Food Habits of the Native Fishes in the Virgin River, Zion National Park, Utah (Classic Reprint) - Hardcover

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Excerpt from Food Habits of the Native Fishes in the Virgin River, Zion National Park, Utah<br/><br/>In addition, an electivity index was applied to the aquatic invertebrate data in order to assess possible feeding preferences. Numerous electivity or feeding preference indices have been developed which quantify electivity or preference by comparing the proportion of the i'

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