Contents Volume 27, Number 1, February 1992 Volume 27, Number 2, April 1992 1 R.W. Jamieson and Frederick ]. Wrona: Life 151 P.E. Schmid: Community structure of larval history and production of the predatory Chironomidae (Diptera) in a backwater area caddisfly Rhyacophila vao Milne in a spring- of the River Danube fed stream 169 J].S. Richardson: Food, microhabitat, or both? 13 Landis Hare and Peter G.C. Campbell: Macroinvertebrate use of leaf accumulations Temporal variations of trace metals in aquatic in a montane stream insects 177 M.]. Dole-Olivier and P. Marmonier: Patch 29 John K. Jackson and Vincent H. Resh: Variation distribution of interstitial communities: in genetic structure among populations of the prevailing factors northern caddisfly Helicopsyche borealis from 193 A.D. Rosemond, S.R. Reice, ].W. Elwood and three streams in northern California, U.S.A. P.J. Mulholland: The effects of stream acidity 43 Carol A. Couch and Judy L. Meyer: on benthic invertebrate communities in the Development and composition of the epixylic south-eastern United States biofilm in a blackwater river 211 Manfred Péckl: Effects of temperature, age and 53 David Dudgeon and Ivan K.K. Chan: An body size on moulting and growth in the experimental study of the influence of freshwater amphipods Gammarus fossarum periphytic algae on invertebrate abundance and G. roeseli in a Hong Kong stream 227 John E. Reuter and Richard P. Axler: 65 R.H. Peterson and L. van Eeckhaute: Physiological characteristics of inorganic Distribution of Ephemeroptera, Plecoptera, nitrogen uptake by spatially separate algal and Trichoptera of three maritime catchments communities in a nitrogen-deficient lake differing in pH 237 G.A. Lamberti, $.V. Gregory, C.P. Hawkins, 79 A. Gerhardt: Effects of subacute doses of iron R.C. Wildman, L.R. Ashkenas and D.M. (Fe) on Leptophlebia marginata (Insecta: Denicola: Plant—herbivore interactions in Ephemeroptera) streams near Mount St Helens 85 Ryszard Kornijéw: Seasonal migration by 249 R.P. Barbiero and E.B. Welch: Contribution of larvae of an epiphytic chironomid benthic blue—green algal recruitment to lake 91 T.M. Short and J.R. Holomuzki: Indirect effect populations and phosphorus translocation of fish on foraging behaviour and leaf 261 Richard S. Feldman and Edward F. Connor: The processing by the isopod Lirceus fontinalis relationship between pH and community 99 A.J. Boulton and P.S. Lake: The ecology of two structure of invertebrates in streams of the intermittent streams in Victoria, Australia. II. Shenandoah National Park, Virginia, U.S.A. Comparisons of faunal composition between 277 Kaj Sand-Jensen and Tom Vindbeek Madsen: habitats, rivers and years Patch dynamics of the stream macrophyte, 123 A.J. Boulton and P.S. Lake: The ecology of two Callitriche cophocarpa intermittent streams in Victoria, Australia. III. 283 Kaj Sand-Jensen, Morten Foldager Pedersen and Temporal changes in faunal composition Seren Laurentius Nielsen: Photosynthetic use 139 R.S. Wotton: Feeding by blackfly larvae of inorganic carbon among primary and (Diptera: Simuliidae) forming dense secondary water plants in streams aggregations at lake outlets iv Contents Opinion 367 J.A. Waringer: The drifting of invertebrates 295 Robert C. Petersen, Jr: The RCE: a Riparian, and particulate organic matter in an Channel, and Environmental Inventory for Austrian mountain brook small streams in the agricultural landscape 379 Takayuki Hanazato and Takashi Ooi: Morphological responses of Daphnia ambigua to different concentrations of a chemical Volume 27, Number 3, June 1992 extract from Chaoborus flavicans 387 Nicholas A. O’Connor: Quantification of 307 Robert E. Stauffer: Efficient estimation of submerged wood in a lowland Australian temperature distribution, heat storage, stream system thermocline migration and vertical eddy 397 S.A. Blenkinsopp and M.A. Lock: Impact of conductivities in stratified lakes storm-flow on electron transport system 327 Alastair M. Suren and Michael J. Winterbourn: activity in river biofilms The influence of periphyton, detritus and 405 P.M. Sagar and G.J. Glova: Invertebrate drift shelter on invertebrate colonization of aquatic in a large, braided New Zealand river bryophytes 417 Roland Hall and John P. Smol: A weighted— 341 Ian C. Campbell, Kim R. James, Barry T. Hart averaging regression and calibration model and Anne Devereaux: Allochthonous coarse for inferring total phosphorus concentration particulate organic material in forest and from diatoms in British Columbia (Canada) pasture reaches of two south-eastern lakes Australian streams. I. Litter accession 435 Brian K. Sorrell and Paul I. Boon: 353 Ian C. Campbell, Kim R. James, Barry T. Hart Biogeochemistry of billabong sediments. II. and Anne Devereaux: Allochthonous coarse Seasonal variations in methane production particulate organic material in forest and 447 Book Reviews pasture reaches of two south-eastern 449 Author Index to Volume 27 Australian streams. II. Litter processing eo