J1 East Transect – 2017

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Detailed Description

Permanent Site: J1 East Transect; Depth: 9.1 Meters (29.8 Feet); Distance from river mouth: 6.7 Kilometers (4.1 Miles) east; Pre/Post Dam Removal: 6 years post-dam removal; Lat/Long: 48.13607725,-123.47935008; Site Description: This site is medium depth. Substrate is mainly a gravel/sand mixture. Visibility was poor this day. Both red (0:51 seconds) and brown seaweed growth is dense and appears to be at pre-dam removal levels. Six species of brown seaweed were recorded, consisting mainly of the perennial seaweed Pterygophora californica and Saccharina. Bull kelp (Nereocystis luetkeana) was common (0:16, 0:30 seconds) and the only seaweed species able to be seen clearly on the video. Two tubeworm species are still very abundant, Eudistylia vancouveri and Schizobranchia insignis, as well as butter clams (Saxidomus gigantea).
 

Details

Image Dimensions: 1280 x 720

Date Taken:

Length: 00:01:28

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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