The Eastern Conservation Science team is a group of scientists and spatial analysts who work on regional-scale conservation issues. With over 100 years of combined conservation experience, the strategic work done by this science analysis and mapping team informs The Nature Conservancy’s priority planning and conservation actions across 22 states in the Eastern U.S. The team’s data products and reports are also used for natural resource planning by over 60 other conservation organizations as well as over 20 state and federal agencies.

L to R: (click on the name to jump to the staff description) Melissa Clark, Marta Ribera, Analie Barnett, Mark Anderson, John Prince, & Arlene Olivero

Conservation Science Team

Mark has a Ph.D. in Ecology from the University of New Hampshire and manages the Eastern Conservation Science team.  He has worked for The Nature Conservancy for over 20 years and has focused on leading regional-scale science assessments to support the conservation of terrestrial, freshwater and marine systems. His research includes climate resilience, ecosystem modeling, seafloor mapping, geophysical processes, and biodiversity conservation.  In 2017, Mark received the Conservancy’s Conservation Achievement Award. See an ECS interview of Mark here.

​Resilient and Connected Landscapes
Resilient Coastal Sites
Analie has a Master of Environmental Management with a focus on conservation science from Duke University. In her over ten years with The Nature Conservancy she worked on a variety of terrestrial, freshwater, and marine projects, where she developed spatial and statistical analyses to inform natural resource management and conservation planning. See an ECS interview of Analie here.


Melissa has a Master of Science in Resource Policy and Behavior from the University of Michigan. She has worked for The Nature Conservancy for over 10 years.  Her research interests include terrestrial resilience, landscape connectivity, conservation measures, science communications, and data access and distribution. See an ECS interview of Melissa here.


Arlene has a Master of Science in Biology from the University of Massachusetts. In her 19 years with The Nature Conservancy she has focused on large-scale assessments of freshwater systems and is the author of the Northeast Aquatic Habitat classification. Her research includes stream and lake habitat classification, floodplain modeling, freshwater resilience, and aquatic habitat condition assessments.  See an ECS interview of Arlene here.

Freshwater Classification
Terrestrial Resilience

John earned a Bachelor’s in Geography from Millersville University and has worked for The Nature Conservancy for over 30 years.  He compiles project data from various sources, helps maintain the team’s file structure, and helps to distribute data and reports internally and externally.  He also publishes Eastern Conservation Science products to various internet platforms from the Conservation Gateway to live web mapping applications.  See an ECS interview of John here.

Conservation Gateway
Secured Areas




Marta has a Ph.D. in Geography from Boston University and has worked for The Nature Conservancy since January 2016. Her work focuses on developing and implementing spatially-based conservation projects for marine and coastal systems across the United States. Her research interests include using remote sensing time series to inform ocean conservation, and translating complex datasets into new metrics and easy to understand visualizations. She is part of TNC’s North America Ocean and Coasts team. See an ECS interview of Marta here.