GP1 West Transect – 2014

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Detailed Description

Permanent Control Site: GP1 West Transect; Depth: 7.4 Meters (24.2 Feet); Distance from river mouth: 19.0 Kilometers (11.8 Miles) east; Pre/Post Dam Removal: 3 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 (0:32, 0:45 seconds) and brown seaweed was abundant. Six species of browns were recorded and mainly consisted of the perennial seaweed Pterygophora californica (0:23, 1:09 seconds), Saccharina spp. (0:29, 0:52 seconds) and Pleurophycus gardneri (1:10, 1:22 seconds). Growing on a boulder at 1:56 seconds are pink crustose coralline algae and yellow staghorn bryozoa (Heteropora pacifica). Though green sea urchins (Strongylocentrotus droebachiensis) were abundant on the east transect on this date (video ‘GP1 East Transect – 2014’), none were seen on the western transect. 


Date Taken:

Length: 00:02:02

Lat / Long: 48.118525210000 / -123.316052030000

Location Taken: US

Video Credits

Editor: Chloe Dawson
USGS Contact: Nancy Elder, Fishery Biologist, Marrowstone Marine Field Station, (