Global ETD Search
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Showing 1 to 17 of 17 for “"Tauranga Harbour"”.
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Investigating groundwater derived nutrient fluxes within Tauranga harbour, New Zealand
… to quantify SGD and related nutrient fluxes into Tauranga Harbour, a coastal lagoon system, on the largely volcanic North Island of New Zealand. A ²²⁶Ra mass balance quantified SGD fluxes at the harbour scale, resulting in a range of SGD flux rates between 0.53 cm d⁻¹ and 3.09 x10⁶ m³ d⁻¹. When …
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The physical and ecological impacts of mangrove expansion and mangrove removal: Tauranga Harbour, New Zealand
… of their expansion within three embayments of Tauranga Habour: Welcome Bay, Waikareao Estuary and Waikaraka Estuary. Removal of mangrove vegetation within Waikaraka Estuary provided an ideal site to assess the physical changes that occur in response to this activity. Detailed field measurements …
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The ecology of ray species in an urbanised estuary: Seasonality, habitat use and pollutant exposure in Tauranga Harbour
… Second, seasonality in habitat use within the Tauranga Harbour system was examined using monthly counts of the feeding excavations of Myliobatis tenuicaudatus. This study expanded previous estimations of seasonality and feeding habitat choice in estuaries. It determined that …
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Measuring and modelling estuarine macroalgae blooms and water column nutrients
… models as well as observation data from Tauranga Harbour (North Island, New Zealand). Based on long-term monitoring datasets of water column nutrients, temperature and irradiance, the Ulva tissue nitrogen concentration is modelled using an algebraic short-term equilibrium solution to a …
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Nutrient dynamics in shallow tidally-dominated estuaries
… are shallow tidally-dominated estuaries in Tauranga Harbour located on the Bay of Plenty Coast, New Zealand. Tauranga Harbour is the site of a large commercial port surrounded by urban development. The primary aim of this thesis was to determine the variations of dissolved inorganic nitrogen …
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Impact of black swan grazing and anthropogenic contaminants on New Zealand seagrass meadows
… 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 contaminants resulting from catchment development are postulated to contribute to …
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Dredge spoil dispersion from an inner shelf dump-mound
… shelf in 11-17 m water depth, 3 km offshore from Tauranga Harbour, New Zealand. Graphic and volumetric analysis of bathymetric changes over the dump-mound and its near vicinity, between 1978 and 1988, showed that based on echo-sounding surveys a high reduction in dump-mound volume occurs in the …
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Tīmata whakaora, kickstarting recovery - Using bivalves to bioremediate degraded estuarine sediments
… following disturbance. Two field experiments in Tauranga Harbour, Aotearoa New Zealand were conducted, first a controlled disturbance-recovery translocation trial (after acute disturbance) and second, a large-scale translocation across a gradient of environmental (chronic) stress. In the first …
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Transport and retention of benthic marine invertebrates in the Southern Tauranga Basin
… and retention of benthic invertebrate larvae in Tauranga Harbour, a large (218 km2), shallow (mean depth = 2.8 m) meso-tidal estuary. Previous studies indicate that residence times extracted from hydrodynamic modelling vary throughout the harbour, due to residual circulation patterns caused by …
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Ecological effects of turbidity variations in and around dredging areas in the Port of Tauranga
… barrier-enclosed shallow lagoon. The study area, Tauranga Harbour (New Zealand) is a system affected by multiple stressors such as urban developments, industry, forestry, agricultural land use and a port facility. The Port of Tauranga is the largest export port in New Zealand and carries out …
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New Zealand seagrass (Zostera muelleri) response to acute sedimentation: Linking non-structural carbohydrate reserves to resilience
… to catastrophic burial (acute) events in Tauranga Harbour, New Zealand. Non-structural carbohydrates (NSC) are synthesised and stored in seagrass tissues when photosynthetic outputs exceed metabolic demands and, in turn, are mobilised when photosynthesis is unable to meet metabolic …
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Population genetic structures and dispersal patterns of arthropods in New Zealand and the Ross Dependency, Antarctica
… (Cape Bird) and one continental site (Granite Harbour) is unlikely to be accounted for by the un-aided dispersal capacity of G. hodgsoni and recent human- or bird-mediated dispersal is highly probable. Furthermore, recent localised dispersal of Collembola was identified in two continental sites …
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Hypsometric and geometric controls on hydrodynamics, tidal asymmetry, and sediment connectivity in shallow estuarine systems
… explored for six shallow microtidal basins of Tauranga Harbour, New Zealand. Model results, obtained from a depth-averaged numerical model developed in Delft3D for the full estuarine system, indicated that tidal distortion increases with distance from basin entrance. A simple ratio between …
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Environmental aspects of storm runoff discharge from a timber port, Tauranga, New Zealand
… associated with the log operation at the Port of Tauranga Ltd. Based upon field data and rainfall records, about a half of the annual precipitation over the log handling areas is converted to surface runoff (117,000 m³a⁻¹). Annual runoff volume per hectare of wharf surface is estimated as 7,500 …
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Evaluation of New Zealand estuarine water properties using remote sensing
… Sentinel-2 imagery, in the case study estuary of Tauranga Harbour. The new methodology used direct measurement of bottom reflectance of intertidal areas while exposed, and used a regression estimator to derive subtidal bottom reflectance from particle size (developed using the intertidal …
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The impact of macrophyte mats on biodiversity and ecosystem functioning of benthic communities
… with an intertidal macrofaunal community in Tauranga Harbour were measured in a manipulative field experiment. Temporal changes and recovery of the community and the ecosystem functions they provide were measured twice over a 14-day period. Subtle treatment effects were observed in the …
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The biogeography and trophic roles of coastal marine sponges (Porifera) from the west coast of the North Island, New Zealand: Influences of catchments.
… (Dysidea tuapokere and Dysidea teawanui), from Tauranga Harbour, in the Bay of Plenty, and validated five species within New Zealand’s Exclusive Economic Zone, Dysidea cristagalli, D. hirciniformis, D. navicularis, D. ramsayi, D. spiculivora. Dysidea fragilis is now considered to be invalid, and …