Cristin-resultat-ID: 1253274
Sist endret: 9. juli 2015, 15:31
Resultat
Vitenskapelig foredrag
2012

CORRELATION BETWEEN SHELTER ABUNDANCE AND GRAIN SIZE DISTRIBUTION FOR THE ASSESSMENT OF SEDIMENT QUALITY FOR JUVENILE ATLANTIC SALMON

Bidragsytere:
  • stefan jocham
  • Nils Ruther
  • Markus Noack og
  • Julian Friedrich Sauterleute

Presentasjon

Navn på arrangementet: 9th International Symposium on Ecohydraulics (ISE 2012)
Sted: Wien
Dato fra: 17. september 2012
Dato til: 21. september 2012

Arrangør:

Arrangørnavn: CEDREN, Sintef

Om resultatet

Vitenskapelig foredrag
Publiseringsår: 2012

Beskrivelse Beskrivelse

Tittel

CORRELATION BETWEEN SHELTER ABUNDANCE AND GRAIN SIZE DISTRIBUTION FOR THE ASSESSMENT OF SEDIMENT QUALITY FOR JUVENILE ATLANTIC SALMON

Sammendrag

It is assumed that elevated degrees of fine sediments in river beds affect negatively habitat quality for juvenile Atlantic salmon because of reduction of interstitial space. Finstad et al. [2] developed a simple method to measure interstitial space (shelter availability for salmonids) in running waters. Shelter availability is a candidate mechanism for survival of juvenile salmon due to reduction of predation risk. The goal of this study was to find a relationship between shelter abundance and the associated grain size distribution to be implemented in predictive numerical models for the assessment of the ecological status in running waters. The developed approach was conducted by gathering data in representative places both for shelter abundances and grain size distributions. The results of the study indicate that percentile values generated in grain size analysis are of varying correlation quality related to shelter abundance. Percentiles describing the fine tail of the distribution (D5 and D10) are highly correlated to shelter abundance whereas percentiles describing the middle and coarse part of the distribution (D50, D90) are poorly correlated. Also skewness and geometric mean show relatively high correlation quality. The findings are used to develop assessment and management tools for rivers affected by hydropower regulation.

Bidragsytere

stefan jocham

  • Tilknyttet:
    Forfatter
    ved Tyskland
Aktiv cristin-person

Nils Rüther

Bidragsyterens navn vises på dette resultatet som Nils Ruther
  • Tilknyttet:
    Forfatter
    ved Institutt for bygg- og miljøteknikk ved Norges teknisk-naturvitenskapelige universitet

Markus Noack

  • Tilknyttet:
    Forfatter
    ved Bundesanstalt für Geowissenschaften und Rohstoffe

Julian Sauterleute

Bidragsyterens navn vises på dette resultatet som Julian Friedrich Sauterleute
  • Tilknyttet:
    Forfatter
    ved Energisystemer ved SINTEF Energi AS
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