Report on Harmonisation of freshwater biological methods

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density. The age structure or size structure is determined in all but three countries:Poland, Finland and UK.Table 6. Fish sampling and metrics used in different countries within the GIGs..GIG/CountrySampling method Composition metric Quantity metric Age/ size structureALPINEIT net fishing species composition YATDEPLgillnets, electrofishing,hydroacoustics (Gassner, H.and J. Wanzenböck, 1999)catch statistic of professionalfishermen and sport fishing;test-fishinginformation from anglers;historical dataLT selective fish-net, length - 5m,porosity - 14, 18, 22, 25, 36,40, 50, 60 mmEENLGBDEselectiv fish-net, 5m length,porosity - 14, 18, 22, 25, 36,40, 50, 60 mm; Lundgrenmulti-mesh nylonmonofilament gillnetsLundgren type gillnets; trawls(10x1,5 m), mesh 12 mm.hydroacoustics - survey carriedout using a portableechosounder operating at200kHz. Central arm had 10transects with a total length of1935mPoint electro fishing accordingto EN 14011,along transectlines; multimesh gillnetsaccording to Swedish standardnative speciescaught speciesBALTICoccurrence of the fishtaxa on the basis ofanglers' informationor catches; indicatortaxanumber of speciescaptured fishes aresorted by mesh sizeand species, measuredby the total length,number of speciespiscivor./planktivorandpiscivor./omnivor.ratiosCENTRALspecies listsno data available forindividual speciesYmetric tons per year Yabundance inunits/ha andbiomass in kg/haNYabundance in Yunits/ha, biomass inkg/ha, CPUEtotal biomass andspecies share oftotal biomass,CPUEfish density at -50db and fishdensity at -56 dBspecies composition relative abundanceand estimate ofbiomass, CPUEage distribution,size structureMEDITERRANEANES Trammel net, RFAI Method species determination size compositionFI prEN 14757 Water quality –sampling of fish with gillnets;Nordic gillnets in littoral,profundal and pelagic.NORDICnative species,species compositionNYCPUE, number and Yweight66
CEN/TC 230/WG 2/ TG 4 N28, 2 nd working draftNO prEN 14757 Water quality -Sampling of fish with gillnets;Nordic gillnets in littoral,profundal and pelagial,CEN/TC 230/WG 2/TG 4 N28, 2nd Working draftSENordic multiple mesh sizegillnetting. Both pelagic andbottom nets are used, seeSwedish EPA report 4921 andAppelberg, 2000species numberspecies number,diversityunit catches, Yrelative abundance,CPUE for eachspecies (mainlytrout)abundance, biomass Y67
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Institute for Environment and Susta
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CONTENTSBackground and purpose of t
Page 5 and 6:
Background and purpose of the docum
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States and candidate countries. Inf
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classification, each of these being
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BIOLOGICAL QUALITY ELEMENT: PHYTOPL
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indicators, species lists, frequenc
Page 15 and 16: 53. The identification and enumerat
Page 17 and 18: 64. In general, this technique is t
Page 19 and 20: RIVER BIOLOGICAL QUALITY ELEMENT: F
Page 21 and 22: 84. The development of specific sta
Page 23 and 24: practice guides for identification
Page 25 and 26: 100. The information received from
Page 27 and 28: Evaluation of the suitability of cu
Page 29 and 30: group should update its primary fin
Page 31 and 32: ReferencesAFNOR (Association Franç
Page 33 and 34: EN ISO 8689-2 Water quality - Biolo
Page 35 and 36: Lazaridou-Dimitriadou, M., C. Kouko
Page 37 and 38: Shannon, C.E. and W. Weaver, 1949.
Page 39: Annex I: Composition of the Geograp
Page 43 and 44: Annex III: River biological assessm
Page 45 and 46: Annex IV: Analysis of lake biologic
Page 47 and 48: Number of sampling stations10080%60
Page 49 and 50: IT 90% acetone spectrophotometricPT
Page 51 and 52: 10. The sampling depth and volume s
Page 53 and 54: PTESFIIE5667-2/98 Romanianstandardi
Page 55 and 56: Sampling stations%1008060402001 2-1
Page 57 and 58: MACROPHYTES16. The aquatic Macrophy
Page 59 and 60: Plants sampled per GIG1008060%40Eme
Page 61 and 62: NO qualitativ method species number
Page 63 and 64: indicators, species lists, frequenc
Page 65: 26. The sampling frequency is varia
Page 70 and 71: programs are based only on the diat
Page 72 and 73: 21. Some countries like France, Est
Page 74 and 75: Table 1. European methods for monit
Page 76 and 77: countries also covers Non-EU Member
Page 78 and 79: 49. The Danish Stream Fauna Index i
Page 80 and 81: Hungary58. Since 2002 a modificatio
Page 82 and 83: Acidification Index, based on the s
Page 84 and 85: Identification is predominantly to
Page 86 and 87: size of the net range between 250 t
Page 88 and 89: water bug genus (Aphelocheirus) and
Page 90 and 91: Table 5. Common abundance classific
Page 92 and 93: 108. Process Assessment focuses on
Page 94 and 95: Austria120. MuLFA: Ecological Integ
Page 96 and 97: Sweden126. Swedish fish Index: Appe
Page 98 and 99: ut comparisons have been made with
Page 100 and 101: seasons for sampling are summer and
Page 102 and 103: 102
Page 104 and 105: Consultation open to ECOSTAT &inter
Page 106 and 107: Table 1. List of European standards
Page 108 and 109: 108
Page 110 and 111: development of typologySweden Yes,
Page 112 and 113: one or other option depends on the
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Page 116 and 117:
• An integrated holistic evaluati
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• Phytoplankton: Yes; Clorophyll
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• Macroalgae: No• Benthic inver
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• Macrophytes: No• Macroalgae:
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Mission of the JRCThe mission of th
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Report on Harmonisation of freshwater biological methods

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