Fishery bulletin of the Fish and Wildlife Service - NOAA

More documents

Recommendations

Info

SALMON RUNS OF THE COLUMBIA RIVER IN 1938 121 TABLE 12.—Chinook salmon run in the Columbia River, 1938 [ Catch ш number of flsh estimated from weekly average weights, as determined from the 1939 run. Data combined and arranged by corresponding weeks] Feb 19 Feb. 26 Mar. 5 Mar. 12 Mar. 19 Mar 28 Apr. 2 Apr. 9 Apr. 16 Apr. 23 Apr 30 May 7 May 14 May 21 May 28 June 18 Week ending July 2 July 9 July 16 -. .. July 23 July 30 Aug. 13 Aug 20 Aug 27 Sept. 3 Sept 10 Sept. 17 Sept 24 Oct 1 Oct. 8 Oct 15 Oct 22 Oct 29 Nov. 5 Nov 12 Nov. 19 Nov. 26 Dec 3 Dec. 10 Dec. 17 Total Zones 1 and 2 43, 143 16, 691 8,000 4,132 2,597 3,912 5,261 7,438 6,856 10,771 8,923 9,402 16, 277 28,272 54,426 65, 145 47,768 13, 620 12 976 2 612 993 1 366 857 436 214 68 13 11 1 4 1 370, 074 Zones 3 to 5 26,003 11, 709 1,724 621 36 39 263 632 676 1,258 1,665 1,481 1,768 1,086 2,891 4,024 4,312 8,942 9,069 933 436 336 287 166 110 41 163 80, 416 Total catch below Bonnevllle 26,003 64,852 17, 415 8,621 4,168 2,036 4,175 5,893 8,114 8,114 12, 336 10, 404 11,160 16, 363 31, 163 58,449 69, 467 47,758 8,942 22,589 13 909 3,048 1,329 1 663 1,022 645 255 84 16 11 1 4 1 450,490 Bonnevillo estimate and count 4 68 84 0 14 339 402 484 1,645 3,359 12 936 6,097 3,827 205 1,981 2,932 2,230 1,240 884 1,866 1,534 1,753 1,327 4,163 6,104 10, 112 53, 753 80, 693 63,224 12, 258 2,057 994 489 161 234 208 47 29 g6 212 2 277, 665 Catch above Bonnevillo 1,386 3 163 1 395 469 248 360 213 186 81 46 40 96 70 213 542 1,463 1,377 30, 109 15, 916 4,806 2 908 991 264 247 62 1 66,641 Total catch 1,386 29 156 66,247 17,884 8,869 4,528 3,849 1 361 6,974 8,160 8,154 12, 432 10, 474 11, 373 16, 905 32, 626 59, 826 69, 457 47, 758 30,109 24, 867 27, 395 16 817 4 039 1,693 1 900 1 084 645 255 85 16 11 1 4 1 617, 131 Rock Island count TABLE 13.—Catch and escapement of chinook salmon by selected and corresponding periods Period To ndincludin A r 16 Apr 17-May 28 May 29-July 30 July 31-Aug. 27 ... July 31-Dec. 17 Total ' Catch below Bonneville ï Eliminating duplication in the last 2 periods. Apr 17-May 28 May 29-July 30 July 31- Aug 27 July 31-Dec. 17 Period None 111,069 79, 195 206,827 260,236 450,490 Bonneville count 2,940 27, 405 17, 918 149, 662 229, 402 277,665 Catch above Bonneville None 7,011 1,487 2,840 58,143 66,641 Total catch None 118,070 80 682 209, 667 318, 379 617, 131 TABLE 14.—Significant ratios between elements of the chinook run Total catch to escapement 6.79 4.91 1.43 1.86 14 28 70 78 650 236 195 69 94 120 39 77 450 726 383 419 196 82 162 171 209 515 344 344 111 8 18 6,803 Estimated escapement past Celilo 2,940 20, 394 16, 431 146, 822 171,259 211, 024 Catch below Bonneville to — Catch above Bonneville to- Total catch 0.941 .981 .986 .818 Bonneville count 4.06 4.42 1.38 1.13 Total catch 0.059 .018 .014 .182 Bonneville count 0.256 .083 .019 .253 Total run 4 68 84 0 14 339 402 484 1,646 3 359 38 939 59 949 21,242 8,826 6,149 5,568 6,405 7,133 8,998 9,969 13, 870 12, 157 12, 487 20,526 36, 267 68,661 123 210 128 451 63,224 21 200 24 646 14,903 3 537 1,490 1 887 1 230 692 284 93 21 32 343 728, 155 Bock Island count 112 1,321 2,491 1,067 1,879 5,803 Rock Island count to escapement 0.065 .152 .007 .011
122 FISHERY BULLETIN OF THE FISH AND WILDLIFE SERVICE For the season prior to April 16 there was, of course, no catch; the estimated escapement was 2,940, and the corresponding count at Rock Island was 112. The percentage of the run going to the upper Columbia River was, therefore, 3.8. (All of these statements and other similar ones to follow are approximations that are affected by errors in the data and in the various assumptions involved. We believe, however, that neither the data nor the assumptions are seriously in error so that these are valid approximations.) During the period from April 17 to May 28, the period when the first conspicuous peak of the run occurred, the catch amounted to over 1,681,000 pounds (table 1), estimated as representing approximately 118,000 fish. The Bonneville count was 27,400, the catch above Bonneville 7,000, and the estimated escapement 20,400. The Rock Island count was 1,321. The ratio of catch to escapement (catch divided by escapement) is 5.8:1—in other words, it is estimated that 5.8 fish are caught for every one that escapes and is available for reproduction. The percentage of the entire escapement that went to Rock Island was 6.5. The catch that may be attributed to the Rock Island contingent in the run is, therefore, 6.5 percent of 118,000 fish, about 7,650. An estimate of the poundage derived from the Rock Island run during this period may also be had by taking 6.5 percent of the total weight of chinooks in the catch made in the corresponding periods on the lower river. (This includes the catch of the first 4 weeks in Zones 1 and 2, of the first 5 weeks in Zones 3 to 5, and of the first 6 weeks in Zone 6.) The estimate of the poundage derived from the Rock Island run is, therefore, 109,000 Ibs. (6.5 percent of 1,681,000 pounds). For the period from May 29 to July 30, the total catch was 2,242,000 pounds, representing an estimated 80,700 fish. The Bonneville count was only 17,900. The catch above Bonneville amounted to some 1,500 fish, leaving an estimated escapement of 16,400. The Rock Island count was 2,491. The ratio of catch to escapement is 4.9:1—approximately 5 fish are captured for every one that escapes. The Rock Island count was 15.2 percent of the estimated escapement. The catch that may be attributed to the Rock Island run, therefore, is 12,300 fish of an aggregate weight of 341,000 pounds. It is to be noted especially that the Rock Island portion of the run during this period constitutes over 15 percent of the total and that this is the period during which the run is slack and the catch relatively poor. It is well known that this condition exists each year and it is the general opinion that the populations that characterize this period are the most seriously depleted of any. Certainly it is evident that they are without adequate protection at the present time. By far the greater part of the fish taken in the commercial fishery during these weeks is of high quality and produces the finest of the Columbia River pack. The preservation of so important a part of the run is obviously a matter of the highest importance. This part of the run will be considered m more detail below. The run from July 31 to August 27 provides a large part of the total catch of the spring season, but the contribution made by the Rock Island runs is relatively small. The total catch for this period during 1938 was 5,640,000 pounds, representing about 207,000 fish. The Bonneville count was approximately 149,600, and the catch above Bonneville was 2,800, giving an estimated escapement of 147,000. The ratio of catch to escapement during this period was, therefore, only 1.4:1, which was undoubtedly reduced by the increased escapement during the last 2 days of the period after the fishing season closed on August 25. The Rock Island count was 1,057, which
Page 1 and 2:
UNITED STATES DEPARTMENT OF THE INT
Page 3 and 4:
UNITED STATES DEPARTMENT OP THE INT
Page 5 and 6:
ABSTRACT The results of an investig
Page 7 and 8:
2 FISHERY BULLETIN OF THE FISH AND
Page 9 and 10:
Page 11 and 12:
Page 13 and 14:
Page 15 and 16:
Page 17 and 18:
Page 19 and 20:
14 FISHEBY BULLETIN OF THE FISH AND
Page 21 and 22:
Page 23 and 24:
Page 25 and 26:
20 FISHERY BULLETIN OF THE FISH AKD
Page 27 and 28:
Fish and Wildlife Service, Fishery
Page 29 and 30:
Page 31 and 32:
Page 33 and 34:
Page 35 and 36:
Page 37 and 38:
Page 39 and 40:
32 FISHEKY BULLETIN OF THE FISH AND
Page 41 and 42:
FISHERY BULLETIN OF THE FISH AND WI
Page 43 and 44:
Page 45 and 46:
Page 47 and 48:
Page 49 and 50:
Page 51 and 52:
Page 53 and 54:
Page 55 and 56:
Page 57 and 58:
Page 59 and 60:
Page 61 and 62:
Page 63 and 64:
Page 65 and 66:
Page 67 and 68:
Page 69 and 70:
Page 71 and 72:
Page 73 and 74:
Page 75 and 76:
68 Centime tf гз 28 3l ,.-.-- 32
Page 77 and 78:
Page 79 and 80:
72 TABLE 18.- FISHERY BULLETIN OF T
Page 81 and 82: 74 FISHERY BULLETIN OF THE FISH AND
Page 85 and 86: Blank page retained for pagination
Page 87 and 88: ABSTRACT Plankton collections made
Page 93 and 94: 84 FISHERY BULLETIN OP THE FISH AND
Page 101 and 102: 92 FISHERY BTTLLETIN OF THE FISH AN
Page 107 and 108: 98 FIBHEBY BULLETIN OP THE FISH AND
Page 109 and 110: 100 FISHERY BULLETIN OF THE FISH AN
Page 111 and 112: 102 FISHERY BULLETIN OP THE FISH AN
Page 113 and 114: ABSTRACT T7XCEPTIONAL DATA are avai
Page 121 and 122: 110 FISHEBY BULLETIN OF THE FISH AN
Page 125 and 126: 114 FISHERY. BULLETIN OF THE FISH A
Page 129 and 130: 118 FISHEBY BULLETIN OP THE FISH AN
Page 131: 120 FISHEHY BULLETIN OF THE FISH AN
Page 139 and 140: 128 FISHEEY BULLETIN OF THE FISH AN
Page 147 and 148: 136 FISHEKY BULLETIN OP THE FISH AN
Page 159 and 160: Blank page retained for pagination
Page 161 and 162: ABSTRACT This portion of a comprehe
Page 165 and 166: 152 FISHERY BULLETIN JOF THE FISH A
Page 181 and 182: 168 FI8HEET BULLETIN OF THE FISH AN
Page 183 and 184:
170 FISHERY BULLETIN OF THE FISH AN
Page 185 and 186:
Page 187 and 188:
Page 189 and 190:
Page 191 and 192:
178 FISHERY BULLETIN OP THE PISH AN
Page 193 and 194:
Page 195 and 196:
Page 197 and 198:
184 FISHERY BULLETIN OP THE FISH AN
Page 199 and 200:
Page 201 and 202:
188 FISHERY BULLETIN OP THE PISH AN
Page 203 and 204:
Page 205 and 206:
Page 207 and 208:
Page 209 and 210:
196 FISHERY BULLETIN OP THE FISH AN
Page 211 and 212:
Page 213 and 214:
200 FISHEBY BULLETIN OP THE FISH AN
Page 215 and 216:
202 FISHEBY BULLETIN OF THE FISH AN
Page 217 and 218:
Page 219 and 220:
206 FISHEET BULLETIN OP THE FISH AN
Page 221 and 222:
Page 223 and 224:
210 FISHERY BULLETIN OF THE PISH AN
Page 225 and 226:
212 FISHEBY BULLETIN OF THE FISH AN
Page 227 and 228:
Page 229 and 230:
Page 231 and 232:
218 FISHEKY BULLETIN OF THE FISH AN
Page 233 and 234:
Page 235 and 236:
Page 237 and 238:
Page 239 and 240:
Page 241 and 242:
Page 243 and 244:
Page 245 and 246:
Page 247 and 248:
Page 249 and 250:
Page 251 and 252:
Page 253 and 254:
FLUCTUATIONS IN ABUNDANCE OF RED SA
Page 255 and 256:
FISHERY BULLETIN OP THE CTBH AND WI
Page 257 and 258:
Page 259 and 260:
Page 261 and 262:
Page 263 and 264:
FISHEKY BULLETIN OP THE FISH AND WI
Page 265 and 266:
Page 267 and 268:
Page 269 and 270:
Page 271 and 272:
Page 273 and 274:
Page 275 and 276:
Page 277 and 278:
FISHEBY BULLETIN OF THE FISH AND WI
Page 279 and 280:
FISHEltY BULLETIN OF THE FISH AND W
Page 281 and 282:
Cold Creek« Spring Creek Moraine C
Page 283 and 284:
Page 285 and 286:
Page 287 and 288:
FISHERY BULLETIN OP THE FISH AND WI
Page 289 and 290:
Page 291 and 292:
Page 293 and 294:
Page 295 and 296:
Page 297 and 298:
Page 299 and 300:
Page 301 and 302:
1 2 3 4 . 1 2 3 4 Age of seaward mi
Page 303 and 304:
Page 305 and 306:
Page 307 and 308:
Page 309 and 310:
Page 311 and 312:
Page 313 and 314:
Page 315 and 316:
THE WHITEFISH FISHERY OF LAKES HURO
Page 317 and 318:
WHITEFISH FISHERY OF LAKES HURON AN
Page 319 and 320:
Page 321 and 322:
WHITEPISH FISHERY OF LAKES HURON AN
Page 323 and 324:
Page 325 and 326:
Page 327 and 328:
Page 329 and 330:
PART II FLUCTUATIONS IN THE PRODUCT
Page 331 and 332:
Page 333 and 334:
WHITEFISH FISHERY OF LAKES HUKON AN
Page 335 and 336:
Page 337 and 338:
Page 339 and 340:
Page 341 and 342:
Page 343 and 344:
Page 345 and 346:
Page 347 and 348:
Page 349 and 350:
Page 351 and 352:
Page 353 and 354:
Page 355 and 356:
Page 357 and 358:
Page 359 and 360:
Page 361 and 362:
. * - гоо WHITEFISH FISHERY OF L
Page 363 and 364:
Page 365 and 366:
Page 367 and 368:
Page 369 and 370:
WHITEFI8H>FISHEBY OF LAKES HURON AN
Page 371 and 372:
WHITEFISH FISHERY OF LAKES HUEON AN
Page 373 and 374:
Page 375 and 376:
Page 377 and 378:
Page 379 and 380:
Page 381 and 382:
Page 383 and 384:
PART IV OBSERVATIONS ON THE FISHING
Page 385 and 386:
WHITEÏ4SH FISHERY OF- LAKES HURON
Page 387 and 388:
Page 389 and 390:
Page 391 and 392:
Page 393 and 394:
Page 395 and 396:
Page 397 and 398:
Page 399 and 400:
WHITEFISH FISHERY OF LAKES HUBON AN
Page 401 and 402:
TVHITEFISH FISHERY OF LAKES HURON A
Page 403 and 404:
Page 405 and 406:
Page 407 and 408:
Page 409 and 410:
Page 411 and 412:
WHITEPISH FISHERY OF LAKES HURON AN
show all

Fishery bulletin of the Fish and Wildlife Service - NOAA

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?