GP1 East Transect – 2014

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Detailed Description

Permanent Control Site: GP1 East Transect; Depth: 7.7 Meters (25.1 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,-123.31538047; 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 (0:22, 0:30 seconds) and brown seaweed was abundant. Five species of browns were recorded and mainly consisted of the perennial seaweed Pterygophora californica (0:06, 2:19 seconds), Saccharina spp. (0:46 seconds) and Pleurophycus gardneri (1:32, 2:14 seconds). The pink growth on a boulder is a crustose coralline algae (1:29 seconds). This year, green sea urchins (Strongylocentrotus droebachiensis) were very abundant (1:11, 1:26 seconds). Other invertebrates seen on video: orange unidentified sponge (2:00 seconds), staghorn bryozoan Heteropora pacifica (yellow clumps at 0:46 seconds), feather duster tubeworm Chone aurantiaca (small, heart shape on right of tape at 1:51 seconds), feather duster tubeworm Eudistylia vancouveri (0:14 seconds), blood sea star Henricia leviuscula leviuscula (1:20, 2:16 seconds).
 

Details

Date Taken:

Length: 00:02:33

Lat / Long: 48.118525210000 / -123.315380470000

Location Taken: US

Video Credits

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

Transcript

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