Here is the summary of the replies I have received. I would like to thank everyone for their reply.
Best Regards Paulo Freitas ============================================================== I used to work for the New England aquarium in Boston and I know they helped develop some seal 'scarers' and I believe they may have some literature on that subject. The number for the library is (617) 973-5237. The librarians name is Dot Wensink and her email is [EMAIL PROTECTED] I hope that they may be of some help. Good luck in your research, Sincerely, Karen Lashenske ============================================================== Not sure if you're interested in the effectiveness of these devices or in potential side-effects on non-target species. The following studies have investigated the effect of seal scarers on various marine mammal species: � Morton, A.B., & Symonds, H.K. 2001: Displacement of Orcinus orca (L.) by high amplitude sound in British Columbia, Canada. ICES Journal of Marine Science 59(1):71-80 � Olesiuk, P.F., Nichol, L.M., Snowden, M.J., & Ford, J.K.B. 2002: Effects of the sound generated by an acoustic harassment device on the relative abundance and distribution of harbor porpoises (Phocoena phocoena) in Retreat Passage, British Columbia. Marine Mammal Science 18(4):843-862. � Yurk, H. & Trites, A. W. 2000: Experimental attempts to reduce predation by harbor seals on out-migrating juvenile salmonids. Transactions of the American Fisheries Society 129(6):1360-1366 Hope this helps. Volker Deecke ============================================================== A student of Jack Terhune <[EMAIL PROTECTED]> from the University of New Brunswick did a report or paper on the use of seal scarers along the East Coast of Canada. I cannot remember the name and a can't find the paper but you could contact Terhune regarding the publication. I used AIRMAR devices in a river to move seal away from a particular site. The paper is attached. Good Luck with your work. HaraldYurk ============================================================== I have a paper on the impact of these devices on killer whales Alexandra Morton ============================================================== This reference might help. Morton, A. B., and Symonds, H. K. 2002. Displacement of Orcinus orca (L.) by high amplitude sound in British Columbia, Canada. ICES. J. Mar. Sci. 59: 71-80 cheers, Andy ============================================================== Johnston, D. W. 2002. The effect of acoustic harassment devices on harbour porpoises (Phocoena phocoena) in the Bay of Fundy, Canada. Biological Conservation 108, 113-118. Culik BM, Koschinski S, Tregenza N, Ellis G (2000) Reactions of harbour porpoises (Phocoena phocoena) and herring (Clupea harengus) to acoustic alarms. Mar Ecol Prog Ser 211: 255-260 http://fp.ecologic.free-online.co.uk/SNHADDReview.pdf Best, Luke ============================================================== Jacobs & Terhune 2002 The effectiveness of acoustic harassment devices in the Bay of Fundy, Canada: seal reactions and a noise exposure model. Aquatic Mammals 28: 147-158. Terhune, Hoover & Jacobs. 2002 Potential detection and deterrence ranges by harbor seals of underwater acoustic harassment devices (AHD) in the Bay of Fundy, Canada. J. World Aquaculture Soc. 33: 176-183 and references therein. Regards, J. Terhune ============================================================== This will give you a start. There are several more recent papers (Morton, A and Symonds,H.K. 2001 ICES Journal and another by Olesiuk and Ford in either MMS or Can. J. Zoology j Jon Lien Ph.D. ============================================================== Following your call for information on marine mammal scarers, I have come across a couple of references you may find helpful. The first is an NMFS report at http://www.afsc.noaa.gov/Publications/ProcRpt/PR%202003-02.pdf Loughborough Univ have worked on the project EPIC that was concerned with marine mammal scarers. They used to have link to their papers on-line but copyright concerns have resulted in them removing the links. the point of contact was Dave Goodson but he died a few weeks ago. Found one of them at Marine and Freshwater Behaviour and Physiology 29(1-4): 211-236, 1997 The IWC Journal of Cetacean Research and Management have published some papers on this subject over the last few years. A search using Google should find them. Certainly Goodson was a leading author on this. Hope you find this useful. regards Peter Ward ============================================================== Paulo, we have given up on AHD's in British Columbia, Canada, and prohibited them, as they proved to be quite ineffective at deterring seal attacks (seals acclimatize to even the very powerful units) and we found they displace other marine mammals such as harbor porpoise and whales. I've attached one study on the latter. Cheers, Peter O. ============================================================== I have been approached by salmon fishery owners about protecting their fish. They have tried acoustic scarers and find they only work initially until the predators get really hungry. Joe Blue Pres. Leviathan Legacy, Inc. ============================================================== And thanks to Dr. Simon Northridge.
