A positive indicator for a waterways overall health, can be measured by the diversity of its invertebrate population. In this photograph of the Middle Fork Willamette, a tremendous number of Caddisfly larva are feeding on algae and detritus. Elijah Bristow State Park, Oregon.
Elijah Bristow State Park, Lane County, Middle Fork Willamette River, Oregon State ParksCaddisfly Larvae in Willamette River
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Description
A positive indicator for a waterways overall health, can be measured by the diversity of its invertebrate population. In this photograph of the Middle Fork Willamette, a tremendous number of Caddisfly larva are feeding on algae and detritus. Elijah Bristow State Park, Oregon.
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