My WebLink
|
Help
|
About
|
Sign Out
Home
Browse
Search
WSP07923
CWCB
>
Water Supply Protection
>
Backfile
>
7001-8000
>
WSP07923
Metadata
Thumbnails
Annotations
Entry Properties
Last modified
1/26/2010 2:29:26 PM
Creation date
10/12/2006 2:40:24 AM
Metadata
Fields
Template:
Water Supply Protection
File Number
8220.101.10.E
Description
Glen Canyon Dam/Lake Powell
State
AZ
Basin
Colorado Mainstem
Date
4/1/1998
Author
Sorensen/et al. - Ar
Title
Monitoring and Habitat Surveys of the Endangered Kanab Ambersnail in Grand Canyon and Northern Arizona
Water Supply Pro - Doc Type
Report/Study
There are no annotations on this page.
Document management portal powered by Laserfiche WebLink 9 © 1998-2015
Laserfiche.
All rights reserved.
/
36
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
<br />Arizona Game and Fish Department <br />NGTR 125: Kanab Ambersnail Report <br /> <br />April 1998 <br />Page 11 <br /> <br />4) Enter into cooperative agreements or land acquisition (including secured water <br />rights) of the privately-owned 3L site, the extirpated type 1000000ty-- "the Greens, ~ <br />and other potential introduction sites. To protect the VP population, interagency <br />cooperation is needed to manage Glen Canyon Dam operating flows that would <br />lessen impact on VP habitat. <br /> <br />5) <br /> <br />Physically modifying marginal or less-desirable natural habitats to be comparable to the <br />VP and 3L sites. Site enhancements would include any of the following: constructing <br />water retainment basins or channels, installing physical barriers to lessen the impact of <br />flash floods and rockfall, increasing primary vegelation area, or adding primary vegetation <br />to existing secondary vegetation. Ideal sites for physical modification would be: Upper <br />Elves Chasm; Nankoweap "Canyon Grape Spring~ and "Twin Spri.ngs~, Kanab Creek <br />Seep, and Pipe Spring National Monument. Each of these sites has several acceptable KAS <br />habitat cbarllcteristics and receive moderate natural disturbances, but low recreation use. <br /> <br />;~ <br /> <br />~: <br />" <br /> <br />t'~ ' <br /> <br />,,' <br />;\ <br />~ <br />~ <br /> <br />~ <br /> <br />6) <br /> <br />Creating habitats by extensive modification of natural areas that did not have suitable <br />habitat originally. This option would require creating spring/seep habitat by providing a <br />diverted or piped water source, establishing riparian vegetation where none existed before, <br />and other features detailed in option 5. The introduction of KASs into 'new, created <br />habitats would circumvent any potential adverse impact to existing mollusk: populations, <br />but requires the most effort in creating and maintaining a stable, usable habitat. <br /> <br />" <br /> <br />\-\~ <br /> <br />~' . <br /> <br />!CAS recovery will not benefit from a "no action~ option or from continuance of current <br />management strategies. <br /> <br />Introducing new KAS populations to comparable habitats requires additional work specifically <br />addressing site environmental assessments, National &wironmental Policy Act compliance, state <br />and federal permits, AGFD's l2-step reintroduction process (AGFD 1987), agency funding and <br />logistical support, and long-term monitoring. The Department of the Interior CUPCA and AGFD <br />have entered into an agreement to establish a long-term refugium population of KAS at TPZ in <br />Phoenix, Arizona. In addition, these cooperators are working on the establishment of wild <br />populations of KASs in Grand Canyon region using the AGFD l2-step process to follow legal <br />compliance and solicit agency, public, and peer review. Concurrent research at NAU is studying <br />the methods and viability of transIocating KASs and habitat to other sites, and captive propagation <br />ofKASs for future recovery efforts (1... Stevens, pers. comm.). General agreement of the KAWG <br />states that zoo refugium and the Nelson/Stevens test population at Glen Canyon Dam will be <br />equivalent to 1O(j) status populations, and will not count in recovery efforts toward downlisting. <br />Natural habitats must be used for long-term species recovery. <br /> <br />):"' <br /> <br />~:; , <br />:.~ <br />:-'1 <br />. ~.: I <br />~, ' <br />,';1 <br />.-;1: <br />",.' <br />'. <br /> <br />". <br />~?~ <br />@ <br />.- <br />~;; <br /> <br />.~. <br /> <br />r'. <br />
The URL can be used to link to this page
Your browser does not support the video tag.