GWMP 04 Dyke Marsh

George Washington Memorial Parkway

Site data

38.7742N 77.0510W

Hardwood flooplain forest

Corticololous lichens in plot 2004 (abundance)

Candelaria concolor (2)
Flavoparmelia caperata (3)

Parmotrema hypotropum (3)

Physcia aipolia (1)
Physcia millegrana (4)

Punctelia rudecta (4)
Pyxine caesiopruinosa (2)

Element data (mean µg/g ± SD)

2004	2009
Cd  < 0.54 Cu  12.58 ± 3.50 Cr   1.36 ± 0.15 Pb  26.52 ± 4.65 Ni   2.12 ± 0.32 Zn  58.34 ± 12.54 S  1674.2 ± 183.2 Hg  0.15 ± 0.01	Cd  < 0.50 Cu  12.71 ± 0.38 Cr   2.86 ± 0.13 Pb  20.63 ± 0.86 Ni   2.67 ± 0.15 Zn  43.24 ± 1.10 S  1790.9 ± 32.5 Hg  —