ROCR 02 Nature Center

Rock Creek Park

Site data

38.9748N 77.0432W

Oak-hickory forest

Corticololous lichens in plot 2004 (abundance)

Flavoparmelia caperata (2)

Physcia millegrana (2)

Punctelia rudecta (3)

Element data (mean µg/g ± SD)

2004	2009
Cd  < 0.54 Cu  9.30 ± 0.50 Cr   1.85 ± 0.12 Pb  25.13 ± 1.08 Ni   2.34 ± 0.38 Zn  39.29 ± 1.50 S  1319.7 ± 49.7 Hg  0.11 ± 0.01	Cd  < 0.50 Cu  12.95 ± 2.56 Cr   2.72 ± 0.16 Pb  20.02 ± 0.13 Ni   2.66 ± 0.08 Zn  46.59 ± 1.93 S  1594.1 ± 254.9 Hg  —

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