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GP1 West Transect – 2016

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Detailed Description

Permanent Control Site: GP1 West Transect; Depth: 7.9 m (25.9 feet); Distance from river mouth: 19.0 Kilometers (11.8 Miles) east; Pre/Post Dam Removal: 5 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. Red (1:58seconds) and brown seaweed was abundant. Eight species of browns were recorded and mainly consisted of the perennial seaweed Pterygophora californica (0:20, 0:25 seconds) and Pleurophycus gardneri (0:29, 2:11 seconds). Bull kelp Nereocystis luetkeana was also present (1:43, 2:03 seconds). Growing on a boulder at 0:28 seconds are pink crustose coralline algae and yellow staghorn bryozoa (Heteropora pacifica). Green sea urchins (Strongylocentrotus droebachiensis) were present (0:26 seconds) but not as abundant as the east transect (see video ‘GP1 East Transect – 2016’). USGS diver Steve Rubin can be seen surveying at 0:59 seconds.




Public Domain.