Browsing by Series "ERI report"

Now showing items 21-40 of 73

  • A coupled hydrodynamic-ecological model to test management options for restoration of lakes Onoke and Wairarapa

    Allan, Mathew Grant; Hamilton, David P.; Muraoka, Kohji (Environmental Research Institute, Faculty of Science and Engineering, The University of Waikato, 2018)
    This report describes a modelling and remote sensing study of lakes Onoke and Wairarapa that seeks to determine water quality and ecological effects of specific management scenarios, and therefore inform the Ruamāhanga ...
  • Development and validation of hydrolysis assays for seven species of exotic fish

    Banks, Jonathan C.; Hogg, Ian D. (Environmental Research Institute, The University of Waikato., 2014)
    Determining the distribution and presence of exotic taxa are significant challenges for eradication efforts and for restoration ecology. One method is detect the presence of introduced species that has shown promise is the ...
  • Distribution of silty sediments in the shallow subsurface of the shipping channels of Tauranga Harbour

    de Lange, Willem P.; Moon, Vicki G.; Fox, Beth R.S. (Environmental Research Institute, Faculty of Science and Engineering, The University of Waikato, 2014-12-10)
    Capital dredging in 1992 encountered some areas of siltier sediments that resulted in the formation of a highly visible plume. Subsequently multibeam and diver observations indicated that there are further areas of sediments ...
  • Does artificial intelligence modelling have anything to offer traditional management of freshwater food resources?

    Death, Russell G.; Collier, Kevin J.; Hudson, Maui; Canning, Adam; Niessen, Miriam; David, Bruno O.; Catlin, Alicia; Hamer, Mark; Pingram, Mochael (Environmental Research Institute, University of Waikato, 2017)
    Management of freshwater systems and the ecosystem services they provide has become a multi-stakeholder activity. This requires information on resources and how to manage them to be disseminated to a wide range of users. ...
  • Ecological effects of artificial mixing in Lake Rotoehu

    McBride, Chris G.; Tempero, Grant Wayne; Hamilton, David P.; Cutting, Cutting T.; Muraoka, Kohji; Duggan, Cutting; Gibbs, Max M. (Environmental Research Institute, Faculty of Science and Engineering, The University of Waikato, 2015)
    Lake Rotoehu is a eutrophic, moderately large (795 ha), shallow (mean depth 8.2 m), polymictic lake in the Rotorua/Te Arawa lake district. Land use intensification, water level changes, and nutrient-rich geothermal inflows ...
  • Ecological modelling of water quality management options in Lake Waahi to support Hauanga Kai species: Technical Report

    Allan, Mathew Grant (Environmental Research Institute, The University of Waikato, 2018)
    This report describes a numerical modelling approach for Lake Waahi to assess the effects of various future scenarios on water quality attributes known to affect the appearance of the lake’s multiple hauanga kai species ...
  • Ecological monitoring of artificial destratification effects in Lake Rotoehu: 2014-2015

    Tempero, Grant Wayne (Environmental Research Institute, Faculty of Science and Engineering, The University of Waikato, 2015)
    Lake Rotoehu is a shallow (mean depth 8 m), polymictic eutrophic lake in the Rotorua lakes district. Catchment land use intensification has contributed to a decline in water quality and persistent cyanobacterial algal ...
  • Ecological study of Barrett Domain, New Plymouth

    Efford, Jackson Tai; Bylsma, Rebecca Johanna (Environmental Research Institute, The University of Waikato, 2012)
    An ecological survey of Barrett Domain (New Plymouth) was conducted by the Environmental Research Institute, University of Waikato, for the New Plymouth District Council. The main ecological features of the domain were ...
  • Ecological study of Hickford Park and coastal walkway route options

    Bylsma, Rebecca Johanna; Efford, Jackson Tai (Environmental Research Institute, The University of Waikato, 2012)
    An ecological study of Hickford Park, (New Plymouth) was conducted by the Environmental Research Institute, University of Waikato, for the New Plymouth District Council. The main ecological features of the park were mapped ...
  • Ecotoxicological review of alum applications to the Rotorua Lakes

    Tempero, Grant Wayne (Environmental Research Institute, Faculty of Science and Engineering, The University of Waikato, 2015)
    The use of alum (aluminium sulphate) has become a recognised technique for the restoration of freshwater systems. When added to water, alum dissociates and dissolved aluminium undergoes a series of hydrolysis reactions ...
  • Ecotoxicological Review of Alum Applications to the Rotorua Lakes: Supplementary Report

    Tempero, Grant Wayne (Environmental Research Institute, Faculty of Science and Engineering, The University of Waikato, 2018)
    This report is intended to supplement the original 2015 report “Ecotoxicological Review of Alum Applications to the Rotorua Lakes” published as Environmental Institute Report Number 52 by the University of Waikato. A number ...
  • Environmental cues for koi carp (Cyprinus carpio) spawning aggregations and bottleneck locations near Huntly, New Zealand

    Garrett-Walker, Jeremy (Environmental Research Institute, Faculty of Science and Engineering, The University of Waikato, 2015)
    Koi carp (Cyprinus carpio) were monitored from August to December 2014 near Huntly, in the north Waikato, to document migratory and spawning behaviour. Monitoring involved a combination of daily water level and temperature ...
  • Environmental effects of the Manganui ski field, Mt Taranaki/Egmont

    Efford, Jackson Tai; Bylsma, Rebecca Johanna; Clarkson, Bruce D. (Environmental Research Institute, The University of Waikato, 2012)
    During May 2012, the environmental effects of the Manganui ski field were examined. Permanent quadrats first established in 1974 to monitor vegetation changes were re-measured, vegetation mapping was conducted, modifications ...
  • Evaluation of the Hamilton City Council plants for Gullies programme

    Clarkson, Bruce D.; Clarkson, Fiona Marie; Bryan, Catherine Louise (Environmental Research Institute, The University of Waikato, 2012)
    This evaluation found that the Hamilton City Council Plants for Gullies programme is successfully facilitating the restoration and enhancement of Hamilton City gullies by private gully owners. The mean number of native ...
  • Evaluation of vegetation and stream health within sites supported by the Hamilton City Council Plants for Gullies Programme

    Bylsma, Rebecca Johanna; Efford, Jackson Tai; Kirby, Catherine Louise (Environmental Research Institute, The University of Waikato, 2013)
    Between August 2012 and March 2013, the Environmental Research Institute, University of Waikato, conducted a survey of randomly selected Hamilton gully sites which had received plants from the Hamilton City Council’s Plants ...
  • Facilitating rafting on the Kaituna River: The effect of manipulating Lake Rotoiti outflow on the function of the Ohau diversion wall

    Jones, Hannah Frances Emily; Hamilton, David P.; Muraoka, Kohji (Environmental Research Institute, Faculty of Science and Engineering, The University of Waikato, 2013)
    The University of Waikato was requested by Bay of Plenty Regional Council to quantify the effectiveness of the Ohau diversion wall when controlling the Kaituna River outflow during high and low flows. The Ohau diversion ...
  • Feasibility of water quality monitoring by remote sensing in the Waikato Region

    Lehmann, Moritz K.; Schallenberg, Lena A.; Allan, Mathew Grant (Environmental Research Institute, The University of Waikato, 2017)
    The Waikato Regional Council (WRC) has statutory environmental monitoring requirements, including commitments arising from the National Policy Statement for Freshwater Management and State of the Environment reporting. ...
  • Final report: inflow monitoring of the Rotopiko lakes and Lake Mangakaware

    Tempero, Grant Wayne; Hamilton, David P. (Environmental Research Institute, Faculty of Science and Engineering, The University of Waikato, 2014)
    Farm drains flowing into the Rotopiko (Serpentine) North, Rotopiko South and Lake Mangakaware were monitored from April 2012 to April 2014. These drains included two tributaries to Rotopiko North (designated Rotopiko North ...
  • Fish biomass and gonad development in the Rotopiko (Serpentine) lakes

    Wu, Nicholas; Daniel, Adam Joshua; Tempero, Grant Wayne (University of Waikato, 2013)
    The Rotopiko (Serpentine) lake complex is one of the Waikato region’s few peat lake systems that contains primarily native aquatic plants. Retaining the natural state of the lakes has been considered a high priority by the ...
  • Fish population and biomass estimates from mark-recapture for Lake Milicich, a shallow Waikato peat lake

    Hicks, Brendan J.; Tempero, Grant Wayne; Powrie, Warrick (Environmental Research Institute, Faculty of Science and Engineering, The University of Waikato, 2017)