scholarly journals Visual performance impaired by elevated sedimentary and algal turbidity in walleye Sander vitreus and emerald shiner Notropis atherinoides

2019 ◽  
Vol 95 (1) ◽  
pp. 186-199 ◽  
Author(s):  
Chelsey L. Nieman ◽  
Suzanne M. Gray
Keyword(s):  
Visual Performance ◽  
Sander Vitreus ◽  
Notropis Atherinoides ◽  
Emerald Shiner

scholarly journals Length-weight relationships of the Emerald Shiner (Notropis atherinoides - Rafinesque, 1818) in the Western Basin of Lake Erie

2014 ◽  
Vol 114 (2) ◽  
pp. 27 ◽  
Author(s):  
Tiffany Atkinson ◽  
SCOTT DESROSIERS ◽  
TESSA TOWNSEND ◽  
THOMAS SIMON
Keyword(s):  
Standard Length ◽  
Lake Erie ◽  
Positive Relationship ◽  
Strong Positive Correlation ◽  
Western Basin ◽  
Positive Correlation ◽  
Weight Relationship ◽  
Total Length ◽  
Notropis Atherinoides ◽  
Emerald Shiner

Total length and standard length (mm) were compared to weight (mg) in the Emerald Shiner (Notropis atherinoides - Rafinesque, 1818) in the western basin of Lake Erie. Length and weight relationship (n = 400), length-frequency distribution, and sex ratios were evaluated for  coastal and tributary habitats and compared to open water habitats. A strong positive correlation was observed between length and weight for both males and females. For males (n = 195) there was a significant positive relationship between standard length (SL) and weight (F = 935.64, d.f = 195; R2 = 0.989) and between total length (TL) and weight (F = 918.75, d.f. = 195; R2 = 0.991). In females (n = 205), there was also a strong positive correlation between SL and weight (F = 1108.18, d.f. = 204; R2 = 0.976) and between TL and weight (F = 1208.86, d.f. = 204; R2 = 0.983). This same positive relationship between SL and weight (F = 1909.58, d.f. = 399; R2 = 0.984,) and between TL and weight (F = 1960.07, d.f. = 399; R2 = 0.988) that was found for  the individual sexes was present in the combined data for the two sexes. Length-weight relationship patterns in Emerald Shiner were significantly influenced by sex (ANCOVA, F= 313.03, p < 0.01) and habitat (ANCOVA, F = 6.693, p = 0.013).  Three separate age classes were distinguished in the data. Age 0 males ranged from 15-33 mm TL, while age 0 females ranged from 18-30 mm TL. Age I males ranged from 39-78 mm TL and Age I females ranged from 42-78 mm TL. Age II+ males ranged from 78-111 mm TL and Age II+ females ranged from 81-108 mm TL. Emerald Shiner exhibit indeterminate growth and sex influenced growth patterns based on the von Bertalanffy growth model.

The Effects of Laser Illumination on Operational and Visual Performance of Pilots During Final Approach

2004 ◽  
Author(s):  
Van B. Nakagawara ◽  
Ronald W. Montgomery ◽  
Archie E. Dillard ◽  
Leon N. McLin ◽  
C. William Connor
Keyword(s):  
Visual Performance ◽  
Laser Illumination ◽  
Final Approach

Visual performance after preadaptation to colored lights.

1970 ◽  
Vol 83 (3, Pt.1) ◽  
pp. 359-365 ◽  
Author(s):  
C. R. Cavonius ◽  
R. Hilz
Keyword(s):  
Visual Performance ◽  
Colored Lights
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