L1 East Transect – 2014

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Detailed Description

Permanent Site: L1 East Transect; Depth: 11.3 Meters (37.1 Feet); Distance from river mouth: 2.3 Kilometers (1.4 Miles) west; Pre/Post Dam Removal: 3 years post-dam removal; Lat/Long: 48.13957527,-123.59359993; Site Description: This transect is medium depth. Substrate is still mainly fine sediment/sand/mud with a few scattered boulders. Seaweed is gone except small reds (1:06 seconds) and a few Agarum fimbriatum growing on boulders (0:38 seconds) which are also covered in articulated coralline algae (0:40, 1:14 seconds). Feather duster tubeworms (0:11 seconds) and truncate softshell clams (Mya truncata) are still present but no longer abundant. Invertebrates seen on video: stubby rose anemone Urticina coriacea (0:09, 1:11 seconds); sand-rose anemone Urticina columbiana (0:29, 1:19 seconds); staghorn bryozoan Heteropora pacifica (yellow clumps on boulder at 0:40, 1:14 seconds).
 

Details

Image Dimensions: 1280 x 720

Date Taken:

Length: 00:01:50

Lat / Long: 48.139575270000 / -123.593599930000

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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