Aquatic and Marine Ecology


Our aquatic ecology team has specialist expertise in the following areas:

  • Freshwater ecosystems
  • Marine ecosystems
  • Wetland ecosystems
  • Water quality (marine, freshwater)
  • Sediment quality (marine, freshwater) 

Examples of these skills:

  • Interpretation of statutory requirements and scoping investigations
  • Ecological effects assessments and reporting
  • Habitat and offset modelling
  • Ecological monitoring 

  • Development and negotiation of resource consent conditions
  • Stakeholder consultation and collaboration
  • Presentation and defence of effects assessments via expert witness appearances at hearings

Examples of relevant experience:

  • Auckland Water Supply Dams, NZ: Assessment and resource consenting of water abstraction on aquatic ecosystems and fish habitat in ten water supply dams throughout the Hunua and Waitakere Ranges, Auckland.
    These projects involved:
    -  Evaluation of instream habitat requirements to support fisheries
    -  Assessments of impacts on water quality, invertebrates and fisheries
    -  Development and implementation of management plans covering native fish species (including ‘trap and transfer’ schemes), introduced fish species, fish passage provisions and riparian enhancement.
  • Tongariro hydropower scheme, NZ: Ecological investigations to support resource consent applications for the Tongariro scheme, ecological assessment of the effects of reduced flows, consent monitoring.
  • State Highway 20 Waterview Connection, NZ: Ecological management and monitoring for four major stream diversions as part of a $14 billion capital project, including fish effects assessment, fish rescue and relocation.
  • Army Bay Wastewater Treatment Plant, NZ: Marine ecological investigations for proposed new marine outfall.
  • Wellington Harbour Dredging, NZ: Marine ecological investigations, modelling, effects assessment for dredging and marine disposal of up to 7 million cubic metres of sediment from the entrance to Wellington Harbour.
  • New Zealand Defence Force: Various ecological assessment and monitoring projects, development of guidelines for risk management in relation to potential transfer of pest algae Didymosphenia geminata (“didymo”).
  • Coastal protection works, Kiribati: Ecological assessment and development of mitigation proposals for coastal protection works at ten sites on South Tarawa
  • South Paray Wharf, Vanuatu: Marine ecological assessment in relation to wharf expansion and capital dredging project.
  • Bujagali Hydropower Project, Uganda: Aquatic ecological assessment for a new 250 MW hydropower station on the White Nile, including effects on water quality, commercial and subsistence fisheries, biodiversity values including effects on threatened fish species, potential creation of habitat for disease (malaria, bilharzia) vectors.
  • Ribb River Irrigation Dam Project, Ethiopia: Assessment of impacts of changed river flows on habitat availability for 15 species of fish recorded only in the Lake Tana catchment, using IFIM/PHABSIM modelling.
  • Ruhudji Hydropower Scheme, Tanzania: Aquatic ecological assessment for 358 MW hydropower facility, including effects of habitat changes on endemic fish species. 
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