Before, during and after the removal of two dams on the Elwha River, an interagency dive team led by scientists from the US Geological Survey, Washington Sea Grant, and the Lower Elwha Klallam Tribe investigated the ecology of the nearshore zone adjacent to the Elwha River mouth. A few visual examples of the methods employed are shown in this edited and annotated video compilation. See Rubin et al., 2017 ([ Ссылка ]) for additional detail

This video is part of the Elwha Nearshore Benthic Marine Community Surveys project. Visit the website at [ Ссылка ] for more information and videos.

This video has no audio. Below is a description of what it shows:

USGS diver collecting data along the transect tape on the seafloor near the Elwha River mouth. A diver taking photos of a specimen on the seafloor.

Data is recorded on plastic data sheets. A diver next to a measuring tape writes on a data sheet held in a stiff plastic frame. A diver swims along a measuring tape and writes with a pencil that is connected to the plastic sheet.

Transect tape is removed after surveying. A diver rolls up the tape with a crank onto a large roll.

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