D2 East Transect – 2012

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Detailed Description

Permanent Site: D2 East Transect; Depth: 12.0 Meters (39.5 Feet); Distance from river mouth: 0.3 Kilometers (0.2 Miles); Pre/Post Dam Removal: 10 months post-dam removal; Lat/Long: 48.15233001,-123.56829403; 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 (0:07, 0:56 seconds). A few red seaweeds remain (0:57, 1:06 seconds). The feather duster tubeworm Chone aurantiaca has become abundant. Invertebrates seen on video: rainbow sea star Orthasterias koehleri (0:20 seconds), blood sea star Henricia leviuscula leviuscula (1:15seconds), sand-rose anemone Urticina columbiana (1:52 seconds).


Date Taken:

Length: 00:02:08

Lat / Long: 48.152330010000 / -123.568294030000

Location Taken: US

Video Credits

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