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27th Congress in Dublin 1998

Ed.: William D. Williams

2001. VIII, 804 pages, 17x24cm, 1420 g
Language: English

(Verhandlungen IVL, Volume 27 Part 4)

ISBN 978-3-510-54055-6, paperback, price: 203.00 €

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ALENCAR MAIA, L. M. & JACKSON, M. B.: Morphological and growth
responses of woody plant seedlings to flooding of the central Amazon
floodplain forests 1711
GIRARD, P. & CANDIDO PINTO, M. T.: Hydrodynamic and hydrochemical
behavior of the water table in the Cuiabá River flooded riparian
forest, Brazilian Pantanal 1717
KANG, H. & FREEMAN, C.: Relationship between enzyme activity and the
organic matter content of wet-land soils . 1721
MÜLLER, E. & JUNK, W.: The influence of waterlogging on root water
uptake and transpiration of trees of the Central Amazonian varzea 1725
OTTE, M. L., KENNY, F. J. & DOYLE, M. O.: Accumulation of iron and
other metals in the rhizosphere of wetland plants implications for
biogeochemical processes 1730
PIEDADE, M. T. F., JUNK, W. J. & PAROLIN, P.: The flood pulse and
photosynthetic response of trees in a white water floodplain (várzea)
of the Central Amazon, Brazil 1734
AHLGREN, I., ERIKSON, R., MORENO, L., PACHECO, L.,
MONTENEGRO-GUILLÉN, S. & VAMMEN, K.: Pelagic food web interactions in
Lake Cocibolca, Nicaragua 1740
BERTOLO, A., LESCHER-Moutoué, F. & Lacroix, G.: Interaction effects
of depth and planktivorous fish on plankton biomass 1747
BIZINA, E. V.: Interplay of "top down" and "bottom up" factors in the
regulation of plankton commu-nities in freshwater oligotrophic
ecosystems . 1752
HODGSON, J. Y. & HODGSON, J. R.: Exploring optimal foraging by
largemouth bass (Micropterus sal-moides) from three experimental lakes 1757
KAIRESALO, T., KORNIJÓW, R. & LUOKKANEN, E.: Trophic cascade
structuring a plankton community in a strongly vegetated lake littoral
1763
KILHAM, S. S. & PRINGLE, C. M.: Food webs in two neotropical stream
systems as revealed by stable iso-tope ratios 1768
LATHROP, R. C., CARPENTER, S. R. & ROBERTSON, D. M.: Interacting
factors causing exceptional summer water clarity in Lakes Mendota and
Monona . 1776
MAKAREWICZ, J. C.: Trophic interactions: changes in phytoplankton
community structure coinciding with alewife introduction (Alosa
pseudoharengus) . 1780
SCHUM, J. E. & MALY, E. J.: Complex interactions among aquatic insect
larvae and Daphnia in a small pond ecosystem 1784
BARBIERO, R. P., CARRICK, H. J., VOLERMAN, J. B. & TUCHMAN, M. L.:
Factors affecting temporal and spatial distribution of diatoms in Lake
Michigan . 1788
JENSEN, K. H. & LARSSON, P.: Experimental field and laboratory tests
of food search in Daphnia pulex . 1795
LARSSON, P., AASEN, C., CIEPLINSKA, T., FREITAS, R. & FULLWOOD, C. F.:
Aggregation and swimming speed of daphniids in a homogeneous
environment 1803
MORALES-BAQUERO, R. & CONDE-PORCUNA, J. M.: Effect of the catchment
areas on the abundance of zo-oplankton in high mountain lakes of the
Sierra Nevada (Spain) . 1804
CULVER, D. A., EDWARDS, W. J. & BABCOCK-JACKSON, L.: Preventing the
introduction of zebra mussels during aquaculture and fish stocking
activities 1809
TEMPORETTI, P., LOPEZ, W., GONZALEZ LUCAS, P. & PEDROZO, F.:
Limnological effects of intensive aqua-culture on lakes and reservoirs
and reduction of nutrient input 1812
MCCARTHY, T. K., BARBIERO, R. P., KING, J., DOHERTY, D., O'CONNOR,
B. & CULLEN, P.: Water quality monitoring in some larger western Irish
lakes .1816
SKRIVER, J., FRIBERG, N. & KIRKEGAARD, J. Biological assessment of
running waters in Denmark: intro-duction of the Danish Stream Fauna
Index (DSFI) . 1822
COTNER, J. B.: Heterotrophic bacterial growth and nutrient limitation
in large oligotrophic lakes and oceans . 1831
FAHNENSTIEL, G. L., LOHRENZ, S. E., KELLY, K., MILLIE, D. F. &
SCHOFIELD, O. M. E.: Light absorption characteristics of individual
phytoplankton cells from a natural community: examples from Lake
Michigan during the winter period . 1836
KERFOOT, W. C., MCNAUGHT, A. S. & JARNAGIN, S. T.: Invertebrate
predators and fish: biogeographic patterns and fish dispersal of
resting eggs . 1841
MCNAUGHT, D. C.: Adaptations of calanoid omnivores to life in large
cold lakes . 1851
SCHULZ, K. L. & STERNER, R. W.: Zooplankton food quality in large
lakes growth of Daphnia on high P content seston from Lake Superior
1855
BERGSTRÖM, A.-K., JANSSON, M., BLOMQVIST, P. & DRAKARE, S.: The
influence of water colour and effec-tive light climate on mixotrophic
phytoflagellates in three small Swedish dystrophic lakes . 1861
DOS S. FURTADO, A. L., DE A. ESTEVES, F. & CASPER, P.: Heterotrophic
bacterial production in a Brazilian humic coastal lagoon 1866
HEIKKINEN, E. & KAIRESALO, T.: Autumnal microbial decomposition of
emergent macrophytes in different littoral zones . 1870
KOSTRZEWSKA-SZLAKOWSKA, I.: Air water interface in lakes: relations to
in-lake trophism . 1871
LAMMERS, W. T.: Bacteriophage interaction with different bacterial
species 1875
PASSONI, S. & CALLIERI, C.: Picocyanobacteria single forms, aggregates
and microcolonies: survival strategy or species succession? . 1879
PICK, F. R.: Predicting the abundance and production of photosynthetic
picoplankton in temperate lakes 1884
PINHEIRO, A. & FIDALGO, M. L.: Contribution for the study of
bacterioplankton of the River Minho Estuary (Portugal) 1890
TAN, L., SUTER, P. & CLOSS, G.: Microhabitat partitioning by
freshwater testate amoebae (Protozoa: Rhizopoda) on Vallisneria
gigantea leaves in an Australian billabong (oxbow lake): preliminary
re-sults on community succession mechanisms on a micro-scale . 1894
ZUNINO, L. & DIAZ, M.: Autotrophic picoplankton along a trophic
gradient in Andean Patagonian lakes 1895
DE STASIO, JR., B., HILLEBRAND, E. & RADECKI, B.: Ecological genetics
of Daphnia in permanent lakes in northeastern Wisconsin, USA . 1900
ERBEN, R., PETERNEL, R., MAGUIRE, I., KLOBUCAR, G. I. V. & LAJTNER,
J.: Rotifer fauna in Modrac reservoir (Bosnia and Herzegovina) 1906
GILBERT, J. J. & BURNS, C. W.: Day and night vertical distributions of
Conochilus and other zooplankton in a New Zealand reservoir . 1909
SCHULZE, P. C., ZAGARESE, H. E. & WILLIAMSON, C. E.: A simple in situ
continuous culture system for zooplankton 1915
SPAAK, P., EGGENSCHWILER, L. & BÜRGI, H. R.: Genetic variation and
clonal differentiation in the Daphnia population of the Greifensee, a
pre-alpine Swiss lake . 1919
ANDREW, T. E.: Seasonal variation in egg size and density of
crustacean zooplankton in Lough Neagh, Northern Ireland . 1924
ARVOLA, L. & NURMESNIEMI, A.: Seasonal dynamics of plankton in two
boreal rivers in northern Finland 1928
HART, R. C., Comparative long-term periodicity of Diaphanosoma excisum
in adjacent warm-water impoundments, with an evaluation of
contributory factors . 1933
MEILI, M., JONSSON, A. & JANSSON, M.: Seasonal dynamics of plankton
and stable carbon isotopes (d13C) in a large humic lake (Örträsket,
N. Sweden) . 1940
O'KEEFE, T. C. & DODSON, S. I.: Long-term population dynamics of
zooplankton in northern temperate lakes 1943
VAN VUUREN, S. J. & PIETERSE, A. J. H.: Seasonal and spatial aspects
of phytoplankton in the Vaal River, a turbid and polluted river in
South Africa . 1946
BRAZNER, J. C., SIERSZEN, M. E., KEOUGH, J. R. & TANNER, D. K.:
Assessing the ecological importance of coastal wetlands in a large
lake context 1950
STANLEY, K. E., MURPHY, P. G., PRINCE, H. H. & BURTON, T. M.:
Above-ground biomass and productivity of the vegetation in coastal
wet meadows bordering Saginaw Bay (Lake Huron) 1962
BEYRUTH, Z.: Phytoplankton of a supply reservoir impacted by anthropic
activities: Guarapiranga Reservoir, São Paulo, Brazil, 1991
BACA, R. M. & THRELKELD, S. T.: Experimental test of nutrient and fish
effects on size distributions of N:P . 1981
CHAMPION, M. & CURRIE, D. J.: Phosphorus chlorophyll relationships in
lakes, rivers and estuaries . 1986
LE ROUZIC, B.: Resource sharing and algal community response in
enrichment bioassays . 1990
SZÁSZ, E. & PETTERSSON, K.: Nitrogen uptake and fixation by
phytoplankton in Lake Erken (Sweden) during summer 1995
ARTS, M. T., RAI, H. & TUMBER, V. P.: Effects of artificial UV-A and
UV-B radiation on carbon allocation in Synechococcus elongatus
(cyanobacterium) and Nitzschia palea (diatom) 2000
DE LANGE, H. J., VAN DONK, E. & HESSEN, D. O.: In situ effects of UV
radiation on four species of phytoplankton and two morphs of Daphnia
longispina in an alpine lake (Finse, Norway) . 2008
FORSTER, R. M. & SCHUBERT, H.: Predicting UV-B effects at the
community level the mesocosm approach . 2014
KASAI, F., WAISER, M. J., ROBARTS, R. D. & ARTS, M. T.: Size-dependent
UVR sensitivity in Redberry Lake phytoplankton communities 2018
LACOURSIÈRE, J. O. & HEINTZENBERG, F.: Effects of enhanced UV-A and
UV-B radiation on dispersal and drift behaviour of blackfly larvae
(Simulium vittatum): preliminary data . 2024
SOMMARUGA, R. & GARCIA-PICHEL, F.: UV-absorbing mycosporine-like
substances in planktonic and benthic organisms from a high-mountain
lake . 2030
VAN DONK, E., DE LANGE, H. J. & FAAFENG, B. A.: Impact of UV-radiation
on grazing activity of Daphnia middendorffiana and use of
Chlamydomonas reinhardtii as UV-biodosimeter in an arctic freshwater
lake (Spitsbergen, Norway) 2031
WETZEL, R. G.: Natural photodegradation by UV-B of dissolved organic
matter of different decomposing plant sources to readily degradable
fatty acids . 2036
FARIAS, M. & PIEDADE, M. T. F.: Chlorophyll content of Echinochloa
polystachya under management in the várzea of the Central Amazon 2044
MCCOMAS, S. & STUCKERT, J.: Pre-emptive cutting as a control technique
for nuisance growth of curly-leaf pondweed, Potamogeton crispus . 2048
WALDHOFF, D., JUNK, W. J. & FURCH, B.: Comparative measurements of
chlorophyll a fluorescence pa-rameters of Nectandra amazonum under
different environmental conditions in climate-controlled chambers 2052
AUVINEN, H., KARJALAINEN, J. & VILJANEN, M.: Fluctuation of year-class
strength of vendace (Coregonus albula (L.)) in Lake Onkamo, eastern
Finland 2057
BROSSE, S. & LEK, S.: Ontogenetic microhabitat shifts of 0+ rudd
(Scardinius erythrophthalamus L.) in the littoral zone of a
mesotrophic lake 2063
BYRNE, C., IGOE, F., COOKE, D., O'GRADY, M. & GARGAN, P.: The
distribution of the brook lamprey (Lampetra planeri, Bloch) in the
Lough Corrib catchment in the west of Ireland and some aspects of its
biology and ecology 2066
GIBSON, J. R. & COLBO, M. H.: The response of salmonids and aquatic
invertebrates to urban influenced enrichment in a Newfoundland river,
Canada . 2071
HESTHAGEN, T., AASTORP, G., LANGÅKER, R. M., FARSTAD, M. & BERGER,
H. M.: Responses of brown trout (Salmo trutta L.) to acidification and
excess critical loads in lakes of western Norway with low ionic
content 2079
OSTROVSKY, I. & WALLINE P.: Multiannual changes in population
structure and body condition of the pelagic fish Acanthobrama
terraesanctae in Lake Kinneret (Israel) in relation to food sources
2090
ROSELL, R. S. & GIBSON, C. E.: Interlinked changes in fish populations
and their environments in Lower Lough Erne, Northern Ireland 2095
TADESSE, Z.: Seasonal changes in the nutritional status of Oreochromis
niloticus L. diet in two Ethiopian Rift Valley Lakes, Chamo and
Langeno . 2100
ZAUNER, G. & EBERSTALLER, J.: Classification scheme of the Austrian
fish fauna based on habitat requirements . 2101
BARROS, P., FIDALGO, M. L. & SOARES, A. M. V. M.: Sub-lethal effects
of Microcystis aeruginosa on Daphnia magna after an acute exposure
2107
CORVES, J. & JÜTTNER, F.: Glucosidase inhibitory activity in natural
photoautotrophic biofilms of lakes and rivers 2111
GROSS, E. M.: Seasonal and spatial dynamics of allelochemicals in the
submersed macrophyte Myriophyllum spicatum L . 2116
HARDING, W. R.: Eradication of a freshwater cyanobacterial
(Microcystis aeruginosa) bloom, causing accu-mulation of hepatotoxins
in marine filter feeders (Choromytilus meridionalis and Mytilus
galloprovin-cialis), using artificial salinity enhancement . 2120
LÜRLING, M., VAN DONK, E. & BEEKMAN-LUKASSEN, W.: Algal concentration
affects grazer-induced colony formation in Scenedesmus obliquus
(Turpin) Kützing (Chlorophyceae) . 2124
VON ELERT, E.: Fatty acids released by Daphnia: do they induce colony
formation in Scenedesmus acutus 2128
YAMAMOTO, Y., SAKATA, T. & TANAKA, K.: Effect of light on geosmin
production of myxobacterial strains isolated from eutrophic lakes 2132
CAMPBELL, I. C. & PARNRONG, S.: Limnology in Thailand: present status
and future needs 2135
CHACON-TORRES, A.: An integrated plan for lake restoration and
sustainable management for Latin America 2142
CHIKITA, K., JOSHI, S. P., JHA, J. & HASEGAWA, H.: The expansion
mechanism of supraglacial lakes in the Nepal Himalaya . 2145
DAVIES, B. R., BEILFUSS, R. D. & THOMS, M. C.: Cahora Bassa
retrospective, 1974--1997: effects of flow regulation on the
Lower Zambezi River .2149
JONES, J. R., PERKINS, B. D., WITT, JR., A., KAISER, M. S., THAMASARA,
S., SIRIWORAKUL, M. & BENYASUT, P.: Limnological characteristics of
some reservoirs in Thailand 2158
ZUTSHI, D. P. & GOPAL B.: Himalayan lake ecosystems: current issues
and threat perceptions 2167
PUIGSERVER, M., RAMON, G. & MOYÀ, G.: Effect of a flow disturbance on
the phytoplankton of a Mediterranean inland seawater interaction
system . 2171
RAMON, G., PUIGSERVER, M. & MOYÀ, G.: Particulate organic matter and
phytoplankton in a fresh salt-water interaction system on Mallorca
Island (Spain) 2177
SÁNCHEZ-MARTOS, F., MOLINA-SÁNCHEZ, L. & AGUILERA-AGUILERA, P.:
Relationship between groundwater and brines in the Cerillos Saltworks
(Almeria, southern Spain) . 2182
DE HOYOS, C., COMÍN, F. A. & VEGA, J. C.: The heat budget of Lake
Sanabria (NW Spain) 2186
GAMMETER, S. & ZIMMERMANN, U.: Changes in phytoplankton productivity
and composition during reoligotrophication in two Swiss lakes 2190
HOLOPAINEN, A.-L., VILJANEN, M. & LEMPINEN, R.: Fluorometer and CTD
monitoring of the Vuoksi drainage basin, eastern Finland 2194
KAGAWA, H., FUKURODA, Y. & HIROTANI, H.: Nutritive elements in
sediment in relation to chlorophyll concentration in the epilimnion of
a reservoir 2198
KLEEBERG, A.: Sulfur losses through sulfide formation in sediment
traps in dimictic eutrophic Lake Scharmützelsee, NE Germany 2203
LESSMANN, D. & NIXDORF, B.: Acidification control of phytoplankton
diversity, spatial distribution and trophy in mining lakes 2208
NIINIOJA, R., HOLOPAINEN, A.-L., HUTTULA, T., SIPURA, J., RÄMÖ, A. &
MONONEN, P.: Water chemistry, phytoplankton and hydrodynamics in Lake
Pielinen, eastern Finland . 2212
PERKINS, B. D. & JONES, J. R.: Limnological characteristics of Lake of
the Ozarks, Missouri III: seasonal patterns in nutrients, chlorophyll
and algal bioassays 2218
SEBETICH, M. J. & HORNER-NEUFELD, G.: Terrestrial litterfall as a
source of organic matter in a mesotrophic lake 2225
SORIA, J. M., VICENTE, E. & MIRACLE, M. R.: The influence of flash
floods on the limnology of the Albufera of Valencia lagoon (Spain)
2232
WEMMER, R. & BYDÉN, S. Water exchange between connected lakes . 2236
WOOD, R. B., ANDREW, T. E. & CARTER, C. E.: Lough Neagh eutrophic,
temperate, shallow behaving as an oligotrophic, cold deep lake? 2240
FIDALGO, M. L. & ANNE, I.: Improvement in bacterial river water
quality from wastewater treatment 2243
KAPOOR, A. & MEHRA, N. K.: Phenol biodegradation by microbial
consortia immobilized on brick pieces 2249
SLÁDECKOVÁ, A.: Microscopic evaluation of drinking-water quality 2252
ASHLEY, K. I.: Recent advances in hypolimnetic aeration design . 2256
BAHHOU, J., ALAOUI MHAMDI, M. & ALEYA, L.: Annual changes in the
biochemical composition of the phytoplankton in the Idris First
Reservoir (Fez, Morocco) . 2261
EVERARD, M.: The sustainable water cycle: underpinning principles and
management practice . 2269
GOMA, R. H., OTSUKI, A. & NOJIRI, Y.: Seasonal and spatial variations
of dissolved organic nitrogen, urea and dissolved free amino acids in
a eutrophic lake 2272
KAWANISHI, H.: Water balance study of springs . 2279
KOBAYASHI, M., KITAOKA, K., YOSHIOKA, R. & HORIUCHI, K.: Groundwater
flow discharging into a lake estimated by natural isotopes 2283
LÓPEZ, E.: Regional limnology of ten reservoirs in the Lerma Basin,
México . 2288
MARTÍNEZ-TABERNER, A., CAREY, P. & SINTES, E.: Physico chemical and
biological data of meromictic anchihaline cave lagoons . 2294
VICENTE, E., CAMACHO, A., SENDRA, M. D., SANCHIS, D., SORIA, J. M.,
DASÍ, M. J. & MIRACLE, M. R.: Limnological management of the Amadorio
Reservoir (Spain) during an extremely dry summer 2298
NOWLAN, N. V., MITCHELL, P. I., MURRAY, D. A., LEÓN VINTRÓ, L. &
SEYMOUR, E. M.: Measurement and interpretation of 210 Pb, 137 Cs, 134
Cs and 241 Am profiles in relation to sedimentation in some Irish
lakes 2303
O'SULLIVAN, P., COOPER, M., SHINE, A., HUCKERBY, E., MATTHEWS, N.,
SALTER, N., HENON, D., JONES, V., WILLIAMS, T., NICHOLSON, M.,
SANDFORD, R. & MORRIS, A.: Long-term response of Loch Ness, Scotland,
to changes in inputs from its catchment 2307
ROOD, B. E., DELFINO, J. J. & GOTTGENS, J. F.: Bathymetry,
paleolimnology and mercury accumulation in a sinkhole lake in the
Florida Everglades, USA 2312
WEYHENMEYER, G. A. & MEILI, M.: Hypolimnetic lake sediments in
frequent motion 2317
DICKENS, C.: Implementing a river health monitoring programme in South
Africa 2323
EDWARD, D. H. D., STOREY, A. W. & SMITH, M. J. B.: Assessing river
health in south-western Australia: comparison of macroinvertebrates at
family level with Chironomidae at species level . 2326
GOPAL, B. & ZUTSHI, D. P.: Aquatic ecosystem health: an Indian
perspective 2336
MURPHY, T. P., LAWSON, A., RANCOURT, D. G., KUMAGAI, M. & SAKAI, M.:
Akanoi Bay, Lake Biwa sea-sonal changes in porewater phosphorus 2340
WILLE, S. A. & LOBDELL, C. M.: The role of the U.S. Fish and Wildlife
Service in the implementation of Federal Flood Response in Oregon,
U.S.A 2343
ZARULL, M. A. & HARTIG, J. H.: Quantifying aquatic ecosystem health
targets . 2346
ZARULL, M. A. & HARTIG, J. H.: Aquatic ecosystem response to
rehabilitative measures taken in the Great Lakes Areas of Concern 2349
HALL, JR., R. O. & LIKENS, G. E.: Ecological implications of high
discharge variability in streams of the Hubbard Brook Experimental
Forest .2353
HIGLER, L. W. G., VERDONSCHOT, P. F. M. & MARTIN, D.: Implications of
catchment hydrology for ecosystems in small streams 2359
BETTINETTI, R., COLOMBO, S. & ROSSARO, B.: Cytogenetic characteristics
of different populations of Chironomus riparius Meigen, 1804. 2363
DIGGINS, T. P.: Cluster analysis of the Chironomidae of the polluted
Buffalo River, New York, USA 2367
GONÇALVES, JR., J. F., ESTEVES, F. A. & CALLISTO, M.: Succession and
diversity of Chironomidae in detritus of Typha domingensis in a
coastal lagoon (Parque Nacional da Restinga de Jurubatiba, State of
Rio de Janeiro, Brazil) . 2374
HIRABAYASHI K. & OKINO, T.: Massive flights of chironomid midges
(Diptera) as nuisance insects and plans for their control in
hyper-eutrophic Lake Suwa in Japan 2378
MCLARNON, L. A. & CARTER, C. E.: Chironomidae in Lough Neagh, Northern
Ireland 2383
ROSSARO, B. & BETTINETTI, R.: Chironomid distribution in north-western
Italian glacial streams and cold springs . 2388
STEINHART, M.: The life cycle of Hydrobaenus lugubris Fries, 1830, a
chironomid (Diptera) species dwelling in temporary waters 2392
BECKER, G. & HOLFELD, H.: Response of trichopteran grazers to unialgal
layers 2396
BRENDELBERGER, H.: Predation by an invertebrate and a vertebrate
predator on different size classes of two freshwater gastropods . 2398
CROWL, T. A., BOUWES, N., TOWNSEND, M. J., COVICH, A. P. & SCATENA,
F. N.: Estimating the potential role of freshwater shrimp on an
aquatic insect assemblage in a tropical headwater stream: a
bioenergetics approach 2403
WELCH, E. B., ANDERSON, E. L., JACOBY, J. M., BIGGS, B. J. F. & QUINN,
J. M.: Invertebrate grazing of filamentous green algae in outdoor
channels 2408
GUMIERO, B., CRISTONI, C. & SALMOIRAGHI, G.: Decomposition processes
of alder leaves downstream of the Ridracoli Dam (Apennines, Italy)
. 2415
GUMIERO, B., BOSCAINI, A., CRISTONI, C., FRANCESCHINI, A. &
SALMOIRAGHI, G.: Leaf colonization by aquatic macrobenthos: a
comparison between Alpine and Apennine streams 2420
SUBERKROPP, K.: Estimating production of litter-decomposing fungi in
streams from rates of acetate incorporation into ergosterol . 2426
COVICH, A. P., CROWL, T. A. & SCATENA, F. N.: Linking habitat
stability to floods and droughts: effects on shrimp in montane
streams, Puerto Rico 2430
HOLLAND, M. M. & BURK, C. J.: Effects of catastrophic flooding on
floodplain forest succession . 2435
MARZOLF, G. R., BOWSER, C. J. & HART, R. J.: The withdrawal zone in
Lake Powell reservoir during a controlled flood through Glen Canyon
Dam on the Colorado River Arizona, USA . 2440
MUTZ, M.: Near-bed flow of a quasi-natural lowland stream . 2444
O'HARE, M. T., ERVINE, D. A. & MURPHY, K. J.: Benthic invertebrate
flow preferences in an upland Scot-tish stream 2448
PETERSON, C. G., VALETT, M. H., DAHM, C. N. & MARSHALL, M. C.:
Heterogeneity in algal grazer associations in a small montane spring
. 2453
SILVA-FILHO, M. I. & MALTCHIK, L.: Stability of macroinvertebrates to
hydrological disturbance by flood and drought in a Brazilian semiarid
river (NE Brazil) . 2461
AHERNE, J. & FARRELL, E. P.: Sensitivity of Irish lakes to
acidification 2467
ALLOTT, N. & BRENNAN, M.: Nature and origin of acid episodes in
western Ireland . 2471
GELLER, W., FRIESE, K., HERZSPRUNG, P., KRINGEL, R. & SCHULTZE, M.:
Limnology of sulphur-acidic lignite mining lakes. II. Chemical main
constituents and buffering systems 2475
RIISE, G., HONGVE, D., GABESTAD, H. & KROGSTIE, H. A.: Recovery of
acidified lakes in Østmarka, Norway . 2480
SCHARTAU, A. K. L., WALSENG, B., NØST, T. & HALVORSEN, G.: Freshwater
crustaceans as monitors of long-range transported air pollutants 2484
STEINBERG, C. E. W., HAITZER, M., HÖSS, S., PFLUGMACHER, S. & WELKER,
M.: Regulatory impact of humic substances in freshwaters . 2488
GRIEBLER, C. & SLEZAK, D.: Microbial DMSO reduction is widespread
among microorganisms and is therefore proposed as a reliable activity
parameter 2492
HILLBRICHT-ILKOWSKA, A.: Liming a humic acid lake: long-term impact on
biodiversity and water quality 2498