BEHAVIORAL-DIFFERENCES IN RELATION TO PYCNOCLINES DURING VERTICAL MIGRATION OF THE EUPHAUSIIDS MEGANYCTIPHANES-NORVEGICA (SARS,M.) AND THYSANOESSA-RASCHII (SARS,M.)

Authors
BERGSTROM B STROMBERG JO
Citation
B. Bergstrom et Jo. Stromberg, BEHAVIORAL-DIFFERENCES IN RELATION TO PYCNOCLINES DURING VERTICAL MIGRATION OF THE EUPHAUSIIDS MEGANYCTIPHANES-NORVEGICA (SARS,M.) AND THYSANOESSA-RASCHII (SARS,M.), Journal of plankton research, 19(2), 1997, pp. 255-261
Citations number
14
Categorie Soggetti
Marine & Freshwater Biology
Journal title
Journal of plankton research → ACNP
ISSN journal
01427873
Volume
19
Issue
2
Year of publication
1997
Pages
255 - 261
Database
ISI
SICI code
0142-7873(1997)19:2<255:BIRTPD>2.0.ZU;2-W
Abstract
An observation on differences in the vertical migration pattern betwee n Meganyctiphanes norvegica (M. Sars) and Thysanoessa raschii (M. Sars ) caused by the presence of a thermocline is reported. Generally, M.no rvegica did not migrate through a thermocline at 50-60 m depth while T .raschii did. This observation is discussed in the context of how the combination of differences in vertical migration and advection over si ll depth may affect the abundance of fjord stocks of these two euphaus iid species.