Identifying eastern Baltic cod nursery grounds using hydrodynamic modelling: knowledge for the design of Marine Protected Areas

被引:36
作者
Hinrichsen, Hans-Harald [1 ]
Kraus, Gerd [2 ]
Bottcher, Uwe [4 ]
Koster, Fritz [3 ]
机构
[1] Leibniz Inst Marine Sci, D-24105 Kiel, Germany
[2] Inst Sea Fisheries, D-22767 Hamburg, Germany
[3] Tech Univ Denmark, Natl Inst Aquat Resources, DK-2920 Charlottenlund, Denmark
[4] Inst Balt Sea Fisheries, D-18069 Rostock, Germany
关键词
eastern Baltic cod; gadoid settlement; larval transport; nursery areas; EARLY-LIFE STAGES; GADUS-MORHUA; BORNHOLM BASIN; SPAWNING ENVIRONMENT; EGG BUOYANCY; ATLANTIC COD; HETEROGENEITY; RECRUITMENT; IMPACT; GROWTH;
D O I
10.1093/icesjms/fsn207
中图分类号
S9 [水产、渔业];
学科分类号
0908 ;
摘要
Knowledge of the spatial and temporal distribution of juvenile cod is essential to closing the life cycle in population dynamic models, and it is a prerequisite for the design of Marine Protected Areas (MPAs) aiming at the protection of juveniles. In this study, we use a hydrodynamic model to examine the spatial distribution of eastern Baltic cod larvae and early juveniles. The transport patterns of the larvae spawned at the three major spawning grounds in the central Baltic Sea were investigated by drift model simulations for the period 1979-2004. We analysed potential habitats for their suitability for juvenile settlement, i.e. the change from pelagic to demersal life. The results revealed a clear dependence of the probability for successful settling on wind-induced drift of larval cod, which is controlled by the local atmospheric conditions over the Baltic Sea. Furthermore, we found evidence that the final destinations of juvenile cod drift routes are affected by decadal climate variability. Application of the methodology to MPA design is discussed, e. g. identifying the overlap of areas with a high probability of successful juvenile cod settlement and regions of high fishing effort in small-meshed fisheries targeting sprat and herring.
引用
收藏
页码:101 / 108
页数:8
相关论文
共 36 条
[31]   Maternal effects on egg size and egg buoyancy of Baltic cod, Gadus morhua -: Implications for stock structure effects on recruitment [J].
Vallin, L ;
Nissling, A .
FISHERIES RESEARCH, 2000, 49 (01) :21-37
[32]   Variations in the drift of larval cod (Gadus morhua L.) in the Baltic Sea:: combining field observations and modelling [J].
Voss, R ;
Hinrichsen, HH ;
St John, M .
FISHERIES OCEANOGRAPHY, 1999, 8 (03) :199-211
[33]   EFFECTS OF SALINITY ON SPERMATOZOA MOTILITY, PERCENTAGE OF FERTILIZED-EGGS AND EGG DEVELOPMENT OF BALTIC COD (GADUS-MORHUA), AND IMPLICATIONS FOR COD STOCK FLUCTUATIONS IN THE BALTIC [J].
WESTIN, L ;
NISSLING, A .
MARINE BIOLOGY, 1991, 108 (01) :5-9
[34]   Changes in the timing of spawning of Baltic cod: possible causes and implications for recruitment [J].
Wieland, K ;
Jarre-Teichmann, A ;
Horbowa, K .
ICES JOURNAL OF MARINE SCIENCE, 2000, 57 (02) :452-464
[35]  
Wieland Kai, 1994, Dana, V10, P163
[36]  
WULFF F, 1990, AMBIO, V19, P126