Dear all, as a part of a study using porpoise click detectors (T-PODs)in a windfarm area I want to compare patterns within click trains or click train series obtained at two T-POD locations (inside and outside the windfarm). For this purpose I am working out a literature study on meaningful click patterns and their possible purpose in a behavioural context. Much of the information needed seems to be hidden in papers dealing with biosonar performance. I would appreciate every piece of literature (peer reviewed, conference proceeding, working papers etc.) which helps to define categories for my study. I already found following papers: Au, W. W. L. 1993. Sonar of dolphins. Springer. New York. 277 pp. Au, W. W. L., R. A. Kastelein, T. Rippe, & N. M. Schooneman. 1999. Transmission beam pattern and echolocation signals of a harbor porpoise (Phocoena phocoena). Journal of the Acoustical Society of America 106: 3699-3705. Busnel, R. G., & A. Dziedzic. 1967. Resultats metrologiques experimentaux de l'echolocation chez le Phocoena phocoena et leur comparison avec ceux de certaines chauves-souris. In [ed.], R. G. Busnel. Animal Sonar Systems, Biology and Bionics. Laboratoire de Physiologie Acoustique. Jouy-en-Josas, France. p. 307-335 Carlström, J. 2003. Bycatch, conservation and echolocation of harbour porpoises. PhD. Department of Zoology, Stockholm University, Stockholm, Sweden. Cox, T. M., & A. J. Read. 2004. Echolocation behavior of harbor porpoises Phocoena phocoena around chemically enhanced gillnets. Mar. Ecol. Prog. Ser. 279: 275-282. Goodson, A. D., & S. Datta. 1995. Investigating the sonar signals of the harbour porpoise, Phocoena phocoena. J. Acoust. Soc. India 23: 205-211. Goodson, A. D., R. A. Kastelein, & C. R. Sturtivant. 1995. Source levels and echolocation signal characteristics of juvenile harbour porpoises (Phocoena phocoena) in a pool. In [eds.], P. E. Nachtigal, J. Lien, W. W. L. Au, and A. J. Read. Harbour porpoises - laboratory studies to reduce bycatch. De Spil. Woerden. p. 41-53 Goodson, A. D., & C. R. Sturtivant. 1996. Sonar characteristics of the harbour porpoise (Phocoena phocoena):source levels and spectrum. ICES Journal of Marine Science 53: 465-472. Graner, F. 2003. Group structure and behaviour of the harbour porpoise Phocoena phocoena in Indre Sognefjord, Norway. PhD. Port Erin Marine Laboratories, University of Liverpool, Port Erin, Isle of Man, UK.219 pp. Kastelein, R. A., D. De Haan, & C. Staal. 1995. Behaviour of harbour porpoises (Phocoena phocoena) in response to ropes. In [eds.], P. E. Nachtigall, J. Lien, W. W. L. Au, and A. Read. Harbour porpoises - laboratory studies to reduce bycatch. De Spil Publishers. Woerden, The Netherlands. p. 69-90 Kellogg, W. N. 1958. Echo ranging in the porpoise. Science 128: 982-988. Meding, A. 2005. Untersuchungen zur Habitatnutzung von Schweinswalen (Phocoena phocoena) in ausgewählten Gebieten der Ostsee mit Hilfe akustischer Methoden. Ernst-Moritz-Arndt-Universität Greifswald, Germany.75 pp. Pilleri, G., K. Zbinden, & C. Kraus. 1980. Characteristics of the sonar system of cetaceans with pterygoschisis. Investigations on Cetacea 11: 257-188. Verboom, W. C., & R. A. Kastelein. 1997. Structure of harbour porpoise (Phocoena phocoena) click train signals. In [eds.], A. J. Read, P. R. Wiepkema, and P. E. Nachtigall. The biology of the harbour porpoise. De Spil Publishers. Woerden. p. 343-362 Verboom, W. C., & R. A. Kastelein. 2003. Structure of harbour porpoise (Phocoena phocoena) acoustic signals with high repetition rates. In [eds.], J. A. Thomas, C. F. Moss, and M. Vater. Echolocation in bats and dolphins. University of Chicago press. Chicago, USA. p. 40-43 Verfuß, U. K., L. A. Miller, & H.-U. Schnitzler. 2005. Spatial Orientation in echolocating harbour porpoises (Phocoena phocoena). J. EXP. BIOL. 208: 3385-3394. Cheers, Sven Dipl. Biol. Sven Koschinski Kühlandweg 12 D-24326 Nehmten Tel. ++49- (0) 4526 - 38 17 16 priv. ++49- (0) 4526 - 38 08 08 web-page: www.meereszoologie.de