2011
DOI: 10.3368/er.29.3.243
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Water Temperature as a Limiting Factor in the Colonization of a Partially-Restored Coastal Lagoon: Case Study of a Gastropod Herbivore and Control of Macroalgae

Abstract: East Harbor (Truro, Massachusetts, U.S.A.) is a tidally-restricted salt marsh lagoon that has undergone partial restoration since 2002. After reintroducing seawater to the system following nearly 140 years of impoundment, remarkable transformations in plant and animal communities have occurred. But while a host of marine fish, crustaceans, and benthic invertebrates have become established throughout the system, an important herbivore, common periwinkle (Littorina littorea) has not. This gastropod is absent thr… Show more

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Cited by 5 publications
(12 citation statements)
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“…The 2006-2007 macroalgal bloom at East Harbor caused very high clam mortality, and today clam densities remain much lower than they were in 2005 (Thiet et al in press); thus, the cycle of heavy clam colonization, subsequent macroalgal blooms, and resultant clam dieback may signify this system's process of equilibrating to greater stability in population densities and physical properties following restoration. Nonetheless, although severe macroalgal blooms have not occurred in East Harbor since 2007, macroalgae continue to dominate the aquatic plant community at the site and threaten the productivity of widgeon grass, eelgrass, and benthic fauna (Smith 2011). Seeding the system with certain gastropod grazers may keep algal growth in check, but some gastropods, such as periwinkles, will likely only survive if summer water temperatures at the site are lower (Smith et al 2011).…”
Section: Discussionmentioning
confidence: 98%
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“…The 2006-2007 macroalgal bloom at East Harbor caused very high clam mortality, and today clam densities remain much lower than they were in 2005 (Thiet et al in press); thus, the cycle of heavy clam colonization, subsequent macroalgal blooms, and resultant clam dieback may signify this system's process of equilibrating to greater stability in population densities and physical properties following restoration. Nonetheless, although severe macroalgal blooms have not occurred in East Harbor since 2007, macroalgae continue to dominate the aquatic plant community at the site and threaten the productivity of widgeon grass, eelgrass, and benthic fauna (Smith 2011). Seeding the system with certain gastropod grazers may keep algal growth in check, but some gastropods, such as periwinkles, will likely only survive if summer water temperatures at the site are lower (Smith et al 2011).…”
Section: Discussionmentioning
confidence: 98%
“…Nonetheless, although severe macroalgal blooms have not occurred in East Harbor since 2007, macroalgae continue to dominate the aquatic plant community at the site and threaten the productivity of widgeon grass, eelgrass, and benthic fauna (Smith 2011). Seeding the system with certain gastropod grazers may keep algal growth in check, but some gastropods, such as periwinkles, will likely only survive if summer water temperatures at the site are lower (Smith et al 2011). This can be achieved by increasing the daily tide range in the main lagoon and northwest cove, thereby reducing water temperatures and creating a more hospitable environment for periwinkles.…”
Section: Discussionmentioning
confidence: 98%
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