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Tierra Resources



Sarah K. Mack, MSPH, PhD, CFM

President and CEO of Tierra Resources

Sarah K. Mack, PhD, is President and CEO of Tierra Resources and is an acknowledged leader in the movement to monetize wetland carbon offsets. In her work, Dr. Mack focuses on innovative approaches to address the global challenges of climate mitigation, urbanization, and pollution through wetland and water management. Dr. Mack led the development and was the lead author of the American Carbon Registry Methodology, Restoration of Degraded Deltaic Wetlands of the Mississippi Delta, the first certified methodology for creating and monetizing carbon offset credits from wetland restoration activities. Dr. Mack leads the implementation of the first wetland carbon pilot projects in the nation that include a freshwater cypress pilot project in partnership with Entergy Corporation, and a mangrove pilot project in partnership with ConocoPhillips. Dr. Mack directs overall activities and works alongside state, municipal, and private partners to generate marketable eco-assets.

Previously Dr. Mack was the Technical Administrator of the Sewerage and Water Board of New Orleans (S&WB) where she also served during Hurricane Katrina as the Emergency Liaison between the S&WB and other agencies responsible for the initial response and later recovery of sewer, water, and drainage infrastructure.

She received her PhD in Global Sustainable Resource Management from Tulane University and is an ASFPM Certified Floodplain Manager.

John W. Day, PhD

Senior Wetland Ecology Advisor

John W. Day, PhD, is Distinguished Professor Emeritus in the Department of Oceanography and Coastal Sciences, School of the Coast & Environment at Louisiana State University, where he has taught since 1971. Dr. Day has studied Louisiana coastal wetlands for over 35 years, worked with local governments and regulatory agencies regarding wetland restoration, and authored more than 200 articles and books in scientific literature. Dr. Day was a contributing author on the American Carbon Registry Methodology, Restoration of Degraded Deltaic Wetlands of the Mississippi Delta. Dr. Day has extensive experience in the ecology and management of coastal ecosystems in Louisiana and worldwide, with specialization in marsh and forested wetland ecology, wetland and coastal biogeochemistry, and river diversions. He is presently working on using wetlands as a means of removing nitrogen from the Mississippi River and for assimilation of municipal effluents. Dr. Day received his PhD in marine sciences and environmental sciences from the University of North Carolina in 1971.

Robert R. Lane, PhD

Senior Field Scientist

Robert R. Lane, PhD, is a wetland ecosystem scientist at Louisiana State University (LSU), School of the Coast & Environment. Dr. Lane was a contributing author on the American Carbon Registry Methodology, Restoration of Degraded Deltaic Wetlands of the Mississippi Delta, and specializes in wetland carbon monitoring and quantification. He has published numerous papers in peer-reviewed scientific journals concerning water quality and management of coastal and inland wetland systems. Dr. Lane has extensively studied the impacts of river diversions and municipal effluent application on wetland productivity, elevation, and surface and interstitial water chemistry, as well as the effectiveness of restoration techniques including sediment fences, hydrologic alterations, and municipal effluent application. Dr. Lane received his PhD in Oceanography & Coastal Science at LSU.

Robin Lewis

Senior Mangrove Advisor

Mr. Roy R. “Robin” Lewis III is president of Lewis Environmental Services, Inc., and Coastal Resources Group, Inc. Robin specializes in the ecological monitoring, management and restoration of mangrove forests and seagrass meadows and has over 125 professional publications in these and other wetland subject areas. He has forty years of experience in the design and construction of wetlands with over 200 completed and successful projects in the USA and overseas. Robin recently completed the design and permitting of a 1,025 acre mangrove restoration project at the Rookery Bay National Estuarine Research Reserve near Marco Island, Florida. Mr Lewis has worked and taught wetland restoration in twenty-two foreign countries including Guyana, Jamaica, Bonaire, Nigeria, India, Sri Lanka, Thailand, Indonesia and Vietnam. Robin is a Professional Wetland Scientist certified by the Society of Wetland Scientists, and a certified Senior Ecologist with the Ecological Society of America.

Dick Kempka

Senior Carbon Commercialization Advisor

Dick Kempka is the Vice President of Business Development for The Climate Trust, which provides innovation models for climate solutions, carbon asset management and carbon commercialization advisory services. A longtime specialist in eco-asset projects, Dick has over 20 years executive experience in innovative land conservation, carbon, wetlands, technology development, and sales. Dick formerly worked for Equator LLC, who specializes in the generation and management of high quality carbon credits and environmental assets derived from reforestation projects, forest conservation, sustainable land management and other emission reduction project activities. Dick‘s primary responsibility at Equator was sales and origination, deal negotiation, and product development. Before joining Equator, Dick was the Carbon Program lead for Ducks Unlimited (DU), the world’s largest wetlands conservation organization. The author of more than 20 professional publications, Dick received his Master’s in Geography and Remote Sensing from Indiana State University.

Mik Mckee

Mik joined The Climate Trust in January, 2015 as Senior Project Analyst, Forestry. Mik got his start in forestry working as a Forestry Technician for the US Forest Service on the Gallatin National Forest in Montana. After two years working on the Gallatin, he took a position with Chena Interagency Hotshots based in Fairbanks, Alaska. Having worked on the frontlines of many large wildfires throughout the west, Mik is acutely aware of the ecological implications of increasingly severe wildfires. This experience led Mik to the Sierra Institute for Community and Environment where he was part of a team seeking innovative ways to increase biomass utilization in the northern Sierra. The goal of this work was to create new demand for a traditionally low-value forest product and generate additional revenue to support forest restoration activities that reduce the risk of catastrophic wildfire and improve forest health. Mik’s perspective on forestry has been greatly influenced by these two distinct experiences and this is part of the forestry knowledge he brings to The Climate Trust. He is excited by the opportunity to demonstrate how carbon offset projects can lead to improved forest management and healthier forests in a finically viable manner. Mik has a Master of Forestry Degree from the Yale School of Forestry.

Christina LeBlanc

Marketing Associate

Christina LeBlanc is the Marketing Associate for Tierra Resources. In this role, Christina coordinates social media outreach, content creation, project management, project mapping, and landowner outreach. She is responsible for managing Tierra Resources’ GIS mapping capabilities and visually representing the impact of wetland restoration projects along the Gulf Coast, contributing to blue carbon projects. Prior to joining Tierra Resources, Christina worked at Global Green in Client Relations for the NOLA Wise Energy Efficiency pilot program to help renovate homes in New Orleans and reduce energy usage. In this role, Christina supported project design and development to create structures to successfully achieve goals set by the Better Buildings Program of the Department of Energy. Christina holds a B.A. in Diplomacy and World Affairs from Occidental College and an M.A. in Latin American Studies from Tulane University. She is currently pursuing her Ph.D. in History at Tulane University.