Predator-mediated Landscape Structure
Ctenophores dominate early in the season. When sea nettles appear, and grow in size and number, medusae can control ctenophore abundance and drastically reduce ctenophore densities in creeks and coves. After the appearance of sea nettles, many ctenophores show partial signs of partial predation.
Predator-mediated landscape structure may be an important factor influencing local, as well as system-wide, abundances and trophic interactions within aquatic systems.
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Preserved larval ctenophore and jellyfish ephyra
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Potential repercussions: Subtle difference in diet can influence spatial variation in habitat suitability for ecologically and economically important prey. Habitats with highest predation potential by gelatinous zooplankton shift over time as a result of distributions and abundances.
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Acknowledgements: Funding agencies for this research were Smithsonian Marine Science Network, Maryland Sea Grant, NOAA-Coastal Oceans Program, EPA/Chesapeake Bay Program. |
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