Effects of Annual Spring Flow Events on Abundance of Rio Grande Silvery Minnow, Red Shiner, and Fathead Minnow with Notes on Recovery Needs for the Rio Grande Silvery Minnow

Date of Award

5-30-2007

Document Type

Undergraduate Capstone Project

Degree Name

Master of Applied Science

Organizational Unit

University College, Environmental Policy and Management

Disciplines

Environmental Policy And Management

First Advisor

Harold Tyus

Keywords

Rio Grande, Silvery minnow

Abstract

I investigated effects of annual spring flows on the abundance of Rio Grande silvery minnow, red shiner, and fathead minnow within two segments of the Middle Rio Grande (i.e., above and below the Rio Puerco) using 12 years of data. Rio Grande silvery minnow abundance was positively related to high spring flows and negatively related to low spring flows. Conversely, the abundance of the red shiner and fathead minnow were negatively related to high spring flows and positively related to low spring flows. The strength of these relationships varied with species and location but results from analyses below the Rio Puerco showed a stronger positive and negative relationship (with high and low spring flows, respectively) for Rio Grande silvery minnow.

Publication Statement

Copyright is held by the author. Permanently suppressed.

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