H2 East Transect – 2016

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Detailed Description

Permanent Site: H2 East Transect; Depth: 8.1 Meters (26.6 Feet); Distance from river mouth: 2.6 Kilometers (1.6 Miles) east; Pre/Post Dam Removal: 5 years post-dam removal; Lat/Long: 48.15008216,-123.53210661; Site Description: This site is medium to shallow depth. Substrate is mainly gravel with some sand, cobble and an occasional boulder and has not changed since dam removal. Seaweed growth of both reds (0:55seconds) and browns was pronounced and almost as much as pre-dam removal levels. Five different species of brown seaweeds are present, including Alaria marginata (0:15 seconds), three-ribbed kelp Cymathere triplicata (1:11 seconds) and the perennial seaweed Pterygophora californica (0:20, 0:43 seconds). Horse clams (Tresus capax) have become very abundant. Invertebrates seen on video: red rock crab Cancer productus (0:41, 0:45 seconds).


Date Taken:

Length: 00:02:15

Lat / Long: 48.150082160000 / -123.532106610000

Location Taken: US

Video Credits

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