. The Eastern Bering Sea Shelf : oceanography and resources / edited by Donald W. Hood and John A. Calder. Oceanography Bering 580 Fisheries oceanography TABLE 35-3 Inclusive dates of peak abundance of maturing Pacific salmon on the Bering Sea shelf during spawning migration (from commercial fishery and test fishing catches and migration rates). Sockeye Chum Pink Chinook Coho (summer) (fall) Estimated at shelf edge* Estuaries or river entrances: Alaska Peninsula'' Bristol Bay<i Kuskokwim Bay" Yukon River'' Norton Sound' Kotzebue Sound' 15 Jun-25 Jun 20 Jun-25 Aug'' 30 Jun-lO Jul
. The Eastern Bering Sea Shelf : oceanography and resources / edited by Donald W. Hood and John A. Calder. Oceanography Bering 580 Fisheries oceanography TABLE 35-3 Inclusive dates of peak abundance of maturing Pacific salmon on the Bering Sea shelf during spawning migration (from commercial fishery and test fishing catches and migration rates). Sockeye Chum Pink Chinook Coho (summer) (fall) Estimated at shelf edge* Estuaries or river entrances: Alaska Peninsula'' Bristol Bay<i Kuskokwim Bay" Yukon River'' Norton Sound' Kotzebue Sound' 15 Jun-25 Jun 20 Jun-25 Aug'' 30 Jun-lO Jul 17 Jun-5 Jul 22 Jun-13 Jul 4 Jul-25 Jul 25 Jun-15 Jul 11 Jun-9 Jul 30 Jun-16 Jul 20 Jul-20 Aug g g 24 Jul-10 Aug g 1 Aug-20 Aug 5 Jul-15 Jul 1 Aug-15 Aug 20 Jul-30 Jul g 15 Jul-10 Aug 3 Jul-25 Jul 30 May-19 Jun 1 Jun-20 Jun 10 Jun-30 Jun 10 Jun-30 Jun 13 Jun-28 Jun 10 Jun-30 Jun 20 Jul-2 Aug 10 Aug-10 Sep 1 Aug-20 Aug 25 Jul-15 Aug 9 Aug-29 Aug 3 Aug-25 Aug ^Estimated dates are for Bristol Bay salmon only. Dates are based on migration rates of 45 km/day for sockeye and pink salmon, 56 km/day for chum and coho salmon, and 60 km/day for chinook salmon during the last 30 days of spawning migration. A travel distance of 680 nautical miles from shelf edge to the head of Bristol Bay (the mouth of the Kvichak River) was used in these calculations. The 2,000 m isobath in the vicinity of the heaviest concentration of a salmon spe- cies was delineated as the "shelf ; ''A. R. Shaul, Alaska Department of Fish and Game, Cold Bay, Alaska, personal communication, 1979. Dates are based on commercial fishery catches. '^There are two types of sockeye salmon spawning migrations to river systems of the northern Alaska Peninsula, , those that reach peak abundance in the fish- ery in a short period of time between 25 June and 10 July, and those that occur over a long period of time between 20 June and 25 August with no definable peak period of abundance. A. R. Shaul, Alaska Depart
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