• Atlantic Ocean beach at Cape Cod National Seashore

    Cape Cod

    National Seashore Massachusetts

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  • Nauset Marsh Trail Footbridge Temporary Closure After Labor Day

    A small footbridge on the Nauset Marsh trail will be closed for repair for two weeks following Labor Day. Ask at the visitor center for detour information.

  • Sections of Boardwalk Closed at Red Maple Swamp Trail

    Sections of the boardwalk at the Red Maple Swamp Trail have been closed due to structural deterioration and safety concerns. Check at Salt Pond Visitor Center for the current status of this trail, and for your safety, remain out of closed areas.

Megan Tyrrell

Megan Tyrrell

Megan Tyrrell

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Name: Megan Tyrrell

Official Title: Research and Monitoring Coordinator

Phone: 508 487 3262 x 0510

Email: e-mail us

Education:

B.A. Biology and Env. Studies, Macalester College, 1990

M.S. Zoology, University of New Hampshire, Durham, 1999

Ph.D. Zoology, University of New Hampshire, Durham, 2002

Research Interests and Lab Responsibilities:

Marine ecology, benthic ecology, and non-indigenous species ecology.

Representative Publications:

Tyrrell, M.C., Dionne, M. and Eberhardt, S.A. 2012. Salt marsh fucoid algae: overlooked ecosystem 1 engineers of north temperate salt marshes. Estuaries and Coasts. 35(3)754-762.

Tyrrell, M.C., J.S. Link and H. Moustahfid. 2011. The importance of including predation in fish population models: implications for biological reference points. Fisheries Research doi:10.1016/j.fishres.2010.12.025

Tyrrell, M.C., Moustahfid, H., Link, J.S. and Overholtz, W. 2008. Evaluating the effect of predation mortality on forage species population dynamics in the Northeast US continental shelf ecosystem: an application using multispecies virtual population analysis. ICES Journal of Marine Science. 65: 1689-1700.

Tyrrell, M.C., M. Dionne and J.A. Edgerly. 2008. Physical factors mediate effects of grazing by a non-indigenous snail species on saltmarsh cordgrass (Spartina alterniflora) in New England marshes. ICES Journal of Marine Science, 65: 000-000.

Tyrrell, M.C. and J.E. Byers. 2007 Do artificial substrates favor nonindigenous fouling species over natives?. Journal of Experimental Marine Biology and Ecology. 342(1): 54-60.

Tyrrell, M.C., P. A. Guarino and L.G. Harris. 2006. Predatory impacts of two introduced crab species: Inferences from microcosms. Northeastern Naturalist. 13(3): 375-390.

Harris, L.G. and M.C. Tyrrell. 2001. Changing community states in the Gulf of Maine: synergism between invaders, overfishing and climate change. Biological Invasions 3: 9-21.

Tyrrell, M.C. and L.G. Harris. 2000. Potential impact of the introduced Asian shore crab, Hemigrapsus sanguineus, in northern New England: Diet, feeding preferences and overlap with the green crab, Carcinus maenas. Proceedings of the First National Conference on Marine Bioinvasions, Cambridge, MA. pp. 208-220.

Did You Know?

Spadefoot Toad

An abundance of sandy soil and shallow freshwater ponds for breeding make Cape Cod National Seashore an ideal landscape for Spadefoot Toads. A Threatened Species, the Seashore supports their largest known population in the Northeast. Some park roads are closed on rainy nights to protect them.