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Filter Total Items: 712
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Year Published: 2005

Effects of temperature on survival and development of early life stage Pacific and western brook lampreys

We examined the effects of temperature (10, 14, 18, and 22??C) on survival and development of Pacific lampreys Lampetra tridentata and western brook lampreys L. richardsoni during embryological and early larval stages. The temperature for zero development was estimated for each species, and the response to temperature was measured as the...

Meeuwig, M.H.; Bayer, J.M.; Seelye, J.G.
Effects of temperature on survival and development of early life stage Pacific and western brook lampreys; 2005; Article; Journal; Transactions of the American Fisheries Society; Meeuwig, M. H.; Bayer, J. M.; Seelye, J. G.

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Year Published: 2005

Evaluation of a prototype surface flow bypass for juvenile salmon and steelhead at the powerhouse of Lower Granite Dam, Snake River, Washington, 1996-2000

A surface flow bypass takes advantage of the natural surface orientation of most juvenile salmon Oncorhynchus spp. and steelhead O. mykiss by providing a route in the upper water column that downstream migrant fishes can use to pass a hydroelectric dam safely. A prototype structure, called the surface bypass and collector (SBC), was retrofitted on...

Johnson, G.E.; Anglea, S.M.; Adams, N.S.; Wik, T.O.
Evaluation of a prototype surface flow bypass for juvenile salmon and steelhead at the powerhouse of Lower Granite Dam, Snake River, Washington, 1996-2000; 2005; Article; Journal; North American Journal of Fisheries Management; Johnson, G. E.; Anglea, S. M.; Adams, N. S.; Wik, T. O.

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Year Published: 2005

Evidence of detrimental effects of environmental contaminants on growth and reproductive physiology of white sturgeon in impounded areas of the Columbia River

This study sought to determine whether wild white sturgeon from the Columbia River (Oregon) were exhibiting signs of reproductive endocrine disruption. Fish were sampled in the free-flowing portion of the river (where the population is experiencing reproductive success) and from three reservoirs behind hydroelectric dams (where fish have reduced...

Feist, G.W.; Webb, M.A.H.; Gundersen, D.T.; Foster, E.P.; Schreck, C.B.; Maule, A.G.; Fitzpatrick, M.S.
Evidence of detrimental effects of environmental contaminants on growth and reproductive physiology of white sturgeon in impounded areas of the Columbia River; 2005; Article; Journal; Environmental Health Perspectives; Feist, G. W.; Webb, M. A. H.; Gundersen, D. T.; Foster, E. P.; Schreck, C. B.; Maule, A. G.; Fitzpatrick, M. S.

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Year Published: 2005

Hydrologic changes in urban streams and their ecological significance

Urban development modifies the production and delivery of runoff to streams and the resulting rate, volume, and timing of streamflow. Given that streamflow demonstrably influences the structure and composition of lotic communities, we have identified four hydrologic changes resulting from urban development that are potentially significant to...

Konrad, C.P.; Booth, D.B.
Hydrologic changes in urban streams and their ecological significance; 2005; Article; Journal; American Fisheries Society Symposium; Konrad, C. P.; Booth, D. B.

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Year Published: 2005

Ichthyophonus in Puget Sound rockfish from the San Juan Islands archipelago and Puget Sound, Washington, USA

In vitro explant cultures identified Ichthyophonus in 10.9% of 302 Puget Sound rockfish Sebastes emphaeus sampled from five sites in the San Juan Islands archipelago and Puget Sound, Washington, in 2003. None of the infected fish exhibited visible lesions and only a single fish was histologically positive. Significantly more females were infected...

Halos, D.; Hart, S.A.; Hershberger, P.; Kocan, R.
Ichthyophonus in Puget Sound rockfish from the San Juan Islands archipelago and Puget Sound, Washington, USA; 2005; Article; Journal; Journal of Aquatic Animal Health; Halos, D.; Hart, S. A.; Hershberger, P.; Kocan, R.

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Year Published: 2005

Morphology and aging precision of statoliths from larvae of Columbia river basin lampreys

The general morphology and precision associated with age determination of statoliths from larval Pacific lampreys Lampetra tridentata and western brook lampreys L. richardsoni found within the Columbia River basin were examined. Significant positive correlations were observed between the size of left and right statoliths from individuals....

Meeuwig, M.H.; Bayer, J.M.
Morphology and aging precision of statoliths from larvae of Columbia river basin lampreys; 2005; Article; Journal; North American Journal of Fisheries Management; Meeuwig, M. H.; Bayer, J. M.

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Year Published: 2005

Passage behavior of radio-tagged subyearling Chinook salmon at Bonneville Dam, 2004

Flow augmentation, spill, surface collection, and improved turbine guidance systems have been identified as potential management actions to improve passage efficiency and survival of outmigrating juvenile salmonids. The U.S. Army Corps of Engineers (USACE), along with regional, state, and federal resource agencies, has designed and implemented...

Reagan, R.E.; Evans, S.D.; Wright, L.S; Farley, M.J.; Adams, N.S.; Rondorf, D.W.

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Year Published: 2005

Passage behavior of radio-tagged yearling Chinook salmon and steelhead at Bonneville Dam, 2004: Revised for corrected spill annual report

Flow augmentation, spill, surface collection, and improved turbine guidance systems have been identified as potential management actions to improve passage efficiency and survival of outmigrating juvenile salmonids. The U.S. Army Corps of Engineers (USACE), along with regional, state, and federal resource agencies, has designed and implemented...

Reagan, R.E.; Evans, S.D.; Wright, L.S; Farley, M.J.; Adams, N.S.; Rondorf, D.W.

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Year Published: 2005

Prevalence and spatial distribution of intraerythrocytic parasite(s) in Puget Sound rockfish (Sebastes emphaeus) from the San Juan Archipelago, Washington (USA)

Two morphologically distinct forms of an intraerythrocytic parasite(s) were detected by microscopic observation of Giemsa-stained blood films in 45.7% of 119 rockfish (Sebastes emphaeus) from the San Juan Archipelago (Washington State, U.S.A.). Infection prevalence for both forms was 53% in males, 44% in females, and 33% in fish of undetermined...

Van Der Straaten, N.; Jacobson, A.; Halos, D.; Hershberger, P.; Kocan, A.A.; Kocan, R.
Prevalence and spatial distribution of intraerythrocytic parasite(s) in Puget Sound rockfish (Sebastes emphaeus) from the San Juan Archipelago, Washington (USA); 2005; Article; Journal; Journal of Parasitology; Van Der Straaten, N.; Jacobson, A.; Halos, D.; Hershberger, P.; Kocan, A. A.; Kocan, R.

Filter Total Items: 858
July 20, 2014

K1 East Transect – 2014 - YouTube

Permanent Site: K1 East Transect; Depth: 6.6 Meters (21.8 Feet); Distance from river mouth: 4.5 Kilometers (2.8 Miles) east; Pre/Post Dam Removal: 3 years post-dam removal; Lat/Long: 48.13592923,-123.5101581; Site Description: Visibility and surge was bad on this date so video is of poor quality. This is a shallow site. Sediment is a gravel/sand mixture. Seaweed was sparse

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July 19, 2014

L1 East Transect – 2014

Permanent Site: L1 East Transect; Depth: 11.3 Meters (37.1 Feet); Distance from river mouth: 2.3 Kilometers (1.4 Miles) west; Pre/Post Dam Removal: 3 years post-dam removal; Lat/Long: 48.13957527,-123.59359993; Site Description: This transect is medium depth. Substrate is still mainly fine sediment/sand/mud with a few scattered boulders. Seaweed is gone except small reds (

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July 19, 2014

L1 West Transect – 2014

Permanent Site: L1 West Transect; Depth: 11.0 Meters (36.2 Feet); Distance from river mouth: 2.3 Kilometers (1.4 Miles) west; Pre/Post Dam Removal: 3 years post-dam removal; Lat/Long: 48.13957527,-123.59427175; Site Description: This transect is medium depth. The first 20 meters contains scattered boulders (0:18 seconds). Where there are no boulders, substrate is still

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Northern spotted owl grabbing a mouse off a branch
July 2, 2014

Spotted Owl

Northern spotted owls (Strix occidentalis caurina) are mostly non-migratory, long-lived birds whose populations have declined in mature forests of western North America.

Northern spotted owl perched on a tree branch
July 2, 2014

Spotted Owl

Northern spotted owls (Strix occidentalis caurina) are mostly non-migratory, long-lived birds whose populations have declined in mature forests of western North America.

Nisqually Delta eelgrass
June 12, 2014

Nisqually Delta eelgrass

Close-up image of Nisqually Delta eelgrass.

A volcano monitoring “spider” deployed by helicopter to the Oso landslide to track ground movement and seismicity
June 4, 2014

A volcano monitoring “spider” deployed to the Oso landslide

A volcano monitoring “spider” was deployed by helicopter to the Oso landslide to track ground movement and seismicity while search-and-rescue operations were ongoing.  The spider was equipped with a seismometer (mounted on the far left leg) to track ground shaking and GPS (a dome-shaped instrument on the upper mast) to track subtle ground movement.  Data was transmitted

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Landslide and river
May 18, 2014

landslide

Oso Landslide

Image: Spider Unit & 2014 Washington Landslide
March 31, 2014

Spider Unit & 2014 Washington Landslide

The photograph shows a spider unit, which is being used to help study the landslide that occurred in northwest Washington on March 22, 2014. Spiders are portable instrumentation packages that contain high-precision GPS units for detecting landslide movement as well as geophones for detecting small vibrations. The spiders can be emplaced by hovering helicopters
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Attribution: Natural Hazards
Image: Spider Unit and 2014 Washington Landslide
March 31, 2014

Spider Unit and 2014 Washington Landslide

The photograph shows a spider unit being deployed by helicopter to help study the landslide that occurred in northwest Washington on March 22, 2014. Spiders are portable instrumentation packages that contain high-precision GPS units for detecting landslide movement as well as geophones for detecting small vibrations.
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Attribution: Natural Hazards
Image: Oso, Washington Landslide
March 31, 2014

Oso, Washington Landslide

Oblique aerial photograph of the Oso, Washington landslide, showing the entire extent of the landslide source area and path.

Location: State Route 530, Oso, Washington

Attribution: Natural Hazards
Filter Total Items: 351
USGS
May 4, 2006

One of every four fishes in streams of 12 western states is non-native, according to a U.S. Geological Survey (USGS) study published in November 2005 in the North American Journal of Fisheries Management. And, researchers found, it´s not just that there are a lot of non-native fishes but they are also widespread...

USGS science for a changing world logo
May 4, 2006

One of every four fishes in streams of 12 western states is non-native, according to a U.S. Geological Survey (USGS) study published in November 2005 in the North American Journal of Fisheries Management. 

USGS
February 28, 2006

The USGS is releasing 28-minutes of new b-roll footage of Mount St. Helens, taken by staff at the USGS Cascades Volcano Observatory. This b-roll is available by contacting Don Becker at USGS/EROS.

USGS science for a changing world logo
February 28, 2006

The USGS is releasing 28-minutes of new b-roll footage of Mount St. Helens, taken by staff at the USGS Cascades Volcano Observatory. This b-roll is available by contacting Don Becker at USGS/EROS.

USGS science for a changing world logo
January 9, 2006

The U.S. Geological Survey has issued the following advisory of possible landslides for the Seattle area:

Date: Friday, January 06, 2006, 11:00 a.m., PST

Affected Area: Western parts of King, Snohomish and Pierce Counties, Washington

USGS
January 9, 2006

The U.S. Geological Survey has issued the following advisory of possible landslides for the Seattle area:

USGS
September 21, 2005

The USGS is releasing 20-minutes of video of Mount St Helens, taken by staff at the USGS Cascades Volcano Observatory (CVO). The video will be available in Vancouver at the Friday, September 23, news event or by contacting Don Becker at the EROS Data Center. Public release of the video is embargoed until Friday, September 23 at 10 a.m. PDT.

USGS
September 20, 2005

It’s been a year since Mount St Helens suddenly showed signs of volcanic unrest. Join CVO scientists for a retrospective and future analysis of the ongoing eruption.

USGS science for a changing world logo
April 29, 2005

Reston, VA – The U.S. Geological Survey (USGS) today released the first ever comprehensive and systematic review of the 169 U.S. volcanoes and established a framework for a National Volcano Early Warning System (NVEWS) which calls for a 24-hour seven-day-a-week Volcano Watch Office and enhanced instrumentation and monitoring at targeted volcanoes.

USGS science for a changing world logo
April 8, 2005

Another Great Earthquake in the Indian Ocean, but What About the Tsunami?

Steam Explosions, Earthquakes, and Volcanic Eruptions--What’s in Yellowstone’s Future?

Radio-Monitored Salmon Shed Light on Snake River for Water Managers

Itching to Know More About America’s Modern Gold Rush?

Hazards and Cooperation Spawn New Uses for Geospatial Information

 

USGS science for a changing world logo
December 6, 2004

USGS Director Chip Groat is available for interviews on Dec. 6-7. Please call the contact, above. Groat will present Science for Ecosystem Restoration on Mon, Dec. 6 from 2:20-2:50pm.

USGS science for a changing world logo
October 25, 2004

The U.S. Geological Survey (USGS) presented the 2004 John Wesley Powell Award to governmental, educational and organizational partners who have worked with the USGS to strengthen The National Map, to teach the importance of remote sensing data, to communicate USGS science, and to provide information to water managers about floods.