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Marine Sciences Division

Heida Diefenderfer

Marine Sciences Laboratory
Pacific Northwest National Laboratory
1529 West Sequim Bay Road
Sequim, Washington 98382

Biography

Dr. Heida Diefenderfer is a restoration ecologist with the Pacific Northwest National Laboratory (PNNL) Coastal Assessment and Restoration group at the Marine Sciences Laboratory in Sequim, Washington. She conducts research and restoration in a variety of coastal and riverine ecosystems, in particular floodplain wetlands and eelgrass meadows. Currently, she is participating in research and adaptive management for the recovery of Endangered Species Act-listed fish and birds and monitoring the effectiveness of habitat restoration actions. She earned her doctorate in 2007 from the University of Washington, College of Forest Resources, with research focusing on tidal Sitka spruce swamps of the lower Columbia River floodplain. Dr. Diefenderfer pursued forest ecology at Reed College (B.A., Biology, 1991) and Native American studies and writing at The Evergreen State College (B.A. Liberal Arts, 1997). She also holds an M.A. in English from Western Washington University (1999). Since 1990, she has performed research and writing for many governmental agencies and non-governmental organizations in the areas of ecosystem conservation and restoration, sustainable forest and fisheries management, and the recovery of threatened and endangered species.

Education and Credentials

  • B.A. Biology (minor: Cognitive Science), Reed College, 1991
  • B.A. Liberal Arts (Native American Studies/Professional Writing), The Evergreen State College, 1997
  • M.A. English, Western Washington University, 1999
  • Ph.D. Forest Resources (Ecosystem Analysis), University of Washington, 2007

Affiliations and Professional Service

  • Ecological Society of America
  • Society for Ecological Restoration International

PNNL Publications

2016

2015

  • Diefenderfer HL. 2015. "Coastal Conservation." Marine Biology Research 11(4):446-448.  doi:10.1080/17451000.2014.999095
  • Coleman AM, HL Diefenderfer, DL Ward, and AB Borde. 2015. "A Spatially Based Area-Time Inundation Index Model Developed to Assess Habitat Opportunity in Tidal-Fluvial Wetlands and Restoration Sites." Ecological Engineering 82:624-642.  doi:10.1016/j.ecoleng.2015.05.006
  • Jay DA, K Leffler, HL Diefenderfer, and AB Borde. 2015. "Tidal-Fluvial and Estuarine Processes in the Lower Columbia River: I. Along-channel Water Level Variations, Pacific Ocean to Bonneville Dam." Estuaries and Coasts 38(2):415-433.  doi:10.1007/s12237-014-9819-0
  • Tian B, Y Zhou, RM Thom, HL Diefenderfer, and Q Yuan. 2015. "Detecting wetland changes in Shanghai, China using FORMOSAT and Landsat TM imagery." Journal of Hydrology 529(Part 1):1-10.  doi:10.1016/j.jhydrol.2015.07.007

2013

2012

2011

  • Diefenderfer HL, GE Johnson, NK Sather, JR Skalski, EM Dawley, AM Coleman, KG Ostrand, KC Hanson, DL Woodruff, EE Donley, Y Ke, KE Buenau, AJ Bryson, and RL Townsend. 2011. Evaluation of Life History Diversity, Habitat Connectivity, and Survival Benefits Associated with Habitat Restoration Actions in the Lower Columbia River and Estuary, Annual Report 2010PNNL-20295 Final, Pacific Northwest National Laboratory, Richland, WA. 
  • Diefenderfer HL, RM Thom, GE Johnson, JR Skalski, KA Vogt, BD Ebberts, GC Roegner, and E Dawley. 2011. "A Levels-of-Evidence Approach for Assessing Cumulative Ecosystem Response to Estuary and River Restoration Programs." Ecological Restoration 29(1-2):111-132. 
  • Thom RM, HL Diefenderfer, JE Adkins, C Judd, MG Anderson, KE Buenau, AB Borde, and GE Johnson. 2011. "Guidelines, processes and tools for coastal ecosystem restoration, with examples from the United States." Plankton & Benthos Research 5(Supplement):185-201.  doi:10.3800/pbr.5.185

2010

2009

  • Diefenderfer HL, KL Sobocinski, RM Thom, CW May, AB Borde, SL Southard, J Vavrinec, III, and NK Sather. 2009. "Multiscale Analysis of Restoration Priorities for Marine Shoreline Planning." Environmental Management 44(4 ):712-731.  doi:10.1007/s00267-009-9298-4
  • Johnson GE, HL Diefenderfer, AB Borde, EM Dawley, BD Ebberts, GC Roegner, MT Russell, JR Skalski, RM Thom, J Vavrinec, III, and SA Zimmerman. 2009. Evaluating Cumulative Ecosystem Response to Restoration Projects in the Lower Columbia River and Estuary, 2008PNNL-18677, Pacific Northwest National Laboratory, Richland, WA. 

2008

2007

2006

2005

  • Diefenderfer HL, C Roegner, RM Thom, EM Dawley, AH Whiting, GE Johnson, KL Sobocinski, MG Anderson, and B Ebberts. 2005. Evaluating Cumulative Ecosystem Response to Restoration Projects in the Columbia River Estuary, Annual Report 2004PNNL-15102, Pacific Northwest National Laboratory, Richland, WA. 
  • Diefenderfer HL, RM Thom, and K Hofseth. 2005. "A Framework for Risk Analysis for Ecological Restoration Projects in the U.S. Army Corps of Engineers ." Chapter 4 in Economics and Ecological Risk Assessment: Applications to Watershed Management, Environmental and Ecological Risk Assessment Series, vol. 5, ed. Randall J. F. Bruins, Matthew T. Heberling, pp. 57-105.  CRC Press, Boca Raton, FL. 
  • Thom RM, GD Williams, and HL Diefenderfer. 2005. "Balancing the Need to Develop Coastal Areas with the Desire for an Ecologically Functioning Coastal Environment: Is Net Ecosystem Improvement Possible?" Restoration Ecology 13(1):193-203.  doi:10.1111/j.1526-100X.2005.00024.x

2004

  • Diefenderfer HL, SL Sargeant, RM Thom, AB Borde, PF Gayaldo, CA Curtis, BL Court, DM Pierce, and DS Robison. 2004. "Demonstration Dock Designed to Benefit Eelgrass Habitat Restoration (Washington)." Ecological Restoration 22(2):140-141. 

2003

  • Diefenderfer HL, SL Sargeant, RM Thom, AB Borde, PF Gayaldo, CA Curtis, BL Court, DM Pierce, and DS Robison. 2003. "Dock Design to Facilitate the Restoration of Eelgrass in Port Townsend Bay, Washington." In Assembling the Pieces - Restoration, Design and Landscape Ecology: Proceedings of the Annual Conference of the Society for Ecological Restoration International, November 19-22, 2003, Austin, Texas.  Society for Ecological Restoration International, Tucson, AZ. 
  • Sargeant SL, RM Thom, HL Diefenderfer, AB Borde, and JA Southard. 2003. "Evaluation of Methods to Increase Light under Large Overwater Structures." In 2003 Georgia Basin/Puget Sound Research Conference Proceedings, Vancouver, BC, March 31 - April 3, 2003, ed. TW Droscher and DA Fraser.  Puget Sound Action Team, Olympia, WA. 
  • Southard JA, GD Williams, SL Sargeant, HL Diefenderfer, and ML Blanton. 2003. "Using Advanced Scientific Diving Technologies to Assess the Underwater Environment." In 2003 Georgia Basin/Puget Sound Research Conference Proceedings, Vancouver, BC, March 31 - April 3, 2003, ed. TW Droscher and DA Fraser.  Puget Sound Action Team, Olympia, WA. 

2002

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Marine Sciences Laboratory
1529 W. Sequim Bay Road
Sequim, WA 98382
Phone: (360) 683-4151
Fax: (360) 681-3699