Nearshore Habitat Use by Juvenile Chinook Salmon in Lentic ...

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c Chinook / 100m . 500 400 300 200 100 ab a ab bc 0 Beach (10) Bedrock (3) Emergent (9) LWD (6) Trib mouth (7) Chinook / m 2 . 2 1.5 1 0.5 ab a ab b c 0 Beach (10) Bedrock (3) Emergent (9) LWD (6) Trib mouth (7) FIGURE 46.—April daytime nearshore abundance to 1 m depth (mean ± 2SE; top panel) and shoreline density (mean ± 2SE; lower panel) of juvenile Chinook salmon in Lake Quinault, 2004. Bars with different letters are significantly diferent (ANOVA and Fisher’s LSD; P < 0.05). Numbers in parentheses indicate the number of replicates. 77
Chinook / 100m . 500 400 300 200 100 0 Beach (8) Bedrock (3) Emergent (4) LWD (5) Trib mouth (6) Chinook / m 2 . 1.5 1 0.5 a b ab ab c 0 Beach (8) Bedrock (3) Emergent (4) LWD (5) Trib mouth (6) FIGURE 47.—June nighttime nearshore abundance to 1 m depth (mean ± 2SE; top panel) and shoreline density (mean ± 2SE; lower panel) of juvenile Chinook salmon in Lake Quinault, 2004. Bars with different letters are significantly diferent (ANOVA and Fisher’s LSD; P < 0.05). The ANOVA test was not significant for the nearshore abundance (top panel). Numbers in parentheses indicate the number of replicates. Discussion Except for tributary mouths, few significant differences were observed in the use of different habitat types in Lake Quinault. Lack of pronounced differences may have been due to small sample sizes and high variability in Chinook salmon abundance between sites. There is little bedrock shoreline in Lake Quinault and only three bedrock sites were established. The abundance of Chinook salmon at bedrock sites was substantially lower than other habitat types, yet we detected few significant differences between bedrock sites and other habitat types. 78
Page 1 and 2:
U.S. Fish and IU.S. Wildlife FishSe
Page 3 and 4:
SUMMARY In 2003 and 2004, we contin
Page 5 and 6:
An overhanging vegetation/small woo
Page 7 and 8:
Table of Contents Page SUMMARY ....
Page 9 and 10:
List of Figures Figure Page FIGURE
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FIGURE 37.—Water column depth (m)
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The major tributary to Lake Washing
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Fry emerge from their redds from Ja
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FIGURE 2.—Location of index sites
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most dates (Figure 4). Unlike 2002,
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Chinook/m 2 1 0.8 0.6 0.4 0.2 0 Wes
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0.3 Mercer Island Chinook/m 2 0.2 0
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particularly valuable. Shoreline im
Page 27 and 28:
FIGURE 8.—Map of south Lake Washi
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FIGURE 10—Map of south Lake Washi
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# of marked Chinook 40 30 20 10 0 A
Page 33 and 34:
CHAPTER 3. RESTORATION SITES Introd
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Beer Sheva Park.—At Beer Sheva Pa
Page 37 and 38: Results Seward Park, 2003.—In 200
Page 39 and 40: 4 3.5 Chinook/100 m 3 2.5 2 1.5 1 0
Page 41 and 42: Martha Washington Park, 2003.—In
Page 43 and 44: 120 Chinook/100 m 100 80 60 40 20 s
Page 45 and 46: snorkeling and scuba diving were co
Page 47 and 48: Water column depth (m) . 0.80 0.60
Page 49 and 50: CHAPTER 5. FEEDING AT TRIBUTARY MOU
Page 51 and 52: FIGURE 28.—Location of four south
Page 53 and 54: FIGURE 29.—Photos of sites used t
Page 55 and 56: sampling. At night, Chinook salmon
Page 57 and 58: TABLE 5.—Diet overlap indices (C)
Page 59 and 60: TABLE 7.—Diet overlap indices (C)
Page 61 and 62: TABLE 10.—Diet composition of juv
Page 63 and 64: The lack of a large difference betw
Page 65 and 66: CHAPTER 6. USE OF NONNATAL TRIBUTAR
Page 67 and 68: shallow to snorkel were surveyed th
Page 69 and 70: Number of Chinook ff 700 600 500 40
Page 71 and 72: column depth used by Chinook salmon
Page 73 and 74: Chinook / m . 5 4 3 2 1 2003 - upst
Page 75 and 76: TABLE 13.—Diet overlap index (C)
Page 77 and 78: (P. Castle, WDFW, unpublished data)
Page 79 and 80: FIGURE 41.—Placement of Scotch br
Page 81 and 82: FIGURE 43.—Photo of a group of ju
Page 83 and 84: CHAPTER 8. LAKE QUINAULT SURVEYS In
Page 85 and 86: FIGURE 45.—Photos of large woody
Page 87: Similar to April surveys, the nears
Page 91 and 92: Tabor and Wurtsbaugh (1991) conclud
Page 93 and 94: FIGURE 48.—Location of south Lake
Page 95 and 96: FIGURE 49.—Conducting visual obse
Page 97 and 98: FIGURE 52.—Photo of a group of ju
Page 99 and 100: ACKNOWLEDGMENTS We wish to thank He
Page 101 and 102: workshop, Shoreline, Washington, No
Page 103 and 104: Paron, D.G., and E. Nelson. 2001. S
Page 105 and 106: Werner, E.E., and D.J. Hall. 1988.
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Nearshore Habitat Use by Juvenile Chinook Salmon in Lentic ...

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