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

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MEMORANDUM DATE: November 11, 2004 TO: FROM: RE: CC: Robin Reich, HDR Alaska, Inc. Jon Houghton, Jim Starkes, Pentec Environmental Summary of October Sampling Activities – Knik Arm, Alaska 12214-10/12618-01 Diana Brake, ICRC Intertidal and littoral habitats in Knik Arm were sampled during the period of October 20 to 23, 2004. Fish samples were collected by beach seine at the following nine stations: Station 13 at Point Woronzof Station 16 East of Point MacKenzie Station 14 East of Port MacKenzie Station 11 at Cairn Point Station 11A south of Cairn Point near the northern boundary of the Port of Anchorage Station 7A Southwest of Eagle Bay Station 10 South of Goose Creek Station PS1 Port of Anchorage property landward of the Port Offices, south of Trestle No. 1 Station PS2 Port of Anchorage property, south of fuel dock POL-2 A Division of Hart Crowser, Inc. 120 Third Avenue South, Suite 110 Edmonds, Washington 98020-8411 Fax 425.778.9417 Tel 425.775.4682
HDR Alaska, Inc. 12214-10 November 11, 2004 Page 2 Stations 10, 11, and 13 corresponded to those areas sampled in 1983 for the Knik Arm Marine Studies Report. Two beach seine sets were made at each station. Table 1 lists all species/life history stages of fish captured. Table 1 - Fish Species Captured in October Beach Seining KABATA Stations Port Stations 16 14 10 7A 11 13 11A PS1 PS2 Chinook salmon Juvenile X Adult Coho salmon Juvenile X X Adult Chum salmon Juvenile Adult Pink salmon Juvenile Adult Sockeye salmon Juvenile X X X X Adult Threespine stickleback X X X X X X Ninespine stickleback X X X X X X X X Saffron cod X X X X X X X X X Bering Cisco Longfin smelt X X X X X X X X Pacific herring X X X X X X Clingfish (Liparidae) X X X X X X Starry flounder X The composition and abundance of fish in beach seine catches had shifted relative to the summer sampling events. Juvenile salmonids were no longer abundant, and of those observed, most were small sockeye between 53 and 63 mm fork length. The dominant species was larval longfin smelt, which were observed at all but one station. Most of these fish were transparent, measuring between about 50 and 75 mm fork length, and were quite abundant at some of the stations. Adult smelt up to 160 mm were also observed at most
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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
Page 89 and 90: Water Quality of Knik Arm, 2004 - 2
Page 91 and 92: Juvenile Salmonid CPUE over Time; 1
Page 93 and 94: 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: HDR Alaska, Inc. 12214-10 October 6
Page 143 and 144: MEMORANDUM DATE: November 22, 2004
Page 145 and 146: HDR Alaska, Inc./Integrated Concept
Page 147 and 148: MEMORANDUM DATE: May 13, 2005 TO: F
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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