Staff & Partners

Ian Dutton Principal

Ian founded Nautilus Impact Investing to increase the effectiveness of social and environmental investments. Ian previously served in executive leadership roles with Rasmuson Foundation, the Alaska SeaLife Center, The Nature Conservancy and the University of Rhode Island. He has designed and led high impact natural resources management and social development programs throughout the United States, Australia and the Asia-Pacific region. Ian holds a PhD in geographical sciences from the University of Queensland and has authored more than 100 papers, chapters and articles.




Sarah Warnock Program Associate

Sarah came to NII in 2016 and has taken on the role of communications lead. Sarah began her career as a field biologist studying Alaska’s migratory birds, and holds a masters degree in ecology and a K-12 Science Education credential. Through her career Sarah has worked closely with multiple long-term partners in support of environmental and social justice issues in the areas of education, outreach, and communication. Sarah currently heads  Nautilus’ State of Alaska’s Salmon and People communication efforts.

Madeline Jovanovich Research Associate

Madeline joined NII in 2017 through her work on the State of Alaska’s Salmon and People project. As an alumnus and Research Technician at the University of Alaska Fairbanks College of Fisheries and Ocean Sciences, Madeline is able to apply her experiences in applied field research and commercial fisheries to her current work. Data coordination, continuity, and social involvement are key elements to her work with NII. Predominantly based in western and interior Alaska, Madeline’s passion for clean water systems and sustainable wild fisheries have kept her involved in fisheries management and research projects.

Arianna Cocallas Research Associate

Arianna joined NII as an independent contractor in  November 2017. Born and raised in Anchorage, Alaska, Arianna majored in environmental geology at Beloit College with time outside of class spent working in the college’s newly formed Sustainability Office. Summers were spent in interior Alaska as a research technician working on a permafrost warming experiment and researching carbon and nutrient export from boreal forests affected by increased fire regimes. With NII, Arianna will work on a variety of projects assisting with marketing, communication and data analysis.

Carissa Larson International Development Intern

Carissa is Alaskan Native (Alutiiq) from Kodiak, Alaska. Growing up, she spent her summers’ commercial salmon fishing with her family in Chignik, Alaska. An intern with NII during the summer of 2017, Carissa continues to assist with our SASAP project as time in her busy school schedule permits. Later this year Carissa will graduate from Hawai’i Pacific University, earning a BA in International Studies, with a concentration on sustainability and development. Carissa became interested in international development after traveling, and witnessing the levels of inequality throughout countries. She realizes the increasing need for social and environmental initiatives as climate change makes these issues especially complex.


Esau Sinnok (Inupiaq Eskimo) Communication Liaison / Intern

Esau’s home is Shishmaref, Alaska. He received his Certificate in Tribal Management from UAF and is working towards an Associates Degree in Alaska Native Studies, with a concentration in Alaska Native law, government, and politics. One of ten 2016 White House Champions of Change for Climate Equity Awardees, Esau is a former Arctic Youth Ambassador, 2016 Denny Wilcher award-winner for Young Environmental Activist, and 2017 Spirit of Youth Awardee. Esau’s passion is leading him towards politics and he plans to  to help his region and to build a sustainable future for Alaska.