Habitat Quality and Recruitment Success of Cui-ui in the Truckee River Downstream of Marble Bluff Dam, Pyramid Lake, Nevada (Paperback) (ISBN-13: 9781496183637)

We compared cui-ui (Chasmistes cujus) recruitment from two reaches of the Truckee River with histories of severe erosional downcutting caused by a decline in Pyramid Lake surface elevation. In 1975, Marble Bluff Dam (MBD) was constructed 5 kilometers upstream of the extant mouth of the Truckee River to stabilize the upstream reach of the river; the downstream reach of the river remained unstable and consequently unsuitable for cui-ui recruitment. By the early 2000s, there was a decrease in the Truckee River's slope from MBD to Pyramid Lake after a series of wet years in the 1990s. This was followed by changes in river morphology and erosion abatement. These changes led to the question as to cui-ui recruitment potential in the Truckee River downstream of MBD. In 2012, more than 7,000 cui-ui spawners were passed upstream of MBD, although an indeterminate number of cui-ui spawned downstream of MBD. In this study, we compared cui-ui recruitment upstream and downstream of MBD during a Truckee River low-flow year (2012). Cui-ui larvae emigration to Pyramid Lake began earlier and ended later downstream of MBD.

Author: U. S. Department of the Interior
ISBN-10: 1496183630
ISBN-13: 9781496183637
Publisher: Createspace Independent Publishing Platform
Language: English
Published: 03/30/2014
Pages: 28
Format: Paperback
Weight: 0.20lbs
Size: 11.02h x 8.50w x 0.06d