Images

Taking a break in the fog on the San Joaquin River while trawling aboard the USGS Research Vessel Munson II.

Underwater image of Juvenile Chinook salmon in Cougar Reservoir in the Willamette Basin.

Juvenile wolf eel - Scuba divers from the U.S. Geological Survey’s Western Fisheries Research Center, Washington Sea Grant, EPA and the Lower Elwha Klallam Tribe collected data and images from a long-term study of the Elwha River dam removals and the resulting effects on the nearshore ecosystem.

Moon snails - Scuba divers from the U.S. Geological Survey’s Western Fisheries Research Center, Washington Sea Grant, EPA and the Lower Elwha Klallam Tribe collected data and images from a long-term study of the Elwha River dam removals and the resulting effects on the nearshore ecosystem.

Fish health principle investigators, students, post-docs, and technicians from different research groups work together as a fish processing team on days when large numbers of fish require sampling.  They are collecting multiple tissues from each fish for testing virus infection and host immune response.

Researcher processing a Lost River sucker at Sucker Springs on Upper Klamath Lake.

Fish biologist with a female Lost River sucker from Sucker Springs on Upper Klamath Lake.

Re-vegetation in the river valley at the Elwha River restoration site. Image available at Olympic National Park flickr site.

Pahranagat Roundtail Chub (Gila robusta jordani) in the Pahranagat River, NV.

USGS Hydrologist Chris Magirl captures image of the Elwha River flooding for the first time following dam removal. This location is just downstream of the former Elwha Dam which used to stand at the area near the top of the photograph.

Visitors at Glines Canyon East Abutment in Olympic National Park, the location of the Elwha River Restoration project. Image available at Olympic National Park flickr site.

Different size and age classes of experimental Specific-Pathogen-Free Pacific herring reared at the Marrowstone Marine Field Station.

Nucleospora (Enterocytozoon) salmonis infected fingerling steelhead kidney imprint. Note parasitized lymphoblasts containing spherical, light colored, nondescript, nuclear inclusions (arrows). L-G stain. X1000. (Courtesy of B. MacConnell)

Aerial photograph of the mouth of the Elwha River showing sediment deposits from dam removal. Aerial assistance by LightHawk and plane piloted by Dr. Milton Bennett.

Aerial photograph of the Elwha River flowing through the remains of the Glines Canyon Dam during the 3rd year of the dam removal project. Aerial assistance by LightHawk and plane piloted by Dr. Milton Bennett.

Connie McKibben and Carla Conway (USGS) taking kidney samples from adult female Chinook salmon for detection and quantification of Renibacterium salmoninarum (Rs) in the fish, while Joy Evered observes.  Dr. Evered is a USFWS Veterinary Medical Officer and the USFWS Project Officer for this research project.

Staff at the Klamath Falls Field Station evaluate Lost River and shortnose sucker habitat relative to the presence, abundance, and health of the fish.  Sucker distribution among habitats is evaluated using occupancy models that account for imperfect detection.

Dr. Wendy Olson, USFWS biologist (orange rain pants) records data for female spring Chinook salmon being spawned at the hatchery. Among the data recorded are fin clips designating treatment groups for the research project (erythromycin treatment, tulathromycin treatment, or no treatment).

Installation of two 20' PIT tag antennas.  Antennas are used to monitor movements of Lost River and shortnose suckers and Redband trout through the Klamath Basin.

Close-up image of Nisqually Delta eelgrass.

Graduate student Daniel Hernandez, from the University of Washington School of Aquatic and Fishery Sciences, measures virus for a Chinook salmon infection experiment in the WFRC wet lab.  Doug McKenney, USGS volunteer is assisting.