the seagrass Zostera muelleri
Seagrasses are marine foundation species that have evolved to live in shallow coastal waters, an environment regularly subjected to changes through tidal patterns and anthropogenic activity. Global seagrass coverage is declining worldwide, mainly driven by decreasing water quality due to …
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New Zealand seagrass (Zostera muelleri) response to acute sedimentation: Linking non-structural carbohydrate reserves to resilience
… affects New Zealand’s only seagrass species, Zostera muelleri. This thesis, therefore explores how Z. muelleri responds to catastrophic burial (acute) events in Tauranga Harbour, New Zealand. Non-structural carbohydrates (NSC) are synthesised and stored in seagrass tissues when photosynthetic …
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Impact of black swan grazing and anthropogenic contaminants on New Zealand seagrass meadows
… of New Zealand are composed of only one species, Zostera muelleri. They are mainly present in sheltered, intertidal sand flats in harbours. Seagrass decline has been recorded in many New Zealand estuaries during the last century. Grazing by the black swan (Cygnus atratus) and anthropogenic …
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The effects of terrestrial sediment inputs on ecosystem functions in seagrass meadows and unvegetated sediments
… nutrient cycling in intertidal seagrass meadows (Zostera muelleri) and microphytobenthos-dominated unvegetated habitats. To investigate the effects of reduced seafloor light availability and prolonged submergence periods resulting from global heating induced sea-level rise, I conducted a two-year …
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Determining estuarine seagrass density measures from low altitude multispectral imagery flown by remotely piloted aircraft
… for assessing intertidal estuarine seagrass (Zostera muelleri) presence/absence and coverage density using multispectral imagery collected by a remotely piloted aircraft (RPA) flying at 30 m above the estuary surface (2.7 cm ground sampling distance). The research was conducted at Wharekawa …
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Remote sensing of dynamics and aboveground biomass of seagrass in Tauranga Harbor (Bay of Plenty), New Zealand
… The relatively small and patchy meadows of Zostera muelleri in this harbor can be mapped using a three-category classification (dense, sparse and none) with up to 91% accuracy for dense and 75% for sparse meadows using the machine learning algorithm Rotation Forest with Sentinel-2 imagery. …
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An assessment of Eddy Correlation technique in marine habitats
… and respiration in the temperate seagrass Zostera muelleri were examined using the non-invasive Eddy Correlation microelectrode system (ECE) and Chlorophyll a fluorescence using PAM under control-flow environment (Chapter 3). The results showed that the ECE has a potential to quantify O₂ …
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Ecological effects of turbidity variations in and around dredging areas in the Port of Tauranga
… requirements of New Zealand seagrass species, Zostera muelleri. The influence of suspended material in the water column and its effect on light quality can largely depend on its origins (i.e. marine sources, such as dredging or terrestrial material from surrounding catchments). Terrestrial …