Staff Profile
Emmett Duffy Photo


Emmett Duffy is Director of the Smithsonian’s Tennenbaum Marine Observatories Network, which coordinates the developing MarineGEO program. MarineGEO is building a worldwide partnership to administer an annual health exam for coastal marine life: documenting how and why coastal sea life is changing, and how that change affects resilience of the marine ecosystems humans depend on. The research focuses on biological diversity as the heart of healthy marine ecosystems and how they respond together to global change. Duffy is a marine biologist who has worked in seagrass and coral reef ecosystems around the world. He has contributed to scientific syntheses linking biodiversity to ecosystem health, the US National Climate Assessment, and visioning for development of an international Marine Biodiversity Observation Network. He was awarded an Aldo Leopold Leadership Fellowship in 2006, Japan’s inaugural Kobe Prize in Marine Biology in 2011, and a Virginia Outstanding Faculty award in 2013. Duffy came to the Smithsonian in 2013 after 19 years at the College of William and Mary’s Virginia Institute of Marine Science. 

Publications (Google Scholar)


  • Lefcheck, Jonathan S., Byrnes, Jarrett E. K., Isbell, Forest, Gamfeldt, Lars, Griffin, John N., Eisenhauer, Nico, Hensel, Marc J. S., Hector, Andy, Cardinale, Bradley J. and Duffy, James Emmett. (2015). Biodiversity enhances ecosystem multifunctionality across trophic levels and habitats . Nature Communications, 6
  • Stuart-Smith, Rick, Bates, Amanda E., Lefcheck, Jonathan S., Duffy, James Emmett, Baker, Susan C., Thomson, Russell J., Stuart-Smith, Jemina, Hill, Nicole A., Kininmonth, Stuart J., Airoldi, Laura, Becerro, Mikel A., Campbell, Stuart J., Dawson, Terence P., Navarrete, Sergio A., Soler, German, Strain, Elisabeth M. A., Willis, Trevor J. and Edgar, Graham J. (2015). The potential of trait-based approaches to contribute to marine conservation. Marine Policy, 51 , 148-150.
  • Howard, Jennifer, Babij, Eleanora, Griffis, Roger, Helmuth, Brian, Himes-Cornell, Amber, Niemier, Paul, Orbach, Michael, Petes, Laura, Allen, Stewart, Auad, Guillermo, Auer, Carol, Beard, Russell, Boatman, Mary, Bond, Nicholas, Boyer, Timothy, Brown, David, Clay, Patricia, Crane, Katherine, Cross, Scott, Dalton, Michael, Diamond, Jordan, Diaz, Robert, Dortch, Quay, Duffy, James Emmett, Fauquier, Deborah, et al. (2013). Oceans and Marine Resources in a Changing Climate. Oceanography and Marine Biology: an Annual Review, 51 , 71-192.
  • Ruckelshaus, M., Doney, S. C., Galindo, H. M., Barry, J. P., Chan, F., Duffy, James Emmett, English, C. A., Gaines, S. D., Grebmeier, J. M., Hollowed, A. B., Knowlton, Nancy, Polovina, Jeffrey J., Rabalais, N. N., Sydeman, W. J. and Talley, L. D. (2013). Securing ocean benefits for society in the face of climate change. Marine Policy, 40 , 154-159.
  • Doney, Scott C., Ruckelshaus, Mary, Duffy, James Emmett, Barry, James, Chan, Francis, English, Chad A., Hines, Heather M., Grebmeier, Jacqueline M., Hollowed, Anne B., Knowlton, Nancy, Polovina, Jeffrey J., Rabalais, Nancy N., Sydeman, William J. and Talley, Lynne D. (2012). Climate Change Impacts on Marine Ecosystems. Annual Review of Marine Science, 4 , 11-37.
  • Hultgren, Kristin M. and Duffy, James Emmett. (2012). Phylogenetic community ecology and the role of social dominance in sponge-dwelling shrimp. Ecology Letters, 15 (7) , 704-713.
  • Douglass, James G., Duffy, James Emmett and Canuel, Elizabeth A. (2011). Food Web Structure in a Chesapeake Bay Eelgrass Bed as Determined through Gut Contents and 13C and 15NIsotope Analysis. Estuaries and Coasts, 34 (4) , 701-711.
  • Hultgren, Kristin M. and Duffy, James Emmett. (2011). Multi-Locus Phylogeny of Sponge-Dwelling Snapping Shrimp (Caridea: Alpheidae: Synalpheus) Supports Morphology-Based Species Concepts. Journal of Crustacean Biology, 31 (2) , 352-360.
  • Hultgren, Kristin M., MacDonald, Kenneth S., III and Duffy, James Emmett. (2011). Sponge-dwelling snapping shrimps (Alpheidae: Synalpheus) of Barbados, West Indies, with a description of a new eusocial species. Zootaxa, (2834) , 1-16.
  • Douglass, James G., France, Kristin E., Richardson, J. Paul and Duffy, James Emmett. (2010). Seasonal and interannual change in a Chesapeake Bay eelgrass community: insights into biotic and abiotic control of community structure. Limnology and Oceanography, 55 (4) , 1499-1520.
  • Hultgren, Kristin M. and Duffy, James Emmett. (2010). Sponge host characteristics shape the community structure of their shrimp associates. Marine Ecology Progress Series, 407 , 1-12.
  • Hultgren, Kristin M., Macdonald, Kenneth S.,III and Duffy, James Emmett. (2010). Sponge-dwelling snapping shrimps of Curacao, with descriptions of three new species. Zootaxa, (2372) , 221-262.
  • MacDonald, Kenneth S., III, Hultgren, Kristin M. and Duffy, James Emmett. (2009). The sponge-dwelling snapping shrimps (Crustacea, Decapoda, Alpheidae, Synalpheus) of Discovery Bay, Jamaica, with descriptions of four new species . Zootaxa, (2199) , 1-57.
  • Toth, Eva and Duffy, James Emmett. (2008). Influence of sociality on allometric growth and morphological differentiation in sponge-dwelling alpheid shrimp . Biological Journal of the Linnean Society, 94 (3) , 527-540.
  • Murawski, Steven, Methot, Richard, Tromble, Galen, Hilborn, Ray W., Briggs, John C., Worm, Boris, Barbier, Edward B., Beaumont, Nicola, Duffy, James Emmett, Folke, Carl, Halpern, Benjamin S., Jackson, Jeremy B. C., Lotze, Heike K., Micheli, Fiorenza, Palumbi, Stephen R., Sala, Enric, Selkoe, Kimberley A., Stachowicz, John J. and Watson, Reg. (2007). Biodiversity loss in the ocean: How bad is it? . Science, 316 (5829) , 1281b-1284.