9711

• UCREFRP Catalog Number: 9711
• Author: Coggins, L.G.
• Title: Abundance trends and status of the Little Colorado River population of humpback chub
• USFW Year: 2008.
• USFW - Doc Type: an update considering 1989-2006 data.
• Copyright Material: NO

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Figure 1. Relative abundance indices of sub-adult 050-199 mm total length (TLll and adult (>200 mm TU humpback chub based on
hoop-net catch rate (fish/hour) in the lower 1,200-m section of the little Colorado River (Al and trammel-net catch rate Ifish/hour/100m)
of adult (>200 mm TU humpback chub in the Little Colorado River inflow reach of the Colorado River (8). Error bars in the top panel
are 95% confidence intervals. In the lower panel, the solid line represents a regression model fit to the subset of data (solid circles)
representing robust sampling and the dashed line represents a regression model fit to the entire dataset (all circles).

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