Myers, Ransom A. and Baum, Julia K. and Shepherd, Travis D. and Powers, Sean P. and Peterson, Charles H. (2007) Cascading effects of the loss of apex predatory sharks from a coastal ocean. Science.
Full text not available from this repository. (Request a copy)Abstract
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.
| Item Type: | Documents |
|---|---|
| Class Number: | 500.CAS012 |
| Keywords: | Shark, Overfishing, Ecosystem, Impact, Atlantic Ocean, Predation, Fisheries Management |
| Subjects: | Right to Resources |
| Depositing User: | Chitti Babu ICSF |
| Date Deposited: | 15 Feb 2022 09:14 |
| Last Modified: | 15 Feb 2022 09:14 |
| URI: | http://icsfarchives.net/id/eprint/8841 |
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