GP1 West Transect – 2017

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Detailed Description

Permanent Control Site: GP1 West Transect; Depth: 8.0 m (26.2 feet); Distance from river mouth: 19.0 Kilometers (11.8 Miles) east; Pre/Post Dam Removal: 6 years post-dam removal; Lat/Long: 48.11852521,-123.31605203; Site Description: This site was established as the eastern control. Depth is medium-shallow. Substrate is mainly a gravel/sand/cobble mixture surrounding numerous large boulders. Wave surge was bad this day making visibility poor. This site always has abundant brown seaweed. Nine species of browns were recorded and mainly consisted of the perennial seaweed Pterygophora californica (2:22 seconds) and Pleurophycus gardneri (2:40, 2:42 seconds). Attached to a boulder at 0:21 seconds are three holdfasts of the bull kelp Nereocystis luetkeana. An orange sea cucumber is under a boulder at 0:16 seconds and yellow staghorn bryozoa (Heteropora pacifica) are on top of another boulder at 0:23 seconds. 
 

Details

Image Dimensions: 1280 x 720

Date Taken:

Length: 00:02:49

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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