Skip to main content

IMIS

A new integrated search interface will become available in the next phase of marineinfo.org.
For the time being, please use IMIS to search available data

 

[ report an error in this record ]basket (0): add | show Print this page

Life-cycle strategies and seasonal migrations of oceanic copepods in the Irminger Sea
Gislason, A. (2003). Life-cycle strategies and seasonal migrations of oceanic copepods in the Irminger Sea. Hydrobiologia 503: 195-209. https://dx.doi.org/10.1023/B:HYDR.0000008498.87941.7d
In: Hydrobiologia. Springer: The Hague. ISSN 0018-8158; e-ISSN 1573-5117, more
Related to:
Gislason, A. (2003). Life-cycle strategies and seasonal migrations of oceanic copepods in the Irminger Sea, in: Jones, M.B. et al. Migrations and dispersal of marine organisms: Proceedings of the 37th European Marine Biology Symposium held in Reykjavik, Iceland, 5-9 August 2002. Developments in Hydrobiology, 174: pp. 195-209. https://dx.doi.org/10.1007/978-94-017-2276-6_21, more
Peer reviewed article  

Available in  Author 

Keywords
    Cells > Sexual cells > Eggs
    Marine/Coastal

Author  Top 
  • Gislason, A.

Abstract
    Abundance and seasonal vertical distribution of dominant zooplankters in the Irminger Sea was studied from data collected during four cruises between November 1996 and June 1997. In addition, egg production of Calanus finmarchicus was measured during winter, spring and summer 1996-2001. Five taxa constituted >95% of the copepod biomass, C. finmarchicus, Pareuchaeta norvegica, C. hyperboreus, Oithona spp. and Oncaea spp. A seasonal migration pattern was evident for C. finmarchicus, P. norvegica and Oithona spp.: from December to February, they inhabited the deeper layers, whereas, from April to June, they were most abundant in the upper layers. Oncaea spp. also stayed deep during winter and only a very limited part of the population rose to the surface during summer. C. hyperboreus remained deep from December to April, but had virtually disappeared in June. Reproduction of C. finmarchicus took place in May in the surface layers and was linked to the phytoplankton spring bloom. In contrast, reproduction of P. norvegica occurred at depth in February and was uncoupled with the spring bloom. C. hyperboreus did not reproduce in the Irminger Sea. Data on Oithona spp. and Oncaea spp. indicated that the former reproduced between April and June in the upper layers, whereas the latter reproduced year-round at depth. Thus, data on vertical distribution and seasonal stage composition suggested that the dominant copepods are separated, at least partly, at spatial and temporal scales with regard to overwintering and development.

All data in the Integrated Marine Information System (IMIS) is subject to the VLIZ privacy policy Top | Author