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GP2 West Transect – 2012

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Detailed Description

Permanent Control Site: GP2 West Transect; Depth: 12.7 Meters (41.8 Feet); Distance from river mouth: 18.8 Kilometers (11.6 Miles) east; Pre/Post Dam Removal: 10 months post-dam removal; Lat/Long: 48.12781102,-123.31712832; Site Description: This site was established as the eastern control. Substrate is mainly a gravel/sand/cobble mixture surrounding boulders. Red, green and brown seaweed is abundant though growth is less dense than at shallower sights. Four species of browns were recorded including Agarum fimbriatum (0:29, 0:38seconds) growing on the boulders, Saccharina spp. (1:44, 1:54 seconds) and the perennial seaweed Pterygophora californica (0:40 seconds). A variety of invertebrates were present but none were abundant. Invertebrates seen on video: sunflower sea star Pycnopodia helianthoides (0:35 seconds), blood sea star Henricia leviuscula leviuscula (0:46, 1:24 seconds), giant sea cucumber Parastichopus californicus (1:50, 1:59seconds), graceful decorator crab Oregonia gracilis (0:35 seconds), egg case of the moon snail Euspira lewisii (2:03 seconds), cross jellyfish Mitrocoma cellularia (2:06 seconds).




Public Domain.