Table Of Content

HY DROBIOLOGIA Volume 432, 1 August 2000 Influence of photoperiod on vegetative propagule production in three turion-producing races of Hydrilla verticillata (L.f.) Royle Kerry K. Steward Water chemistry variability in the lower intertidal zone of an estuary in the Seto Inland Sea, Japan: seasonal patterns of nutrients and particulate compounds Paolo Magni, Shigeru Montani Dynamics and trophic roles of heterotrophic protists in the plankton of a freshwater tidal estuary Koenraad Muylaert, Riet Van Mieghem, Koen Sabbe, Micky Tackx, Wim Vyverman Factors regulating bluegreen dominance in a reservoir directly influenced by the Asian monsoon Kwang-Guk An, John R. Jones A new Philocheras species (Decapoda, Crangonidae) from Hansa Bay, Papua New Guinea S. De Grave 49-56 Functional morphology of the muscles in Philodina sp. (Rotifera: Bdelloidea) Rick Hochberg, Marianne Klauser Litvaitis 57-64 Factors regulating summer phytoplankton in a highly eutrophic Antarctic lake G. Mataloni, G. Tesolin, F. Sacullo, G. Tell 65-72 The rotifer fauna of arctic sea ice from the Barents Sea, Laptev Sea and Greenland Sea Christine Friedrich, Willem H. De Smet 73-89 Long-term dynamics of Asplanchna priodonta in Lake Windsborn with comments on the diet Heike Kappes, Christoph Mechenich, Ulrich Sinsch 91-100 Light- and nutrient-limited periphyton in low order streams of Oahu, Hawaii Scott T. Larned, Scott R. Santos 101-111 A 14000-year record of paleoenvironmental change in the western basin of China’s third largest lake, Lake Taihu Wenchuan Qu, Bin Xue, M. D. Dickman, Sumin Wang, Chengxin Fan, Ruijin Wu, Pingzhong Zhang, Jianfa Chen, Yanhong Wu 113-120 Activity traps and the corer: complementary methods for sampling aquatic invertebrates Terho HyvGnen, Petri Nummi 121-125 Ryocalanus spinifrons, a new species of Ryocalanidae (Copepoda: Calanoida), from the south- western part of Sagami Bay, Japan Shinji Shimode, Tatsuki Toda, Tomohiko Kikuchi Ecology and dynamics of two intertidal algal communities on the littoral of the island of Sao Miguel (Azores) Ana Isabel Neto Effects of marine ciliates on survivability of the first-feeding larval surgeonfish, Paracanthurus hepatus: laboratory rearing experiments Naoki Nagano, Yukio Iwatsuki, Takashi Kamiyama, Hideaki Nakata 149-157 IV Ultraviolet sunscreen compounds in epiphytic red algae from mangroves Ulf Karsten, Thomas Sawall, John West, Christian Wiencke 159-17] Survival and energy metabolism in an oxygen deficient environment. Field and laboratory studies on the bottom fauna from the profundal zone of Lake Esrom, Denmark 173-188 Kirsten Hamburger, Peter C. Dall, Claus Lindegaard, Ida B. Nilson Effects of plant density and age on the mating system of Kandelia candel Druce (Rhizophoraceae), a viviparous mangrove species Xiao-yong Chen 189-193 Habitat specificity of littoral Chydoridae (Crustacea, Branchiopoda, Anomopoda) in Plastic Lake, Ontario, Canada Birgitta Tremel, S.E. (Libby) Frey, Norman D. Yan, Keith M. Somers, Trevor W. Pawson 195-205 Characterization of benthic bacterial assemblages in a polluted stream using denaturing gradient gel electrophoresis Derek G. Cody, Robert T. Heath, Laura G. Leff Trace metals in marine, brackish and freshwater prawns (Crustacea, Decapoda) from northeast Algeria 217-227 C. Abdennour, B. D. Smith, M. S. Boulakoud, B. Samraoui, P. S. Rainbow A new sampler for collecting invertebrates in submerged vegetation Ola Marklund 229-231 Author Index