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Biological indicators of the timing and direction of warm-water advection during the 1997/1998 El Niño off the central Oregon coast, USA

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Title Biological indicators of the timing and direction of warm-water advection during the 1997/1998 El Niño off the central Oregon coast, USA
Names Keister, Julie E. (creator)
Johnson, Travis B. (creator)
Morgan, Cheryl A. (creator)
Peterson, William T. (creator)
Date Issued 2005-06-23 (iso8601)
Note The published version of this article is copyrighted by Inter-Research and can be found here:
http://www.int-res.com/journals/meps/meps-home/
Abstract Unusual collections of several euphausiid, chaetognath, and copepod species help elucidate
the effects of the strong 1997/1998 El Niño off the central Oregon, USA, coast. Furcilia of Nyctiphanes simplex, a euphausiid typically found only as far north as central California, were collected in bi-weekly nearshore samples between December 1997 and November 1998. N. simplex was reported in summer 1998 as far north as the northern tip of Vancouver Island, British Columbia, Canada (51° N); our bi-weekly collections off Oregon allow us to use that species to help resolve the timing of arrival and disappearance of the biological signal of the El Niño, which was delayed by several months beyond the physical signal. Additionally, 2 species of euphausiid (Euphausia recurva and E. mutica), 2 species of chaetognath (Sagitta pseudoserratodentata and S. hexaptera), and 1 copepod (Centropages bradyi) that have never before been reported in coastal Oregon waters were collected in samples taken between 28 and 103 km off Oregon during the 1997/1998 El Niño. The 1997/1998 El Niño was one of the strongest on record and the occurrence of the unusual species may indicate
the extent of the northward and onshore advection of warm water into the study area.
Genre Article
Topic Nyctiphanes simplex
Identifier Keister, J. E., Johnson, T. B., Morgan, C. A., & Peterson, W. T. (2005, June 23). Biological indicators of the timing and direction of warm-water advection during the 1997/1998 El Niño off the central Oregon coast, USA. Marine Ecology Progress Series, 295, 43-48.

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