Extended Abstract 11th International Symposium on Ecohydraulics 2016

Functional habitat chronology analysis: integrating life stages habitat requirements and habitat connectivity for estimating river production potential (26203)

Normand E Bergeron 1 , Mathieu Roy 1 , Céline Le Pichon 2 , Carole-Anne Gillis 3 , Jean-Nicolas Bujold 4 , Marc Mingelbier 4
  1. Eau Terre et Environnement, INRS, Québec, QC, Canada
  2. Hydro-ecology, Irstea, Antony, France
  3. Restigouche River Watershed Management Council, Matapédia, Québec/New Brunswick, Canada
  4. Ministère des Forêts, de la Faune et des Parcs, Québec, QC, Canada

The functional habitat chronology approach we present is based on the idea that the value of a complementary habitat decreases to zero if it is too far to be reached by an individual or if access is precluded by an impassable obstacle. Applying this principle chronologically throughout the life history of a fish therefore only keeps a chain of successive suitable habitat patches that are connected to each other based on the mobility of the fish at the time that the movement is required. This approach is intended to provide improved estimates of production units in a river. In this presentation, the usefulness of the approach is illustrated using an example from Atlantic salmon (Salmo salar) rivers of the province of Québec (Canada).

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