hays-longterm-1996.pdf (1.08 MB)
Long-term changes in the diel vertical migration behaviour of zooplankton
journal contribution
posted on 1996-10-03, 00:00 authored by Graeme HaysGraeme Hays, A Warner, D LefevreSamples historically collected and analysed by the Continuous Plankton Recorder survey were used to examine long-term (1958 to 1994) patterns in the normal diel vertical migration (NDVM) behaviour of 7 copepod taxa in the North Sea: Calanus finmarchicus C5-C6; Calanus spp. C1-C4; Centropages typicus; Centropages hamatus; Temora longicornis; Acartia clausii and Para-Pseudocalanus (this last group included all Paracalanus and Pseudocalanus species). The ratio of night:day abundance near the surface was used as a measure of the extent of NDVM. For all 7 taxa, the extent of NDVM between 1958 and 1994 co-varied with the abundance of herring Clupea harengus in the North Sea. Fisheries data show that during this period the herring stock was a good indicator of the overall abundance of planktivorous fish in the North Sea. These results suggest that changes in the abundance of planktivorous fish in the North Sea over recent decades have resulted in modifications in the NDVM behaviour of many zooplankton taxa.
History
Journal
Marine ecology progress seriesVolume
141Pagination
149 - 159Publisher
Inter-ResearchLocation
Oldendorf, GermanyISSN
0171-8630eISSN
1616-1599Language
engPublication classification
C1.1 Refereed article in a scholarly journalCopyright notice
1996, Inter-ResearchUsage metrics
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Keywords
zooplanktonDiel vertical migrationlong-term patternsNorth Seapredator evasionScience & TechnologyLife Sciences & BiomedicinePhysical SciencesEcologyMarine & Freshwater BiologyOceanographyEnvironmental Sciences & EcologyCONTINUOUS PLANKTON RECORDERNORTH-SEAADAPTIVE SIGNIFICANCECALANUS-PACIFICUSFISHCOPEPODSPREDATIONZoologyOceanographyEcology
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