Résumé :
|
The assessment of resident species, conducted in the winters of 1974-1976, yielded 45 species in the James River, 39 species in the York River, 35 species in the Rappahannock River and 29 species in the Potomac River. This decline in species diversity is in direct correlation to the decline in salinity from river to river beginning with the James River and proximity to the Chesapeake Bay mouth. The Rappahannock River contained the largest population of overwintering alosine fishes although the overwintering population in its entirety was insignificant.
|