Rapport til Ribe Amt - WaterFrame

Indholdsfortegnelse
0. SAMMENFATNING .................................................................................................................................................3
1. BAGGRUND OG FORMÅL.....................................................................................................................................5
2. METODE ....................................................................................................................................................................6
2.1. ELFISKEDATA..........................................................................................................................................................6
2.2. KRITERIER FOR UDVÆLGELSE AF STATIONER BEFISKET I 2003................................................................................7
2.3. BEREGNING AF SCORE I FISKEINDEKS......................................................................................................................7
2.4. VURDERING AF ØKOLOGISK KVALITET....................................................................................................................8
2.5. FISKEVANDSMÅLSÆTNINGER..................................................................................................................................9
2.6. OKKER OG FORURENINGSGRAD...............................................................................................................................9
3. FISKEFAUNAEN PÅ DE ENKELTE STATIONER ...........................................................................................11
3.1. GRINDSTED -VARDE Å..........................................................................................................................................11
3.2. ANSAGER Å...........................................................................................................................................................26
3.3. LINDING Å ............................................................................................................................................................30
3.4. HOLME Å ..............................................................................................................................................................35
3.5. ALSLEV Å .............................................................................................................................................................38
4. MÅLEPARAMETRE OG DEL-VANDSYSTEMER ...........................................................................................42
4.1. TOTAL ANTAL FISKEARTER ...................................................................................................................................43
4.2. ANTAL AF INTOLERANTE ARTER............................................................................................................................44
4.3. ANTAL AF BENTHISKE ARTER................................................................................................................................44
4.4. ANTAL AF DRIFTÆDENDE ARTER...........................................................................................................................45
4.5. ANDEL AF INDIVIDER DER ER HUNDESTEJLER........................................................................................................45
4.6. ANDEL AF INDIVIDER DER ER OMNIVORE...............................................................................................................45
4.7. ANDEL AF INDIVIDER DER ER INVERTIVORE ..........................................................................................................46
4.8. ANDEL AF INDIVIDER DER ER PISCIVORE ...............................................................................................................46
4.9. ANTAL ØRREDYNGEL PR. M VANDLØB...................................................................................................................46
4.10. ANTAL ARTER AF VANDREFISK............................................................................................................................47
4.11. ANDEL ÅRSYNGEL BLANDT ØRRED .....................................................................................................................47
4.12. ANDEL AF INDIVIDER DER ER GRUSGYDERE ........................................................................................................48
5. VALIDITET AF FISKEINDEKSET......................................................................................................................49
6. FANGSTERNES VARIATION I TID OG RUM ..................................................................................................54
7. RESSOURCEFORBRUG........................................................................................................................................58
8. FREMTIDIG FISKEMONITERING.....................................................................................................................59
8.1. FISKEINDEKSETS KVALITETSKRAV........................................................................................................................59
8.2. NY ELFISKESTANDARD..........................................................................................................................................61
BILAG 1........................................................................................................................................................................65
BILAG 2........................................................................................................................................................................66
BILAG 2 (FORTSAT)..................................................................................................................................................67
BILAG 3........................................................................................................................................................................68
BILAG 3 (FORTSAT)..................................................................................................................................................69
BILAG 4........................................................................................................................................................................70
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