Estimation Of Juvenile Striped Bass Relative Abundance In The Virginia Portion Of Chesapeake Bay, January 2012-December 2012 : Annual Progress Report

Leonard Machut
The 2012 Striped Bass juvenile abundance index is 2.68 and is significantly lower than the historic average of 6.96. Recruitment failure, as defined by Addendum II to Amendment 6 of the FMP, occurred during 2012. All individual watershed JAI values were below their historic mean. The Rappahannock, Pamunkey and Chickahominy River JAI values were significantly lower than their respective historic averages. Although lower JAI values were reported for the James and Mattaponi rivers, annual JAI
more » ... dence intervals overlapped with historic confidence intervals suggesting juvenile abundance in these two rivers was not significantly different from the longterm average abundance. Based on our sampling of auxiliary stations juvenile Striped Bass generally did not occupy sites outside of the core nursery zone during 2012.
doi:10.21220/m2-z9sb-zj55 fatcat:bp3ddk3izbh25okw3gsrxpgqiu