TABLE 1.

Plant species, sampling dates, and sampling locations

Plant species	Common name	Sampling date	Latitude	Longitude	Water column salinity	Site description
Z. marina	Eelgrass	18 May 2005	37°50′37″N	75°59′15″W	13	Northeast side of Tangier Island
P. perfoliatus	Redhead grass	14 June 2005	39°01′53″N	76°31′31″W	7	North bank of Severn River
S. pectinata	Sago pond weed	27 June 2005	39°01′53″N	76°31′31″W	7	North bank of Severn River
V. americana	Wild celery	26 July 2005	39°23′20″N	76°02′27″W	1	Mouth of Sassafrass River