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Seamount Communities and Pelagic Interfaces: A Tale of Two Seamounts
File Name wishner.pps
Data Type presentation
Computer Program Microsoft Powerpoint 2003
File Size 16.53 MB - 1 file
Expert Level College and Introduction to Science
Contributor Karen Wishner
Source No source
Description
What happens when a strong pelagic chemical interface intersects a seamount? How do responses of zooplankton and benthos differ and what unique interactions are created by the seamount situation? We have opportunistically explored two examples of this phenomenon and in this keynote presentation from Karen Wishner during the First SBN Workshop two seamounts are discussed as examples, one in the eastern tropical Paficif (Volcano 7) and one in the Caribbean Sea near Grenada (Kick'em Jenny). The first deals with a seamount penetrating into the oxygen minimum zone; the second deals with hydrothermal vent effluent in a volcanic crater. In both cases, the chemical gradient seems to be spatially (horizontally) extensive, although varying in depth over time, and delineates a zone physiologically hostile to many animal taxa. This has created some unusual biological distributions.
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