K1 East Transect – 2012

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Detailed Description

Permanent Site: K1 East Transect; Depth: 6.5 Meters (21.4 Feet); Distance from river mouth: 4.5 Kilometers (2.8 Miles) east; Pre/Post Dam Removal: 10 months post-dam removal; Lat/Long: 48.13592923,-123.5101581; Site Description: This permanent transect was only established post dam-removal after it was discovered that the degree of seaweed loss was more extensive than expected at the other permanent sites. Three sites, two further east (J1, K1) and one further west (L1) of the river mouth, were set up on former random sites known to have seaweed. Pre-dam removal conditions of the K1 East area can be seen on the video ‘5SM18 East Transect – 2008’. This is a shallow site. Sediment is a gravel/sand mixture. Seaweed is was present but not abundant as opposed to the west transect (K1 West Transect – 2012). Five species of browns were recorded including bull kelp Nereocystis luetkeana (1:18 seconds), Saccharina spp. (0:20 seconds) and the perennial seaweed Pterygophora californica (1:13, 1:16 seconds). A variety of invertebrates are present but none are abundant. Invertebrates seen on video: sand-rose anemone Urticina columbiana (1:05 seconds). Visibility and surge was bad on this date and video is of poor quality.
 

Details

Image Dimensions: 1280 x 720

Date Taken:

Length: 00:01:27

Lat / Long: 48.135929230000 / -123.510158100000

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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