Indices of Abundance
Sciaenids (drums): Ictalurids: Anadromous Species:
• spot • channel catfish • striped bass
• Atlantic croaker • white catfish
• weakfish • blue catfish
• silver perch
Pleuronectiformes
Misc. Species:
Blue
Crabs:
(flounders and soles):
• summer
flounder
• American
eel
• age 0, age 1+,
• bay
anchovy
and adult females
• black seabass
The Random Stratified Index (RSI) is presented for selected species. The graphs and tables in this section show survey results for 1988-2007. For some species, indices have been calculated for multiple age/size classes.
Tables are available as links to downloadable Microsoft Excel Files.
The methods used to calculate indices of abundance from the VIMS Juvenile Fish and Blue Crab Survey data sets are constantly under review. The cut-off lengths used to separate young-of-year (YOY) from older fish, along with the geographic and temporal data limits used for each species, may change as more study is done.