THE Waiheke Collective

Te Korowai o Waiheke was initiated and developed by the Waiheke Community via the Waiheke Collective. The Te Korowai o Waiheke Board was established by the Waiheke Collective, and has representative governance structure.

Waiheke Collective Mission statement

We are a united network that works together to activate and amplify efforts, for a healthy and thriving Waiheke natural environment. 



Auckland Council


Department of Conservation


Hauraki Gulf Conservation Trust


Hauraki Gulf Islands Forest and Bird


Jo Ritchie (ecological consultant)


Ngati Paoa

Rat Busters logo.jpg

Waiheke Rat Busters

QEII covenant landowners


Waiheke Resources Trust


The Collective has an open membership and is keen to have as many of the island’s ecological restoration groups and individuals join.  Email

Te Korowai O Waiheke Trust

The Te Korowai o Waiheke Trust is responsible for governance – especially, financial and funder accountability. It is a diverse trust board with community representative trustees, mana whenua trustees, and trustees who are co-opted for skills. More than two thirds of the board are local residents, with a mix of both full time and part timers.

CHAIR - Grant Leach

Lover of both pets and wildlife, and meetings that don’t run overtime. Grant is CEO of Living Green Group, a leading manufacturer and marketer of natural eco friendly home and personal hygiene products. Previously, Grant led US owned Crossmark, NZ’s largest retail sales and merchandising agency, and also owned his own advertising agency for over 10 years. Grant is tertiary qualified in Marketing, Finance, Accounting and Commercial Law and is highly passionate about conservation of our ecological environment and the biodiversity that makes NZ so truly unique. He is currently the Chair of The Endangered Species Foundation of NZ. He spends much of his time at his property on Waiheke and is keen to add value to the waiheke community to ensure that it achieves its predator free outcomes and is a shining light to other similar initiatives around NZ.

Shane Brealey

Neighbourhood pest-control rallier and DIY enthusiast. Shane lives on Waiheke and tries not to spend too much time off the island. He is the Director of NZ Living, and has an engineering, project management, construction and development background in commercial, industrial, retail, healthcare and residential projects from $1million to $600million. After 15 years with Australian corporates Lend Lease, Mirvac and Multiplex Shane turned his attention to serving New Zealand interests.  Firstly, founding NZ Strong Construction to deliver $370m of important Auckland civic projects over 10 years including many transport, art, museum, school and community facility projects.  Secondly, founding NZ Living which is assisting solve Auckland’s housing crisis with high quality yet affordable homes. He is an experienced director and also an advisor to MBIE/CERA on various major development and construction projects.

Jonah Kitto-Verhoef

Youth supporter and experienced boots on the ground. Jonah is now the Operations Manager for The Halo Project, part of Predator Free Dunedin. He left his Waiheke home of more than five years and stepped down as the Chair of Hauraki Islands Forest & Bird, and left his job as Park Ranger – Whakanewha, Auckland Council.

A graduate of the University of Canterbury, Jonah completed a BSc with majors in Biological Sciences and Geography, receiving endorsements in Ecology and Environmental Science.  His professional career started as a Summer Ranger with the Christchurch City Council and has seen him working in the Hauraki Gulf as the conservation ranger at Auckland Councils Whakanewha and Motukorea Regional Parks for the past four years. During 2015 / 16 covering the role of Senior Ranger Conservation, Southern Parks, overseeing the conservation outcomes across 13 parks and a land area comprising over 20,000 ha and managing nine staff.  Jonah is a current steering group member of the Generate Network, a network aimed at providing opportunities and a collective voice to kick start the careers of young professionals in the parks and open spaces pathway.  Jonah brings a long history of voluntary work for a variety of organisations, and is an avid outdoor enthusiast with hobbies including mountaineering, rock climbing, tramping, bird watching and botany.

Ross Mahuika Rawiri

He hōnore ki te Atua

He maungārongo ki te whenua

He whakaaro pai ki ngā tāngata katoa

Ross Mahuika Rawiri, known as Mahu, is of Ngāti Paoa descent. He was raised in Whatapaka, Karaka, by his parents and grandparents who taught him firsthand how to be a kaitiaki of his ancestral lands and seas. Mahu graduated with a degree in Māori Studies in 2011, and a degree in Film and Media in 2006. He spent ten years working as a post-production coordinator for a New Zealand Maori film and television production company. In 2015, he opted for a career change that would enable him to put into practice his passion for kaitiakitanga. He joined the Auckland Council kaitiaki manawhenua ranger programme, through which he learnt additional skills at various Auckland southern regional parks. Bringing together his post-production management skills and his passion for kaitiakitanga, Mahu was the Ngāti Paoa Environmental Manager (Paoa Ranger) in 2017 and 2018 and continues to apply his cultural learnings, values and environmental experience to the role, on behalf of Ngāti Paoa and in the interests of achieving positive outcomes for current and future generations.

‘E ko au, e ko koe, hei whakatūtuki i ngā kaupapa kia whai oranga ai tātou katoa’

‘When you and I work towards our collective goals, we all prosper’


Karla Allies

Dog nanny and Environment Officer for Ngāti Paoa.

Brett Butland

Seasoned Hauraki Gulf Island volunteer. Brett is the Pest Free Auckland Programme Director at Auckland Council. Over a 32-year career, supported by technical knowledge, gained extensive operational and management experience in biosecurity, biodiversity and park management in regional and central government sectors. A natural collaborator with broad experience and knowledge of the Auckland environment, current biosecurity and conservation programmes and the challenges and opportunities it faces. A competent strategist with a proven track record of successful conservation action and outcomes. Previously employed by the Department of Conservation where, most recently as the Auckland Area Manager, directed the successful multi-species eradication on Rangitoto and Motutapu. In private capacity, Brett is the chair of the Motutapu Restoration Trust.

Ruth Macleod

Long-time Waihekian, and a fresh face to predator control. Ruth is Director Strategy Advisory Sales and Governance Services at NZTE and also leads the private sector international Beachheads advisory network. Strategy Advisory services provide support to businesses to get clear and aligned on their purpose, their strategy and the plan to make it happen. The Beachheads advisor network are private sector experts who offer perspective and insights to help our customers shape the direction of their business. Prior to returning to New Zealand after 11 years based overseas, Ruth held programme management roles at Telstra and Sensis in Melbourne and lived and worked in Munich before joining NZTE in New York in 2004. Ruth has a BA/BCom (Politics and Management) from Auckland University, is a member of the New Zealand Institute of Directors and now lives on Waiheke part-time after living there permanently for over 10 years.

Brent Impey

Avid tramper, bird spotter and sports fan, Brent has a BA, LLB, MinstD. He is Chair of New Zealand Rugby Union (and Chair of SANZAR) , and Finzsoft Solutions Limited; Director and chair of the Remuneration Committees of Yellow Pages Group and Devon Funds Management Limited; Director of Strategy at Ports of Auckland. 2014/2015 Consultant to MFAT on Pacific Content Initiative; Committee Member Institute of Directors Auckland Branch; Media consultant and professional mentor.

Previous board, consultancy and chief executive positions include:

  • Director Pumpkin Patch Limited, Market Pulse International Limited,

  • Chair Hutchwilco Limited / The Radio Bureau,Television Broadcasters Council , Advertising Standards Association and Fred Hollows Foundation;

  • Director of Freeview and Radio Broadcasters Association; 

  • Member of management board of CanWest Global (operators of television, radio and newspapers); 

  • Consultant to New Zealand Racing Board and the New Zealand Rugby Union; 

  • Media and business consultant .

  • From 1998-2009 CEO of MediaWorks NZ, and drive host on Radio Live (2010-2011).

  • Ran own media and sports consultancy business from 1992-1998 , 

  • CEO of Independent Broadcasting Group (1989-1992)

  • Partner at McElroy Milne Barristers & Solicitors (1984-1989), specializing in media law. Practised law in London.


Adventurer and supporter of fun and laughter. A Mum and lover of the great outdoors, Nicola lives on Waiheke and works in weed and predator control. 

A graduate of The University of Waikato, with a BSc in Biological Science and Honours in Health Science from Griffith University, Nicola spent many years sitting behind a computer analysing and reporting on statistical data. However, following the birth of her three children, she reconnected with childhood dreams and realised that outdoor, dirty, practical conservation work was the best fit for her. Nicola now works and volunteers in weed control, specialising in those most nasty of weeds such as mothplant, climbing asparagus and honeysuckle,  and rodent and stoat control. 

Deeply connected to Waiheke's youth population, with her children now aged 8, 10 and 12, Nicola is always on the lookout for outdoor, old school style adventures for children and has volunteered with a number of youth community groups on Waiheke.

Nicola hopes to engage and inspire Waihekes resident population to join us on the Predator Free Waiheke ride and to ensure the project is welcoming and enjoyable for all Waihekeans.


Mary Frankham, Project Director

Mary spent much time growing up in and around the shores and seas of Waiheke, watching ecology and succession in action via generations of regenerating bush. Mary left her role as and independent consultant and partnership broker for the North-West Wildlink Partnership Group to continue her journey with Predator Free Waiheke as a staff member rather than volunteer. Ex-trustee of Hauraki Gulf Conservation Trust, and co-owner of Kōwhai Media (New Zealand Geographic), she has worked as a community conservation facilitator and has held a number of leadership roles in community and voluntary organisations. Previously, she initated, grew and managed an event management business unit in a mulit-national publishing company. She holds a Bcom/BCApSc, and Cert. Horticulture.

Jo Ritchie, Operations Manager

Jo has spent 30 years working and sailing in the Hauraki Gulf. She learnt “rangering” in the field in the early days of the Tiritiri Matangi restoration project when she worked for the Department of Conservation. She was involved in pest eradications at Tawharanui Regional Park, Lake Rotokare, and Brook Sanctuary in Nelson.

Jo has also led or been the technical advisor on a number of island eradication projects including:

  • Rotoroa Island off Waiheke Island

  • Glenfern Sanctuary on Great Barrier Island

  • Rakitu Island off Great Barrier Island

  • Pakihi Island off Ponui island

  • Kaikoura Island in Fitzroy Harbour

The Hauraki Gulf islands are her second home. Overcoming the challenges to our natural environments and empowering communities to do this is her core motivation.

Jenny Holmes, Engagement Manager

Jenny has lived on Waiheke Island since 2002 and is passionate about sustainability. She has a background in marketing and innovation and has worked in several Waiheke Island organisations:

  • Waiheke Winegrowers Association Marketing Manager

  • Chairperson of the Waiheke Island Tourism Forum

  • co-founder of Waiheke Island Weddings, a wedding planning company

Jenny has two sons and has been involved in many Waiheke Island organisations with them. She has a strong understanding of the Waiheke Island community and is looking forward to working with the community on this exciting new initiative.