LISTSERV mailing list manager LISTSERV 15.5

Help for FISH-SCI Archives

FISH-SCI Archives

FISH-SCI Archives


Next Message | Previous Message
Next in Topic | Previous in Topic
Next by Same Author | Previous by Same Author
Chronologically | Most Recent First
Proportional Font | Monospaced Font


Join or Leave FISH-SCI
Reply | Post New Message
Search Archives

Subject: Re: Impacts of divers
From: Chris Harrod <[log in to unmask]>
Reply-To:Scientific forum on fish and fisheries <[log in to unmask]>
Date:Wed, 11 Mar 2009 17:06:15 +0000

text/plain (74 lines)

There is a nice study by Marc Schmidt on diver-avoidance in reservoir-dwelling Coregonus albula (similar to the north American cisco)
These fish are a lot smaller than the large-bodied salmonids you are dealing with. 

Schmidt, M. B. & Gassner, H. (2006). Influence of scuba divers on the avoidance reaction of a dense vendace (Coregonus albula L.) population monitored by hydroacoustics. Fisheries Research 82, 131-139.


><> ><> ><> ><> ><> ><> ><> ><> ><> ><> ><> ><> ><> ><
Dr Chris Harrod
Lecturer in Fish and Aquatic Ecology
Queen's University Belfast
School of Biological Sciences
Medical Biology Centre
97 Lisburn Road
Belfast BT9 7BL
[log in to unmask]
Tel: +44 (0) 28 909 72271
Mob: +44 (0) 79 77419314
Lab: +44 (0) 28 909 72106
Fax: +44 (0) 28 909 75877
<>< <>< <>< <>< <>< <>< <>< <>< <>< <>< <>< <>< <>< <><  


I am  working on a project that will replace some anchor cables on the
two  floating bridges that cross Lake Washington in Seattle, Washington.
The  project will use a pair of divers to replace these cables in water
from 40  to 200 feet deep.  Lake Washington is the largest lake in
Western  Washington, and supports a number of salmonid species, including
anadromous  sockeye.  Adult sockeye are known to find thermal refuge at
50 to 90  feet deep during the warmest part of the summer, and this
season the  population is expected to be 105,000.

A question has arisen on the  potential impact that two divers would have
on these fish, and I am at a  loss to find a source of information.  Does
anyone know, or can anyone  provide best professional judgment, on the
potential impact of a pair of  divers moving vertically through the
thermal refuge layers where sockeye  would be dispersed?

Brian Bigler
NW Region Biology Program  Manager
Washington State Department of Transportation
Seattle, WA
Direct: 206-440-4519
Cell:    206-919-1610
FAX:   206-440-4805

Nelson Resources Consulting, Inc.
954 653  8295
561 449 9637
**************A Good Credit Score is 700 or Above. See yours in just 2 easy

This electronic mail message may contain information which is (a) LEGALLY PRIVILEGED, PROPRIETARY IN NATURE, OR OTHERWISE PROTECTED BY LAW FROM DISCLOSURE, and (b) intended only for the use of the Addressee (s) names herein.  If you are not the Addressee (s), or the person responsible for delivering this to the Addressee (s), you are hereby notified that reading, copying, or distributing this message is prohibited.  If you have received this electronic mail message in error, please contact us immediately and take the steps necessary to delete the message completely from your computer system.  Thank you.

Please visit ERM's web site:

Back to: Top of Message | Previous Page | Main FISH-SCI Page



CataList Email List Search Powered by the LISTSERV Email List Manager