My WebLink
|
Help
|
About
|
Sign Out
Home
Browse
Search
7733
CWCB
>
UCREFRP
>
Public
>
7733
Metadata
Thumbnails
Annotations
Entry Properties
Last modified
7/14/2009 5:02:30 PM
Creation date
5/18/2009 12:39:56 AM
Metadata
Fields
Template:
UCREFRP
UCREFRP Catalog Number
7733
Author
McAda, C. W.
Title
Evaluation of Aerial-Video Measurement of Backwaters as Part of the Interagency Standardized Monitoring Program for Age-0 Colorado Squawfish.
USFW Year
1993.
USFW - Doc Type
\
Copyright Material
NO
There are no annotations on this page.
Document management portal powered by Laserfiche WebLink 9 © 1998-2015
Laserfiche.
All rights reserved.
/
90
PDF
Print
Pages to print
Enter page numbers and/or page ranges separated by commas. For example, 1,3,5-12.
After downloading, print the document using a PDF reader (e.g. Adobe Reader).
Show annotations
View images
View plain text
1 <br />' I will develop a subsamPlin9 Procedure that should be used when deemed necessary. <br />The procedure will allow for counting total number of fishes collected and for measuring <br />' Colorado squawfish for total length. <br />- The current level of sampling sympatric species is not adequate to determine their <br />' influence on the relative abundance of YOY Colorado squawfish. Sampling can not be <br />expanded with current manpower. Examining the influence of sympatric species on <br />YOY Colorado squawfish should be eliminated as an objective of the monitoring <br />' program. This relationship can be examined separately, as part of a research effort, if <br />deemed necessary. <br />Adult Colorado squawfish monitoring <br />- The reaches currently sampled in the monitoring program (20 to 30 percent of the <br />' known range in the four different rivers) are considered adequate to achieve the <br />objectives of the monitoring program. <br />' - Secchi disk and conductivity measurements will be taken for each sample. <br />- Spheres will be allowed as electrodes on electrofishing boats used for monitoring. They <br />will be used experimentally this year by everyone. If deemed satisfactory, they will be <br />the required electrodes in future years. <br />' - Tagging of endangered fish is not necessary to satisfy the goals of the monitoring <br />program. Unless tagging is specifically required by the Colorado River Fishes Recovery <br />Team, it will be dropped from the monitoring program. <br />Humpback chub monitoring <br />' - Changes in humpback chub monitoring will not be made until results from the Gila <br />taxonomy study are available. However, there was general agreement that some <br />changes may be necessary. These changes include increasing the number of <br />' measurements taken from the live fish, development of a protocol for use of the pictures <br />taken of the fish, elimination of tagging as a requirement and expanding the program to <br />include sampling every two years instead of every three years. <br />? ?r-ere--- <br />' cc: Members of the Technical Committee <br />John Hamill, FWS, Denver <br /> <br /> <br />41
The URL can be used to link to this page
Your browser does not support the video tag.