The editor of the Bulletin Arquipe'lago, Series Life and Earth Sciences, sincerely thanks the individuals listed below, who served as manuscript reviewers for the numbers 8, 9 and/or 10 (1990-1992): Miguel A. Alcaraz, Spain Pilar Andreu, Spain Hans Bath, Germany Andrew H.R. Beaumont, Wales Alan B. Bolten, Florida Manuel J. Biscoito, Madeira George Branch, S. Africa Torleiv Brattegard, Norway Frederick M. Broadhurst, England Emygdio L. Cadima, Portugal Malcolm R. Clarke, England Michael Depledge, Denmark Martim Portugal Ferreira, Portugal Charles H.J.M. Fransen, The Netherlands Jonathan Gordon, England Roger T. Hanlon, Texas Stephen J. Hawkins, Isle of Man Ray W. Ingle, England Otakar Kudma, Germany Frederico Machado, Portugal JosB ~ v i l Martins, a A~ores Gerhard E. Maul, Madeira Marc Meyer, Luxembourg Richard D.M. Nash, Isle of Man Trevor A. Norton, Isle of Man Steffen Oehmig, Germany Egil R. Drskov, Scotland C. Pelerents, Belgium Jacques Pierre, France Jean Michel Rabasse, France R.W. M. van Soest, The Netherlands Ant6nio Bivar de Sousa, Portugal Ian Tittley, England Manuel Carvalho Varela, Portugal Alwyne Wheeler, England Peter Wirtz, Madeira Beginning with this number (ll), the Bulletin Arquiptlago, Series Life and Earth Sciences has been split in two series: A - Life and Marine Sciences; B - Earth Sciences. Capa - - Composi~lo Departamento de Oceanografia c Pesca, Universidade dos AGores, Horta barro apores, Horta - Impresslo e selecplo -Tip. Modcrna - Jaime Cruz - Aries Grificas, Lda. - Angra do Heroismo 1.000 ex. - Dezembro 1993 - Dep6sito legal n." 33098189