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Air Quality Criteria for Lead Volume II of II - (NEPIS)(EPA) - US ...

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AX7-201<br />

Table AX7-2.5.2 (cont’d). Essential Ecological Attributes <strong>for</strong> Natural Aquatic Ecosystems Affected by <strong>Lead</strong><br />

Category Species<br />

Macroinvertebrate<br />

community<br />

Macroinvertebrate<br />

community<br />

Macroinvertebrate<br />

community<br />

Fish, crustacean and<br />

macroinvertebrate<br />

community<br />

Condition<br />

Measures<br />

Lower total<br />

abundance, decreased<br />

taxa, and EPT<br />

richness, larger<br />

percentage <strong>of</strong> tolerant<br />

species <strong>of</strong> benthic<br />

macroinvertebrates.<br />

Negatively correlated<br />

with species richness<br />

and diversity indices<br />

Reduced species<br />

abundance<br />

Correlation with<br />

changes in species<br />

abundance and<br />

distribution<br />

Chironomid community Reduced chironomid<br />

richness<br />

Macroinvertebrate<br />

community<br />

Macroinvertebrate<br />

community<br />

<strong>Lead</strong> in tissues<br />

negatively correlated<br />

with taxa richness,<br />

EPT richness,<br />

chironomid richness,<br />

and species density.<br />

<strong>Lead</strong> in tissues<br />

negatively correlated<br />

with EPT richness<br />

and abundance.<br />

Exposure<br />

Medium Location<br />

Freshwater<br />

and sediment<br />

Estuary<br />

sediment<br />

Freshwater<br />

sediment<br />

Marine<br />

Sediment<br />

Whole<br />

organism<br />

residue<br />

Whole<br />

organism<br />

residue<br />

Bi<strong>of</strong>ilm<br />

residues<br />

Mining sites in the<br />

Upper Colorado Basin<br />

Exposure<br />

Concentrations<br />

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