Isa Woo

Biography

I am a Biologist with USGS, Western Ecological Research Center.  My research focuses on estuaries, restoration research, and monitoring in the San Francisco Bay and Puget Sound ecosystems.   

With over 10 years of experience leading the Wetland Restoration Program at USGS San Francisco Bay Estuary Field Station and have been fortunate to have worked in amazing wetlands, including the Alaskan tundra, Mo'orea mangroves, Wisconsin lacustrine wetlands, and coastal and tidal marshes in San Francisco Bay and Puget Sound.  At USGS, I have helped developed, implemented, and established new tools to track restoration change (i.e., remote sensing, RTK GPS mapping, bathymetry system, remote logger network) as well as establish the benthic ecology laboratory.  As a cohesive team, we provide science support to land managers with assessments of early phase estuarine restorations within a long term monitoring framework (incorporating Climate Change and Blue Carbon data needs). 

We work closely with Federal, Tribal, and State managers so that applied research addresses adaptive management priorities on a variety of topic areas such as: restoration effectiveness, USFWS Tidal Marsh Recovery Plan species and habitats, benthic invertebrate prey availability and carrying capacity for shorebirds, juvenile salmonid invertebrate prey within habitat mosaics within a restored estuary, benthic invertebrate colonization along elevation gradients, methylmercury in tidal marsh, food webs, and inundation and salinity effects on plants. The manuscript Woo and Zedler 2002 was selected as one of the top 30 papers in the past 30 years in the international journal Wetlands (http://www.springer.com/life+sciences/ecology/journal/13157?detailsPage=press)

I am also interested in outreach and education.  I co-created an online repository of wetland monitoring www.nisquallydeltarestoration.org, and designed a practitioner’s online guide to monitoring methods http://tidalmarshmonitoring.net/.   Our programs have benefitted from student interns (high school to graduate level students) through various internships (e.g., USGS NAGT, SISNAR, and Youth internships, Solano Community College Internships, and Benicia High School Ech2O Academy).

 

 

 

 

 

 

PAST PUBLICATIONS

Davis, M. J., Woo, I., Ellings, C. S., Hodgson, S., Beauchamp, D. A., Nakai, G. and De La Cruz, S. E. W.  2019. Freshwater Tidal Forests and Estuarine Wetlands May Confer Early Life Growth Advantages for Delta‐Reared Chinook Salmon. Trans Am Fish Soc, 148: 289-307. doi:10.1002/tafs.10134

Drexler, J. Z., Woo, I. , Fuller, C. C. and Nakai, G. 2019. Carbon accumulation and vertical accretion in a restored versus historic salt marsh in southern Puget Sound, Washington, United States. Restor Ecol. doi:10.1111/rec.12941

Holmquist, J.R., L. Windham-Myers, N. Bliss, S. Crooks, J.T. Morris, P.J. Megonigal, T. Troxler, D. Weller, J. Callaway, J. Drexler, M.C. Ferner, M.E. Gonneea, K. Kroeger, L. Schile-beers, I. Woo, K. Buffington, B.M. Boyd, J. Breithaupt, L.N. Brown, N. Dix, L. Hice, B.P. Horton, G.M. Macdonald, R.P. Moyer, W. Reay, T. Shaw, E. Smith, J.M. Smoak, C. Sommerfield, K. Thorne, D. Velinsky, E. Watson, K. Grimes, and M. Woodrey. 2019. Tidal Wetland Soil Carbon Stocks for the Conterminous United States, 2006-2010. ORNL DAAC, Oak Ridge, Tennessee, USA. https://doi.org/10.3334/ORNLDAAC/1612

Woo, I., Davis, M.J., and De La Cruz, S., 2018. Changes in aquatic prey resources in response to estuary restoration in Willapa Bay, southwestern Washington: U.S. Geological Survey Open-File Report 2018-1194, 32 p., https://doi.org/10.3133/ofr20181194

Davis, M.J., I. Woo, C.S. Ellings, S. Hodgson, D. Beauchamp, G. Nakai, and S. De La Cruz. 2018.  Integrated diet analyses reveal contrasting trophic niches for wild and hatchery juvenile Chinook salmon in a large river delta.  Transactions of the American Fisheries Society 147:818–841

Smith, KR, MK Riley, L Barthman-Thompson, I. Woo, MJ Statham, S. Estrella, D. Kelt. 2018. Towards salt marsh harvest mouse recovery: a review. San Francisco Estuary and Watershed Science 16(2). https://doi.org/10.15447/sfews.2018v16iss2art2

Holmquist, JR, L Windham-Myers, N Bliss, S Crooks, JT Morris,  PJ Megonigal, T Troxler, D Weller, J Callaway, J Drexler, MC Ferner, ME Gonneea, KD Kroeger, L Schile-Beers, I Woo, K Buffington, BM Boyd, J Breithaupt, LN Brown, N Dix, L Hice, BP Horton, GM MacDonald, RP Moyer, W Reay, T Shaw, E Smith, JM Smoak, C Sommerfield, K Thorne, D Velinsky, E Watson, K Wilson Grimes, M Woodrey. 2018. Accuracy and Precision of Tidal Wetlands Soil Carbon Mapping in the Conterminous United States. Nature Scientific Reports 8(9478). DOI:10.1038/s41598-018-26948-7.

Davis, M.J., C.S. Ellings, I. Woo. S. Hodgson, K. Larsen, and G. Nakai. 2018. Gauging resource exploitation by juvenile Chinook salmon (Oncorhynchus tshawytscha) in restoring estuarine habitat. Restoration Ecology.  26(5): 976-986.  DOI:10.1111/rec/12643

Woo, I., M.J. Davis, C.S. Ellings, G. Nakai, J.Y. Takekawa, and S.D.L. Cruz. 2018. Enhanced invertebrate prey production following estuarine restoration supports foraging for multiple species of juvenile salmonids (Oncorhynchus spp.).  Restoration Ecology 26(5): 964-975. DOI:10.1111/rec.12658

Byrd, K.B., Ballanti, L.R., Thomas, N.M., Nguyen, D.K., Holmquist, J.R., Simard, M., Windham-Myers, L., Schile, L.M., Parker, V.T., Callaway, J.C., Vasey, M.C., Herbert, E.R., Davis, M.J., Woo, I., De La Cruz, S., Kroeger, K.D., Gonneea, M.E., O'Keefe Suttles, J., Megonigal, J.P., Lu, M., McFarland, E.K., Brooks, H.E.A., Drake, B.G., Peresta, G., Peresta, A., Troxler, T., and Castaneda-Moya, E. 2017. Biomass/Remote Sensing dataset: 30m resolution tidal marsh biomass samples and remote sensing data for six regions in the conterminous United States: U.S. Geological Survey data release, https://doi.org/10.5066/F77943K8.

Ballanti, L., KB Byrd, I Woo, C Ellings. 2017.  Remote Sensing for Wetland Mapping and Historical Change Detection at the Nisqually River Delta. Sustainability 9 (11): article 1919, 32pp.

Davenport, A., J. D. Davis, I. Woo, E. E. Grossman, J. Barham, C. S. Ellings, and J. Y. Takekawa.  2017. Measuring change in extent of eelgrass beds during restoration of a large river delta: a comparison of methods.  Northwest Science 91 (3): 272-282.

Anderson, F., B. Bergamaschi, L. Windham-Myers, I. Woo, S. De La Cruz, J. Drexler, K. Byrd, and K. Thorne. 2016. Assessing wildlife benefits and carbon from restored and natural coastal marshes in the Nisqually River delta: Determining marsh net ecosystem carbon balance: U.S. Geological Survey Fact Sheet 2016-3042, 2 p., http://dx.doi.org/10.3133/fs20163042.

Ellings, C. S., M. J. Davis, E.  Grossman, I. Woo, S. Hodgson, K. L. Turner, G. Nakai, J. E. Takekawa, and J. Y. Takekawa. 2016. Changes in habitat availability for outmigrating juvenile salmon (Oncorhynchus spp.) following estuary restoration. Restoration Ecology. doi: 10.1111/rec.12333

Goals Project (contributing author). 2015. The Baylands and Climate Change: What We Can Do. Baylands Ecosystem Habitat Goals Science Update 2015 prepared by the San Francisco Bay Area Wetlands Ecosystem Goals Project. California State Coastal Conservancy, Oakland, CA.

Belleveau, L. J., J. Y. Takekawa, I. Woo, K. L. Turner, J. B. Barham, J. E. Takekawa, C. S. Ellings, G. Chin-Leo. 2015.  Vegetation community response to tidal marsh restoration of a large river estuary. Northwest Science

David, A. T., C. S. Ellings, I. Woo, C. A. Simenstad, J. Y. Takekawa, K. L. Turner, A. L. Smith, J. E. Takekawa. 2014.  Foraging and Growth Potential of Juvenile Chinook Salmon Following Tidal Restoration of a Large River Delta.  Transactions of the American Fisheries Society.

Rocha, A.R., J. Y. Takekawa, I. Woo, J. Davis, and J. Lovvorn.  In revision.   Temporal variation of macroinvertebrate carrying capacity for shorebirds on an estuarine mudflat. 

Takekawa, J. Y. T., I. Woo, K. M. Thorne, K. J. Buffington, N. Nur, M. Casazza, J. Ackerman. 2012.  Chapter 12: Bird communities: effects of fragmentation, disturbance, and sea level rise on population viability.  In (Palaima, A. Ed). Ecology Conservation, and Restoration of Tidal Marshes: the San Francisco Bay Estuary.  University of California Press.  288pp.

Turner; K., J.Y. Takekawa, I. Woo, C. Ellings, B. Root, and J.E. Takekawa. 2012.  Tidal Marsh Monitoring Online Handbook. Available online at www.tidalmarshmonitoring.org (accessed 09/21/2012)

Woo, I. and J. Y. Takekawa.  2012.  Will inundation and salinity levels associated with projected sea level rise reduce the survival, growth, and reproductive capacity of Sarcocornia pacifica (pickleweed)?  Aquatic Botany 102:8-14.

Woo, I., C. Ellings, E. Grossman, S. Patnude, and P. Shaw. 2012.  Restoring estuaries of the Salish Sea: Case studies and social and scientific challenges. Proceedings summary from Session 2E and 3E.  Proceedings of the 2011 Salish Sea Ecosystem Conference.  Vancouver, BC, Canada. http://www.verney.ca/assets/Woo_Proceedings.pdf

Takekawa, J. Y. T., I. Woo, R. Gardiner, M. Casazza, J. Ackerman, N. Nur, H. Spautz, and L. Liu.  2011. Avian communities in tidal salt marshes of San Francisco Bay: a review of functional groups by foraging guild and habitat association. San Francisco Estuary and Watershed Science.  9(3). 26pp. jmie_sfews_11140. Retrieved from: http://escholarship.org/uc/item/3tg4f18n

Takekawa, J. Y. T., I. Woo, N. D. Athearn, S. A. Demers, R. J. Gardiner, W. M. Perry, N. K. Ganju, G. G. Shellenbarger, and D. H. Schoellhamer.  2010.  Measuring sediment accretion in early tidal marsh restoration.  Wetlands Ecology and Management.  Published online, Springer: DOI 10.1007/s11273-009-9170-6

Tsao, D. C., J. Y. Takekawa, I. Woo, J. Yee, and J. Evens. 2009. Home range, habitat selection and movements of California Black Rails at tidal marshes at San Francisco Bay, California.  The Condor 111(4): 599-610.

Woo, I., J. Y. Takekawa, R. J. Gardiner, R. Storesund, and S. Ehret.  2009.  Integrating terrestrial LiDAR, stereo photogrammetry, and network RTK GPS to map the upper Tolay Creek watershed in northern San Francisco Bay.  Proceedings of the Third Interagency Conference on Research in the Watersheds. Estes Park, CO. U.S. Geological Survey Open File Report.

Tsao, D., K. Miles, J. Y. Takekawa, and I. Woo. 2008. Potential effects of mercury on threatened California black rails. Archives of Environmental Contamination and Toxicology Online First 10.1007/s00244-008-9188-4

Takekawa, J.Y., B. Sacks, I. Woo, M.B. Johnson, and G.D. Wylie. 2006. Effects of Tidal Marsh Fragmentation on Survival of San Pablo Song Sparrows in the San Francisco Bay Estuary. Studies in Avian Biology. 32:238-246.

Takekawa, J.Y., I. Woo, H. Spautz, N. Nur, J. L. Grenier, K. Malamud-Roam, J. C. Norby, A. Cohen, F. Malamud-Roam, S. E. Wainwright-DeLa Cruz. 2006. Environmental threats to tidal marsh vertebrates of the San Francisco Bay Estuary.  Studies in Avian Biology. 32: 176-197.

Woo, I. and J. B. Zedler.  2002. Can nutrients alone shift a sedge meadow towards the invasive Typha x glauca?  Wetlands. 22:509-521.

Woo, I., T. Drlik, L. Swaidon, and W. Quarles.  2002.  Integrated management of Knapweed.  The IPM Practitioner. 24(4).

Drlik, T., W. Quarles, L Swiadon, and I. Woo. 2001. Integrated Management of Tansy Ragwort. The IPM Practitioner. 23(4): 1-8.

Zedler, J. B., R. Lindig-Cisneros, C. Bonilla-Warford, and I. Woo. 2001. Restoration of biodiversity: An overview. Pp. 203-212 in S. Levin, editor. Encyclopedia of Biodiversity, Vol. 5. Academic Press, San Diego.

Woo, I., L. Swiadon, T. Drlik, and W. Quarles. 1999. Integrated management of yellow starthistle. The IPM practitioner : the newsletter of integrated pest management, v. 21 (7), p. 1-10.

Swaidon, L., T. Drlik, and I. Woo. 1998. Integrated control of leafy spurge. IPM Practitioner 20(7):1 -11

Drlik, T., I. Woo and L. Swaiden (Eds.). 1998. Integrated Vegetation Management (IVM) Guide. Bio-Integral Resource Center. Berkeley, CA. 16pp. Please see for all 10 species accounts: www.efn.org/~ipmpa/Noxcontents.html 

 

Reports (2012-2014):

2014

Davis, M., K. Spragens, I. Woo, and S. De La Cruz. 2014. Impacts of estuary restoration on migratory waterfowl: what can bird surveys, prey biomass, and climate change models tell us? Unpublished data summary update to USFWS, Nisqually National Wildlife Refuge, Science Support Program FWIN#2623. 20pp.

Davis, M., I. Woo, and S. De La Cruz. 2014. Changes in aquatic prey resources in response to estuary restoration in Willapa Bay, Washington. Unpublished data summary update to USFWS, Willapa National Wildlife Refuge, Science Support Program FWIN#2516. 10pp.

Davis, M., I. Woo, and S. De La Cruz. 2014. Restoration monitoring at Port Susan Bay and the Stillaguamish River Delta. Unpublished data summary update to The Nature Conservancy. 10pp

Ellings, C, S. Hodgson, E. Perez, E. Grossman, S. Rubin, M. Hayes, C. Curran, K. Larsen, A. Lind-Null, J. Takekawa, I. Woo, K. Turner, A. Smith, A. David, and W. Duvall. 2014. Monitoring and adaptive management of the Nisqually Delta after tidal marsh restoration: restoring ecosystem function for salmon. Final Summary Report for EPA Tribal Implementation Grant (PA-00J150001). Unpublished report by the Nisqually Indian Tribe, Olympia, WA. 44pg

Woo, I., S. De La Cruz, M. Davis, and A. Smith. 2014. 2014 ESRP Annual Update. Assessing effects of restoration on Nisqually River Delta: enhancing invertebrate prey to increase capacity for salmon. Unpublished data summary report to the Washington Estuary and Salmon Restoration Program. 19pp.

Woo, I., A. Smith, S. De La Cruz, Y. Chan, and J. Donald. 2014. Response of invertebrate food webs to tidal marsh restoration of a large river estuary: the Nisqually Delta Restoration Project. Unpublished report to U. S. Fish and Wildlife Service, Nisqually National Wildlife Refuge. Science Support Program, FWIN # 2354

Woo, I., S. De La Cruz, K. Lovette, M. Davis, and A. Smith. 2014. Port Susan Bay post-restoration monitoring brief. Update report for The Nature Conservancy, Skagit Field Office, Mt. Vernon, WA

2013

Smith, L. M., I. Woo, and J. Y. Takekawa. 2013. Napa River Salt Marsh Restoration Project, Pre-Construction Monitoring, San Francisco Bay Marsh Bird Survey, Spring 2013. Unpublished Data Summary Report, U.S. Geological Survey, Western Ecological Research Center, Vallejo, CA. 6 pp.

Smith, A., I. Woo, and J. Y. Takekawa. 2013. Assessing invertebrate prey production in the Skokomish Estuary. Monitoring Brief to the Skokomish Tribe, Skokomish Nation, WA

Takekawa, J.Y., I. Woo, A. Smith. 2013. Response to waterbirds to tidal marsh restoration. Update report for the

US Fish and Wildlife Service, Inventory and Monitoring Program, R1, Nisqually National Wildlife Refuge, Olympia, WA.

Woo, I. and J. Y. Takekawa. 2013. Port Susan Bay pre-restoration monitoring brief. Update report for The Nature Conservancy, Skagit Field Office, Mt. Vernon, WA

Woo, I. and J. Y. Takekawa. 2012. Tidal range monitoring. Update report for the Estuary and Salmon Restoration Program, Seattle, WA.

Woo, I. and J. Y. Takekawa. 2012. Channel Development. Update report for the Estuary and Salmon Restoration Program, Seattle, WA.

Woo, I. and J. Y. Takekawa. 2012. Monitoring salmon foodwebs. Update report for the Estuary and Salmon Restoration Program, Seattle, WA. 

2012

Brand, L. A., L. M. Smith, A. Smith, I. Woo, W. Chan, T. Graham, K. Taylor, and J. Y. Takekawa. 2012. Assessing early tidal marsh restoration at the Napa Plant Site Restoration Project within the Green Island Unit of the Napa-Sonoma Marshes Wildlife Area. Data Summary Report, U. S. Geological Survey, Western Ecological Research Center, Vallejo, CA. 135 pp

Woo, I., J. Y. Takekawa, K. Buffington, G. Salwen, P. Markos, C. Fox, B. Root, and J.E. Takekawa. 2012. Monitoring Waterbirds from the Nisqually National Wildlife Refuge Boardwalk. Update report for the US Fish and Wildlife Service, Inventory and Monitoring Program, R1, Nisqually National Wildlife Refuge, Olympia, WA.

Woo, I., J. Y. Takekawa, K. Buffington, G. Salwen, P. Markos, C. Fox, B. Root, and J.E. Takekawa. 2012. Tidal range monitoring. Update report for the US Fish and Wildlife Service, Inventory and Monitoring Program, R1, Nisqually National Wildlife Refuge, Olympia, WA. 

 

Presentations (2012-2014):

2014

Davis, M., I. Woo, S. De La Cruz, C. Ellings, E. Grossman, S. Rubin, and G. Nakai. 2014. Assessing post-restoration changes in opportunity and capacity on the Nisqually River Delta. Poster presentation for the South Sound Science Symposium. 23 October, 2014. Squaxin Island, WA

Ellings, C., S. Hodgson, E. Perez, J. Cutler, A. Calahan, J. Y. Takekawa, I. Woo, K. Turner, A. Smith, M. Davis, E. Grossman, S. Rubin, M. Hayes, C. Curran, K. Larsen, A. Lind-Null, K. Stenberg, L. Wetzel, A. David, and W. Duvall. 2014. Monitoring and adaptive management of the Nisqually Delta after tidal marsh restoration: a synthesis of short-term ecosystem response. Presentation at the South Sound Science Symposium. 23 October, 2014. Squaxin Island, WA

Ellings, C., K. Turner, J. Y. Takekawa, I. Woo, E. Grossman, A. David, J. Cutler, S. Hodgson, and J. E. Takekawa. Rubin, I. Woo, E. Grossman, and K. Larson. 2014. Linking invertebrates, eelgrass, and chinook salmon diets. 2014. Presentation at the Puget Sound Estuary Monitoring Program. Seattle, WA. 23 September 2014.

Takekawa, J. Y., I. Woo, K. Turner, L. Belleveau, C. Ellings, S. Hodgson, J. Cutler, A. David, E. Grossman, S. Rubin, K. Larsen, A. Lind-Null, C. Curran, J. Barham, and J.E. Takekawa. 2014. Progressing from multidisciplinary to interdisciplinary restoration science: monitoring and applied studies on the Nisqually River Delta. Presentation at the Salish Sea Ecosystem Conference, Seattle, WA. 2 May 2014.

Woo, I., S. De La Cruz, M. Davis, and J. Y. Takekakwa. 2014. Nisqually Delta Restoration Monitoring and Applied Science. Presentation at the Nisqually Estuary Climate Change Workshop. Olympia, WA. 21-22 October 2014

Woo, I., L. Smith, and S. De La Cruz. 2014. Wetland Restoration in San Francisco Bay. Invited lecture at the Solano Community College, Fairfield, CA. 4 November 2014.

Woo, I., K. Thorne, S. De La Cruz, L. Windham-Myers, J. Drexler, K. Byrd, G. Nakai, and C. Ellings. 2014. Blue Carbon and Wildlife Co-benefits: Nisqually Delta case study. Invited presentation at Pacific Northwest Blue Carbon workshop. Portland OR, 9 December 2014.

2013

David, A. C. Ellings, I. Woo, C. Simenstad, K. Turner, A. Smith, and J. Takekawa. 2013. Foraging and growth performance of juvenile Chinook salmon (Oncorhynchus tshawytscha) in a recovering saltmarsh. Presentation to the Washington-British Columbia American Fisheries Society Chapter meeting, Lake Chelan, WA. 25-28 March 2013

David, A. C. Ellings, I. Woo, C. Simenstad, K. Turner, and A. Smith. 2013. Foraging and growth performance of juvenile Chinook salmon (Oncorhynchus tshawytscha) in a restored and recovering saltmarsh. Presentation to the Pacific Estuarine Research Society, Delta Town, British Columbia, Canada. 4-7 April 2013

Takekawa, J. Y. and I. Woo. Restoration monitoring for Large River Deltas. Invited Presentation to the Snohomish County Dept of Public Works. 24 April 2013.

Woo, I. and J.Y. Takekawa. 2013. Invertebrate food resources for juvenile Chinook salmon following estuary restoration at the Nisqually Delta. Science Presentation to the Nisqually Indian Tribe and EPA, Nisqually Science Workshop. 25 April 2013. Olympia, WA.

Woo, I. and J.Y. Takekawa, and L. Smith. 2013. Tidal marsh restoration and research in San Francisco Bay. Invited Presentation to the Delta Stewardship Council, Delta Independent Science Board, Habitat Restoration Review. 14 February 2013, Sacramento, CA.

2012

Belleveau, L.J.; K. Turner; I. Woo; J. Barham; J.E. Takekawa; C. Ellings; G. Chin-Leo. 2012. Evaluating vegetation response to estuary restoration: Nisqually River delta case study. 35th Annual Pacific Estuarine Research Society Conference. Oral Presentation. Anacortes; Washington.

Smith, A.L., J. Y. Takekawa, I. Woo, Y. Chan, L.M. Smith, L.A. Brand, K. Taylor, R, Spenst. 2012. Macroinvertebrate colonization and avian response following salt pond restoration in San Francisco Bay, California, USA. Oral presentation, International Limnological Society, Argentina.

Turner; K., J.Y. Takekawa, and I. Woo. 2013. Monitoring and lessons learned at Port Susan Bay and Nisqually: from plan to program. Oral Presentation. Snohomish County Estuary Restoration Workshop, Washington

Turner; K., J.Y. Takekawa, I. Woo, C. Ellings, B. Root, and J.E. Takekawa. 2012 Tidalmarshmonitoring.org – introducing an online monitoring handbook. 35th Annual Pacific Estuarine Research Society Conference. Oral Presentation. Anacortes; Washington.

Markos, P., K. Turner, J. Y. Takekawa, I. Woo, D. Crump, and R. Fuller. 2012. Port Susan Bay restoration: developing a monitoring framework. 35th Annual Pacific Estuarine Research Society Conference. Oral Presentation. Anacortes; Washington.