Report on Harmonisation of freshwater biological methods

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Sweden126. Swedish fish Index: Appelberg et al (2000) proposed a set of metrics based onstandardised fish sampling, for assessing environmental disturbances in fishcommunities in Swedish lakes and streams. Reference values for the fish communitymetrics and scoring criteria in relation to regional and local environments wereestimated, using two comprehensive national databases comprising fish communitydata from lakes and streams. In concordance with Minns et al. (1994), the databaseswere assumed to comprise both degraded and reference habitats.English127. IBI: Rahman et al. (2002) developed an index to assess ecological integrity inlowland rivers. The same IBI is also used in other countries as Finland, Italy,Lithuania, Netherlands, Spain and Switzerland.Other Fish Methods128. Czech Republic - Fish Stock assessment CEN/TC 230/WG 2/TG 4N (2001)Water analysis – Sampling of Fish with electricity. Revision of Pr EN 14011. 25.October 2001129. Denmark - Udvidet biologisk program. Skriver, J et al (1999)130. Finland - A fish based index for classification of the ecological status of riversis under development. In fish sampling of rivers, electrofishing according to SFS –EN 14011 (Water analysis – sampling of fish with electricity is applied.131. France - Indice Poisson en Riviere (FBI). Oberdorff, T et al (1992)132. Italy – Ichthyological Index (I.I. “Indice Ittico”). Lodi, E. Badino, G. (1993)Austria133. Several fish sampling methods are currently used in Austria. The mainmethods are electric fishing (in wadable streams or rivers), electric fishing from aboat, seining, gillnetting and long-lines (in large rivers, such as The Danube). Inwadable rivers, the number of electric fishing devices and the number of anodes aredependent on river width. Autumn is the preferred sampling season in wadable rivers.96
In non-wadable or large rivers, the main sampling season is also in autumn, but alsoin the summer in the Danube.Belgium – Flanders134. The fish population surveys are standardised both for wadable and nonwadablerivers. The principal method of fish sampling is electric fishing, but othermethods such as gillnets, seine netting or fyke nets are also used in large rivers, and insome specific water systems (e.g. in Polder drainage systems).135. In wadable rivers, the number of electric fishing devices and the number ofanodes are dependent on river width, from 1 anode for river width smaller than 1.5 mto 4 anodes for rivers of 6-8 m wide. Electric fishing is performed in an upstreamdirection. At each station (sampled area = 100 m long), a maximum of 200 specimensof each species are individually weighed and measured). Captures by fyke nets, seinenetting and/or gill nets are sometimes used to complement the electric fishingcaptures, principally in standing waters (channels).Belgium – Wallonia136. Despite the absence of a regular fish-monitoring programme defined at theregional level, several institutions (Universities, public administration responsible ofnatural resource management) perform frequent fish sampling operations in Wallonia.Electric fishing is used by all institutions, with relatively similar, but not standardised,sampling procedure. In addition, fish capture data obtained with gill nets, seinenetting, fake nets or fish pass control are also compiled in the regional fish database.137. In rivers, electric fishing is performed over a distance of 150-350 m,regardless of river width, with 1-3 passages depending on sampling objectives andinstitutions. Stop nets are used as far as possible, but if the water flow is too high orthe river too wide, sampling areas are selected in such a way that natural barriers(small weirs or very shallow riffles) delimit the prospected zones. The preferredsampling seasons are summer and autumn.138. In non-wadable rivers, electric fishing and horizontal bottom gill nettechniques are combined. Electric fishing is performed from a boat, in an upstream ordownstream direction along both banks, by a staff of 4 persons including the anodeoperator. Both electric fishing and gill netting are usually performed during daylight,97
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Institute for Environment and Susta
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CONTENTSBackground and purpose of t
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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
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53. The identification and enumerat
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64. In general, this technique is t
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RIVER BIOLOGICAL QUALITY ELEMENT: F
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84. The development of specific sta
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practice guides for identification
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100. The information received from
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Evaluation of the suitability of cu
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group should update its primary fin
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ReferencesAFNOR (Association Franç
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EN ISO 8689-2 Water quality - Biolo
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Lazaridou-Dimitriadou, M., C. Kouko
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Shannon, C.E. and W. Weaver, 1949.
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Annex I: Composition of the Geograp
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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 and 66: 26. The sampling frequency is varia
Page 67: CEN/TC 230/WG 2/ TG 4 N28, 2 nd wor
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 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
Page 114 and 115: 114
Page 116 and 117: • An integrated holistic evaluati
Page 118 and 119: • Phytoplankton: Yes; Clorophyll
Page 120 and 121: • Macroalgae: No• Benthic inver
Page 122 and 123: • Macrophytes: No• Macroalgae:
Page 124: Mission of the JRCThe mission of th
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Report on Harmonisation of freshwater biological methods

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