Fig. 3From: Population structure of the ribbed mussel Geukensia demissa in salt marshes in the southern Gulf of St. Lawrence, CanadaPhotograph of a quadrat on each of the three Spartina alterniflora zones; adjacent photograph indicates Geukensia demissa in each of the zones. Arrows indicate the mussel within the quadrat that is blown up in a 2, b 2 and c 2. a 1, a 2 Dead zone, b 1, b 2 intermediate zone and c 1, c 2 dense zoneBack to article page