Coastal Marine Ecologist
Marine
[email protected]
In The Nature Conservancy’s California Chapter, Walter provides the science needed by the Coastal Program to meet conservation objectives at the land-sea interface. His work at the Conservancy synthesizes our understanding of the ecological function—and benefits to humans—of coastal systems in order to improve the quantity and quality of these often imperiled habitats. Walter is currently leading a statewide assessment of the vulnerability of coastal habitats and conservation management lands to sea level rise to guide novel conservation approaches and policy reform. He also co-leads Desalination by Design to guide siting of desalination facilities to avoid sensitive marine and coastal areas. He has also worked to inventory and classify the estuaries of California, Oregon, and Washington and assess their nursery role for commercial and imperiled fishes.
Walter earned his Ph.D. from the University of California, Santa Cruz, Ecology and Evolutionary Biology Department and has over two decades of experience in marine, estuarine, freshwater and terrestrial ecology.
What Walter is working on now:
I am leading the completion of a statewide coastal conservation assessment titled: Conserving California’s Coastal Habitats: A legacy and a future with sea level rise. This spatially explicit assessment quantifies the vulnerability of coastal habitats to sea level rise, and maps and quantifies conservation strategies to maintain or enhance coastal habitat area into the future in the face of sea level rise.
S. L. Hamilton, V. R. Saccomanno, W. N. Heady, A. L. Gehman, S. I. Lonhart, R. Beas-Luna, F. T. Francis, L. Lee, L. Rogers-Bennett, A. K. Salomon and S. A. Gravem
The sunflower sea star (Pycnopodia helianthoides) is an important mesopredator in kelp forest ecosystems that was devastated by the outbreak of sea star wasting disease (SSWD). This study quantifies how SSWD impacted this iconic animal across its range and documents that the outbreak occurred more…
Charlotte Stanley, Alyssa Mann, Walter Heady
The United States operates thousands of military installations in the U.S. and worldwide, worth about $1.2 trillion. These facilities are where personnel train and test weaponry, with the specific aim of ensuring the nation’s security. With climate change, coastal installations are now being impacted by rising sea levels, erosion and…
Walter Heady, Alyssa Mann, Stacey Solie, Bob Battalio, James Jackson, Kendall Lousen, and Bob Barnes
The U.S. Congress and the Department of Defense (DoD) have determined that climate change is a threat to national security and have required military installations to develop plans to improve the climate resilience of both military installations and key supporting civilian infrastructure. This report, co-authored…
Alyssa Mann, Walter Heady, Charlotte Stanley
TNC and the United States Navy partnered together to prepare for the impacts of climate change on Naval Base Ventura County (NBVC), Point Mugu in California. NBVC is a critical and strategic asset of the U.S. Navy. It is also home to Mugu Lagoon, the…
Alyssa Mann, Walter Heady, Charlotte Stanley
Mary G. Gleason, Jennifer E. Caselle, Walter N. Heady, Vienna R. Saccomanno, Julie Zimmerman, Tristin Anoush McHugh, Norah Eddy
Global kelp forests are biodiverse and productive nearshore ecosystems that provide a wide range of ecosystem services, but they are at risk from both local stressors and global drivers of kelp loss. A structured decision making (SDM) framework can help guide kelp management and restoration…
Butterfield, H.S., M. Reynolds , M.G. Gleason, M. Merrifield, B.S. Cohen, W.N. Heady, D. Cameron, T. Rick, E. Inlander, M. Katkowski, L. Riege, J. Knapp, S. Gennet, G. Gorga, K. Lin, K. Easterday, B. Leahy, M. Bell
This Plan frames the biological and cultural significance and provides the short- and long-term goals, objectives, and priority actions for the Jack and Laura Dangermond Preserve.
Laura S. Brophy, Correigh M. Greene, Van C. Hare, Brett Holycross, Andy Lanier, Walter N. Heady, Kevin O’Connor, Hiroo Imaki, Tanya Haddad, Randy Dana
The authors of this study generated new maps of current and historical tidal wetlands in 450 estuaries throughout Washington, Oregon, and California. Using laser-mapping technology known as LIDAR combined with water elevation models, the team estimated that West Coast estuaries historically covered nearly 2 million acres.…
Walter N. Heady, Brian S. Cohen, Mary G. Gleason, Joshua N. Morris, Sarah G. Newkirk, Kirk R. Klausmeyer, Hilary R. Walecka, Elizabeth Gagneron
Sea level rise presents a new challenge to coastal conservation. The authors quantified and mapped the vulnerability of habitats, imperiled species, and conservation lands to sea level rise throughout the entire California coast, where high biodiversity, high endemism, and 26.5 million people coincide. Combining habitat…
Szeptycki, L., E. Hartge, N. Ajami, A. Erickson, W. N. Heady, L. LaFeir, B. Meister, L. Verdone, J.R. Koseff
The drought in California rekindled interest in ocean desalination as a new and reliable water supply option; yet desalination is expensive, energy intensive, potentially emits greenhouse gases, and has adverse impacts on coastal and marine ecosystems. This report is a synthesis of an Uncommon…
Walter Heady, Ross P. Clark, Kevin O’Connor, Cara Clark, Charles Endris, Sierra Ryan, Sara Stoner-Duncan
Connecting marine, freshwater and terrestrial ecosystems, bar-built estuaries are complex and dynamic coastal confluences that provide a great diversity of habitat and ecosystem services. The wetland habitats of bar-built estuaries are threatened by development, pollution, and climate related changes including diminished streamflows and sea…
Walter N. Heady, Kevin O'Connor, Jennifer Kassakian , Kate Doiron, Charles Endris, Daniel Hudgens, Ross P. Clark , Jena Carter , Mary G. Gleason
Estuaries are some of the most productive ecosystems on the planet. This inventory classifies more than 600 coastal confluences on the West Coast of the United States. Each estuary was classified using the federal Coastal and Marine Ecological Classification Standard (CMECS). A spatial database of…
Brent B. Hughes, Matthew D. Levey, Jennifer A. Brown, Monique C. Fountain, Aaron B. Carlisle, Steven Y. Litvin, Correigh M. Greene, Walter N. Heady, Mary G. Gleason
Estuaries support significant biodiversity and important ecosystem functions such as providing rearing habitat for juvenile fish and invertebrates. This report synthesizes the scientific literature and geospatial data on the nursery requirements of fifteen species of commercial, cultural, and conservation concern and highlights the potential nursery role…