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      Associations of concern: declining seagrasses and threatened dependent species

      , , , ,
      Frontiers in Ecology and the Environment
      Wiley-Blackwell

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          Cascading effects of the loss of apex predatory sharks from a coastal ocean.

          Impacts of chronic overfishing are evident in population depletions worldwide, yet indirect ecosystem effects induced by predator removal from oceanic food webs remain unpredictable. As abundances of all 11 great sharks that consume other elasmobranchs (rays, skates, and small sharks) fell over the past 35 years, 12 of 14 of these prey species increased in coastal northwest Atlantic ecosystems. Effects of this community restructuring have cascaded downward from the cownose ray, whose enhanced predation on its bay scallop prey was sufficient to terminate a century-long scallop fishery. Analogous top-down effects may be a predictable consequence of eliminating entire functional groups of predators.
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            Natural and human-induced disturbance of seagrasses

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              The Charisma of Coastal Ecosystems: Addressing the Imbalance

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                Author and article information

                Journal
                Frontiers in Ecology and the Environment
                Frontiers in Ecology and the Environment
                Wiley-Blackwell
                1540-9295
                June 2009
                June 2009
                : 7
                : 5
                : 242-246
                Article
                10.1890/080041
                97659492-7ef3-4e8b-8783-baec14f8eb93
                © 2009

                http://doi.wiley.com/10.1002/tdm_license_1.1

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