Estuaries and Coasts

, Volume 42, Issue 2, pp 378–389 | Cite as

Assessing Risks from Harbor Dredging to the Northernmost Population of Diamondback Terrapins Using Acoustic Telemetry

  • T. Castro-SantosEmail author
  • M. Bolus
  • A. J. Danylchuk


The northern diamondback terrapin (Malaclemys terrapin terrapin) is a saltmarsh-dependent turtle that occupies coastal habitats throughout much of the Atlantic coast of North America. We used a novel application of acoustic telemetry to quantify both mobility and occupancy of terrapins within a dredged harbor and surrounding habitats, and used these metrics to quantify relative risk to individuals posed by harbor dredging. Terrapins showed strong fidelity to brumating areas within subdrainages, but extensive movements between these zones during the active period. Activity was greatest in late spring and early summer, declining to near zero by December. Occupancy of the dredge zone was also greatest during spring and summer and declined throughout the autumn months to an annual minimum during winter. Taken together, these data indicate that risks from harbor dredging are minimized during the autumn and early winter months.


Terrapin Telemetry Dredging Brumation Hibernation Movement Modeling Risk Assessment 



Many people and organizations made important contributions to this project. Special thanks to Bob Prescott and the staff of the Massachusetts Audubon’s Wellfleet Bay Wildlife Sanctuary; Dr. Barbara Brennessel of Wheaton College; and Michael Flanagan and the staff of the Town of Wellfleet Harbormaster’s Office. These individuals and groups provided key resources and guidance, without which the project would have been impossible. We also thank agency staff for providing guidance and insights into the management context for the study, including Eve Schluter, Kevin Mooney, and the staff of the Massachusetts Department of Conservation and Recreation and the Natural Heritage and Endangered Species Program, as well as Todd Randall and Craig Martin (US Army Corps of Engineers). This project was funded by a grant from the Massachusetts Department of Conservation and Recreation Waterways Grant (Project # P11-2660-G01 (3803-G)), the University of Massachusetts Amherst, Department of Environmental Conservation, the Diamondback Terrapin Working Group, and Zoar Outdoor (Charlemont, MA). A.J. Danylchuk is supported by the National Institute of Food & Agriculture, U.S. Department of Agriculture, the Massachusetts Agricultural Experiment Station and Department of Environmental Conservation. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.

Supplementary material

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ESM 1 (DOCX 3.55 MB)


  1. Andrews, K.S., and T.P. Quinn. 2012. Combining fishing and acoustic monitoring data to evaluate the distribution and movements of spotted ratfish Hydrolagus colliei. Marine Biology 159 (4): 769–782.CrossRefGoogle Scholar
  2. Brennessel, B. 2006. Diamonds in the marsh: A natural history of the diamondback terrapin. Hanover: University Press of New England.Google Scholar
  3. Brett, J.R., and N.R. Glass. 1973. Metabolic rates and critical swimming speeds of sockeye salmon (Oncorhynchus nerka) in relation to size and temperature. Journal of the Fisheries Research Board of Canada 30 (3): 379–387.CrossRefGoogle Scholar
  4. Butler, J.A., G.L. Heinrich, and R.A. Seigel. 2006. Third workshop on the ecology, status and conservation of diamondback terrapins (Malaclemys terrapin): results and recommendations. Chelonian Conservation and Biology 5 (2): 331–334.CrossRefGoogle Scholar
  5. Castro-Santos, T., and R.W. Perry. 2012. Time-to-event analysis as a framework for quantifying fish passage performance. In Telemetry Techniques, ed. N.S. Adams, J.W. Beeman, and J. Eiler, 427–452. Bethesda: American Fisheries Society.Google Scholar
  6. Cecala, K.K., J.W. Gibbons, and M.E. Dorcas. 2009. Ecological effects of major injuries in diamondback terrapins: implications for conservation and management. Aquatic Conservation-Marine and Freshwater Ecosystems 19 (4): 421–427.CrossRefGoogle Scholar
  7. Chamberlin, J.W., A.N. Kagley, K.L. Fresh, and T.P. Quinn. 2011. Movements of yearling Chinook salmon during the first summer in marine waters of Hood Canal, Washington. Transactions of the American Fisheries Society 140 (2): 429–439.CrossRefGoogle Scholar
  8. Culloch, R.M., P. Anderwald, A. Brandecker, D. Haberlin, B. McGovern, R. Pinfield, F. Visser, M. Jessopp, and M. Cronin. 2016. Effect of construction-related activities and vessel traffic on marine mammals. Marine Ecology Progress Series 549: 231–242.CrossRefGoogle Scholar
  9. Gibbons, J.W., J.E. Lovich, A.D. Tucker, N.N. Fizsimmons, and J.L. Greene. 2001. Demographic and ecological factors affecting conservation and management of diamondback terrapins (Malaclemys terrapin) in South Carolina. Chelonian Conservation and Biology 4: 66–74.Google Scholar
  10. Haramis, G.M., P.P.F. Henry, and D.D. Day. 2011. Using scrape fishing to document terrapins in hibernacula in Chesapeake Bay. Herpetological Review 42: 170.Google Scholar
  11. Harden, L.A., N.A. Diluzuzio, J.W. Gibbons, and M.E. Dorcas. 2007. Spatial and thermal ecology of the diamondback terrapin (Malacelmys terrapin) in a South Carolina salt marsh. Journal of the North Carolina Academy of Sciences. 123: 154–162.Google Scholar
  12. Hart, K.M., and D.S. Lee. 2006. The diamondback terrapin: the biology, ecology, cultural history, and conservation status of an obligate estuarine turtle. Studies in Avian Biology 32: 206–213.Google Scholar
  13. Hauswaldt, J.S., and T.C. Glenn. 2005. Population genetics of the diamondback terrapin (Malaclemys terrapin). Molecular Ecology 14 (3): 723–732.CrossRefGoogle Scholar
  14. Heppell, S.S., H. Caswell, and L.B. Crowder. 2000. Life histories and elasticity patterns: perturbation analysis for species with minimal demographic data. Ecology 81 (3): 654–665.CrossRefGoogle Scholar
  15. Langton, S.D., D. Collett, and R.M. Sibly. 1995. Splitting behavior into bouts—a maximum-likelihood approach. Behaviour 132 (9): 781–799.CrossRefGoogle Scholar
  16. Lawler, A.R., and J.A. Musick. 1972. Sand beach hibernation by a northern diamondback terrapin, Malaclemys terrapin terrapin (Schoepff). Copeia 1972 (2): 389–390.CrossRefGoogle Scholar
  17. Moser, M.L., and S.W. Ross. 1995. Habitat use and movements of shortnose and Atlantic sturgeons in the Lower Cape-Fear River, North-Carolina. Trans. Am.Fish.Soc. 124 (2): 225–234.CrossRefGoogle Scholar
  18. Muehlbauer, E. (1987). Field and laboratory studies of tidal activity in the turtle Malaclemys terrapin terrapin. Thesis New York University. New York, New York. USA. PhD thesis, New York University.Google Scholar
  19. Muldoon, K.A., and R.L. Burke. 2012. Movements, overwintering, and mortality of hatchling diamond-backed terrapins (Malaclemys terrapin) at Jamaica Bay, New York. Canadian Journal of Zoology-Revue Canadienne de Zoologie 90 (5): 651–662.CrossRefGoogle Scholar
  20. O’Donnell, K.P., R.A. Wahle, M. Bell, and M. Dunnington. 2007. Spatially referenced trap arrays detect sediment disposal impacts on lobsters and crabs in a New England estuary. Marine Ecology Progress Series 348: 249–260.CrossRefGoogle Scholar
  21. Peterson, C.C., K.A. Nagy, and J. Diamond. 1990. Sustained metabolic scope. Proceedings of the National Academy of Sciences of the United States of America 87 (6): 2324–2328.CrossRefGoogle Scholar
  22. Pitler, R. 1985. Malaclemys terrapin terrapin (northern diamondback terrapin) behavior. Herpetological Review 16: 82.Google Scholar
  23. R Core Team. 2014. R: A language and environment for stattistical computing. (3.1.1). Vienna: R Foundation for Statistical Computing.Google Scholar
  24. Rohde, J., A.N. Kagley, K.L. Fresh, F.A. Goetz, and T.P. Quinn. 2013. Partial migration and diel movement patterns in Puget Sound Coho Salmon. Transactions of the American Fisheries Society 142 (6): 1615–1628.CrossRefGoogle Scholar
  25. Roosenburg, W.M., K.L. Haley, and S. McGuire. 1999. Habitat selection and movements of diamondback terrapins, Malaclemys terrapin, in a Maryland estuary. Chelonian Conservation and Biology 3: 425–429.Google Scholar
  26. Selby, T.H., K.M. Hart, I. Fujisaki, B.J. Smith, C.J. Pollock, Z. Hillis-Starr, I. Lundgren, and M.K. Oli. 2016. Can you hear me now? Range-testing a submerged passive acoustic receiver array in a Caribbean coral reef habitat. Ecology and Evolution 6 (14): 4823–4835.CrossRefGoogle Scholar
  27. Sheridan, C.M., J.R. Spotila, W.F. Bien, and H.W. Avery. 2010. Sex-biased dispersal and natal philopatry in the diamondback terrapin, Malaclemys terrapin. Molecular Ecology 19 (24): 5497–5510.CrossRefGoogle Scholar
  28. Tucker, A.D., N.N. Fitzsimmons, and J.W. Gibbons. 1995. Resource partitioning by the estuarine turtle Malaclemys terrapin—trophic, spatial, and temporal foraging constraints. Herpetologica 51: 167–181.Google Scholar
  29. Tucker, A.D., J.W. Gibbons, and J.L. Greene. 2001. Estimates of adult survival and migration for diamondback terrapins: conservation insight from local extirpation within a metapopulation. Canadian Journal of Zoology 79 (12): 2199–2209.CrossRefGoogle Scholar
  30. Wilkens, J.L., A.W. Katzenmeyer, N.M. Hahn, J.J. Hoover, and B.C. Suedel. 2015. Laboratory test of suspended sediment effects on short-term survival and swimming performance of juvenile Atlantic sturgeon (Acipenser oxyrinchus oxyrinchus, Mitchill, 1815). Journal of Applied Ichthyology 31 (6): 984–990.CrossRefGoogle Scholar
  31. Yearicks, E., R. Wood, and W. Johnson. 1981. Hibernation of the northern diamondback terrapin, Malaclemys terrapin terrapin. Estuaries 4 (1): 78–80.CrossRefGoogle Scholar

Copyright information

© This is a U.S. government work and its text is not subject to copyright protection in the United States; however, its text may be subject to foreign copyright protection 2018

Authors and Affiliations

  1. 1.USGS, Leetown Science Center–S.O. Conte Anadromous Fish Research CenterTurners FallsUSA
  2. 2.Department of Environmental ConservationUniversity of Massachusetts AmherstAmherstUSA

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