H2 East Transect – 2015

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Detailed Description

Permanent Site: H2 East Transect; Depth: 8.1 Meters (26.7 Feet); Distance from river mouth: 2.6 Kilometers (1.6 Miles) east; Pre/Post Dam Removal: 4 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 and browns was pronounced but has not yet returned to pre-dam removal levels. Seven different species of brown seaweeds are present, including Alaria marginata (0:22, 0:46 seconds), three-ribbed kelp Cymathere triplicata (1:22, 1:38 seconds), acid kelp Desmarestia (0:38 seconds), Saccharina spp. (0:42 seconds) and the perennial seaweed Pterygophora californica (1:10 seconds). Two small (~8 cm) sunflower sea stars (Pycnopodia helianthoides) are seen at 1:57 and 2:32 seconds. 
 

Details

Image Dimensions: 1280 x 720

Date Taken:

Length: 00:02:54

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)

Transcript

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