By Judith Pederson (auth.), Judith Pederson (eds.)
As the worldwide fee of marine introductions raises, unique species exert higher monetary and ecological affects, affecting ecosystems and human healthiness. The complexity of marine ecosystems demanding situations our skill to discover effortless suggestions to prevention, administration, and keep an eye on of introductions. This e-book highlights problems with well timed value in marine bioinvasion technology. chosen subject matters discover the aptitude evolutionary outcomes and ecological affects of brought organisms, research the feasibility of organic keep watch over, and describe styles of creation. those papers have been offered on the moment overseas convention on Marine Bioinvasions, which featured new marine invasion examine from worldwide. those papers may be of curiosity to scientists, scholars, and bosses with an curiosity in marine bioinvasions and the applying of information to administration concerns.
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Extra resources for Marine Bioinvasions: Patterns, Processes and Perspectives
In clam restoration projects, mesh tents are being used more frequently to protect softshell clams (Beal 1994). Results from this study show mesh tents effectively protect clams, but excluding crabs with tents will result in clams that do not burrow as deep. If tents are removed after one summer, which is common, those shallow clams could be more vulnerable to crab predation. To insure clams are protected, and induce clams to burrow deeper, chemical cues from crab predation could be released beneath the tents.
Productus appears to keep C. maenas out of habitats where dense populations of larger C. productus thrive: waveprotected rocky shores and gently sloping bolder beaches in cool, saline waters. On those beaches C. maenas larvae may settle high on the shore but as the young crabs mature and migrate down, they will encounter resistance from the larger C. productus. While large male C. productus spend most of their time in the subtidal, they do migrate into the intertidal with the tide to forage (Robles et al.
Survival of clams deeper in the sediment was higher than clams at more shallow depths. This study is intended to provide preliminary information for the development of more effective strategies for protecting soft-shell clams. The results from this study suggest clam depth is an important parameter to measure when monitoring clam populations in invaded estuaries or during restoration projects. In addition, excluding crabs is initially effective for protecting clams, but we may promote clam survival after tent removal by inducing clams to burrow deeper while protected.