Comparison of visual observation and excavation to quantify density of the endangered bivalve Unio crassus in rivers of north-eastern France.

LAMAND, Florent et BEISEL, Jean-Nicolas, 2014. Comparison of visual observation and excavation to quantify density of the endangered bivalve Unio crassus in rivers of north-eastern France. Knowledge and Management of Aquatic Ecosystems [en ligne]. 2014. [Consultésans date]. Consulté de : http://connection.ebscohost.com/c/articles/95734412/comparison-visual-observation-excavation-quantify-density-endangered-bivalve-unio-crassus-rivers-north-eastern-france