Journal
ICES JOURNAL OF MARINE SCIENCE
Volume 69, Issue 10, Pages 1744-1752Publisher
OXFORD UNIV PRESS
DOI: 10.1093/icesjms/fss137
Keywords
advective transport; biophysical model; cod eggs; dispersal; Gadus morhua; mortality; recruitment; retention; yolk-sac larvae
Categories
Funding
- International Femern Belt Science Provision Contract
- EU FP7 project VECTORS [266445]
Ask authors/readers for more resources
To disentangle the effects of different drivers on recruitment variability of marine fish, a spatially and temporally explicit understanding of both the spawning stock size and the early life stage dynamics is required. The objectives of this study are to assess the transport of western Baltic cod early life stages as well as the variability in environmentally-mediated survival along drift routes in relation to both spatial (within and between different spawning areas) and temporal (interannual and seasonal) dynamics. A spatially and temporally highly-resolved biophysical model of the Baltic Sea was used to describe mortalities and survival success of eggs and yolk-sac larvae-represented by individual, virtual drifters-as predicted proportions of drifters that either died due to bottom contact or lethal temperatures, or that survived up to the end of the yolk-sac larval stage. The environmental conditions allowing survival of cod and yolk-sac larvae indicate that favourable conditions predominately occurred during the late spawning season, while minimum survival rates could be expected from January to March. The spatial analysis of different spawning areas revealed highest survival chances in the Kattegat, intermediate survival in the Great Belt, and only low survival in the Sound, Kiel Bay and Mecklenburg Bay.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available