Aquatic Sciences Meeting, Albuquerque 2001

CS37 Zooplankton

Date: Thursday, February 15, 2001, Time: 9:45:00 AM

Location: Aztec

Wishner, K, F, University of Rhode Island, Narragansett, USA, kwishner@gso.uri.edu

Sullivan, B, , University of Rhode Island, Narragansett, USA, bsull@gso.uri.edu

Outram, D, , University of Rhode Island, Narragansett, USA, doutram@gso.uri.edu

Gelfman, C, , University of Rhode Island, Narragansett, USA, cgelfman@gso.uri.edu

VanKeuren, D, , University of Rhode Island, Narragansett, USA, dvankeur@gso.uri.edu

ZOOPLANKTON IN TIDAL FRONTS: BIOLOGICAL-PHYSICAL COUPLING ON GEORGES BANK

Zooplankton distributions relative to water column structure, frontal features, and the tidal cycle were studied during the 1999 US GLOBEC program at two fronts on Georges Bank. Two sampling schemes were employed: a series of transects of 3 stations spanning the front at different phases of the tidal cycle day and night and a series of replicate tows at each station every 4 hrs for 24 hrs. MOCNESS zooplankton tows along with physical oceanographic sampling provided details of zooplankton vertical distributions, the water column structure, and tidal dynamics. At both fronts, tidal effects on water column structure and zooplankton distributions were clearly evident. Distributions of copepod species with contrasting diel vertical migration behavior and water mass associations, and distributions of their predators, were affected in different ways depending on tidal phase, location relative to the front, and time of day.

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Aquatic Sciences Meeting, Albuquerque 2001

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