Marine Fish and Benthos Studies - Knik Arm Bridge and Toll Authority

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HDR Alaska, Inc./Integrated Concepts and Research Corporation 12214-10/12618-01 November 22, 2004 Page 4 Sampling attempts were terminated until November 16 when the crew re-mobilized after a period of several days of warmer temperatures. Again, it was necessary to have the Port clear ice from the ramp in order to launch boats, but there was much less floating ice and much less ice on the shorelines at potential sampling locations. Water temperatures in the Arm ranged from –0.2 o C to +0.3 o C. Sampling was possible at several stations, although not without some struggles with frozen beaches that tended to snag the nets and make footing uncertain. Of particular note was the set made at Station 10A (Station 10, again having too much floating ice to access): The bag (fine mesh portion of the net) contained a very large volume of a semi-frozen mud/plant fiber slurry, quite unlike anything hauled in before. This material made it impossible to find any invertebrates that may have been present, but two juvenile coho salmon, both 90 mm, were present. Coho were also taken at Station 16, just north of Point MacKenzie, along with several adult saffron cod. Falling tides and ice conditions prevented boat retrieval until about 10 pm, and the larger boat and trailer were damaged by ice during recovery. On November 17, road conditions, ice on the ramp, and poor visibility on the Arm delayed launching until 1100 hours. With a Beluga observer on board, we navigated to the north side of Eagle Bay (Station 5) with the intent of seining in areas known to be frequented by whales. Large chunks of ice along the shoreline prevented sampling. We then cruised south and east into Eagle Bay. The northern shore of the bay consists of a high and unstable bluff and a very steep beach, again with large amounts of moving ice, such that.seining could not be safely accomplished. A more gradual beach was found at the mouth of a small ravine and creek entering the north side of Eagle Bay. A set, carefully timed to avoid masses of moving ice was completed here (designated Station 5A), and yielded an adult saffron cod. Consistent presence of cod at several stations during the October and November sampling suggests that this species may comprise a primary food of belugas in the Arm after adult salmon runs have ended. Logistical difficulties and vessel and personnel safety concerns associated with winter sampling in the Arm may preclude further sampling until spring breakup. 00214\010\FieldSummaryMemo\NovemberFieldSummary(Rev).doc
MEMORANDUM DATE: May 13, 2005 TO: FROM: RE: CC: Robin Reich, HDR, Alaska, Inc. Jon Houghton, Jim Starkes, Pentec Environmental Summary of April Sampling Activities – Knik Arm, Alaska 12214-12 Kelly Barrett, Pentec Environmental Intertidal and littoral habitats in Knik Arm were sampled during the period of April 19 to 21, 2005. This period represented the first sampling event of the 2005 spring/summer sampling season in the Arm. The Arm was relatively free of ice during this period, although a few pieces were still observed in the water and piled within the upper intertidal zone. The presence of ice did not provide a significant impediment to sampling. Fish samples were collected by at the following eight stations: Station 11, Cairn Point North Station 11A, Cairn Point South Station 16, East of Point MacKenzie Station 14, South of Port MacKenzie Station 13, Point Woronzof Station 7, Southern edge of Eagle Bay Station 7A, Southwest of Eagle Bay Station 10 South of Goose Creek Each of the stations were sampled at least twice during the 3-day period. As with last years, late-summer to early winter sampling, all fish were captured and enumerated using a 120- A Division of Hart Crowser, Inc. 120 Third Avenue South, Suite 110 Edmonds, Washington 98020-8411 Fax 425.778.9417 Tel 425.775.4682
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Marine Fish and Benthos Studies in
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CONTENTS Page EXECUTIVE SUMMARY E-1
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CONTENTS (CONT.) FIGURES (CONT.) 14
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MARINE FISH AND BENTHOS STUDIES IN
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Among the non-salmonids, threespine
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The extreme turbidity and poor visi
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MARINE FISH AND BENTHOS STUDIES IN
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2.2 Sample Methods MacKenzie facili
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will conduct a fatty acid analysis
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2.3 Laboratory Analysis (Figure 3).
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Null hypotheses were tested using t
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3.2.3 KA 3 - North Entrance to Eagl
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3.2.10 KA 11 and KA 11A - Cairn Poi
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3.2.15 PM SS and PM S1 through PM S
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plus range) seen in July of both ye
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greater number of stations sampled)
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were common throughout the summer.
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3.3.2.5 Longfin Smelt 2004. Two-hun
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3.3.2.9 Tide Stage vs. Catch Beach
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(4.0 per set) followed by pink salm
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Ten species of fish were captured i
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species of polychaete worm, Neanthe
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3.4.4 Facilities Sampling 3.4.4.1 F
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flow meter reading to standardize t
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each seines in 2005. In summer/fall
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salmonid catches in Moulton’s (19
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(Figure 8), the larger size of the
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4.4 Knik Arm Ecological Conditions
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An apparent near absence of inverte
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4.4.4 Importance of Littoral Habita
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5.0 REFERENCES Bakus, G., M. Orys,
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Simenstad, C.A., C.D. Tanner, W.M.
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Table 1 - Knik Arm 2004 and 2005 Sa
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Table 3 - Total 2004 and 2005 Month
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Table 5 - Fish CPUE in 2004; 120-Fo
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Table 7 - Fish CPUE in 2005; 120-Fo
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Table 9 - Fish CPUE in 2005 as a Fu
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Table 11 - Total Fish CPUE by Tow N
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Table 13 - Total Catch and CPUE in
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Table 15 - Total Fish Catch in 2005
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Table 17 - Statistical Analyses of
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Table 19 - Total Catch and CPUE of
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Pentec Environmental 12214-12 Novem
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6-2 Knik Arm Crossing Tow Net Locat
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Water Quality of Knik Arm, 2004 - 2
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Juvenile Salmonid CPUE over Time; 1
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Length Frequencies of Juvenile Coho
Page 95 and 96: Length Frequencies of Juvenile Chum
Page 97 and 98: CPUE for Stickleback Species; 120-F
Page 99 and 100: CPUE for Saffron Cod and Longfin Sm
Page 101 and 102: Length Frequencies of Longfin Smelt
Page 103 and 104: Juvenile Salmonid CPUE over Time in
Page 105 and 106: Non-Salmonid CPUE over Time in Tow
Page 107 and 108: Length Frequencies of Sockeye Salmo
Page 109 and 110: Length Frequencies of Chinook Salmo
Page 111 and 112: Invertebrate CPUE by Species in 200
Page 113 and 114: Relationship of Tidal Stage and Inv
Page 115 and 116: Invertebrate CPUE by Transect in 20
Page 117 and 118: Invertebrate Monthly CPUE in Port M
Page 119 and 120: Invertebrate CPUE by Station; Port
Page 121 and 122: Pentec Environmental 12214-12 Photo
Page 131 and 132: MEMORANDUM DATE: August 13, 2004 TO
Page 133 and 134: HDR Alaska, Inc. 12214-10 August 13
Page 135 and 136: HDR Alaska, Inc. 12214-10 October 6
Page 137 and 138: MEMORANDUM DATE: October 6, 2004 TO
Page 139 and 140: HDR Alaska, Inc. 12214-10 October 6
Page 141 and 142: HDR Alaska, Inc. 12214-10 November
Page 143 and 144: MEMORANDUM DATE: November 22, 2004
Page 145: HDR Alaska, Inc./Integrated Concept
Page 149 and 150: HDR Alaska, Inc. 12214-12 May 13, 2
Page 155 and 156: MEMORANDUM DATE: July 8, 2005 TO: F
Page 157 and 158: HDR Alaska, Inc. 12214-12 July 8, 2
Page 159 and 160: MEMORANDUM DATE: August 10, 2005 TO
Page 165 and 166: APPENDIX B Invertebrate Data Sheet
Page 167 and 168: APPENDIX B Invertebrate Data Sheet
Page 169 and 170: Appendix B (cont.) Table B-2: Inver
Page 171 and 172: Appendix B (cont.) Table B-5: Stati
Page 173 and 174: Table C-1: Summary of CPUE by all G
Page 175: Table C-3 Summary of Catch and Perc
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Marine Fish and Benthos Studies - Knik Arm Bridge and Toll Authority

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