Document Type



Virginia Institute of Marine Science

Publication Date



This final grant report is subdivided into two major sections. the first section describes the distribution and abundance of submerged aquatic vegetation (SAV) in the lower Bay. Baseline information for SAV was collected in 1978 and supplemented with additional information from 1979. Subsequently, in 1980 and 1981, overflights were conducted of all polyhaline and mesohaline areas mapped for SAV in 1978 and photographs were taken from which aerial coverage of the vegetation was measured. The data from 1978 through 1981 were analyzed for short term changes in SAV distribution and abundance. This information was combined with historical data from six intensive study sites to provide a detailed description of changes in distribution and abundance of SAV over the last 50 years.

Included in this section of the report are: 1) a comparison of SAV distribution and abundance for all topographic quadrangles containing SAV in 1978, 1980 and 1981; 2) a complete analysis of information from six historical sites including the most recent 1980 and 1981 data; and 3) an appendix which includes the topographic maps with SAV bed outlines for the 19x inventory. These are directly comparable to maps produced from photography taken in 1978.


Aquatic plants -- Chesapeake Bay (Md. and Va.), Aquatic plants -- Chesapeake Bay Region (Md. and Va.) -- Geographical distr


Final report ... contract no. X003246.