Images

Artificial light at night (ALAN) can be a threat to aquatic ecosystems.  Light in the sky penetrates through the water and brightens the water column. Even small increases in light at night can dramatically improve some predators’ ability to hunt and kill their prey.

Artificial light at night (ALAN) can be a threat to aquatic ecosystems.  Light in the sky penetrates through the water and brightens the water column. Even small increases in light at night can dramatically improve some predators’ ability to hunt and kill their prey.

Dr. Jill Rolland, Director of the USGS Northwest- Pacific Islands Region, visited Idaho during the week of September 23, 2024. During her visit, Dr.

USGS meets with four fisheries commissions at 2024 American Fisheries Society (AFS) meeting; Honolulu, Hawaii, HI; collaboration; fisheries; meeting; inter-regional; Greg McClenchy GLFC; Rachel Reagan USGS WFRC; Joshua Miller USGS GLSC; John Dettmers GLFC; Daniel Wieferich USGS CSS; Deborah Epperson USGS WARC; Marc Gaden GLFC; Tom O'Connell USGS EESC; Bob Beal ASMFC

This is a photo of Bob Beal kicking off the 2024 American Fisheries Society (AFS) Symposium in Honolulu, Hawaii. 

This is Gael Kurath at her retirement party. Viruses and infectious diseases are natural components of every ecosystem. In aquatic ecosystems of the Pacific Northwest infectious hematopoietic necrosis virus (IHNV) is a significant viral pathogen of many salmonid fish populations.

Photo shared by Dave Beauchamp from the first week of quantitative light measurements for the Artificial Light At Night (ALAN) project. This week was a big data collection push, with 2 boats out nightly Tuesday through Thursday, plus day activities and prep. 

Photos shared by Dave Beauchamp from the first week of quantitative light measurements for the Artificial Light At Night (ALAN) project:

This week was a big data collection push, with 2 boats out nightly Tuesday through Thursday, plus day activities and prep. 

Profile view of a Bell Jet Helicopter with a thermal infrared and true-color sensor co-mounted to the underside of the nose. These sensors are used in airborne thermal infrared surveys for remotely sensing land/water surface temperature.

This is a photo of a sunset in August, 2024 in Klamath Falls, OR. The Western Fisheries Research Center (WFRC) conducts work on fish health and monitoring in this area.

This is a photo of pelicans on the Upper Klamath Lake in Klamath Falls, OR. The USGS Western Fisheries Research Center (WFRC) has a field station in Klamath Falls. Scientists at the WFRC monitor suckers in the Upper Klamath Lake.

This is a photo of the fisheries scientist, Paul Hershberger, fishing for salmon predators in Lake Washington.

Fish health monitoring efforts in Upper Klamath Lake have revealed a high prevalence of warmwater pathogens. The fish health team is investigating parasites as a potential threat to the vulnerable sucker populations.

This is a photo of Paul Hershberger at Marrowstone Marine Field Station Lab. Dr. Hershberger studies diseases in fish.

A landscape of sagebrush (Artemisia tridentada) and yellow sweet clover (Melilotus officinalis) on the Charles M. Russell National Wildlife Refuge in Montana.

A storm rolls in during field work at the Charles M. Russell National Wildlife Refuge in Montana. Crews were measuring plant cover and other site characteristics. Sagebrush and yellow sweet clover are visible.

Snails collected from Upper Klamath Lake are being used in experiments in the Western Fisheries Research Center’s Seattle Laboratory to study the impacts of eye flukes on the health of endangered suckers.

Explore the underwater world of Skagit Bay eelgrass meadows where a diverse group of fish are visible, including the elegant Pacific Herring school , the unusual Snake Prickleback, the striking Pacific Spiny Dogfish, the graceful Shiner Perch, and the majestic juvenile Chinook Salmon.

A five-person USGS crew collecting Rapid and Other Assessment and Monitoring (ROAM) density data in southwest Idaho. One person is inspecting a plant in the foreground, while the rest of the team are identifying and counting individual plants during a radial density belt. 

This is a photo of the new USGS Western Fisheries Research Center Columbia River Research Laboratory building.

A downward-facing photo taken on a Rapid and Other Methods for Assessment and Monitoring (ROAM) plot that is within a fuel break. The photo includes a lot of gravel and bare ground, with intermixed small grasses, forbs, and shrubs.