51. Length- weight observations from flathead sole taken during the 1976 Bering Sea spring trawl 



survey 73 



52. Von Bertalanffy growth curves for male and female flathead sole, 1976 Bering Sea spring trawl 



survey 74 



53. Distribution and relative abundance of Pacific cod during the 1976 Bering Sea spring trawl survey 75 



54. Size composition of Pacific cod taken during the 1976 Bering Sea spring trawl survey 77 



55. Relative age composition of Pacific cod taken during the 1976 Bering Sea spring trawl survey 78 



56. Length-weight observations from Pacific cod taken during the 1976 Bering Sea spring trawl survey 80 



57. Von Bertalanffy growth curves for male and female Pacific cod, 1976 Bering Sea spring trawl survey 81 



58. Distribution and relative abundance of Alaska plaice during the 1976 Bering Sea spring trawl survey, April and 



May 83 



59. Distribution and relative abundance of Alaska plaice during the 1976 Bering Sea spring trawl survey, June and 

 July-August 84 



60. Size composition of Alaska plaice taken during the 1976 Bering Sea spring trawl survey 85 



61 . Relative age composition of Alaska plaice taken during the 1976 Bering Sea spring trawl survey 87 



62. Length- weight observations from Alaska plaice taken during the 1976 Bering Sea spring trawl survey 88 



63. Mean lengths-at-age of Alaska plaice taken during the 1976 Bering Sea spring trawl survey 89 



64. Distribution and relative abundance of Greenland turbot during the 1976 Bering Sea spring trawl survey 91 



65. Size composition of Greenland turbot taken during the 1976 Bering Sea spring trawl survey 92 



66. Relative age composition of Greenland turbot taken during the 1976 Bering Sea spring trawl survey 95 



67. Length-weight observations from Greenland turbot taken during the 1976 Bering Sea spring trawl survey 96 



68. Von Bertalanffy growth curves for male and female Greenland turbot, all areas, 1976 Bering Sea spring trawl 



survey 97 



69. Distribution and relative abundance of arrowtooth flounder during the 1976 Bering Sea spring trawl survey. ... 98 



70. Size composition of arrowtooth flounder taken during the 1976 Bering Sea spring trawl survey 99 



71. Relative age composition of arrowtooth flounder taken during the 1976 Bering Sea spring trawl survey 100 



72. Length-weight observations from arrowtooth flounder taken during the 1976 Bering Sea spring trawl survey. ... 102 



73. Von Bertalanffy growth curves for arrowtooth flounder taken during the 1976 Bering Sea spring trawl survey, 

 comparing results of the all ages and selected ages data sets 103 



74. Distribution of catch rates of Pacific halibut during the 1976 Bering Sea spring trawl survey 105 



75. Size composition of Pacific halibut taken during the 1976 Bering Sea spring trawl survey 106 



76. Distribution of catch rates of longhead dab during the 1976 Bering Sea spring trawl survey 107 



77. Size composition of longhead dab taken during the 1976 Bering Sea spring trawl survey 108 



78. Distribution of catch rates of Pacific herring during the 1976 Bering Sea spring trawl survey 109 



79. The annual circuit of migration Ill 



80. Climatic conditions in the southeastern Bering Sea 1966-77 Ill 



81. Ice cover observed during spring 1 976 compared to long-term ( 1 954-70) extremes 113 



82. Comparison between the apparent distributions and relative abundance of walleye pollock in the Bering Sea, 



1975 and 1976 surveys 115 



83. Comparison between the apparent distributions and relative abundance of yellowfin sole in the Bering Sea, 1975 



and April 1976 117 



84. Comparison between the apparent distributions and relative abundance of yellowfin sole in the Bering Sea, May 



and June 1976 118 



85. Comparison between the apparent distributions and relative abundance of rock sole in the Bering Sea, 1975 and 



1976 surveys 119 



86. Comparison between the apparent distributions and relative abundance of flathead sole in the Bering Sea, 1975 



and 1976 surveys 120 



87. Comparison between the apparent distributions and relative abundance of Pacific cod in the Bering Sea, 1975 



and 1976 surveys 122 



88. Comparison between the apparent distributions and relative abundance of Alaska plaice in the Bering Sea, 1975 



and April 1976 123 



89. Comparison between the apparent distributions and relative abundance of Alaska plaice in the Bering Sea, May 



and June 1976 124 



90. Comparison between the apparent distributions and relative abundance of Greenland turbot in the Bering Sea, 



1975 and 1976 surveys 125 



91 . Comparison between the apparent distributions and relative abundance of arrowtooth flounder in the Bering 



Sea, 1975 and 1976 surveys 126 



92. Comparison between the apparent distributions and relative abundance of Pacific halibut in the Bering Sea, 



1975 and 1976 surveys 127 



Tables 



1. Geographical areas of statistical subdivisions used in the Bering Sea during the 1976 spring trawl survey 5 



