Secretariat
The Wentworth Group relies on a small secretariat to support the Group’s activities.
The Wentworth Group has been supported in its work by a number of scientists, policy analysts, lawyers, and other professionals. See our contributors list.
Dr. Celine Steinfeld
Chief Executive Officer

Dr Celine Steinfeld is a geographer specialising in natural resource policy and management in Australia. She was awarded the University Medal in 2008 for research on floodplain development in the internationally significant Macquarie Marshes in the Murray-Darling Basin. After graduating, Celine worked in policy implementation at the Murray-Darling Basin Authority. She was the inaugural recipient of the Peter Cullen Postgraduate Scholarship in 2009 and won the international River Management Young Achievers Award at the River symposium in 2012. She joined the Wentworth Group in 2015 with a passion for using scientific evidence to advance water reform and landscape conservation in a changing climate.
Michaelie Trenbath
Healthy Landscapes Project Lead

Michaelie is an environmental scientist and geographer. A driving force of her career and academics is to find improved ways for society to relate to nature to ensure long term prosperity for communities and the environment. A Bachelor of Environment and Sustainability and Bachelor of Arts at the Australian National University taught her an interdisciplinary, systems thinking approach to natural resource management. She is interested in the interface between science and policy, and elevating First Nations’ goals in conservation. She has interned with the Biodiversity Conservation Trust and volunteered in a range of environment related groups including at Taronga Zoo in Sydney.
Dr Fateme Zare
Water Policy Analyst

Fateme brings expertise in complex systems and water resources management, specialising in the interactions between people and nature and in designing approaches that support sustainable water reform. She completed her PhD at the Australian National University’s Fenner School of Environment and Society, where her research focused on improving integrated modelling and assessment practices in the water sector. Fateme has worked across academic, consulting, and policy settings, and is passionate about building bridges between science, policy, and communities to address the challenges of water scarcity and reform.
Lucy Broad
Strategic Communications Consultant

Lucy has joined the Wentworth Group as an independent strategic communications consultant. She has more than forty years of experience in strategic communications, media relations, stakeholder engagement and extension and behaviour change across rural and regional Australia including in the area of environment and sustainability.
Her career commenced as a rural reporter with ABC Radio, and over the following 23 years roles included reporting, producing and presenting a range of ABC radio and television programs, National Editor for ABC Rural, State Director for the ABC in Queensland and Network Scheduler across ABC’s Radio networks.
Lucy also has extensive senior management and leadership experience outside the ABC, as Managing Director of the full-service public relations business Cox Inall Communications (now part of Dentsu Creative), General Manager Communication and Extension with the Grains Research and Development Corporation (GRDC) and General Manager Communications with Meat & Livestock Australia (MLA).
In her most recent role as part of MLA’s executive leadership team, Lucy oversaw all strategic communications including reputation and crisis management, media relations, stakeholder engagement, events, MLA membership and producer communications, and the sheep and cattle sector’s Sustainability Frameworks.
Siobhan Isherwood
Healthy Landscapes Data Analyst

Siobhan has a background in large-scale renewable energy development, renewable energy advocacy, environmental assessment, bush regeneration, and waste management and resource recovery. She is a passionate environmental scientist and experienced project manager. Siobhan has an environmental science degree (first class honours) from Monash University and has completed a Masters in conservation biology at Macquarie University. Her academic experience includes ecology, policy development, ecological economics, remote sensing and GIS, and climate change.
Isobel Bender
Healthy Landscapes Policy Analyst

Isobel Bender is an environmental policy analyst and practitioner with a background spanning ecological restoration, community engagement, and Indigenous-led conservation. She joins the Wentworth Group following her role as Environmental Manager at 18fifty3, where she co-founded and led a First Nations Bush Crew and co-designed a government-backed conservation First Nations trainee program. Isobel holds a First-Class Honours in Environmental Studies from the Australian National University, with published research on water policy, and research interests spanning ecological transformation, futures thinking and role of NGOs in conservation. Her career has focused on bridging policy, science, and practice – from supporting farmers to engage with carbon markets, to designing large-scale river and landscape restoration projects. She is passionate about shaping evidence-based policy that regenerates landscapes and strengthens community leadership in conservation.
David Miller
Water Policy Analyst

David’s expertise is in water policy and water sharing plans in NSW. He has twenty years experience in NSW NRM agencies, specialising in water sharing plans. He has worked in every river in NSW and each of the main groundwater systems. He has extensive knowledge of water allocation including legislative and policy requirements, extraction limits and water licensing. He is currently working for the Wentworth Group as a consultant.
