VOLUME CONTENTS Volume 48, Issue 1, January 2003 Volume 48, Issue 2, February 2003 ( iricin Volume 48, Issue 3, March 2003 aynamics ane \v Volume 48, Issue 5, May 2003 Volume 47, Issue 6, June 2003 Volume 48 Volume 4§, Issue 9 September 2( Volur 18, Issue 10, October 2003 Hawkins and Mark R. Vinson: Mea- Volume 48, Issue 12, December 2003 suring and controlling data quality in biological assem- Original Articles blage surveys with special reference to stream benthic . a : ; ; ce Calum MacNeil, Nina J. Fielding, Jaimie T. A. Dick, Mark macroinvertebrates s : Briffa, John Prenter, Melanie] . Hatcher and Alison M. Dunn ; Hein10o anwdo An acanthocephala} n parasit: e mediates intraguil. d preda- \re biological classifications of headwater tion between invasive and native freshwater amphipods streams concordant across multiple taxonomic groups? (Crustacea) Corey L. Laxson, Kerry N. McPhedran, Joseph C. Makarewi 2 Irena V lesh and Hi J. Maclsaac: Effects of the non- Volume 48, Issue 11, November 2003 ; engoi on the lower food : 1 web 1, of Lake Ontatrari o Original Articles re : , Sai Mie DER ieee ad min oes als 2 ) L] ee C. " HL asatcihFe aann d Mark L RR. You) ng: ye Timing y of spawny ing and . eae : glochidial release in Scottish freshwater pearl mussel of dissolved nutrients and 4 llaatt e orrggéa nic on micro—D iai | respiration an j bi‘ omass 1n" a ififera margaritifera) populations Wendell R. Haag and J]. Leann Staton: Variation in fe- V, cundity and other reproductive traits in freshwater mus- ymmunities ae 1) and an | S. Nandini, Ricardo Perez-Chavez and S. S. S. Sarma: The effect of prey morphology on the feeding behaviour and population growth of the predatory rotifer Asplanchna Geomorphologer y an ha ' ina sieboldi: a case study usingé five species of Brach : A 3 (Rotifera) mont river basin, U.S.A S ( 1} la EI. Ca t \ u I [ lena Lifchman 7 ) aniel Stet amn0d B2o ssard7 : . Ph} oto- ee synthetic and growth responses of three freshwater algae nmental inftiuencoen pigment Va phosphorus F limitation and daylength , lillyer, Cath Cleary Viet erecta aes a ae peas ] 1d Barbara karsky: Genetic structure in a montane Laboratory experiments on the imp ce 1 3 mayfly Baetis bicaudatus (Ephemeroptera: Baetidae), from piankton Of a iarge river the Rocky Mountains, Colorado ' nio Di S ino. Bruno Cicolan Phosphorus cycling sabunloaunan sipeanissis lane eS canoe Biodiversity and distribution of water mites (Acari, Hy- oligotrophic Everglades wetianc ’ . drachnidia) in spring habitats lloisotope tracing study \ ba a Eckart Zollner, Barbar r, Maarten Boersma, Hans-Georg \pplication of the frequency of divid ° ‘ 1 1 1 A yyi in} d K. ia s uJrurggee ns: C€ asce inngg p re < 10 »frfeecctt ) lis tecohe tno iestqim‘ uatee t he sifu growth rate of Vapnneie F vo I asca: diny ]| fporoedd aStei wce b arceosm ap o- yanoDacterla Coex Dp j ; : istence of cryptic rotifer species: ecological and genetic characterisation of Brachic roinvertebDrates in ¢ > aenciency \ssessing structural and functional ecosystem vad an arrillo and Kyl e D. Zimmer: Biomani- using leaf breakdown:studies on a polluted pulation: a useful tool for freshwater wetland mitigation? Margaret A. Brock, Katharine Crossle, Ken y and Irene Jarosinski: The effects of ind Michel salinity on aquatic plant germination and zooplankton - the biomonitoring of large hatching from two wetland sediments ssment of alternative me Book Reviews Author Index S.J. Orme? Diatoms as in dicators of stream quality in the Kathmandu Valley and Middle Hills of Nepal and India