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A2 East Transect – 2014

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Detailed Description

Permanent Site: A2 East Transect; Depth: 12.6 Meters (Feet 41.5); Distance from river mouth: Kilometers 1.8 (1.1 Miles); Pre/Post Dam Removal: 3 years post-dam removal; Lat/Long: 48.14130295, -123.58766124; Site Description: One of our deeper sites at over 40 feet. Sediment is primarily sand/sandy mud. Seaweeds are absent again this year. The sandy substrate is covered in a thick, brownish layer of diatoms (a single-celled algae). Feather duster tubeworms are abundant, especially the species Eudistylia vancouveri, Schizobranchia insignis and Eudistylia polymorpha. A clump of E. vancouveri surrounded at the base by S. insignis is seen at 0:05 seconds. Other invertebrates seen on video: morning sun sea star Solaster dawsoni (1:30 seconds). Elwha River Nearshore, Strait of Juan de Fuca, Washington, USA




Public Domain.