Skip Navigation

This Article
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Alert me to new issues of the journal
Right arrow Add to My Personal Archive
Right arrow Download to citation manager
Right arrowRequest Permissions
Google Scholar
Right arrow Articles by Incze, L. S.
Right arrow Articles by Schumacher, J. D.
Right arrow Search for Related Content
PubMed
Right arrow Articles by Incze, L. S.
Right arrow Articles by Schumacher, J. D.
Social Bookmarking
Add to CiteULike   Add to Connotea   Add to Del.icio.us  
What's this?

JOURNAL OF PLANKTON RESEARCH | VOLUME 12 | NUMBER 2 | PAGES 365-379 | 1990
© Oxford University Press

research-article

Microzooplankton, vertical mixing and advection in a larval fish patch

Lewis S. Incze1, Peter B. Ortner2 and James D. Schumacher3

1Bigehw Laboratory for Ocean Sciences West Boothbay Harbor, ME 04575 2Atlantic Oceanographic and Meteorological Laboratory, NOAA 4301 Rickenbacker Causeway, Miami, FL 33149 3Pacific Marine Environmental Laboratory, NOAA 7600 Sand Point Way NE, Seattle, WA 98115, USA

Received on April 18, 1989; accepted on October 28, 1989 A large ({small tilde}30 × 75 km) patch of larval walleye pollock, Theragra chalcogramma, was located south of the Alaska Peninsula during May 1986. A drifter deployed in this patch followed an anticyclonic path consistent with dynamic topography. Changes in community composition and vertical distribution of microzooplankton >40 µm were sampled for 4 days alongside this drifter to examine feeding conditions for larvae. Biological and physical changes during the first 2 calm days revealed substantial small-scale variability within the larger circulation pattern. Changes during the last 2 days were dominated by vertical mixing due to strong winds. Despite mixing, prey concentrations remained adequate for feeding by larval pollock as determined by laboratory studies. A satellite-tracked drifter replaced the first drifter and was still located within the patch 6 days later. Overall distributions of larvae and movements of the drifters show a net translation of 7.8 km day–1 south-westward, but details of the study reveal complex interactions between coastal waters and a coastal current. During the 10-day period there was an increase in standard length of the larval fish population of 0.13 mm day–1 and a decline in abundance of {small tilde}7.6% day–1. Both calculated rates must be underestimates due to continuing recruitment of small larvae from hatching eggs.


Add to CiteULike CiteULike   Add to Connotea Connotea   Add to Del.icio.us Del.icio.us    What's this?




Disclaimer:
Please note that abstracts for content published before 1996 were created through digital scanning and may therefore not exactly replicate the text of the original print issues. All efforts have been made to ensure accuracy, but the Publisher will not be held responsible for any remaining inaccuracies. If you require any further clarification, please contact our Customer Services Department.