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    • Issue #16 SIA for rural resilience and wellbeing >
      • SIA for rural resilience and wellbeing: Intro
      • The drivers and agents of on-farm change in Aotearoa New Zealand
      • Social-ecological assessment for remote and island communities
      • The Impact of Substandard Rural Housing on Resilience and Wellbeing in Te Tai Tokerau
      • Success factors for planning regeneration in rural areas
    • Issue #15 Economic methods and Impact Assessment >
      • Economic methods in impact assessment: an introduction
      • The Nature of Economic Analysis for Resource Management
      • The State-of-the-Art and Prospects: Economic Valuation of Ecosystem Services in Environmental Impact Assessment
      • Economic impact assessment and regional development: reflections on Queensland mining impacts
      • Fonterra’s policy on economic incentives for promoting sustainable farming practices
    • Issue #14 Impact assessment for infrastructure development >
      • Impact assessment for infrastructure development - an introduction
      • Place Matters: The importance of geographic assessment of areas of influence in understanding the social effects of large-scale transport investment in Wellington
      • Unplanned Consequences? New Zealand's experiment with urban (un)planning and infrastructure implications
      • Reflections on infrastructure, Town and Country planning and intimations of SIA in the late 1970s and early 1980s
      • SIA guidance for infrastructure and economic development projects
      • Scoping in impact assessments for infrastructure projects: Reflections on South African experiences
      • Impact Assessment for Pacific Island Infrastructure
    • Issue #13 Health impact assessment: practice issues >
      • Introduction to health impact assessment: practice issues
      • International Health Impact Assessment – a personal view
      • Use of Health Impact Assessment to develop climate change adaptation plans for health
      • An integrated approach to assessing health impacts
      • Assessing the health and social impacts of transport policies and projects
      • Whither HIA in New Zealand….or just wither?
    • Issue #12 Risk Assessment: Case Studies and Approaches >
      • Introduction
      • Risk Assessment and Impact Assessment : A perspective from Victoria, Australia
      • The New and Adaptive Paradigm Needed to Manage Rising Coastal Risks
      • Reflections on Using Risk Assessments in Understanding Climate Change Adaptation Needs in Te Taitokerau Northland
      • Values-Based Impact Assessment and Emergency Management
      • Certainty about Communicating Uncertainty: Assessment of Flood Loss and Damage
      • Improving Understanding of Rockfall Geohazard Risk in New Zealand
      • Normalised New Zealand Natural Disaster Insurance Losses: 1968-2019
      • Houston, We Have a Problem - Seamless Integration of Weather and Climate Forecast for Community Resilience
      • Innovating with Online Data to Understand Risk and Impact in a Data Poor Environment
    • Impact Connector #11 Climate Change Mitigation, Adaptation, and Impact Assessment: views from the Pacific >
      • Introduction
      • Climate change adaptation and mitigation, impact assessment, and decision-making: a Pacific perspective
      • Climate adaptation and impact assessment in the Pacific: overview of SPREP-sponsored presentations
      • Land and Sea: Integrated Assessment of the Temaiku Land and Urban Development Project in Kiribati
      • Strategic Environmental Assessment: Rising to the SDG Challenge
      • Coastal Engineering for Climate Change Resilience in Eastern Tongatapu, Tonga
      • Climate-induced Migration in the Pacific: The Role of New Zealand
    • Impact Connector #10 Climate Change Mitigation and Adaptation >
      • Introduction
      • Is a “just transition” possible for Māori?
      • Adapting to Climate Change on Scale: Addressing the Challenge and Understanding the Impacts of Asia Mega-Cities
      • How responding to climate change might affect health, for better or for worse
      • Kanuka, Kereru and carbon capture - Assessing the effects of a programme taking a fresh look at the hill and high country land resource
      • Wairoa: Community perceptions of increased afforestation
      • Te Kākahu Kahukura Ecological Restoration project: A story within a story
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Issues for EcIA
​in the marine environment in New Zealand

Sharon De Luca, Associate Partner / Marine Ecologist, Boffa Miskell Ltd

Assessments of ecological effects on the marine environment in New Zealand can be challenging due to a number of factors:

  • an overlapping and convoluted legislative framework,
  • the complex nature of marine habitats,
  • a lack of data,
  • the spatial scales and interconnectedness of marine areas; and
  • a lack of guidelines for impact assessment.

In this article, I will outline the ways in which some of these factors affect the reliability of descriptions and impact assessments, and consider how these might influence the quality of resource management in the marine area.

Legislative framework

The marine environment in New Zealand is divided into complex and overlapping zones, including inland waters (marine waters landward of low water), the territorial sea (extending from low water to 12 nautical miles (NM)), the contiguous zone (12 NM-24NM), the Exclusive Economic Zone (EEZ) (12 NM to 200NM), and the continental shelf (12-350NM).  In addition, the Resource Management Act (1991) (RMA) uses different definitions for marine areas, with the Coastal Marine Area (CMA) extending from mean high water springs (MHWS) to the boundary of the territorial sea boundary (12 nautical miles (NM)) including the foreshore, seabed, coastal water and the air space above the water. 

Marine management and assessment of effects for marine ecology in New Zealand therefore sits within a framework of overlapping legislation and management structures. This complexity can result in piece-meal, fragmented or siloed assessment of effects, and  makes assessment of cumulative effects difficult. 

Resource management of the marine environment in New Zealand is governed primarily by the two acts: Resource Management Act (RMA) 1991, and the Exclusive Economic Zone and Continental Shelf (Environmental Effects) Act (EEZ Act) 2012.  The RMA applies to the CMA, and the EEZ Act applies to the EEZ and the extended continental shelf.  Within Auckland, the Hauraki Gulf Marine Park Act (HGMPA) 2000 also applies to the CMA within the Hauraki Gulf; and in Fiordland, the Fiordland (Te Moana o Atawhenua) Marine Management Act 2005 applies. Both these regional statutes overlap with the RMA. 

In addition to the direct provisions of the RMA, the New Zealand Coastal Policy Statement 2010 provides policy directives on the management and protection of a wide range of sometimes-conflicting activities in the marine environment.  Other pieces of legislation also regulate the marine environment in regard to fisheries, cultural interests, mining, marine pollution, biosecurity, protection of marine mammals and marine organisms, marine reserves, heritage and coastal reserves.  There are many overlaps between the various legislation. For example, a recent Environment Court decision [1] upheld that regional councils can impose planning controls over fishing in order to maintain biodiversity thus constituting an overlap between the RMA and the Fisheries Act 1996.

There are similarities between the RMA and the EEZ Act although the EEZ Act has a much narrower focus. One of the key distinctions is the definition of ‘environment’. The EEZ Act includes only the natural environment and resources; whereas the RMA definition includes physical resources, social, economic, cultural, communities and aesthetic and amenity values as part of the wider ‘environment’. Further, the EEZ Act does not include the concept of sustainable management but does have a strong directive relating to exercising caution to protect the marine environment.  Marine ecologists working across both Acts need to be aware of the significant differences between these two pieces of legislation, especially with respect to the EEZ Act decision-making criteria.
​
Ecosystem-based marine spatial planning can inform the assessment of proposals through defining marine spaces and the appropriate management for each space.  New Zealand’s first marine spatial plan was completed in December 2016 and covers the Hauraki Gulf. The plan (Sea Change Tai Timu Tai Pari) empowers consideration of all issues that impact on the marine environment, holistically, through a collaborative process. The approach taken in the Hauraki Gulf could be applied to other marine areas in New Zealand to facilitate better management of marine resources and more thorough and comprehensive EcIAs.

Ecological Impact Assessment in the marine environment

New Zealand’s marine environment contains a high diversity of habitats.  We have high levels of endemism and highly migratory species which make marine management and EcIAs more complex. Environmental and ecological information in the marine environment is a long way behind our understanding of the terrestrial environment.  Thousands of marine species remain undescribed in New Zealand and worldwide, and thousands more are yet undiscovered (especially invertebrates and deep-sea organisms).  This lack of information limits our understanding of what marine species are Threatened or At Risk. The threat classification assessment for marine invertebrates undertaken in 2013 covers only 5% of the marine invertebrates present in New Zealand (Freeman et al., 2014) [2]. Additionally, there is still much to learn about processes and relationships between marine organisms, and between organisms and their habitats. The limited knowledge and understanding of marine ecosystems limits the certainty with which effects can be predicted and the outcomes of proposed impact management.

Due to a lack of basic ecological information in many marine areas, identification of significant ecological areas within marine environments is often based on those features/species that are readily visible or provide habitat for other organisms (for example, saline vegetation and the presence of birds) rather than on the marine organisms and marine habitats themselves.  In addition, marine ecological data is often not compiled and connected, rather being held in diffuse sources, which reduces the likelihood of significant improvement in understanding uses of marine resources and assessment of predicted activity outcomes versus actual outcomes.

Projects that involve assessments of effects on marine ecological values under the RMA and EEZ are highly varied in nature and in scale, and include activities such as reclamation, permanent occupation, discharges, disturbance, vegetation removal, deposition, dredging, and dumping.

Activities on land can also indirectly affect marine ecological values. For example. earthworks for residential developments and infrastructure are typical activities that can have an indirect effect on marine ecological values through the discharge of sediment-laden water into waterways and ultimately the sea. Earthworks occur at a catchment-level scale, which makes it difficult to isolate specific project effects from catchment effects in EcIAs. The ecologist working in a project team usually relies on the outputs from sediment run-off models prepared by other team members (for example, hydrologists or engineers). Sediment run-off from open earthworks can be problematic to assess as there is no certainty as to whether these effects will occur. They are primarily dependent on the size of rainfall events, and these events cannot accurately be predicted during the assessment of effects stage of a project. This uncertainty makes it difficult to assess effects and to strike a sensible balance between being overly precautionary or overly permissive.

With any project that potentially impacts on land or marine environments, it is important to involve ecologists early in the design stage of a project, in order to understand the risks as well as opportunities to minimise and mitigate or offset potential adverse effects.  In the marine environment, this is particularly important if reclamation is likely to be part of the project. The NZCPS states that reclamation should be avoided unless there is no other option, and this can impose a significant risk to the consentability of a project. 

As marine environments are large and interconnected, there can be a tendency for some practitioners to minimise (not necessarily intentionally) the level of effects of a project by considering it at a broad scale. For example, an area of reclamation in an embayment within a harbour could be considered at the harbour scale (very small proportion of the harbour affected, negligible level of effect), at the sub-harbour scale (small proportion of sub-harbour affected, low level of effect), at the embayment scale (moderate/high proportion of the embayment affected, moderate/high level of effect). To avoid this potential down-playing of the effects, it is important that ecologists assess the project at several spatial and temporal scales.

A further complication for marine impact assessments in New Zealand is that there is no published guidance on how to assess ecological value, nor how to carry out impact assessments in marine environments. This leads to variation in the way ecological values are assigned, and the seriousness of impacts assessed by different ecologists in different places. Two ecologists may arrive at different conclusions about a project because they have used a different methodology. This can make it very difficult for a decision-maker to make a balanced judgement between the two.

 In 2015, the Ecological Impact Assessment Guidelines for New Zealand were published by the Environment Institute of Australia and New Zealand, and subsequently revised in 2018 [3]. These guidelines provide a robust, transparent framework for EcIAs, but cover only terrestrial and freshwater ecosystems; although for practical purposes, the ecological principles and assessment framework used there are equally applicable to the marine environment. The key difference lies in the requirements of relevant legislation. Other ecological guidance documents are also silent on the marine environment e.g. draft Local Government Biodiversity Offsetting Guidelines. 

Conclusions

Consistent, high quality resource management in the marine environment around New Zealand is primarily restricted by the lack of data and knowledge about the marine ecosystem, and inconsistent approaches to assessment. Although scientific investigation continues to fill  knowledge gaps, dispersed and disconnected information and sets of data  make it difficult to make gains  in marine resource management. 

Revision of the EIANZ Guidelines to include marine ecology will assist with consistency in the structure of impact assessments, especially around determination of ecological effects. This greater consistency will bring the guidelines into closer alignment with those produced for the UK and Ireland [4]. I have volunteered to be part of a group of marine ecologists who will (pro bono) expand the EIANZ Ecological Impact Assessment Guidelines to include marine ecology and have already started on this work. 

​Please contact me at [email protected] if you are interested in being involved in reviewing the guidelines. 
Download Article as PDF

REFERENCES 
​
​[1] Trustees of the Motiti Rohe Moana Trust V Bay of Plenty Regional Council [2018] NZENV 67

​
[2] Debbie Freeman, Kareen Schnabel, Bruce Marshall, Dennis Gordon, Stephen Wing, Di Tracey and Rod Hitchmough, 2014.  Conservation status of New Zealand marine invertebrates, 2013. Department of Conservation, Wellington.

[3] Ecological impact Assessment (EcIA). EIANZ Guidelines for use in New Zealand terrestrial and freshwater ecosystems. 2nd Ed EIANZ. May 2018

​
[4] Guidelines for Ecological Impact Assessment in the UK and Ireland. September 2018. CIEEM.
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    • Issue #16 SIA for rural resilience and wellbeing >
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      • The drivers and agents of on-farm change in Aotearoa New Zealand
      • Social-ecological assessment for remote and island communities
      • The Impact of Substandard Rural Housing on Resilience and Wellbeing in Te Tai Tokerau
      • Success factors for planning regeneration in rural areas
    • Issue #15 Economic methods and Impact Assessment >
      • Economic methods in impact assessment: an introduction
      • The Nature of Economic Analysis for Resource Management
      • The State-of-the-Art and Prospects: Economic Valuation of Ecosystem Services in Environmental Impact Assessment
      • Economic impact assessment and regional development: reflections on Queensland mining impacts
      • Fonterra’s policy on economic incentives for promoting sustainable farming practices
    • Issue #14 Impact assessment for infrastructure development >
      • Impact assessment for infrastructure development - an introduction
      • Place Matters: The importance of geographic assessment of areas of influence in understanding the social effects of large-scale transport investment in Wellington
      • Unplanned Consequences? New Zealand's experiment with urban (un)planning and infrastructure implications
      • Reflections on infrastructure, Town and Country planning and intimations of SIA in the late 1970s and early 1980s
      • SIA guidance for infrastructure and economic development projects
      • Scoping in impact assessments for infrastructure projects: Reflections on South African experiences
      • Impact Assessment for Pacific Island Infrastructure
    • Issue #13 Health impact assessment: practice issues >
      • Introduction to health impact assessment: practice issues
      • International Health Impact Assessment – a personal view
      • Use of Health Impact Assessment to develop climate change adaptation plans for health
      • An integrated approach to assessing health impacts
      • Assessing the health and social impacts of transport policies and projects
      • Whither HIA in New Zealand….or just wither?
    • Issue #12 Risk Assessment: Case Studies and Approaches >
      • Introduction
      • Risk Assessment and Impact Assessment : A perspective from Victoria, Australia
      • The New and Adaptive Paradigm Needed to Manage Rising Coastal Risks
      • Reflections on Using Risk Assessments in Understanding Climate Change Adaptation Needs in Te Taitokerau Northland
      • Values-Based Impact Assessment and Emergency Management
      • Certainty about Communicating Uncertainty: Assessment of Flood Loss and Damage
      • Improving Understanding of Rockfall Geohazard Risk in New Zealand
      • Normalised New Zealand Natural Disaster Insurance Losses: 1968-2019
      • Houston, We Have a Problem - Seamless Integration of Weather and Climate Forecast for Community Resilience
      • Innovating with Online Data to Understand Risk and Impact in a Data Poor Environment
    • Impact Connector #11 Climate Change Mitigation, Adaptation, and Impact Assessment: views from the Pacific >
      • Introduction
      • Climate change adaptation and mitigation, impact assessment, and decision-making: a Pacific perspective
      • Climate adaptation and impact assessment in the Pacific: overview of SPREP-sponsored presentations
      • Land and Sea: Integrated Assessment of the Temaiku Land and Urban Development Project in Kiribati
      • Strategic Environmental Assessment: Rising to the SDG Challenge
      • Coastal Engineering for Climate Change Resilience in Eastern Tongatapu, Tonga
      • Climate-induced Migration in the Pacific: The Role of New Zealand
    • Impact Connector #10 Climate Change Mitigation and Adaptation >
      • Introduction
      • Is a “just transition” possible for Māori?
      • Adapting to Climate Change on Scale: Addressing the Challenge and Understanding the Impacts of Asia Mega-Cities
      • How responding to climate change might affect health, for better or for worse
      • Kanuka, Kereru and carbon capture - Assessing the effects of a programme taking a fresh look at the hill and high country land resource
      • Wairoa: Community perceptions of increased afforestation
      • Te Kākahu Kahukura Ecological Restoration project: A story within a story
    • Issue #9 Impacts of Covid-19 >
      • Introduction to Impact Connector Issue 9 – Impact assessment and Covid 19
      • Covid-19 fast-track consenting: climate change legacy key to success
      • Tourism – the long haul ahead
      • Making sense of the impact of Covid-19: planning, politics, and the public good
    • Issue #8 Social Impact Assessment >
      • Challenges for Social Impact Assessment in New Zealand: looking backwards and looking forwards
      • Insights from the eighties: early Social Impact Assessment reports on rural community dynamics
      • Impact Assessment and the Capitals Framework: A Systems-based Approach to Understanding and Evaluating Wellbeing
      • Building resilience in Rural Communities – a focus on mobile population groups
      • Assessing the Impacts of a New Cycle Trail: A Fieldnote
      • The challenges of a new biodiversity strategy for social impact assessment (SIA)
      • “Say goodbye to traffic”? The role of SIA in establishing whether ‘air taxis’ are the logical next step in the evolution of transportation
    • Issue #7 Ecological Impact Assessment >
      • The future of Ecological Impact Assessment in New Zealand
      • Ecological impact assessment and roading projects
      • EcIA and the Resource Management Act
      • Professional Practice and implementation of EcIA
      • EcIA in the Marine Environment
    • Issue #6 Landscape Assessment >
      • Introduction
      • Lives and landscapes: who cares, what about, and does it matter?
      • Regional Landscape Inconsistency
      • Landscape management in the new world order
      • Landscape assessment and the Environment Court
      • Natural character assessments and provisions in a coastal environment
      • The Assessment and Management of Amenity
      • The rise of the THIMBY
      • Landscape - Is there a common understanding of the Common?
    • Issue #5 Cultural Impact Assessment >
      • Introduction
      • Potential of Cultural Impact Assessment
      • The Mitigation Dilemma
      • CIA and decision-making
      • Insights and observations on CIA
      • Achieving sustainability through CIA
      • CIA - Enhancing or diminishing mauri?
      • Strategic Indigenous Impact Assessment?
    • Issue #4 Marine Environment >
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      • Iwi, Impact Assessment and Marine Environment
      • Sea-Bed Mining Application in Taranaki
      • The wreck of the MV Rena
      • High Court RMA Controls on Fishing
      • Initiatives in the Pacific Islands
      • SEA in an NZ context
    • Issue #3 Strategic Environmental Assessment
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