共 43 条
Regime shifts and recruitment dynamics of snow crab, Chionoecetes opilio, in the eastern Bering Sea
被引:30
作者:
Szuwalski, Cody
[1
]
Punt, Andre E.
[1
]
机构:
[1] Univ Washington, Sch Aquat & Fishery Sci, Seattle, WA 98195 USA
关键词:
Chionoecetes opilio;
eastern Bering Sea;
recruitment;
regime shift;
snow crab;
POLLOCK THERAGRA-CHALCOGRAMMA;
NORTH PACIFIC;
MANAGEMENT STRATEGIES;
SPATIAL DYNAMICS;
CLIMATE;
ENVIRONMENT;
MODELS;
STRENGTH;
MATURITY;
MAJIDAE;
D O I:
10.1111/fog.12026
中图分类号:
S9 [水产、渔业];
学科分类号:
0908 ;
摘要:
Shifts in climate regime are prominent features of the physical environment of the eastern Bering Sea and in recent years have been documented in approximately 1977 and 1989. Average snow crab (Chionoecetes opilio) recruitment decreased sharply after the 1989 fertilization year. Models in which control of snow crab recruitment shifts between drivers dependent on climate regime' are presented. These models are evaluated using cross-validation and retrospective analysis, both of which indicate that the relationships are relatively robust to varying levels of information. Larval survival as influenced by food availability in the pelagic phase and advection to suitable nursery grounds are the hypothesized mechanisms driving recruitment dynamics.
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页码:345 / 354
页数:10
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