Faculty & Staff Directory

Douglass, James (Ph.D.)
James Douglass grew up in Olympia, Washington, where he developed a love for nature and marine life. He earned a Bachelor of Science in Biology from Rice University in 2002 and a Ph.D. in Marine Science from the Virginia Institute of Marine Science at the College of William and Mary in 2008. His graduate work focused on food-web ecology in seagrass beds of Chesapeake Bay, and he has continued to investigate marine benthic ecology around the world. Before joining FGCU, he completed postdoctoral fellowships with the Smithsonian Marine Station in Fort Pierce, Florida, and the Northeastern University Marine Science Center in Massachusetts. Dr. Douglass joined FGCU as an Assistant Professor in 2012, was promoted to Associate Professor in 2018, and achieved the rank of full Professor in 2023. Dr. Douglass’s laboratory studies how human-induced stressors—such as water pollution, climate change, and overfishing—impact structure-forming organisms like seagrasses, macroalgae, and oysters, and he advocates for watershed and marine conservation.
Benthic Ecology Laboratory web page
Discover My Professional Expertise on ScholarsCommons
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Education
Toggle Education- PhD Marine Science, College of William and Mary, Virginia Institute of Marine Science, 2008
- BS Biology, Rice University, 2002
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Specialties
Toggle Specialties- Benthic ecology- Seagrasses
- Bivalves
- Water Quality and Human Impacts
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Research and Teaching Interests
Toggle Research and Teaching InterestsDr. Douglass studies the interactions among living organisms and the surrounding environment in benthic (sea bottom) habitats. He is particularly interested in structure-forming organisms like seagrasses, macroalgae, and oysters, because of their important roles in increasing biodiversity and providing ecosystem services like biological productivity and water quality enhancement. Much of his recent research has been directed towards understanding ecosystem responses to man-made environmental stressors, and he tries to combine my research with advocacy for environmental conservation and restoration. Undergraduate and graduate students are a critical component of his research at FGCU, and he encourages motivated students to get involved in his lab's research through volunteering, internships, and independent projects. -
Courses Offered
Toggle Courses Offered- Estuarine Ecology (OCB6635)
- Senior Seminar Marine Science (OCB4936)
- Marine Ecology (OCB4633C)
- Marine Ecosystems Monitoring and Research Methods (PCB3436C)
- Environmental Research Design (ISC3154)
- Introduction to Oceanography (OCE1001C)
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Publications
Toggle Publications- TR Tubbs, RM Smith, AB Catasus, PL Adhikari, JG Douglass, H Urakawa (2025) Seasonal and spatial microbial community dynamics along the shallow southwest Florida continental shelf. Coasts 5(4): 47. https://doi.org/10.3390/coasts5040047
- MC Tillman, RM Smith, TR Tubbs, AB Catasus, H Urakawa, PL Adhikari, JG Douglass (2025) Acute impacts of Hurricane Ian on benthic habitats, water quality, and microbial community composition on the Southwest Florida Shelf. Coasts 5(2): 16 https://doi.org/10.3390/coasts5020016
- FOH Smulders, JE Campbell, AH. Altieri, AR Armitage, ES. Bakker, SC Barry, ST Becker, E Bethel, JG Douglass, HJ van Duijnhoven, J de Fouw, TK Frazer, R Glazner, JA Goeke, G Gorto, KL Heck, OAA Kramer, IA van de Leemput, SA Manuel, CW Martin, IG Martinez López, AM McDonald, CJ Munson, OR O’Shea, VJ Paul, LK Reynolds, OK Rhoades, LM Rodriguez Bravo, A Sang, Y Sawall, K Smith, JE Thompson, B van Tussenbroek, WL Wied, MJA Christianen (2025) Temperature drives seagrass recovery across the Western North Atlantic. Global Change Biology 31:e70172 https://doi.org/10.1111/gcb.70172
- K Ugarelli, JE Campbell, OK Rhoades, CG Munson, AH Altieri, JG Douglass, KL Heck Jr., VJ Paul, SC Barry, L Christ, JW Fourqurean, TK Frazer, ST Linhardt, CW Martin, AM McDonald, VA Main, SA Manuel, C Marco-Méndez, LK Reynolds, A Rodriguez, LM Rodriguez Bravo, Y Sawall, K Smith, WL Wied, CJ Choi, U Stingl (2024) Microbiomes of Thalassia testudinum throughout the Atlantic Ocean, Caribbean Sea, and Gulf of Mexico are influenced by site and region while maintaining a core microbiome. Frontiers in Microbiology 15 https://doi.org/10.3389/fmicb.2024.1357797
- JE Campbell, OK Rhoades, CJ Munson, AH Altieri, JG Douglass, KL Heck Jr., VJ Paul, AR Armitage, SC Barry, E Betheli, L Christ, MJA Christianen, G Dodillet, K Dutton, JW Fourqurean, TK Frazer, BM Gaffeyn, R Glaznerg, JA Goeke, R Grana-Valdesa, VJ Jenkins, OAA Kramer, ST Linhardt, CW Martin, IG Martinez Lopez, AM MacDonald, VA Main, SA Manuel, C Marco-Méndez, DA O’Brien, O O’Shea, CJ Patrick, C Peabody, LK Reynolds, A Rodriguez, LM Rodriguez Bravov, A Sang, Y Sawall, K Smith, FOH Smulders, U Sun, JE Thompson, V van Tussenbroek, WL Wied (2024) Herbivore effects increase with latitude across a foundational seagrass. Nature Ecology & Evolution https://doi.org/10.1038/s41559-024-02336-5
- BM Krebs, N Iadevaia, J Hecker, JG Douglass (2024) A simple approach to estimating the nutrient and carbon storage benefits of restoring submerged aquatic vegetation, applied to Vallisneria americana in the Caloosahatchee Estuary, Florida, USA. Ecological Engineering 200: 107167 https://doi.org/10.1016/j.ecoleng.2023.107167
- JW Fourqurean, JE Campbell, OK Rhoades, CJ Munson, JR Krause, AH Altieri, JG Douglass, KL Heck J., VJ Paul, AR Armitage, SC Barry, E Bethel, L Christ, MJA Christianen, G Dodillet, K Dutton, TK Frazer, BM Gaffey, R Glazner, JA Goeke, R Grana-Valdes, OAA Kramer, ST Linhardt, CW Martin, I Gabriella Martinez Lopes, AM McDonald, VA Main, SA Manuel, C Marco-Mendez, DA O’Brien, O O’Shea, CJ Patrick, C Peabody, LK Reynolds, A Rodriguez, LM Rodriguez Bravo, A Sang, Y Sawall, FOH Smulders, JE Thompson, B van Tussenbroek, WL Wied, SS Wilson. (2023) Seagrass abundance predicts surficial soil organic carbon stocks across the range of Thalassia testudinum in the western North Atlantic. Estuaries and Coasts 46: 1280–1301. https://doi.org/10.1007/s12237-023-01210-0
- JG Douglass, RH Chamberlain, Y Wan, PH Doering (2020) Submerged vegetation responses to climate variation and altered hydrology in a subtropical estuary: interpreting 33 years of change. Estuaries and Coasts. 19 pp. https://doi.org/10.1007/s12237-020-00721-4
- JG Douglass, R Paperno, EA Reyier, AH Hines (2018) Fish and seagrass communities vary across a marine reserve boundary, but seasonal variation in small fish abundance overshadows top-down effects of large consumer exclosures. Journal of Experimental Marine Biology and Ecology 507: 39-52. https://doi.org/10.1016/j.jembe.2018.07.003
- JL Ruesink, JJ Stachowicz, PL Reynolds, C Boström, M Cusson, J Douglass, J Eklöf, AH Engelen, M Hori, K Hovel, K Iken, PO Moksnes, M Nakaoka, MI O'Connor, JL Olsen, EE Sotka, MA Whalen, JE Duffy (2017) Form-function relationships in a marine foundation species depend on scale: a shoot to global perspective from a distributed ecological experiment. Oikos https://doi.org/10.1111/oik.04270
- SC McAskill, JG Douglass (2017) Salinity and temperature alter Pomacea maculata herbivory rates on Vallisneria americana. Journal of Molluscan Studies 83: 481-483 http://dx.doi.org/10.1093/mollus/eyx034
- MES Bracken, JG Douglass, V Perini, GJ Trussell (2017) Spatial scale mediates the effects of biodiversity on marine primary producers. Ecology 98:1434-1443. https://doi.org/10.1002/ecy.1812
- JE Duffy, PL Reynolds, C Boström, JA Coyer, M Cusson, S Donadi, JG Douglass, JS Eklöf, AH Engelen, BK Eriksson, S Fredriksen, L Gamfeldt, C Gustafsson, G Hoarau, M Hori, K Hovel, K Iken, JS Lefcheck, P-O Moksnes, M Nakaoka, MI O'Connor, JL Olsen, JP Richardson, JL Ruesink, EE Sotka, J Thormar, MA Whalen, JJ Stachowicz (2015) Biodiversity mediates top–down control in eelgrass ecosystems: a global comparative-experimental approach. Ecology Letters 18:696-705 https://doi.org/10.1111/ele.12448
- CW Gunnels IV, D Buzasi, MK Cassani, J Douglass, T El-Hefnway, EM Everham III, A Hartley, J Herman, M Mujtaba, J Muller, A Nicolas, L Southard, S Thomas, NE Demers (2015) Engaging students in ethical considerations of the scientific process through a simulated funding panel. CUR Quarterly 36:12-18 http://www.cur.org/download.aspx?id=3184
- JG Douglass (2014) South Florida Water Management District, 2014 Systems Status Report: CERP Northern Estuaries Region, Caloosahatchee Estuary Submerged Aquatic Vegetation 1998-2013 http://141.232.10.32/pm/ssr_2014/mod_ne_2014.aspx
- JG Douglass, EA Canuel, JE Duffy (2011) Food web structure in a Chesapeake Bay eelgrass bed as determined through gut contents and 13C and 15N isotope analysis. Estuaries and Coasts 34: 701-711. https://doi.org/10.1007/s12237-010-9356-4
- JG Douglass, KE France, JP Richardson, JE Duffy (2010) Seasonal and interannual change in a Chesapeake Bay eelgrass community: insights into biotic and abiotic control of community structure. Limnology and Oceanography 55: 1499-1520. https://doi.org/10.4319/lo.2010.55.4.1499
- AC Spivak, EA Canuel, JE Duffy, JG Douglass, JP Richardson (2009) Epifaunal community composition and nutrient addition alter sediment organic matter composition in a natural eelgrass Zostera marina bed: a field experiment. Marine Ecology Progress Series 376: 55-67. https://doi.org/10.3354/meps07813
- JG Douglass, JE Duffy, JF Bruno (2008) Herbivore and predator diversity interactively affect ecosystem properties in a marine community. Ecology Letters 11: 598-608. https://doi.org/10.1111/j.1461-0248.2008.01175.x
- JG Douglass, JE Duffy, AC Spivak, JP Richardson (2007) Nutrient versus consumer control of community structure in a Chesapeake Bay eelgrass habitat. Marine Ecology Progress Series 348: 71-83. https://doi.org/10.3354/meps07091
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Conference Presentations
Toggle Conference PresentationsDr. Douglass and his students regularly present their work at local and national conferences. See Douglass CV for a list of presentations. -
Grants & Awards
Toggle Grants & Awards- Florida Department of Environmental Protection. Clam-seagrass coordinated network experiment: Estero Bay and Marco Island, 2025-2026 - $82,279
- Florida Department of Environmental Protection. Effects of clam size on bivalve seagrass interactions, 2025-2026 – $45,641 (Co-PI on this award to Dr. Melissa May)
- South Florida Water Management District. West coast seagrass mapping, 2026-2026 - $237,524
- Spanish Wells Community Association. Enhancing rip-rap revetments with a living shorelines approach, 2025-2026 - $4000
- Captains for Clean Water. Quantifying the nutrient pollution impacts of aquatic plant management in Florida. 2024-2025 - $10,000
- FGCU Foundation - Student research at Fairwinds HOA, 2025 - $1500
- Ceilley Aquatic Science and Ecology. Pre- and post-restoration monitoring of tape grass (Vallisneria americana), 2025-2027 - $70,000
- Ceilley Aquatic Science and Ecology. Pre- and post-restoration monitoring of tape grass (Vallisneria americana), 2024 - $20,000
- FGCU Foundation - Student research at Fairwinds HOA, 2023 - $750
- NOAA-NMFS-SE-2023-2007899 $970,000 – Federal appropriation in support of research addressing Mercenaria clam and seagrass ecosystem services and co-restoration potential in SW Florida. (Co-PI on this award to Dr. Melissa May)
- NOAA-NOS-NCCOS-2023-2007875 $440,000 – Federal appropriation in support of research addressing biota of artificial reefs on the SW Florida shelf, and their relationship to coastal processes and harmful algal blooms. (Co-PI on this award to Dr. Melissa May)
- US Environmental Protection Agency. Refining a Habitat Suitability Index model for hard clam and seagrass co-restoration in the Charlotte Harbor and Caloosahatchee River. 2023-2025. $548,219 (Co-PI on this award to Dr. Melissa May)
- FGCU Foundation - Student research at Fairwinds HOA, 2021 - $1500
- US Environmental Protection Agency. Caloosahatchee discharge impacts on SW Florida shelf benthos and eutrophication processes as mediated by the benthic environment. 2021-2024. $349,678.
- Martin Foundation- Donation for seagrass research in Estero Bay. 2019-2020. $30,000
- US Environmental Protection Agency. Enhanced water quality and seagrass monitoring in the Caloosahatchee Estuary. 2019-2024. $264,039
- Coastal and Heartland National Estuary Partnership Comprehensive Conservation and Management Plan Restoration Funding Program. Quantifying the water quality benefits of submerged aquatic vegetation (SAV) restoration, 2020-2021. $45,000. With Edwin Everham and David Ceilley.
- FGCU Scholarship-research Venture Fund Committee. Seagrass Health and Restoration: Sediment Dynamics. $16,780. With David Fugate.
- City of Naples, FL. Naples Bay Oyster Reef Restoration Ecological Monitoring, 2018-2021. $50,000. With Serge Thomas.
- Snook and Gamefish Foundation, subcontract through Johnson Engineering Incorporated: Vallisneria americana restoration research assistance, 2018 $5000
- National Science Foundation, Collaborative Research: The tropicalization of Western Atlantic seagrass beds, 2018-2020 $57,496
- South Florida Water Management District, Resolving Uncertainties in Restoration of Seagrasses in the Caloosahatchee Estuary: Epiphytes, 2015-2016 $25,000
- Lee County, FL Gulf Coast University Ecological Baseline Survey of North Spreader Canal, Cape Coral, 2014-2015 $34,452
- South Florida Water Management District, Caloosahatchee River Estuary Patch-Scale Submersed Aquatic Vegetation Monitoring 2013-2014, $47,600
- South Florida Water Management District, Aerial Imagery Acquisition, West Coast Boca Grande to Wiggins Pass, 2014, $41,300
- Florida Department of Environmental Protection, Aerial Imagery Acquisition, Rookery Bay National Estuarine Research Reserve, 2014, $25,875
- South Florida Water Management District, Caloosahatchee River Estuary Patch Scale Submersed Aquatic Vegetation Monitoring and Evaluation 2012-2013, $43,200