D2 West Transect – 2017

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Detailed Description

Permanent Site: D2 West Transect; Depth: 12.3 Meters (40.3 Feet); Distance from river mouth: 0.3 Kilometers (0.2 Miles); Pre/Post Dam Removal: 6 years post-dam removal Lat/Long: 48.15233001,-123.56896603; Site Description: This site is right off the mouth of the river. In previous years the substrate has been mainly gravel with some cobble and about 10% sand but this year sand increased to 43%. Small brown and red seaweeds were present along entire transect (0:05 seconds). Six different brown seaweed species were noted with the acid kelp Desmarestia (1:20 seconds) being very abundant. Small bull kelp (Nereocystis luetkeana) were observed (1:36, 1:42 seconds). Dead clam shells are scattered throughout the transect (1:31 seconds). Invertebrates were present but not abundant. Invertebrates seen on video: blood sea star Henricia leviuscula leviuscula (0:34 seconds). A sanddab flatfish darts across the transect tape at 0:14 seconds. USGS diver Nancy Elder surveys invertebrates at 0:07 seconds. 
 

Details

Image Dimensions: 1280 x 720

Date Taken:

Length: 00:01:54

Location Taken: Elwha River, WA, US

Video Credits

Editor: Nancy Elder, Fishery Biologist, Marrowstone Marine Field Station, (nelder@usgs.gov)

Transcript

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