D2 West Transect – 2012

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Detailed Description

Permanent Site: D2 West Transect; Depth: 12.8 Meters (41.9 Feet); Distance from river mouth: 0.3 Kilometers (0.2 Miles); Pre/Post Dam Removal: 10 months post-dam removal; Lat/Long: 48.15233001,-123.56896603; Site Description: This site is right off the mouth of the river. Substrate is mainly gravel with some sand. Seaweeds are now mostly gone except for the perennial seaweed Pterygophora californica, whose stalks remain but contain only tattered fronds or no fronds at all (0:37, 1:10 seconds). A few red seaweeds remain. The feather duster tubeworm Chone aurantiaca has become abundant. Two gumboot chiton (Cryptochiton stelleri) can be seen at 0:45 seconds (appear as large, oval rocks). Other invertebrates seen on video: morning sun sea star Solaster dawsoni (1:20, 1:37 seconds), blood sea star Henricia leviuscula leviuscula (1:31 seconds), rainbow sea star Orthasterias koehleri (1:37seconds).
 

Details

Date Taken:

Length: 00:01:44

Lat / Long: 48.152330010000 / -123.568966030000

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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