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1. Der Einfluss von Membranfiltration oder Autoklavieren auf die Ernte von Raphidonema spiculiforme Vischer

Author:
Schanz, F.
Source:
Hydrobiologia 1977 v.53 no.2 pp. 99-105
ISSN:
0018-8158
Subject:
plant physiology; plant biochemistry
DOI:
10.1007/BF00029287

2. Etude hydrobiologique des lagunes du nord de la Tunisie

Author:
Savoure, B.
Source:
Hydrobiologia 1978 v.57 no.1 pp. 3-10
ISSN:
0018-8158
Subject:
phytoplankton; Tunisia
DOI:
10.1007/BF00018621

3. Effets du rubidium et du cesium sur la croissance et la nutrition minerale des characees

Author:
Strauss, R.
Source:
Hydrobiologia 1980 v.71 no.1/2 pp. 87
ISSN:
0018-8158
Subject:
Chara vulgaris
DOI:
10.1007/BF00005831

4. Influence de la concentration en ions H2PO4- du milieu sur la croissance et la composition minerale de deux Characees

Author:
Strauss, R.
Source:
Hydrobiologia 1981 v.76 no.3 pp. 229-232
ISSN:
0018-8158
Subject:
Chara vulgaris
DOI:
10.1007/BF00006213

5. Colonisation par les micro-organismes, evolution chimique des feuilles de differentes especes d'arbres (peuplier, aulne, myrique) dans des eaux oligotrophes du Bouclier canadien et incidence sur leur utilisation par les macro-invertebres

Author:
Richard, Y.; Laflamme, N.; Moreau, G.
Source:
Hydrobiologia 1982 v.96 no.1 pp. 65-75
ISSN:
0018-8158
Subject:
Myrica gale; marine environment; Populus tremuloides; Alnus incana subsp. rugosa; Quebec
DOI:
10.1007/BF00006279

6. Community photosynthesis and respiration in experimental streams

Author:
Sheldon, S.P.; Taylor, M.K.
Source:
Hydrobiologia 1982 v.87 no.1 pp. 3-10
ISSN:
0018-8158
Subject:
freshwater
DOI:
10.1007/BF00016656

7. Convection in bottom sediments and its role in material exchange between water and sediments

Author:
Lappalainen, K.M.
Source:
Hydrobiologia 1982 v.86 no.1/2 pp. 105-108
ISSN:
0018-8158
Subject:
ponds; lakes; Finland
DOI:
10.1007/BF00005795

8. Dynamics of a subtropical plankton community, with empnasis on the copepod Mesocyclops edax

Author:
Wyngaard, G.A.; Elmore, J.L.; Cowell, B.C.
Source:
Hydrobiologia 1982 v.89 no.1 pp. 39-48
ISSN:
0018-8158
Subject:
ponds; lakes; Florida
DOI:
10.1007/BF00017536

9. Enrichissement experimental d'eaux printanieres de claires a huitres en baie de Bourgneuf (Vendee, France): augmentation de la biomasse et utilisation des elements nutritifs par les algues unicellulaires

Author:
Robert, J.M.; Maestrini, S.Y.; Heral, M.; Rince, Y.; Dreno, J.P.; Beker, L.
Source:
Hydrobiologia 1982 v.96 no.1 pp. 53-63
ISSN:
0018-8158
Subject:
marine environment; France
DOI:
10.1007/BF00006278

10. Etude des migrations verticales journalieres du phytoplancton a l'aide d'enceintes placees dans un etang peu profond

Author:
Le Cohu, R.
Source:
Hydrobiologia 1982 v.87 no.2 pp. 97-111
ISSN:
0018-8158
Subject:
ponds; lakes
DOI:
10.1007/BF00015192

11. Fish impact on rotifer community structure

Author:
Stenson, J.A.E.
Source:
Hydrobiologia 1982 v.87 no.1 pp. 57-64
ISSN:
0018-8158
Subject:
ponds; lakes; Sweden
DOI:
10.1007/BF00016662

12. Fish stock assessments in Lake Konnevesi

Author:
Toivonen, J.; Auvinen, H.; Valkeajarvi, P.
Source:
Hydrobiologia 1982 v.86 no.1/2 pp. 219-222
ISSN:
0018-8158
Subject:
ponds; lakes; Finland
DOI:
10.1007/BF00005814

13. Impact de la pollution sur les communautes zooplanctoniques dans la zone d'epandage de l'emissaire urbain de Marseille

Author:
Champalbert, G.; Patriti, G.
Source:
Hydrobiologia 1982 v.89 no.1 pp. 17-27
ISSN:
0018-8158
Subject:
marine environment; France
DOI:
10.1007/BF00017534

14. Nutrient dependence of phytoplankton production in brown-water lakes with special reference to Lake Paijanne

Author:
Granberg, K.; Harjula, H.
Source:
Hydrobiologia 1982 v.86 no.1/2 pp. 129-132
ISSN:
0018-8158
Subject:
ponds; lakes; Finland
DOI:
10.1007/BF00005799

15. Occurrence, distribution and seasonality of aquatic fungi as affected by chemical factors in six alkaline ponds of India

Author:
Misra, J.K.
Source:
Hydrobiologia 1982 v.97 no.2 pp. 185-191
ISSN:
0018-8158
Subject:
ponds; lakes; India
DOI:
10.1007/BF00011973

16. Seasonal changes in fat and fatty acid composition of Limnothrissa miodon Boulenger (Pisces: Clupeiformes) from Lake Tanganyika, with reference to their nutritive value

Author:
Deelstra, H.A.; Cauwenberghe, K. van.
Source:
Hydrobiologia 1982 v.89 no.2 pp. 123-127
ISSN:
0018-8158
Subject:
ponds; lakes; Africa
DOI:
10.1007/BF00006165

17. Seasonal succession of phytoplankton in an ice-free pond warmed by a thermal power plant

Author:
Eloranta, P.
Source:
Hydrobiologia 1982 v.86 no.1/2 pp. 87-91
ISSN:
0018-8158
Subject:
ponds; lakes; Finland
DOI:
10.1007/BF00005792

18. Sedimentary losses of phosphorus in some natural and artificial Iowa lakes

Author:
Canfield, D.E. Jr.; Jones, J.R.; Bachmann, R.W.
Source:
Hydrobiologia 1982 v.87 no.1 pp. 65-76
ISSN:
0018-8158
Subject:
ponds; lakes; Iowa
DOI:
10.1007/BF00016663

19. Utilisation des feuilles de differentes especes d'arbres (peuplier, aulne, myrique) par la faune benthique dans des eaux oligotrophes du Bouclier canadien

Author:
Richard, Y.; Moreau, G.
Source:
Hydrobiologia 1982 v.96 no.1 pp. 77-89
ISSN:
0018-8158
Subject:
Myrica gale; marine environment; Alnus incana subsp. rugosa; Quebec
DOI:
10.1007/BF00006280

20. Vertical profiles of primary productivity, biomass and physicochemical properties in meromictic Big Soda Lake, Nevada, U.S.A

Author:
Priscu, J.C.; Axler, R.P.; Carlton, R.G.; Reuter, J.E.; Arneson, P.A.; Goldman, C.R.
Source:
Hydrobiologia 1982 v.96 no.2 pp. 113-120
ISSN:
0018-8158
Subject:
ponds; lakes; Nevada
DOI:
10.1007/BF02185426

21. Winter microbial activity in Lake Tuusulanjarvi

Author:
Tamminen, T.
Source:
Hydrobiologia 1982 v.86 no.1/2 pp. 109-113
ISSN:
0018-8158
Subject:
ponds; lakes; Finland
DOI:
10.1007/BF00005796

22. The management of fisheries in Lake Vortsjarv

Author:
Pihu, E.; Maemets, A.
Source:
Hydrobiologia 1982 v.86 no.1/2 pp. 207-210
ISSN:
0018-8158
Subject:
ponds; lakes; Estonia
DOI:
10.1007/BF00005812

23. An oxygen model for Lake Haukivesi

Author:
Frisk, T.
Source:
Hydrobiologia 1982 v.86 no.1/2 pp. 133-139
ISSN:
0018-8158
Subject:
ponds; lakes; Finland
DOI:
10.1007/BF00005800

24. The population dynamics of eyeflukes Diplostomum spathaceum and Tylodelphys clavata (Digenea: Diplostomatidae) in rainbow and brown trout in Rutland Water: 1974-1978

Author:
Moody, J.; Gaten, E.
Source:
Hydrobiologia 1982 v.88 no.1-2 pp. 207-209
ISSN:
0018-8158
Subject:
population ecology; Diplostomum spathaceum; England
Abstract:
... Diplostomum spathaceum, Tylodelphys clavata, incidence and mean number of flukes in trout and coarse fish, relationship to availability of snail host (Lymnaea pereger) and to differential resistance of rainbow and brown trout ...
DOI:
10.1007/BF00008315

25. A principal components analysis of the phytoplankton from a pond in the Parana River Valley, Argentia

Author:
Emiliani, M.O.G. de.; Depetris, P.J.
Source:
Hydrobiologia 1982 v.89 no.2 pp. 117-122
ISSN:
0018-8158
Subject:
ponds; lakes; Argentina
DOI:
10.1007/BF00006164

26. The temperatures of nine flowing waters in southern England

Author:
Crisp, D.T.; Matthews, A.M.; Westlake, D.F.
Source:
Hydrobiologia 1982 v.89 no.3 pp. 193-204
ISSN:
0018-8158
Subject:
freshwater; England
DOI:
10.1007/BF00005705

27. Effect of temperature on embryonic development and reproduction of the freshwater snail Lymnaea luteola Troshel (Gastropoda), a vector of schistosomiasis

Author:
Parashar, B.D.; Kumar, A.; Rao, K.M.
Source:
Hydrobiologia 1983 v.102 no.1 pp. 45-49
ISSN:
0018-8158
Subject:
Lymnaea; embryogenesis; freshwater; reproduction; schistosomiasis; snails; temperature
Abstract:
... The effect of temperature on embryonic development and reproduction ofLymnaea luteola was studied. This snail did not develop completely and failed to reproduce at 15 °C and 40 °C. The temperature range of 25 °C–35 °C was observed to be optimum for development and reproduction of this snail. The utility of this study in predicting seasonal fluctuations of snail population in nature is discussed. ...
DOI:
10.1007/BF00006047

28. Egg laying and growth in Helisoma duryi (Wetherby) (Pulmonata: Planorbidae): Effect of population density and mode of fertilization

Author:
Madsen, H.; Thiongo, F.W.; Ouma, J.H.
Source:
Hydrobiologia 1983 v.106 no.2 pp. 185-191
ISSN:
0018-8158
Subject:
Trematoda; schistosomiasis; biological control
Abstract:
... Helisoma duryi proposed as biological control agent for schistosomiasis, studies of egg laying and growth indicate that repeated introductions may be necessary in unstable habitats and frequent surveys to follow the populations are needed but unintended spread should be easy to prevent ...
DOI:
10.1007/BF00006750

29. Fish parasitism in a new impoundment and differences upstream and downstream

Author:
Mackie, G.L.; Morton, W.B.; Ferguson, M.S.
Source:
Hydrobiologia 1983 v.99 no.3 pp. 197-205
ISSN:
0018-8158
Subject:
ecology; Ontario
Abstract:
... fish parasites, species composition, prevalence rate, and intensity in new impoundment compared with those in upstream and downstream localities ...
DOI:
10.1007/BF00008771

30. Individual culture and experimental population dynamics of Keratella cochlearis (Rotatoria)

Author:
Walz, N.
Source:
Hydrobiologia 1983 v.107 no.1 pp. 35-45
ISSN:
0018-8158
Subject:
animals; aquatic organisms; aquaculture
DOI:
10.1007/BF00126701

31. Microsporidiosis in a Daphnia pulex population

Author:
Brambilla, D.J.
Source:
Hydrobiologia 1983 v.99 no.3 pp. 175-188
ISSN:
0018-8158
Subject:
population ecology; Michigan
Abstract:
... Thelohania sp., probably T. cladocera in Daphnia pulex, seasonal pattern of occurrence, frequency of parasitism, effect on host growth, impact on host population growth ...
DOI:
10.1007/BF00008769

32. Phytoplankton as a factor in the decline of the submersed macrophyte Myriophyllum spicatum L. in Lake Wingra, Wisconsin, U.S.A

Author:
Christian Jones, R.; Walti, K.; Adams, M.S.
Source:
Hydrobiologia 1983 v.107 no.3 pp. 213-219
ISSN:
0018-8158
Subject:
ponds; lakes; Wisconsin
DOI:
10.1007/BF00036690

33. Reproductive activity of Mixodiaptomus laciniatus (Copepoda, Calanoida) in a high mountain lake (La Caldera, Granada, Spain)

Author:
Cruz-Pizarro, L.
Source:
Hydrobiologia 1983 v.107 no.2 pp. 97-105
ISSN:
0018-8158
Subject:
ponds; lakes; highlands; mountains; Spain
DOI:
10.1007/BF00017425

34. Seasonal changes in nutrients and dissolved oxygen in the Gulf of Nicoya, a tropical estuary on the Pacific coast of Central America

Author:
Epifanio, C.E.; Maurer, D.; Dittel, A.I.
Source:
Hydrobiologia 1983 v.101 no.3 pp. 231-238
ISSN:
0018-8158
Subject:
estuaries; Central America
DOI:
10.1007/BF00009879

35. Selenium as a growth factor for plankton algae in laboratory experiments and in some Swedish lakes

Author:
Lindstrom, K.
Source:
Hydrobiologia 1983 v.101 no.1/2 pp. 35-48
ISSN:
0018-8158
Subject:
ponds; lakes; Sweden
DOI:
10.1007/BF00008655

36. The aquatic drift patterns of black flies (Diptera, Simuliidae)

Author:
Adler, P.H.; Light, R.W.; Kim, K.C.
Source:
Hydrobiologia 1983 v.107 no.2 pp. 183-191
ISSN:
0018-8158
Subject:
animal ecology; aquatic organisms; arthropods; aquatic habitat; entomology
DOI:
10.1007/BF00017433

37. A method for the laboratory culture of the planktonic rotifer Keratella cochlearis (Gosse)

Author:
Vancil, J.E.
Source:
Hydrobiologia 1983 v.107 no.1 pp. 47-50
ISSN:
0018-8158
Subject:
animals; aquatic organisms; aquaculture
DOI:
10.1007/BF00126702

38. Benthic invertebrate recolonization of small-scale disturbances in thelittoral zone of a subtropical Florida lake

Author:
Cowell, B.C.
Source:
Hydrobiologia 1984 v.109 no.3 pp. 193-205
ISSN:
0018-8158
Subject:
ponds; lakes; Florida
DOI:
10.1007/BF00007735

39. Comments on a study of the thermal behaviour of the American eel (Anguilla rostrata) and some statistical suggestions for the temperature preference studies

Author:
Karlsson, L.; Ekbohm, G.; Steinholtz, G.
Source:
Hydrobiologia 1984 v.109 no.1 pp. 75-78
ISSN:
0018-8158
Subject:
animals; aquatic organisms; aquatic habitat; animal ecology
DOI:
10.1007/BF00006299

40. Contribution a l'etude d'une couche a hydrogene sulfure en lac meromictique (Lac Pavin, France)

Author:
Restituito, F.
Source:
Hydrobiologia 1984 v.109 no.3 pp. 235-241
ISSN:
0018-8158
Subject:
ponds; lakes; France
DOI:
10.1007/BF00007741

41. Diatom flora of a kettle-hole bog in relation to hydrarch succession zones

Author:
Cochran-Stafira, D.L.; Andersen, R.A.
Source:
Hydrobiologia 1984 v.109 no.3 pp. 265-273
ISSN:
0018-8158
Subject:
bogs; Illinois
DOI:
10.1007/BF00007744

42. Effects of a massive swarm of ants on ammonium concentrations in a subalpine lake

Author:
Carlton, R.G.; Goldman, C.R.
Source:
Hydrobiologia 1984 v.111 no.2 pp. 113-117
ISSN:
0018-8158
Subject:
ponds; lakes; California
DOI:
10.1007/BF00008623

43. Effects of increased salinity on the diatom assemblage in Florida Lake, Michigan

Author:
Tuchman, M.L.; Stoermer, E.F.; Carney, H.J.
Source:
Hydrobiologia 1984 v.109 no.2 pp. 179-188
ISSN:
0018-8158
Subject:
ponds; lakes; Michigan
DOI:
10.1007/BF00011577

44. Effects of particle concentration and season on the filtration rates of the freshwater clam, Sphaerium striatinum Lamarck (Bivalvia : Pisidiidae)

Author:
Hornbach, D.J.; Way, C.M.; Wissing, T.E.; Burky, A.J.
Source:
Hydrobiologia 1984 v.108 no.1 pp. 83-96
ISSN:
0018-8158
Subject:
animals; aquatic organisms; aquatic habitat; animal ecology
DOI:
10.1007/BF02391636

45. Estimation des parametres de croissance (equation de von bertalanffy): application aux poissons tropicaux

Author:
Moreau, J.; Reyes, P.
Source:
Hydrobiologia 1984 v.114 no.1 pp. 13-15
ISSN:
0018-8158
Subject:
ponds; lakes
DOI:
10.1007/BF00016597

46. Interactions between pelagic metazoan and protozoan zooplankton, an experimental study

Author:
Stenson, J.A.E.
Source:
Hydrobiologia 1984 v.111 no.2 pp. 107-112
ISSN:
0018-8158
Subject:
animals; aquatic organisms; aquatic habitat; animal ecology
DOI:
10.1007/BF00008622

47. Life-history strategies and production of Tinodes waeneri (L.) (Trichoptera) in Lake Esrom, Denmark

Author:
Dall, P.C.; Heegaard, H.; Fullerton, A.F.
Source:
Hydrobiologia 1984 v.112 no.2 pp. 93-104
ISSN:
0018-8158
Subject:
ponds; lakes; Denmark
DOI:
10.1007/BF00006912

48. Phosphate uptake by blue green algae in vitro and in a lake during an algal bloom: useful application of a fore-flow relationship

Author:
Falkner, G.; Strasser, P.; Graffius, D.
Source:
Hydrobiologia 1984 v.108 no.3 pp. 265-271
ISSN:
0018-8158
Subject:
ponds; lakes
DOI:
10.1007/BF00006335

49. Potential fishery of Nile perch Lates niloticus Linne (Pisces:Centropomidae) in Nyanza Gulf of Lake Victoria, East Africa

Author:
Okemwa, E.N.
Source:
Hydrobiologia 1984 v.108 no.2 pp. 121-126
ISSN:
0018-8158
Subject:
ponds; lakes; Eastern Africa
DOI:
10.1007/BF00014871

50. Quantitative importance of ciliates in the planktonic biomass of lake ecosystems

Author:
Gates, M.A.
Source:
Hydrobiologia 1984 v.108 no.3 pp. 233-238
ISSN:
0018-8158
Subject:
ponds; lakes
DOI:
10.1007/BF00006331

51. Thermal alteration of streams draining clearcut watersheds: quantification and biological implications

Author:
Lynch, J.A.; Rishel, G.B.; Corbett, E.S.
Source:
Hydrobiologia 1984 v.111 no.3 pp. 161-169
ISSN:
0018-8158
Subject:
forests; Pennsylvania
DOI:
10.1007/BF00007195

52. Vertical distribution of organic constituents in an Antarctic lake: Lake Vanda

Author:
Matsumoto, G.; Torii, T.; Hanya, T.
Source:
Hydrobiologia 1984 v.111 no.2 pp. 119-126
ISSN:
0018-8158
Subject:
ponds; lakes; Antarctica
DOI:
10.1007/BF00008624

53. The influence of mineral salts on fecundity of the water flea (Daphnia magna) and the implications on toxicity testing of industrial wastewater

Author:
LeBlanc, G.A.; Surprenant, D.C.
Source:
Hydrobiologia 1984 v.108 no.1 pp. 25-31
ISSN:
0018-8158
Subject:
animal ecology; aquatic organisms; animals; pollution; aquatic habitat; waste management
DOI:
10.1007/BF02391629

54. Acoustic tracking of the dispersal of organic matter by scavenging fishes in the deep-sea

Author:
M. A. Collins; I. G. Priede; S. Addison; A. Smith; P. M. Bagley
Source:
Hydrobiologia 1998 v.371-372 no.0 pp. 181-186
ISSN:
0018-8158
Subject:
Coryphaenoides; acoustics; benthic organisms; mackerel; marine fish; nylon; organic carbon
Abstract:
... Movements of the scavenging deep-sea fish Coryphaenoides (Nematonurus) armatus were tracked at depths of 2500–4800 m on the Porcupine Abyssal Plain and Porcupine Seabight in the NE Atlantic using the Aberdeen University Deep Ocean Submersible (AUDOS). The AUDOS was deployed with mackerel bait and three coded acoustic transponders (CATs) covered in mackerel flesh and each enclosed in a nylon bag. T ...
DOI:
10.1023/A:1017083107914

55. Applications and performance of Radio-Acoustic Positioning and Telemetry (RAPT) systems

Author:
R. K. O'Dor; Y. Andrade; D. M. Webber; W. H. H. Sauer; M. J. Roberts; M. J. Smale; F. M. Voegeli
Source:
Hydrobiologia 1998 v.371-372 no.0 pp. 1-8
ISSN:
0018-8158
Subject:
acoustics; aircraft; cell respiration; computer software; electric power; freshwater; heart rate; human resources; radio; salinity; seawater; telemetry; temperature
Abstract:
... RAPT was developed to use systems of semi-autonomous buoys with hydrophones and radio transmitters to continuously monitor the positions and performance of multiple objects, animals and/or people tagged with miniature acoustic transmitters under water. Buoys communicate signal arrival times to shore, ship or aircraft based computers which triangulate positions in three dimensions and decode teleme ...
DOI:
10.1023/A:1017006701496

56. Basic movement pattern and chemo-oriented search towards baited pots in edible crab (Cancer pagurus L.)

Author:
Katrine Skajaa; Anders Fernö; Svein Løkkeborg; Eli K. Haugland
Source:
Hydrobiologia 1998 v.371-372 no.0 pp. 143-153
ISSN:
0018-8158
Subject:
Cancer pagurus; computer software; crabs; females; nocturnal activity; probability; ultrasonics
Abstract:
... The basic (natural) movement pattern and gear-induced behaviour of female edible crab Cancer pagurus L. were studied by means of a stationary positioning system. Nine crabs were tagged with ultrasonic transmitters and their positions were monitored approximately every third minute for 9–24 days. Because the crabs sometimes hid, the signals were often received improperly, resulting in inaccurate po ...
DOI:
10.1023/A:1017047806464

57. Change in vertical distribution of sea bass (Dicentrarchus labrax L.) during a hypoxic episode

Author:
Henrik Schurmann; Guy Claireaux; Hervé Chartois
Source:
Hydrobiologia 1998 v.371-372 no.0 pp. 207-213
ISSN:
0018-8158
Subject:
Dicentrarchus labrax; acoustics; circadian rhythm; oxygen; spatial distribution; telemetry
Abstract:
... The vertical distribution of free-swimming sea bass (Dicentrarchus labrax L.) was investigated in a 26 m³ indoor tank by means of acoustic telemetry. During the experiment the bottom of the tank was made progressively hypoxic.In normoxic conditions, sea bass displayed a clear diurnal rhythm during which they occupied the surface at night and swam deeper in the water column during the day. When a v ...
DOI:
10.1023/A:1017030228754

58. Development of miniature pingers for tracking Atlantic salmon smolts at sea

Author:
F. A. Voegeli; G. L. Lacroix; J. M. Anderson
Source:
Hydrobiologia 1998 v.371-372 no.0 pp. 35-46
ISSN:
0018-8158
Subject:
Salmo salar; automation; detection limit; freshwater; hatcheries; juveniles; mortality; salmon; signal strength; smolts
Abstract:
... Miniature pingers and automated receivers were developed and tested over three years to track Atlantic salmon smolts of different size and origin as they migrated from fresh water and at sea. Pingers (8 mm diameter × 38 mm) with delayed activation were first tested and surgically implanted in large hatchery-reared smolts (31 cm). After improvements, these pingers were implanted in smaller hatchery ...
DOI:
10.1023/A:1017014903313

59. Effects of thermal environment on Electromyographical signals obtained from Atlantic salmon (Salmo salar L.) during forced swimming

Author:
T. A. Beddow; R. S. McKinley
Source:
Hydrobiologia 1998 v.371-372 no.0 pp. 225-232
ISSN:
0018-8158
Subject:
Salmo salar; acclimation; air; body length; gold; mortality; muscle contraction; muscles; polytetrafluoroethylene; salmon; stainless steel; telemetry; temperature
Abstract:
... Hatchery-reared Atlantic salmon (Salmo salar) were acclimated to 8 °C and 18 °C for 1 month prior to surgical implantation of telemetry devices that measured electromyographical (EMG) impulses. Transmitters were 5 cm long, 1.6 cm diameter and weighed 18 g in air. The teflon coated, stainless steel bipolar electrodes were secured in place using gold tips (9 carat, 5 × 1 mm), that acted as anchors i ...
DOI:
10.1023/A:1017059913366

60. Electromagnetic telemetry of lobster (Homarus gammarus (L.)) movements and activity: preliminary results

Author:
I. P. Smith; K. J. Collins; A. C. Jensen
Source:
Hydrobiologia 1998 v.371-372 no.0 pp. 133-141
ISSN:
0018-8158
Subject:
Homarus gammarus; artificial reefs; females; lobsters; males; summer; telemetry; turbidity; water temperature; winter
Abstract:
... Individual European lobsters were tracked on an artificial reef using an electromagnetic telemetry system, which detected movements between reef units and also recorded body movements (pitching and rolling) indicated by a tilt switch incorporated into the transmitting tag. Several environmental variables were recorded simultaneously by the telemetry system, which was self-contained on the seabed. ...
DOI:
10.1023/A:1017003711548

61. Environmental unpredictability rules the autumn migration of brown trout (Salmo trutta L.) in the Belgian Ardennes

Author:
M. Ovidio; E. Baras; D. Goffaux; C. Birtles; J. C. Philippart
Source:
Hydrobiologia 1998 v.371-372 no.0 pp. 263-274
ISSN:
0018-8158
Subject:
Salmo trutta; autumn; home range; life history; radio; radio frequency identification; rivers; streams; summer; telemetry; trout; water temperature
Abstract:
... This telemetry study aimed to document the mobility of Salmo trutta in the River Ourthe sub-basin (tributary of the River Meuse) during summer and autumn, and to analyse the environmental factors which trigger spawning migration or limit their extension. Nine trout (233–2217 g and 26.6–55.2 cm FL) were radio-tagged with intraperitoneal radio transmitters and positioned daily, from 14 August 1996 t ...
DOI:
10.1023/A:1017068115183

62. Evaluation of surgery procedures for tagging eel Anguilla anguilla with biotelemetry transmitters

Author:
E. Baras; D. Jeandrain
Source:
Hydrobiologia 1998 v.371-372 no.0 pp. 107-111
ISSN:
0018-8158
Subject:
Anguilla anguilla; bandages; biotelemetry; eel; epoxides; fins; inflammation; muscles; necrosis; radio; survival rate
Abstract:
... Externally attached telemetry transmitters are unsuitable to tag yellow eels Anguilla anguilla (L.), in streams where they exhibit cryptic life habits and hide in narrow cavities between rocks. We evaluated the adequacy of surgical implantation and closing procedures for tagging eels with biotelemetry transmitters. Epoxy dummy transmitters (18 × 8 mm, 1.6–1.7 g) were implanted in eels anaesthetise ...
DOI:
10.1023/A:1017090117425

63. Frequency choice for radio telemetry: the HF vs. VHF conundrum

Author:
Mitchell M. Sisak; James S. Lotimer
Source:
Hydrobiologia 1998 v.371-372 no.0 pp. 53-59
ISSN:
0018-8158
Subject:
equipment; radio telemetry; radio waves; system optimization
Abstract:
... The choice of operating frequency has always been the subject of considerable controversy amongst researchers. Many select the radio frequency at which they conduct their studies based solely upon the availability of equipment at hand or simply on tradition. Researchers are often not fully aware of the proximal impact of frequency choice on overall system performance and its ultimate impact upon t ...
DOI:
10.1023/A:1017062819243

64. Growth and physiological responses to surgical and gastric radio transmitter implantation techniques in subyearling chinook salmon (Oncorhynchus tshawytscha)

Author:
T. L. Martinelli; H. C. Hansel; R. S. Shively
Source:
Hydrobiologia 1998 v.371-372 no.0 pp. 79-87
ISSN:
0018-8158
Subject:
Oncorhynchus tshawytscha; air; blood proteins; body weight; fish; hematocrit; juveniles; migratory behavior; necropsy; physiological response; radio transmitters; spring; yearlings; Columbia River
Abstract:
... We examined the effects of surgical and gastric transmitter implantation techniques on the growth, general physiology and behavior of 230 subyearling chinook salmon (Oncorhynchus tshawytscha, Walbaum) (100 mm–154 mm fork length). The transmitter weighed 1.3 g in air (0.9 g in water) and comprised, on average, 6% of the body weight of the fish (in air). Individuals were randomly assigned to an expe ...
DOI:
10.1023/A:1017019006039

65. Heart rate telemetry to study environmental influences on fish metabolic expenditure

Author:
Christel Lefrançois; Guy Claireaux; Jean-Paul Lagardère
Source:
Hydrobiologia 1998 v.371-372 no.0 pp. 215-224
ISSN:
0018-8158
Subject:
Dicentrarchus labrax; fish; heart; heart rate; mathematical models; metabolism; oxygen; oxygen consumption; telemetry
Abstract:
... Routine metabolic rate (RMR) and heart rate (HR) were measured simultaneously in 15 °C-acclimated and free swimming European sea bass (Dicentrarchus labrax L.) in normoxic and hypoxic conditions. The RMR fell within the boundaries previously reported for that species, i.e. the standard metabolic rate and the [Formula: see text]-curve which describes the relationship between maximum sustainable oxy ...
DOI:
10.1023/A:1017078111916

66. Inland migration study of sea trout (Salmo trutta) into the rivers Rhine and Meuse (The Netherlands), based on inductive coupling radio telemetry

Author:
André W. Breukelaar; Abraham bij de Vaate; Koos T. W. Fockens
Source:
Hydrobiologia 1998 v.371-372 no.0 pp. 29-33
ISSN:
0018-8158
Subject:
Salmo trutta; ferrimagnetic materials; radio telemetry; rivers; Netherlands
Abstract:
... A new telemetric method, the NEDAP TRAIL System®, has been developed to study sea trout migration in the delta area of the rivers Rhine and Meuse. This method is based on inductive coupling between an antenna loop on the bottom of a river or canal and ferrite rod antenna incorporated in a tag of the transponder type. Field tests showed that the detection system functions well with a maximum antenn ...
DOI:
10.1023/A:1017058718334

67. Migration of adult Atlantic salmon (Salmo salar); the effects of artificial freshets

Author:
Eva B. Thorstad; Tor G. Heggberget
Source:
Hydrobiologia 1998 v.371-372 no.0 pp. 339-346
ISSN:
0018-8158
Subject:
Salmo salar; adults; radio; rivers; salmon; water flow; Norway
Abstract:
... The upstream migration of Atlantic salmon tagged with radio transmitters was analysed on a 6 km long stretch of the River Mandalselva (southern Norway), where the residual flow was 3 m³ s⁻¹. Over a period of 40 days six artificial freshets were released. Two of the freshets lasted continuously for 48 hours and four of the freshets consisted of successive pulses of increased water discharge. There ...
DOI:
10.1023/A:1017035507856

68. Migratory and reproductive activity of radio-tagged Arctic char (Salvelinus alpinus L.) in northern Labrador

Author:
Toni A. Beddow; Caroline Deary; R. Scott McKinley
Source:
Hydrobiologia 1998 v.371-372 no.0 pp. 249-262
ISSN:
0018-8158
Subject:
Salvelinus alpinus; fish; ice; migratory behavior; radio; radio frequency identification; radio telemetry; rivers
Abstract:
... Migratory and reproductive activities of Arctic Char (Salvelinus alpinus L.) were studied using radio-telemetry in two adjacent river systems in northern Labrador, Canada. A total of 154 Arctic char were radio-tagged. Coded radio tags were surgically implanted into the body cavity of char, in the Summer and Fall of 1996. Individuals movements were monitored using 3 solar powered, fixed data loggin ...
DOI:
10.1023/A:1017055812457

69. Movements of a bream (Abramis brama (L.)), rudd × bream hybrid, tench (Tinca tinca (L.)) and pike (Esox lucius (L.)) in an Irish canal habitat

Author:
R. E. Donnelly; J. M. Caffrey; D. M. Tierney
Source:
Hydrobiologia 1998 v.371-372 no.0 pp. 305-308
ISSN:
0018-8158
Subject:
Abramis brama; Esox lucius; Scardinius; Tinca tinca; bream; habitats; home range; pike; radio; radio telemetry
Abstract:
... Radio telemetry was used to monitor the movement of four species of coarse fish in a 11.2 km long section of canal from January to June 1996. One specimen of bream, rudd × bream hybrid, tench and pike were captured using electrofishing apparatus and Lotek CFRT-3EMXT pulse coded aquatic transmitter tags, operating at 173.3 Mhz (with individual ID codes), were sutured externally. The movements of th ...
DOI:
10.1023/A:1017083423786

70. Movements of adult sea trout Salmo trutta L. in the tailrace of a low-head dam at Wloclawec hydroelectric station on the Vistula River, Poland

Author:
V. D. Linnik; L. K. Malinin; M. Wozniewski; R. Sych; P. Dembowski
Source:
Hydrobiologia 1998 v.371-372 no.0 pp. 335-337
ISSN:
0018-8158
Subject:
Salmo trutta; adults; dams (hydrology); fish; migratory behavior; rivers; telemetry; ultrasonics; water currents; water flow; Poland
Abstract:
... Ultrasonic telemetry was used to study the movements and behaviour of 27 adult migratory sea trout, 60–90 cm in fork length. Fish were caught near the tailrace of a hydroelectric dam, tagged externally and released in October 1993, 1994 and 1996. Distribution of tagged sea trout depended on flow patterns in the tailrace. At high water discharge (maximum water current greater than 1 m s⁻¹) during t ...
DOI:
10.1023/A:1017013725120

71. New approaches to the behavioural ecology of decapod crustaceans using telemetry and electronic tags

Author:
Juan Freire; Eduardo González-Gurriarán
Source:
Hydrobiologia 1998 v.371-372 no.0 pp. 123-132
ISSN:
0018-8158
Subject:
case studies; fisheries; habitat preferences; habitats; hydrology; information storage; life history; migratory behavior; ontogeny; predation; reproduction; risk; spiders; telemetry; temperature; topography
Abstract:
... Decapod crustaceans have complex life histories and behaviour in aspects such as foraging, mating and reproduction, moulting and growth, habitat selection and migration. New technologies have enabled us to use an individual, field-based approach to analyze these problems, although they have been less developed in decapods than in marine vertebrates. These new possibilities are discussed here mainl ...
DOI:
10.1023/A:1017066920151

72. Radio telemetry as a tool to study habitat use of nase (Chondrostoma nasus L.) in medium-sized rivers

Author:
Martin Huber; Arthur Kirchhofer
Source:
Hydrobiologia 1998 v.371-372 no.0 pp. 309-319
ISSN:
0018-8158
Subject:
Chondrostoma nasus; adults; endangered species; fish; habitats; home range; population dynamics; radio telemetry; rivers; temperature; Switzerland
Abstract:
... Due to a massive population decline of nase (Chondrostoma nasus L.) in the river Aare (Switzerland), a radiotelemetry study was designed to detect the habitat use of this endangered species. Although big individual differences in behaviour occurred for adult nase, habitat preferences for runs with currents between 0.5 and 1 m s⁻¹, coarse sediments and depths between 1 and 2 m could be shown. The f ...
DOI:
10.1023/A:1017005523302

73. Reactions of cod (Gadus morhua L.) in the pre-vessel zone to an approaching trawler under different light conditions

Author:
Arill Engås; Eli Kyrkjebø Haugland; Jan Tore Øvredal
Source:
Hydrobiologia 1998 v.371-372 no.0 pp. 199-206
ISSN:
0018-8158
Subject:
Gadus morhua; deglutition; fishing boats; solar radiation; swimming; trawl nets
Abstract:
... The behaviour of cod (Gadus morhua L.) towards an approaching vessel during trawling was studied by means of a stationary positioning system. Three cod were tagged by allowing them to voluntarily swallow transmitters wrapped in bait. The behaviour was recorded before, during and after trawling, which was carried out during high and low light level.Nine hauls were carried out, but only six hauls ar ...
DOI:
10.1023/A:1017057507373

74. Regurgitation rates of intragastric transmitters by adult Atlantic salmon (Salmo salar L.) during riverine migration.

Author:
G. W. Smith; R. N. B. Campbell; J. S. MacLaine
Source:
Hydrobiologia 1998 v.371-372 no.0 pp. 117-121
ISSN:
0018-8158
Subject:
Salmo salar; adults; radio; radio frequency identification; riparian areas; rivers; salmon; stomach
Abstract:
... Regurgitation rates of tagged salmon in the wild are difficult to estimate as few fish are recovered and thus the fate of the majority of tags is difficult to assess unambiguously. During a study on the River Tweed between 1994 and 1996, 281 returning adult salmon were caught by net and coble, and radio tagged. Salmon recaptured by rod and line were used as a sample of the radio-tagged population ...
DOI:
10.1023/A:1017095409731

75. Rehabilitation of aquatic habitats in warmwater streams damaged by channel incision in Mississippi

Author:
Shields, F.D. Jr.; Knight, S.S.; Cooper, C.M.
Source:
Hydrobiologia 1998 v.382 no.1-3 pp. 63-86
ISSN:
1573-5117
Subject:
community structure; stream channels; channelization; watersheds; freshwater fish; species diversity; population density; wildlife habitats; ecological restoration; water erosion; Mississippi
Abstract:
... Channel incision has major impacts on stream corridor ecosystems, leading to reduced spatial habitat heterogeneity, greater temporal instability, less stream-floodplain interaction, and shifts in fish community structure. Most literature dealing with channel incision examines physical processes and erosion control. A study of incised warmwater stream rehabilitation was conducted to develop and dem ...
Handle:
10113/7818
DOI:
10.1023/A:1003485021076

76. Remote monitoring of heart rate as a measure of recovery in angled Atlantic salmon, Salmo salar (L.)

Author:
W. G. Anderson; R. Booth; T. A. Beddow; R. S. McKinley; B. Finstad; F. Økland; D. Scruton
Source:
Hydrobiologia 1998 v.371-372 no.0 pp. 233-240
ISSN:
0018-8158
Subject:
Salmo salar; coasts; exercise; fisheries; hatcheries; heart rate; metabolism; salmon; survival rate; telemetry; temperature; wild fish; Ontario
Abstract:
... The introduction of ‘Catch and Release’ fishery programs are now widely employed by fisheries managers in most Atlantic Provinces, primarily due to the recent decline of Atlantic salmon stocks on the east coast of Canada. However, there is still considerable debate among special interest groups and regulators as to the effectiveness of the technique. Heart rate telemetry has been utilized as a too ...
DOI:
10.1023/A:1017064014274

77. Seasonal variations in time and space utilization by radio-tagged yellow eels Anguilla anguilla (L.) in a small stream

Author:
E. Baras; D. Jeandrain; B. Serouge; J. C. Philippart
Source:
Hydrobiologia 1998 v.371-372 no.0 pp. 187-198
ISSN:
0018-8158
Subject:
Anguilla anguilla; agitation; diel activity; eel; immigration; nocturnal activity; radio; radio frequency identification; rivers; sedentary lifestyle; streams; water temperature; weather
Abstract:
... Seven yellow eels (572–643 mm, 318–592 g) Anguilla anguilla (L.) were tagged with surgically implanted radio transmitters (activity circuit, 1.6–1.7 g) and tracked in the Awirs stream, a small (width < 5 m, depth from 0.1 to 1.2 m), densely populated (ca. 250 kg of eel ha⁻¹) tributary of the Belgian River Meuse. The eels were positioned daily from late April to mid-August, and their diel activity ...
DOI:
10.1023/A:1017072213791

78. Selection of optimal positioning intervals in fish tracking: an experimental study on Barbus barbus

Author:
E. Baras
Source:
Hydrobiologia 1998 v.371-372 no.0 pp. 19-28
ISSN:
0018-8158
Subject:
Barbus barbus; cost effectiveness; data collection; fish; home range; models; regression analysis; rivers; telemetry
Abstract:
... Selecting an optimum sampling frequency is a key problem in fish telemetry studies. High frequency positioning gives an accurate idea of the actual mobility pattern of the animal but may be impossible due to environmental constraints, prohibitive cost or when using long life transmitters operating on duty cycles. Low frequency positioning may prove effective, but only for a minimum loss of accurac ...
DOI:
10.1023/A:1017026127846

79. Simultaneous observations of tuna movements and their prey by sonic tracking and acoustic surveys

Author:
Erwan Josse; Pascal Bach; Laurent Dagorn
Source:
Hydrobiologia 1998 v.371-372 no.0 pp. 61-69
ISSN:
0018-8158
Subject:
Thunnus albacares; Thunnus obesus; acoustics; tuna; French Polynesia
Abstract:
... This paper reviews results of some experiments conducted in French Polynesia on tuna behaviour. A method based on the simultaneous use of two techniques, acoustic tracking and acoustic surveys, was used. Experiments were conducted within the framework of the ECOTAP program, a joint program between two national research institutes (IFREMER and ORSTOM), and a territorial institute (EVAAM).Acoustic t ...
DOI:
10.1023/A:1017065709190

80. Spawning migration of radio tagged landlocked Arctic Charr, Salvelinus alpinus L. in Ennerdale Lake, the English Lake District

Author:
D. J. F. McCubbing; B. D. Bayliss; V. M. Locke
Source:
Hydrobiologia 1998 v.371-372 no.0 pp. 173-180
ISSN:
0018-8158
Subject:
Liza; Salvelinus alpinus; females; fish; lakes; males; migratory behavior; radio; radio transmitters; rivers; solar radiation; streams
Abstract:
... A sample of twenty Arctic charr, Salvelinus alpinus L. from Ennerdale lake were externally tagged, using a small radio transmitter, during their annual spawning migration. Ten fish (5 male, 5 female) were captured from each of the two spawning tributaries using electrofishing techniques. Following release, migration behaviour was observed remotely through a network of automatic radio listening sta ...
DOI:
10.1023/A:1017079322877

81. Spawning migration of sea trout (Salmo trutta (L)) in a Danish river

Author:
Kim Aarestrup; Niels Jepsen
Source:
Hydrobiologia 1998 v.371-372 no.0 pp. 275
ISSN:
0018-8158
Subject:
Salmo trutta; body length; death; estuaries; fish ladders; freshwater; radio; rivers; trout; Denmark
Abstract:
... From September to November in 1995 a total of 49 mature sea trout were caught and radio tagged in the estuary (Randers fjord) or at the river mouth of the River Gudenå in Eastern Jutland. The tagged trout were between 2 and 6 yr old with total body length of 56–85 cm. Twenty-five of the tagged trout ascended the river. They were tracked every third day, for up to six months, until death or descent ...
DOI:
10.1023/A:1017074011007

82. Survival of radiotagged Atlantic salmon (Salmo salar L.) – and trout (Salmo trutta L.) smolts passing a reservoir during seaward migration

Author:
Niels Jepsen; Kim Aarestrup; Finn Økland; Gorm Rasmussen
Source:
Hydrobiologia 1998 v.371-372 no.0 pp. 347
ISSN:
0018-8158
Subject:
Esox lucius; Salmo salar; Salmo trutta; birds; death; lakes; mortality; pike; predation; radio transmitters; rivers; salmon; smolts; trout; watersheds; wild fish
Abstract:
... High mortality-rates of seaward migrating salmonid smolts when passing reservoirs and lakes have earlier been found in the Danish River Gudenå watershed. To reveal the causes of mortality of migrating smolts in Lake Tange, a 12 km long, shallow reservoir, 50 salmon smolts and 24 trout smolts were tagged with internal miniature radio-transmitters, and released in the river just upstream the reservo ...
DOI:
10.1023/A:1017047527478

83. Telemetry applied to behaviour analysis of yellowfin tuna (Thunnus albacares, Bonnaterre, 1788) movements in a network of fish aggregating devices

Author:
Francis Marsac; Patrice Cayré
Source:
Hydrobiologia 1998 v.371-372 no.0 pp. 155-171
ISSN:
0018-8158
Subject:
Thunnus albacares; acoustics; telemetry; Indian Ocean; Reunion
Abstract:
... This paper analyses acoustic tagging of 8 yellowfin tunas (Thunnus albacares, Bonnaterre, 1788) undertaken around Fish Aggregating Devices (FADs) in La Reunion island (Indian Ocean). Emphasis is laid on the horizontal movements and thus complete previous studies on vertical movements around the same FADs. The first result of the present study deals with the relative dwelling time of yellowfin over ...
DOI:
10.1023/A:1017009624211

84. Use of miniature radio-transmitters to track the movements of dace, Leuciscus leuciscus (L.) in the River Frome, Dorset

Author:
Stuart Clough; William R. C. Beaumont
Source:
Hydrobiologia 1998 v.371-372 no.0 pp. 89-97
ISSN:
0018-8158
Subject:
Leuciscus leuciscus; fish; radio frequency identification; radio transmitters; rivers
Abstract:
... Advances in radio-tag design have resulted in the production of tags suitable for use with relatively small fish. A method of release intended to minimise stress and increase validity of early tracks was designed. A technique of accurately locating radio-tags was developed and tested. Preliminary tracking results show that dace are highly mobile, and are capable of extensive, and often rapid migra ...
DOI:
10.1023/A:1017087222935

85. Using speed-sensing transmitters to construct a bioenergetics model for subadult lemon sharks, Negaprion brevirostris (Poey), in the field

Author:
L. Fredrik Sundström; Samuel H. Gruber
Source:
Hydrobiologia 1998 v.371-372 no.0 pp. 241-247
ISSN:
0018-8158
Subject:
Negaprion brevirostris; acoustics; electromyography; energy; energy metabolism; equations; excretion; heart rate; juveniles; lemons; models; ontogeny; Bahamas
Abstract:
... Several methods to indirectly estimate metabolism of aquatic animals have been reported, including heart rate, electromyograms, video recording, and averaging velocity of an animal moving between two or more points. The present study carried out in the lagoon at Bimini Islands, Bahamas, used acoustic, speed-sensing transmitters to indirectly estimate energy consumption of 1.5–2 m subadult lemon sh ...
DOI:
10.1023/A:1017031406947

86. A comparison of theoretical estimates of the errors associated with ultrasonic tracking using a fixed hydrophone array and field measurements

Author:
G. W. Smith; G. G. Urquhart; D. N. MacLennan; B. Sarno
Source:
Hydrobiologia 1998 v.371-372 no.0 pp. 9-17
ISSN:
0018-8158
Subject:
Laminaria; acoustics; topography; ultrasonics
Abstract:
... Consideration of position fixing errors associated with fixed array acoustic tracking techniques has generally concentrated upon the consequences of inaccuracies in the timing of the arrival of the ultrasonic pulse at each hydrophone, the overall accuracy of the system being determined by combining timing errors with information on the position of the transmitter in the array. This paper presents ...
DOI:
10.1023/A:1017039325661

87. A data logger tag for the study of slaughter procedures in aquacultured salmon

Author:
O. A. Olsen; P. O. Skjervold; S. O. Fjaera
Source:
Hydrobiologia 1998 v.371-372 no.0 pp. 71-77
ISSN:
0018-8158
Subject:
Salmo salar; adults; ambient temperature; batteries; corrosion; encapsulation; microprocessors; muscles; salmon; slaughter
Abstract:
... This paper describes a micro controller based data logger designed to be externally attached to fish, in this case adult Atlantic salmon. The logger can measure ambient temperature and the temperature difference between ambient and dorsal white muscle, the latter with high resolution and accuracy. Communication with a computer for data transfer pass over a detachable transformer coupling. This tra ...
DOI:
10.1023/A:1017039608765

88. A dynamic combined acoustic and radio transmitting tag for diadromous fish

Author:
G. H. Niezgoda; R. S. McKinley; D. White; G. Anderson; D. Cote
Source:
Hydrobiologia 1998 v.371-372 no.0 pp. 47-52
ISSN:
0018-8158
Subject:
acoustics; ambient water; diadromous fish; electrical conductivity; freshwater; migratory behavior; radio; seawater
Abstract:
... A combined acoustic and radio transmitting (CART) tag employing a dynamic conductivity switch suitable for investigating the migratory behavior of diadromous fish is described. The unique feature of the transmitter is its ability to sense the electrical conductivity of the ambient water and therefore operate in the appropriate signal mode. Under fresh water conditions the transmitter operates in r ...
DOI:
10.1023/A:1017010802404

89. The effects of Passive Integrated Transponder tags on survival and growth of juvenile brown trout (Salmo trutta L.) and their use for studying movement in a small river

Author:
Dominique Ombredane; Jean Luc Bagliniere; Frédéric Marchand
Source:
Hydrobiologia 1998 v.371-372 no.0 pp. 99-106
ISSN:
0018-8158
Subject:
Salmo trutta; juveniles; life history; population dynamics; rivers; spring; transponders; trout
Abstract:
... From 1993 to 1995, more than 2000 of 0 + brown trout (Salmo trutta L.) were captured in a small brook in October and released after clipping the left pelvic fin. More than 1700 of them were also tagged with a small Passive Integrated Transponder (PIT) tag (11 mm long) implanted in the body cavity. Tagged juveniles were recaptured in May in the brook but also one year later in the river Oir, and co ...
DOI:
10.1023/A:1017022026937

90. The efficiency of a nature-like bypass channel for pike-perch (Stizostedion lucioperca) in the Marchfeldkanalsystem

Author:
S. Schmutz; C. Giefing; C. Wiesner
Source:
Hydrobiologia 1998 v.371-372 no.0 pp. 355
ISSN:
0018-8158
Subject:
Sander lucioperca; fish; fish ladders; immigration; interdisciplinary research; radio frequency identification; radio telemetry; research programs
Abstract:
... This radio telemetry study is part of a large interdisciplinary research program on the colonisation and development of the Marchfeldkanal(MFK)-system, a man made channel. The immigration of fishes into the MFK is dependent on the effectiveness of fish bypass channels at several weirs. To investigate the efficiency of the lower most fishway we estimated the population densities along the MFK-syste ...
DOI:
10.1023/A:1017091625603

91. A method for the external attachment of acoustic tags on roundfish

Author:
Guy Claireaux; Christel Lefrançois
Source:
Hydrobiologia 1998 v.371-372 no.0 pp. 113-116
ISSN:
0018-8158
Subject:
Dicentrarchus labrax; Gadus morhua; acoustics; heart rate; oxygen consumption
Abstract:
... The present paper proposes a new method for the external attachment of an acoustic tag on roundfish. The tag is placed in anterio-ventral position and attached with two wires passed around the pelvic girdle. This tagging method was tested on Atlantic cod and European sea bass using acoustic heart rate transmitters. Preliminary results concerning metabolic demand (oxygen consumption), heart rate an ...
DOI:
10.1023/A:1017017810099

92. The migratory behaviour of juvenile and adult salmonids in relation to an estuarine barrage

Author:
I. C. Russell; A. Moore; S. Ives; L. T. Kell; M. J. Ives; R. O. Stonehewer
Source:
Hydrobiologia 1998 v.371-372 no.0 pp. 321-334
ISSN:
0018-8158
Subject:
Salmonidae; acoustics; adults; diadromous fish; estuaries; juveniles; migratory behavior; rivers; saline water; smolts; spring; tides
Abstract:
... There is wide concern regarding the effects that estuarine barrages may have on estuarine environments and the species which utilise them. Of particular concern are the possible effects on diadromous fish which move between fresh and salt water. This paper presents results from a 3 year investigation (1993–95) of the migratory behaviour of both juvenile and adult salmonids undertaken in the vicini ...
DOI:
10.1023/A:1017043726512

93. The migratory behaviour of wild Atlantic salmon (Salmo salar L.) smolts in the River Test and Southampton Water, southern England

Author:
A. Moore; S. Ives; T. A. Mead; L. Talks
Source:
Hydrobiologia 1998 v.371-372 no.0 pp. 295-304
ISSN:
0018-8158
Subject:
Salmo salar; acclimation; acoustics; diurnal variation; estuaries; freshwater; migratory behavior; rivers; saline water; smolts; tides; England
Abstract:
... Thirty wild Atlantic salmon Salmo salar (L.) smolts, tagged with miniature acoustic transmitters, were tracked in the River Test and Southampton Water, to describe the freshwater and estuarine patterns of migration. Migration in freshwater was predominantly nocturnal (mean time 23:42) and smolts tagged earlier in the study spent significantly longer in the river before migrating into the estuary t ...
DOI:
10.1023/A:1017087524694

94. A radio telemetry study of the migration of Atlantic salmon (Salmo salar L.) and sea trout (Salmo trutta trutta L.) in the upper Rhine

Author:
Matthieu Gerlier; Pascal Roche
Source:
Hydrobiologia 1998 v.371-372 no.0 pp. 283-293
ISSN:
0018-8158
Subject:
Salmo salar; Salmo trutta; autumn; basins; pollution; radio; radio telemetry; rivers; salmon; streams; summer; trout; water quality; Rhine River
Abstract:
... Atlantic salmon disappeared from the Rhine River in the mid-fifties when pollution and canalization of the main course of the river blocked access to their spawning areas. After water quality improved in the 1980's, a reintroduction program was begun in the French upper Rhine basin in 1992. To better define the difficulties encountered by the returning salmon on their way between the Iffezheim dam ...
DOI:
10.1023/A:1017061608281

95. Akinete abundance of N₂-fixing cyanobacteria in sediment of Lake Balaton (Hungary)

Author:
Attila W. Kovács; Eszter Koncz; Lajos Vörös
Source:
Hydrobiologia 2003 v.506-509 no.1-3 pp. 181-188
ISSN:
0018-8158
Subject:
Cylindrospermopsis raciborskii; biomass; eutrophication; lakes; sediments; summer; Hungary
Abstract:
... The progressive eutrophication of Lake Balaton was perceived in the early 1970s. From 1975 to 1994, the development of summer blooms of N&2inf;-fixing cyanobacteria, especially Cylindrospermopsis raciborskii, became a regular phenomenon in the western part and sometimes in the eastern part of the lake. Since 1995, the biomass of phytoplankton, particularly N&2inf;-fixing cyanobacteria, has decreas ...
DOI:
10.1023/B:HYDR.0000008614.76166.28

96. Algological and bacteriological investigations on reed periphyton in Lake Velencei, Hungary

Author:
Éva Ács; Andrea K. Borsodi; Judit Makk; Piroska Molnár; Andrea Mózes; Anna Rusznyák; Mária N. Reskóné; Keve T. Kiss
Source:
Hydrobiologia 2003 v.506-509 no.1-3 pp. 549-557
ISSN:
0018-8158
Subject:
Achnanthes; Acinetobacter; Aeromonas; Agrobacterium; Curtobacterium; Pseudomonas fluorescens group; Shewanella; bacteria; biodiversity; fermentation; lakes; molecular biology; periphyton; plant pathogens; ribosomal DNA; weeds; Hungary
Abstract:
... In the shallow Lake Velencei (surface area 24.5 km²) reed communities (Scirpo-Phragmitetum) are of great significance due to extensive metabolic activity of algal-bacterial associations developing on their submerged surfaces. Samples for algological and bacteriological studies were taken in April 2000 and July 2001 at five sites of the lake and were analysed with traditional methods as well as wit ...
DOI:
10.1023/B:HYDR.0000008591.89558.75

97. Allelopathic activity of Ceratophyllum demersum L. and Najas marina ssp. intermedia (Wolfgang) Casper

Author:
Elisabeth M. Gross; Daniela Erhard; Enikö Iványi
Source:
Hydrobiologia 2003 v.506-509 no.1-3 pp. 583-589
ISSN:
0018-8158
Subject:
Ceratophyllum demersum; Najas marina; acetone; allelochemicals; allelopathy; epiphytes; fractionation; macrophytes; methanol; nutrient uptake; phytoplankton; solid phase extraction; solvents
Abstract:
... We investigated the allelopathic activity of two submersed macrophytes with different growth forms and nutrient uptake modes, Ceratophyllum demersum and Najas marina ssp. intermedia. A bioassay-directed method development revealed optimal extraction solvents for allelochemicals from both macrophytes. For Najas, 50% methanol and for Ceratophyllum 50% acetone yielded the strongest inhibition in the ...
DOI:
10.1023/B:HYDR.0000008539.32622.91

98. Allelopathic activity of Chara aspera

Author:
Johanna Berger; Michael Schagerl
Source:
Hydrobiologia 2003 v.501 no.1-3 pp. 109-115
ISSN:
0018-8158
Subject:
Anabaena cylindrica; Chara; allelopathy; bioassays; extracts; fractionation; growth retardation; high performance liquid chromatography; hydrophilicity; methanol; shoots; strains
Abstract:
... Allelopathic activity of Chara aspera was determined in agar diffusion assays using planktonic cyanobacteria as target organisms. Growth inhibition of cyanobacterial strains was observed in bioassays inoculated with living Chara aspera shoots as well as with 60% aqueous methanol extracts of Chara aspera. For further analysis, the methanol extract was fractionated into three parts: a lipophilic met ...
DOI:
10.1023/A:1026263504260

99. Application of habitat evaluation procedure for impact assessment studies in Laguna de Bay, Philippines

Author:
Ireneo G. Bongco; Adelina C. Santos-Borja; Tjitte A. Nauta
Source:
Hydrobiologia 2003 v.506-509 no.1-3 pp. 811-817
ISSN:
0018-8158
Subject:
development projects; environmental impact; habitats; human population; lakes; pollution control; rivers; saltwater intrusion; sea level; water quality; Philippines
Abstract:
... The assessment of the Laguna de Bay's changing ecological status is imperative in order to address the growing concern of its possible impact on the suitability of the lake to the various user functions and future demands. The innovative use of a water quality evaluation method through the application of the Habitat Evaluation Procedure (HEP) can support ecological impact studies in Laguna de Bay. ...
DOI:
10.1023/B:HYDR.0000008599.71810.b8

100. Bacterial activities in shallow lakes – a comparison between extremely acidic and alkaline eutrophic hard water lakes

Author:
Brigitte Nixdorf; Jörn Jander
Source:
Hydrobiologia 2003 v.506-509 no.1-3 pp. 697-705
ISSN:
0018-8158
Subject:
bacteria; chemistry; groundwater; lakes; mining; qualitative analysis; thymidine; zooplankton; Germany
Abstract:
... Bacterial abundance and activity were investigated by DAPI-staining and ³H-thymidine incorporation method in samples from a very shallow, hypertrophic hard water lake and from acidic mining lakes in north-eastern Germany. Bacterial cell numbers in the acidic lakes were about one order of magnitude less than in the hypertrophic natural lake but are probably underestimated due to methodological prob ...
DOI:
10.1023/B:HYDR.0000008623.73250.c8