J1 West Transect – 2016

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Detailed Description

Permanent Site: J1 West Transect; Depth: 9.8 Meters (32.3 Feet); Distance from river mouth: 6.6 Kilometers (4.1 Miles) east; Pre/Post Dam Removal: 5 years post-dam removal; Lat/Long: 48.13607725,-123.48002186; Site Description: This site is medium depth. Substrate is mainly a gravel/sand mixture. Both red (0:25 seconds) and brown seaweed growth is dense and appears to be at pre-dam removal levels. Eight species of brown seaweed were recorded and consist mainly of the perennial seaweed Pterygophora californica, Saccharina spp. (0:36, 1:16 seconds), acid kelp Desmarestia (2:16 seconds) and Laminaria ephemera. Alaria marginata (2:01 seconds) and three-ribbed kelp Cymathere triplicata (0:08 seconds) were also present. Two tubeworm species are still very abundant, Eudistylia vancouveri (0:59, 1:13 seconds) and Schizobranchia insignis, as well as butter clams (Saxidomus gigantea). The siphon of a rough paddock (Zirfaea pilsbryi) is seen on right of tape at 1:23 seconds.
 

Details

Image Dimensions: 1280 x 720

Date Taken:

Length: 00:02:28

Lat / Long: 48.136077250000 / -123.480021860000

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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