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27th Congress in Dublin 1998

Ed.: William D. Williams

2001. IX, 773 pages, 17x24cm, 1420 g
Language: English

(Verhandlungen IVL, Volume 27 Part 5)

ISBN 978-3-510-54056-3, paperback, price: 200.00 €

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Contents

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CORTES, R. M. V., OLIVEIRA, S. V. & TAVARES, I. M. S. T.: Riparian
habitats in small streams: are theyecotones? 2505
CRESSA, C.: Macroinvertebrate community structure of twenty-eight
Venezuelan streams 2511
DEATH, R. G.: The effect of land-use on species-area relationships in
benthic stream invertebrates 2519
FLEITUCH, T.: Structure and functioning of benthic communities in a
mountain stream (southern Poland) 2523
GARCIA, X. F. & LAVILLE, H.: Spatio-temporal distribution of the
chironomid populations in the lowerpart of a large river: the Middle
Loire (France) 2524
MARY, N. & GAGNEUR, J.: Structure of benthic communities in New
Caledonian rivers and streams 2525
MAZURKIEWICZ, G. & FLEITUCH, T.: Patterns of benthic fauna diversity
in a mountain river 2529
MIHUC, T. B., BRYAN, C. F. & BECK, L. T.: Long-term comparison of
water hyacinth (Eichhorniacrassipes) invertebrate assemblages in a
sub-tropical river floodplain: 1975-1976 and 1994-1995 2535
NALEPA, T. F., LANG, G. A. & FANSLOW, D. L.: Trends in benthic
macroinvertebrate populations insouthern Lake Michigan
NIJBOER, R. C. & VERDONSCHOT, P. F. M.: Taxonomic adjustment affects
data analysis: an often forgotten error 2546
PAAVOLA, R., MUOTKA, T. & TIKKANEN, P.: Macroinvertebrate community
structure and species diversityin humic streams of Finnish Lapland 2550
SMITH, M. E. & ANDRIKOVICS, S.: Benthic invertebrates in blackwaters:
a comparison of macro- and mesofaunal assemblages in south-eastern
United States and Middle Europe 2556
STUBAUER, I. & MOOG, O.: Taxonomic sufficiency versus need for
information - comments based onAustrian experience in biological water
quality monitoring 2562
TOMAN, M. J. & PODGORNIK, S.: Artificial substrate colonization by
macroinvertebrates in a small streamecosystem 2567
VADINEANU, A., CRISTOFOR, S., IGNAT, GH., CIUBUC, C., ,RISNOVEANU,
G., BODESCU, FL. & BOTNARIUC,N.: Structural and functional changes
within the benthic communities of Danube Delta lakes 2571
VERDONSCHOT, P. F. M.: Soft-bottomed lowland streams: a dynamic
desert 2577
WARD, J. V., TOCKNER, K., EDWARDS, P. J., KOLLMANN, J., GURNELL,
A. M., PETTS, G. E., BRETSCHKO, G.& R OSSARO, B.: Potential role of
island dynamics in river ecosystems 2582
BOIX, D., SALA, J. & MORENO-AMICH, R.: Succession of the
macroinvertebrate community in a temporarypond 2586
HABDIJA, I., RADANOVIC, I. & MATONICKINV, R.: Functional feeding
structure of benthic macroinverte-brates in travertine barrier
biotopes 2594
PRIMC-HABDIJA, B., HABDIJA, I. & SPOLJAR, M.: Trophic structure of
ciliate associations in periphytic com-munities in karstic waters 2600
ALADIN, N. V., PLOTNIKOV, I. S. & ZHAMOIDA, V.: Palaeolimnology and
palaeosalinity of the Aral Sea dur-ing the Holocene as indicated by
ostracod deposits 2605
COULTER, G. W.: International Conference on Ancient Lakes, Japan (ICAL
'97): perspective of a participant 2609
DARWICH, A., KERN, J., ROBERTSON, B. & SOUZA, E.: Decomposition of
Echinochloa polystachya and itscontribution to nutrient cycling in a
Central Amazonian floodplain lake 2611
DILLON, P. J. & EVANS, H. E.: Long-term changes in the chemistry of a
soft-water lake under changingacid deposition rates and climate
fluctuations 2615
FREE, G., ALLOTT, N., MILLS, P., KENNELLY, C. & DAY, S.: Colour in
Irish lakes 2620
GÜDE, H., SEIDEL, M., TEIBER, P. & WEYHMÜLLER, M.: P-release from
littoral sediments in Lake Constance 2624
HALL, K. J. & NORTHCOTE, T. G.: Long-term (millennial, centurial)
changes in the limnology of a salinemeromictic lake: causes and
consequences 2628
HAMEED, A., MOSS, B., KILINC, S. & MCGOWAN, S.: The Broads and the
Meres - contrasts in key nutrient importance 2633
JASSBY, A. D., GOLDMAN, C. R., REUTER, J. E. & RICHARDS, R. C.:
Biostatistical evaluation of long-termlake clarity record 2634
KOREN, N. & OSTROVSKY, I.: Sedimentation in a stratified subtropical
lake 2636
MARTENS, K., WOUTERS, K., MAZEPOVA, G. & SCHÖN, I.: Geniation and the
genus concept in ancientlakes 2640
MCGARRIGLE, M. L., HALLISSEY, R., DONNELLY, K. & KILMARTIN, L.: Trends
in phosphorus loading toLough Conn, Co. Mayo, Ireland 2642
MODENUTTI, B., PÉREZ, G., BALSEIRO, E. & QUEIMALINOS, C.: The
relationship between light attenuation, chlorophyll a and total
suspended solids in a Southern Andes glacial lake 2648
NORTHCOTE, T. G. & HALL, K. J.: Short-term (decadal, annual, seasonal)
changes in the limnology of asaline uni-/bimeromictic lake: causes and
consequences 2652
NOZAKI, K. & MITSUHASHI, H.: Nutrient accumulation by a bloom of the
filamentous green alga Spirogyrasp. in the littoral zone of the north
basin of Lake Biwa 2660
PARK, L. E., COHEN, A. S. & MARTENS, K.: Ecology and speciation of the
ostracod clade (Gomphocythere)in a tropical lake system, Lake
Tanganyika, East Africa 2665
PLISNIER, P.-D.: Recent climate and limnology changes in Lake
Tanganyika 2670
SCHÖN, I., VERHEYEN, E. & MARTENS, K.: Speciation in ancient lake
ostracods: comparative analysis of Baikalian Cytherissa and Tanganyikan
Cyprideis 2674
V.-BALOGH, K., KONCZ, E. & VÖRÖS, L.: An empirical model describing
the contribution of colour, algaeand particles to the light climate of
shallow lakes 2678
VILJANEN, M., HOLOPAINEN, A.-L. & DRABKOVA, V.: Changes in the
ecological state of Lake Ladoga 2682
BARBOSA, F. A. R. & CALLISTO, M.: Rapid assessment of water quality
and diversity of benthic macroin-vertebrates in the upper and middle
Paraguay River using the Aqua-Rap approach 2688
BARROS, J. S., CUNHA, M. J., LINO, M., VIEIRA N. & VALENTE, A. C. N.:
Evaluation of the water qualityand biotic communities of two
Portuguese reservoirs (Alto Lindoso and Ermal) and their relationship
with recreational fishing 2693
CALLISTO, M., MARQUES, M. M. & BARBOSA, F. A. R.: Deformities in
larval Chironomus (Diptera, Chi-ronomidae) from the Piracicaba River,
southeast Brazil 2699
DE PAUW, N., BEYST, B. & HEYLEN, S.: Development of a biological
assessment method for river sedi-ments in Flanders, Belgium 2703
ELORANTA, P. & KWANDRANS, J.: Water quality of the River Vantaanjoki
(South Finland) described usingdiatom indices 2709
GALDEAN, N. & STAICU, G.: The tendency of eutrophication of the Tisa
watershed (Romania) reflectedin the qualitative changes of the benthic
communities of some rivers 2714
JACOBI, G. Z., SMOLKA, L. R. & JACOBI, M. D.: Benthic
macroinvertebrate bioassessment of the Red River, New Mexico, USA 2719
MÖSSLACHER, F.: Advantages and disadvantages of groundwater
organisms for biomonitoring 2725
OERTEL, N.: Translocation of zebra mussel (Dreissena polymorpha
Pallas) as a tool to monitor heavy metalsin the River Danube 2729
PADIÁK, J., BARBOSA, F. A. R., BORBE'LY, G., BORICS, G., CHORUS, I.,
ESPINDOLA, E. L. G., HEINZE, R.,R OCHA, O., TÖRÖKNÉ, A. K. & VASAS,
G.: Phytoplankton composition, biodiversity and a pilot survey of
toxic cyanoprokaryotes in a large cascading reservoir system (Tietê
basin, Brazil) 2734
ROVEDATTI, M. G., LOEZ, C. R., TOPALIA'N, M. L., CASTANÉ, P. M.,
SALIBIÁN, A. & OLGUIN, H. F.: Mon-itoring of a polluted river
(Reconquista, Argentina) based on physicochemical parameters and
phytoplankton 2743
MAGNUSON, J. J., WYNNE, R. H., BENSON, B. J. & ROBERTSON, D. M.: Lake
and river ice as a powerfulindicator of past and present climates 2749
ARAI, T.: The hydro-climatological significance of long-term ice
records of Lake Suwa, Japan 2757
KUUSISTO, E. & ELO, A.-R.: Lake and river ice variables as climate
indicators in Northern Europe 2761
LIKENS, G. E.: A long-term record of ice cover for Mirror Lake, New
Hampshire: effects of global warm-ing? 2765
BENSON, B. J., MAGNUSON, J. J., JACOB, R. L. & FUENGER, S. L.:
Response of lake ice breakup in the Northern Hemisphere to the 1976
interdecadal shift in the North Pacific 2770
LIVINGSTONE, D. M.: Large-scale climatic forcing detected in
historical observations of lake ice break-up 2775
ROBERTSON, D. M., WYNNE, R. H. & CHANG, W. Y. B.: Influence of El Niño
on lake and river ice coverin the Northern Hemisphere from 1900 to
1995 2784
ASSEL, R. & HERCHE L.: Coherence of long-term lake ice records 2789
VUGLINSKY, V. S.: Extremely early and late dates of lake freezing and
ice break-up in Russia 2793
KRATZ, T. K., HAYDEN, B. P., BENSON, B. J. & CHANG, W. Y. B.: Patterns
in the interannual variabilityof lake freeze and thaw dates 2796
GRONSKAYA, T. P.: Ice thickness in relation to climate forcing in
Russia 2800
STEWART, K. M.: Annual variability of ice thickness on two lakes in
western New York State 2803
ADRIAN, R. & HINTZE, T.: Effects of winter air temperature on the ice
phenology of the Müggelsee (Berlin, Germany) 2808
GRANIN, N. G., JEWSON, D. H., GNATOVSKY, R. YU., LEVIN, L. A.,
ZHDANOV, A. A., GORBUNOVA, L. A.,T SEKHANOVSKY, V. V., DOROSCHENKO,
L. M. & MOGILEV, N. YU.: Turbulent mixing under ice andthe growth of
diatoms in Lake Baikal 2812
WALSH, S. E., VAVRUS, S. J., FOLEY, J. A. & WYNNE, R. H.: Large-scale
patterns of lake ice phenology and climate: model simulation and
observations 2815
ELO, A.-R. & VAVRUS, S.: Ice modelling calculations, comparison of the
PROBE and LIMNOS models 2816
WYNNE, R. H.: Statistical modeling of lake ice phenology: issues and
implications 2820
LANGELAND, A. & NOST, T.: Epilimnetic feeding and predator avoidance
of roach (Rutilus rutilus) in smalloligotrophic lakes 2826
TANK, J. L., MULHOLLAND, P. J., MEYER, J. L., BOWDEN, W. B., WEBSTER,
J. R. & PETERSON, B. J.: Contrasting food web linkages for the
grazing pathway in three temperate forested streams using 15N as
atracer 2832
BERTONI, R.: Size distribution of particulate organic carbon in Lago
Maggiore 2836
CALLIERI, C.: Carbon flux from picocyanobacteria to ciliates in a
subalpine lake 2840
CIMBLERIS, A. C. P. & KALFF, J.: Heterotrophic bacterial production in
epi- and hypolimnia: a comparative study 2845
ROLAND, F. & COLE, J. J.: Prediction of bacterial growth efficiency in
a riverine ecosystem 2846
SCHIEWER, U., RENTSCH, D. & SCHUMANN, R.: Composition and size
fractions of particulate material inthe polytrophic Darss-Zingst
Lagoon and the coastal area of the southern Baltic Sea 2848
SUN, L., TAKAMURA, N., KIM, B., FUKUSHIMA, M., NAKAGAWA, M. & OTSUKI,
A.: The role of heterotrophicnanoflagellates and ciliates and their
different fates in fishless and fish-stocked ecosystems 2853
BERGSTRÖM, S. E., SVENSSON, J.-E. & WESTBERG, E.: Habitat distribution
of zooplankton in relation tomacrophytes in an eutrophic lake 2861
BLEDZKI, L. A. & ELLISON, A. M.: Effects of water retention time on
zooplankton of shallow rheolimnicreservoirs 2865
BOHMAN, I., HANSSON, M. & HERRMANN, J.: Horizontal diurnal migration
(HDM) of zooplankton - alittoral pelagic coupling? 2870
GARRIDO, A. V. & BOZELLI, R. L.: The study of zooplankton during the
filling of the Serra da Mesa Res-ervoir, Tocantins River (Go, Brazil)
2875
DA GRACA GAMA MELÁO, M. & ROCHA, O.: Productivity of zooplankton in a
tropical oligotrophic reser-voir over short periods of time . 2879
MIKULSKI, A.: Does Daphnia really minimise its size at first
reproduction in the presence of fish? 2888
FLÖDER, S. & SOMMER, U.: An experimental test of the intermediate
disturbance hypothesis using largelimnetic enclosures 2892
O'FARRELL, I. & IZAGUIRRE, I.: Variation in phytoplankton composition
and limnological features in awater-water ecotone of the Lower Paraná
Basin (Argentina) 2894
TREVISAN, R., ZANCAN, S. & NASELLI-FLORES, L.: Phytoplankton
assemblages in two gravel-pit lakes withdifferent morphologies 2895
WATANABE, M. F., PARK, H.-D. & NAKAJIMA, T.: Composition of
Microcystis and microcystins in LakeBiwa 2899
WOELFL, S.: Limnology of sulphur-acidic lignite mining
lakes. Biological properties: plankton structureof an extreme habitat 2904
GILEBBI, S., CAVOLO, F., SALMASO, N. & CORDELLA, P.: Underwater light
measurements and phytoplank-ton content in Lake Garda 2908
GIBSON, C. E., FOY, R. H. & LENNOX, S. D.: The rise and rise of
Planktothrix agardhii in Lough Neagh 1969-1997 2913
JONES, R. I. & YOUNG, J. M.: Control of bacterioplankton growth in
three oligotrophic lakes of differinghumic content 2917
MITAMURA, O.: Nitrogen uptake by pond phytoplankton in the riverbed of
the Yodo River System, Japan 2922
MOCCIA, A., DECET, F. & SALMASO, N.: Plankton and nutrient evolution
of a piedmont reservoir inNorthern Italy (L. Santa Croce) 2929
MORABITO, G. & PUGNETTI, A.: Primary productivity and related
variables in the course of the trophicevolution of Lake Maggiore 2934
PETERSEN, R. R. & SYTSMA, M.: Nitrogen and phosphorus limitation in
Priest Lake, Idaho, USA 2938
PIETILÄINEN, O.-P. & NIINIOJA, R.: Nitrogen and phosphorus as algal
growth limiting factors in a boreallake 2944
TEUBNER, K., TEUBNER, T. & DOKULIL, M. T.: Use of triangular
TN:TP:SRSi-diagrams to evaluate nu-trient ratio dynamics structuring
phytoplankton assemblages 2948
WURTSBAUGH, W. A., MIRACLE, M. R., CAMACHO, A., ARMENGOL, X., SENDRA,
M. L., SANCHIS, D., BORONAT, L. & VICENTE, E.: Nitrogen transport from
a deep-chlorophyll layer via biotic and physicalprocesses: a
whole-lake 15N experiment 2949
CONNOR, T. E. & JONES, R. C.: Zooplankton dynamics in an artificially
destratified reservoir, Lake Bar-croft, Fairfax County, Virginia: a
2-year study 2950
HADAS, O., PINKAS, R., MALINSKY-RUSHANSKY, N., KAPLAN, A., CARMELI,
S. & SUKENIK, A.: The Aphani-zomenon ovalisporum bloom in Lake
Kinneret: ecological and physiological aspects 2954
JONES, R. C.: Long-term trends in summer phytoplankton chlorophyll a
in the tidal freshwater PotomacRiver, USA: relationship to climatic
and management factors 2959
KEBEDE, E.: A seasonal study on the productivity of size-fractionated
phytoplankton in Lake Awassa, atropical lake in the Ethiopian Rift
Valley 2963
KUCZYNSKA-KIPPEN, N.: Seasonal changes of the rotifer community in the
littoral of a polymictic lake 2964
LUGO, A., ALCOCER, J., DEL ROSARIO SÁNCHEZ, M., ESCOBAR, E. & MACEK,
M.: Temporal and spatial var-iation of bacterioplankton abundance in a
tropical, warm-monomictic, saline lake: Alchichica, Puebla, Mexico 2968
ROUEN, M. A., GEORGE, D. G. & HEWITT, D. P.: Using an automatic
monitoring station to assess theimpact of episodic mixing on the
seasonal succession of phytoplankton 2972
TEUBNER, K. & DOKULIL, M. T.: Seasonal dynamics of the surface: volume
ratio of phytoplankton assemblages in several lakes of different
trophies 2977
VIROUX, L.: An attempt to evaluate zooplankton longitudinal dynamics
in a lowland river using a smallstill-standing "potamocorral"
enclosure 2979
YACOBI, Y. Z. & GITELSON, A. A.: Simultaneous remote measurement of
chlorophyll and total seston inproductive inland waters 2983
CAUCHIE, H. M., JOAQUIM-JUSTO, C., HOFFMANN, L., THOMÉ, J. P. & THYS,
I.: A note on the use of fluorescently labelled algae for the
determination of gut passage time in Bosmina and Daphnia 2987
DIÉGUEZ, M. & BALSEIRO, E.: Predation of Paradileptus elephantinus on
rotifers 2992
GALFORD, A. E. & STERNER, R. W.: Correlations and seasonal patterns in
grazing and potential phyto-plankton growth 2996
KURMAYER, R.: Nutritive vs. interfering effects of Anabaena on Daphnia
and Ceriodaphnia 3001
STEINER, S. & KASPRZAK, P.: Cladoceran grazing and the fate of
planktonic primary production in a mesotrophic stratified lake 3005
STERNER, R. W., SCHAMPEL, J. H., SCHULZ, K. L., GALFORD, A. E. &
ELSER, J. J.: Joint variation of zoo-plankton and seston stoichiometry
in lakes and reservoirs 3009
DUNCAN, A., SCHMID, P. E. & KUBECKA, J.: Aspects of spatial dispersion
of coarse fish densities in lowlandrivers by acoustic survey 3015
FLIK, B. J. G.: Size selective feeding of 0+ perch during a period of
diel vertical migration of Daphnia 3019
IGOE, F., BYRNE, C., O'GRADY, M., GARGAN, P., ROCHE, W. & O'NEILL,
J.: The current status of arcticchar (Salvelinus alpinus L.) in the
Lough Corrib catchment, west of Ireland 3020
JANSEN, W., THAM, J., WATZKE, S. & RAHMANN, H.: Habitats and densities
of bullhead (Cottus gobio L.)in a South German bog stream 3021
PONTIUS, R. A. & CULVER, D. A.: Estimating zebra mussel impact on
pelagic food webs: the role of size-specific grazing rates 3025
SAURA, M., FRISK, T., SALLANTAUS, T. & BILALETDIN, Ä.: The effects of
forest fertilization on a small pol-yhumic lake 3029
DE NICOLA, D. M. & STAPLETON, M. G.: Recovery of streams following
passive treatment for acid minedrainage 3034
DE RUITER, M. A., FOKKINK, R. J., HOFSTRA, J. J., LOS, F. J. &
OUBOTER, M. R. L.: Recovery of the Loos-drecht Lakes by large sediment
traps 3040
DIMENTMAN, C., BROMLEY, H. J. & POR, F. D.: Reflooding the old swamps
of Lake Hula (Israel) - emphasis on zooplankton dynamics 3044
CHAPMAN, L. J., CHAPMAN, C. A., CRISMAN, T. L. & PRENGER, J.:
Predictors of seasonal oxygen levels ina Ugandan swamp/river system: a
3-year profile 3048
PATTEE, E., MAAMRI, A. & CHERGUI, H.: Leaf litter processing and its
agents in a temporary Moroccanriver 3054
SPÄNHOFF, B. & MEYER, E. I.: Macroinvertebrate colonization of
submerged wood of different states ofdecay 3058
DANGLES, O. J. & GUÉROLD, F. A.: Feeding activity of Gammarus
fossarum (Crustacea: Amphipoda) inacidic and low mineralized streams 3062
PODRAZA, P., SCHUHMACHER, H. & SOMMERHÄUSER, M.: Composition of
macroinvertebrate feedinggroups as a bioindicator of running water
quality 3066
HELESIC, J. & SCHEIBOVÁ, D.: Bioaccumulation of harmful pollutants in
running water food webs 3070
OGURA, K., INOUE, E., KANKI, S., MIYANOHARA, M. & HIRAO, M.: Fate of
DDT and PCB in some lakesin Japan 3076
PARRIS, J. T., CARMICHAEL, W. W. & JONES, S. B.: In vitro inhibition
of rainbow trout (Oncorhynchusmykiss) brain cholinesterase activity by
anatoxin-a(s), a cyanobacterial neurotoxin: a comparison with
dichlorvos and carbaryl 3082
CHARRIER, C., BRUNET, C., DELCAMBRE, H. & TOUZEAU, C.: Effects of
rapidly varying nutritional conditions on the dynamics of an algal
population 3086
NAKAMOTO, N., YASUDA, M., SAKAI, M. & NOZAKI, K.: Oxygen production
and bubble formation by algalmat on the bed in a slow sand filter pond 3092
OTTO, G. M., CLARK, M. W., WALKER, T. J. & CRISMAN, T. L.:
Reintroduction of wetland functions tothe urban landscape: the
Stormwater Ecological Enhancement Project 3097
YURISTA, P. M., RICE, G. T. & WHITE, D. S.: Long-term establishment of
Daphnia lumholtzi Sars in Kentucky Lake, USA 3102
BUKAVECKAS, P. A., JOURDAIN, E., KOCH, R. & THORP, J. H.: Longitudinal
gradients in nutrients and phy-toplankton in the Ohio River 3107
SABATER, F. & MARTÍ, E.: Towards a holistic view of nutrient dynamics
in fluvial ecosystems 3111
ACOU, A., FEUNTEUN, E., LAFFAILLE, P. & LEGAULT, A.: Catadromous
migration dynamics of Europeaneel (Anguilla anguilla, L.) in a dammed
catchment 3117
MATHISEN, O. A., GOERING, J. J. & FARLEY, E. V.: Nitrogen and carbon
isotope ratios in sockeye salmonsmolts 3121
ANDERSEN, D. O.: Dissolved oxygen concentration in stream waters
draining the catchment of Lake Ter-jevann, SE Norway 3125
MARCHETTI, F., FRAVEZZI, L. & BUESING, N.: Nutrient loading from the
Sarca River into Lake Garda, Italy 3129
RYBAK, J.: Long-term and seasonal dynamics of nutrient export rates
from lake watersheds of diversifiedland cover pattern 3132
KAUP, E., ELLIS-EVANS, J.-C. & BURGESS, J. S.: Increased phosphorus
levels in the surface waters of Bro-knes, Larsemann Hills, Antarctica 3137
KOSKI-VÄHÄLÄ, J. & HARTIKAINEN, H.: Resuspended sediment as a source
and sink for soluble phosphorus 3141
CHÉTELAT, J., PICK, F. R. & MORIN, A.: Patterns of periphyton biomass
in three eastern Ontario riversranging in trophic status 3148
KING, L., JONES, R. I. & BARKER, P. A.: Periphyton response to
nutrient manipulation in an oligotrophiclake (Wastwater, English Lake
District) 3154
KOMULAYNEN, S. F.: Features of periphyton in some rivers of
north-western Russia 3159
UEHLINGER, U.: Periphyton biomass in an unpredictable environment:
exploring the temporal variabilitywith a dynamic model 3162
ALCOCER, J., LUGO, A., ESCOBAR, E., SÁNCHEZ, M. R. & VILACLARA, G.:
Water column stratification andits implications in the tropical warm
monomictic Lake Alchichica, Puebla, Mexico 3166
CARRICK, H. J., PADMANABHA, A., WEAVER, L., FAHNENSTIEL, G. L. &
GOLDMAN, C. R.: Importance of themicrobial food web in large lakes
(USA) 3170
ZALEWSKI, M., WAGNER-LOTKOWSKA, I. & TARCZYNSKA, M.: Ecohydrological
approaches to the elimina-tion of toxic algal blooms in a lowland
reservoir 3176
BOAVIDA, M.-J.: The obscure role of phosphatases in freshwater lakes 3184
GREY, J.: Trophic fractionation and the effects of diet switch on the
carbon stable isotopic "signatures" ofpelagic consumers 3187
MARION, L., FEUNTEUN, E., CARPENTIER, A. & RIGAUD, C.: Modification of
feeding strategies of grey her-ons (Ardea cinerea L.) in response to a
major decline in the preyed fish community's biomass 3192
BARRANGUET, C., JONKER, M., SINKE, J. & ADMIRAAL, W.: Effects of acute
copper contamination on pho-tosynthesis and biomass of periphyton
determined with pulse amplitude modulated fluorescence 3195
LAMPARELLI, M. C., CARVALHO, M. C. & RIBEIRO DE SOUZA, R. C.: Water
and sediment quality as a re-sponse to nutrients and metals (Al, Fe
and Cu) in Guarapiranga Reservoir, Sao Paulo, Brazil 3199
MÜLLER, H.: Evidence of dormancy in planktonic oligotrich ciliates 3206
RICCI, C. & CAPRIOLI, M.: Anhydrobiosis as a fast response to
environmental stress 3210
SNORRASON, S. S.: Life cycle of the mollusc Lymnaea peregra and its
influence on morph formation in Arc-tic charr, Salvelinus alpinus 3214
TAYLOR, W. W., LYNCH, K. D. & TAYLOR, K. W.: Integrating fisheries
management with watershed processes 3218
CHRISTOFFERSEN, K. & BURNS, C. W.: Toxic cyanobacteria in New Zealand
lakes and toxicity to indige-nous zooplankton 3222
VAN DER GRINTEN, E., LÜRLING, M. & BURGER-WIERSMA, T.: Is
Microcystis really toxic to Daphnia? 3226
JÜTTNER, F.: Grazer toxicity of littoral biofilms of diatoms 3230
RIESSEN, H. P.: Predator-induced life history shifts in Daphnia: a
synthesis of studies using meta-analysis 3233
WEBER, A.: The effects of kairomone breakdown on Daphnia life history
- introducing "CAT", the "cueactuality theory" 3234
BÄRLOCHER, F. A.: long-term study of fungal diversity in Catamaran
Brook, a salmon stream in New Brunswick, Canada 3238
BORMANS, M., FORD, P. W., FABBRO, L. & DUIVENVOORDEN, L.: Temporal
changes in nutrients and cyanobacterial populations in a dammed,
stratified tropical river 3239
HIRAISHI, A.: A phylogenetic and chemotaxonomic view of microbial
diversity and natural communitystructure 3243
RÖSKE, I., WOBUS, A. & RÖSKE, K.: Biotic diversity and ecological
stability of biofilms in reactors for advanced waste water treatment 3248
SERRANO, L., PEREZ-ROMERO, P., PLAZUELO, A., TORRES, A. & TOJA, J.:
Microbial degradation of dissolvedpolyphenolic compounds in seasonal
ponds 3254
DODSON, S. I.: Effects of environmental heterogeneity in aquatic
ecology 3260
HAVEL, J. E. & STELZLENI-SCHWENT, J.: Zooplankton community structure:
the role of dispersal 3264
HERSHEY, A. E., GETTEL, G., MCDONALD, M. E., MILLER, M. C., MOOERS,
H., O'BRIEN, W. J., PASTOR,J., R ICHARDS, C. & SCHULDT, J. A.: The
geomorphic-trophic hypothesis for arctic lake food webs 3269
SPRULES, W. G.: Spatial estimates of prey consumption by Mysis relicta
Lovén using an optical planktoncounter 3275