TY  - JOUR
AB  - We studied the population dynamics of Calanus finmarchicus, Calanus glacialis and Calanus hyperboreus in Billefjorden, Svalbard (78°40′N). All three species reproduced in the fjord with different timing. The maximum abundance of Calanus spp. copepodite stages peaked on the 11th of July (29,000 ind m<sup>−2</sup>). C. glacialis was the dominant species accounting for 60–80% of the total Calanus abundance. C. finmarchicus appear to thrive in the fjord despite the low temperatures (−1.86°C to 5°C) and accounted for 20–30% of the total population. C. hyperboreus contributed less to the total abundance (5–20%). A 1-year life cycle is suggested for C. finmarchicus and C. hyperboreus in the fjord, C. glacialis has a 1- to 2-year life cycle. Highest mortality rates were observed for copepodite stage CV in C. finmarchicus and C. glacialis (0.09 and 0.075 d<sup>−1</sup>, respectively) and for females in C. hyperboreus (0.149 d<sup>−1</sup>). Mortality of copepodite stages was substantially lower in C. glacialis than in the other species. This is particularly obvious in the early and numerous copepodite stages (CI + CII) during the period of recruitment to these stages. This suggests that differences in secondary production in Arctic pelagic ecosystems are controlled partly by population loss rates.
A1  - Arnkvaern, G., M. Daase & K. Eiane
DO  - 10.1007/s00300-005-0715-8
JO  - Polar Biology
IS  - 7528-538.
SP  - (7):528
EP  - 538.
C1  - 28(7):528-538.
TI  - Dynamics of coexisting Calanus finmarchicus, Calanus glacialis and Calanus hyperboreus populations in a high-Arctic fjord.
UR  - http://www.marbef.org/data/aphia.php?p=sourcedetails&id=74223
VL  - 28
PY  - 2005
Y2  - 2026-04-14
ER  -