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Filter Total Items: 494
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Year Published: 2016

First record of the common sandpiper for the Hawaiian Islands

With a breeding range spanning Eurasia and a winter range extending from Africa to Australasia, the Common Sandpiper (Actitis hypoleucos) is indeed the common and familiar sandpiper of the Old World. It is the Old World counterpart of the Spotted Sandpiper (A. macularius) of the Americas and its only congener. The Spotted Sandpiper is a vagrant to...

Pratt, Thane K.
Pratt, T. K., R. E. David, and E. H. Paxton. 2016. First Record of the common sandpiper for the Hawaiian Islands. Western Birds 47:167–169.

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Year Published: 2016

Acoustic surveys of Hawaiian Hoary Bats in Kahikinui Forest Reserve and Nakula Natural Area Reserve on the Island of Maui

The Kahikinui Forest Reserve and the adjoining Nakula Natural Area Reserve (KFR-NNAR) was established in 2011 as a conservation area on the leeward slope of Haleakalā Volcano on the island of Maui to protect unique natural features and endangered species including the Hawaiian hoary bat, Lasiurus cinereus semotus. We recorded bat vocalizations...

Todd, Christopher M.; Pinzari, Corinna A.; Bonaccorso, Frank
Todd, C. M., C. A. Pinzari, and F. J. Bonaccorso. 2016. Acoustic surveys of Hawaiian hoary bats in Kahikinui Forest Reserve and Nakula Natural Area Reserve on the island of Maui. Technical Report 78, Hawaii Cooperative Studies Unit, University of Hawaii at Hilo, Hilo, Hawaii.

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Year Published: 2016

Changes in habitat use and distribution of mouflon in the Kahuku Unit of Hawai‘i Volcanoes National Park

European mouflon sheep (Ovis gmelini musimon) were introduced to Kahuku Ranch on Hawai‘i Island in 1968 and 1974 for trophy hunting and have been detrimental to the native ecosystem by trampling, bark stripping, and browsing vegetation. In 2003, Hawai‘i Volcanoes National Park acquired Kahuku Ranch and managers began removing mouflon. The...

Palupe, Bronson; Leopold, Christina R.; Hess, Steven C.; Faford, Jonathan K.; Pacheco, Dexter; Judge, Seth W.

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Year Published: 2016

Changes in the prevalence of avian disease and mosquito vectors at Hakalau Forest National Wildlife Refuge: a 14-year perspective and assessment of future risk

Throughout the main Hawaiian Islands, introduced mosquito-borne disease has had, and continues to have, a profound impact on the distributions and abundance of native Hawaiian forest birds. Populations of remaining native forest birds are largely restricted to high elevation forests where mean temperatures are marginal for vector and parasite...

LaPointe, Dennis; Gaudioso-Levita, Jacqueline M.; Atkinson, Carter T.; Egan, Ariel N.; Hayes, Kathleen

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Year Published: 2016

Abundance, distribution, and removals of feral pigs at Big Island National Wildlife Refuge Complex 2010–2015

The Hakalau Forest Unit (HFU) of Big Island National Wildlife Refuge Complex (BINWRC) has intensively monitored non-native ungulate presence and distribution during surveys of all managed areas since 1988. In this report we: 1) provide results from recent ungulate surveys and the number of removals at HFU to determine the distribution, abundance,...

Leopold, Christina R.; Hess, Steve C.; Kendall, Steve J.; Judge, Seth W.

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Year Published: 2016

Genetic diversity of Wolbachia endosymbionts in Culex quinquefasciatus from Hawai`i, Midway Atoll, and Samoa

Incompatible insect techniques are potential methods for controlling Culex quinquefasciatus and avian disease transmission in Hawai‘i without the use of pesticides or genetically modified organisms. The approach is based on naturally occurring sperm-egg incompatibilities within the Culex pipiens complex that are controlled by different...

Atkinson, Carter T.; Watcher-Weatherwax, William; Lapointe, Dennis

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Year Published: 2016

Winter distribution and use of high elevation caves as foraging sites by the endangered Hawaiian hoary bat, Lasiurus cinereus semotus

We examine altitudinal movements involving unusual use of caves by Hawaiian hoary bats, Lasiurus cinereus semotus, during winter and spring in the Mauna Loa Forest Reserve (MLFR), Hawai‘i Island. Acoustic detection of hoary bat vocalizations, were recorded with regularity outside 13 lava tube cave entrances situated between 2,200 to 3,600 m...

Bonaccorso, Frank; Montoya-Aiona, Kristina; Pinzari, Corinna A.; Todd, Christopher M.
Bonaccorso, F.J., K.M. Montoya-Aiona, C.A. Pinzari, and C. Todd. 2016. Winter distribution and use of high elevation caves as foraging sites by the endangered Hawaiian hoary bat, Lasiurus cinereus semotus. Hawaii Cooperative Studies Unit Technical Report. TR HCSU-068. University of Hawaii at Hilo, 28 pp.

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Year Published: 2016

Effects of Climate and land use on diversity, prevalence, and seasonal transmission of avian hematozoa in American Samoa

The indigenous forest birds of American Samoa are increasingly threatened by changing patterns of rainfall and temperature that are associated with climate change as well as environmental stressors associated with agricultural and urban development, invasive species, and new introductions of avian diseases and disease vectors. Long term changes in...

Atkinson, Carter T.; Utuzurrum, Ruth B.; Seamon, Joshua O.; Schmaedick, Mark A.; Lapointe, Dennis; Apelgren, Chloe; Egan, Ariel N.; Watcher-Weatherwax, William
Atkinson, C.T., R.B. Utzurrum, J. O. Seamon, M.A. Schmaedick, D.A. LaPointe, C. Apelgren, A.N. Egan, and W. Watcher-Weatherwax. 2016. Effects of Climate and land use on diversity, prevalence, and seasonal transmission of avian hematozoa in American Samoa. Hawaii Cooperative Studies Unit Technical Report. TR HCSU-072. University of Hawaii at Hilo, 52 pp.

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Year Published: 2016

Evaluating detection and monitoring tools for incipient and relictual non-native ungulate populations

Hawai‘i Volcanoes National Park (HAVO) encompasses 1,308 km2 on Hawai‘i Island. The park harbors endemic plants and animals which are threatened by a variety of invasive species. Introduced ungulates have caused sharp declines of numerous endemic species and have converted ecosystems to novel grazing systems in many cases. Local ranchers and the...

Judge, Seth W.; Hess, Steve C.; Faford, Jonathan K.J.; Pacheco, Dexter; Leopold, Christina R.; Cole, Colleen; Deguzman, Veronica
Judge, S.W., S.C. Hess, J.K. Faford, D. Pacheco, C.R. Leopold, C. Cole, and V. DeGuzman. 2016. Evaluating Detection and Monitoring Tools for Incipient and Relictual Non-native Ungulate Populations. Hawaii Cooperative Studies Unit Technical Report HCSU-069.

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Year Published: 2016

2015-2016 Palila abundance estimates

The palila (Loxioides bailleui) population was surveyed annually during 1998−2016 on Mauna Kea Volcano to determine abundance, population trend, and spatial distribution. In the latest surveys, the 2015 population was estimated at 852−1,406 birds (point estimate: 1,116) and the 2016 population was estimated at 1,494−2,385 (point estimate: 1,934)....

Camp, Richard J.; Brinck, Kevin W.; Banko, Paul C.

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Year Published: 2016

Comparative demographics of a Hawaiian forest bird community

Estimates of demographic parameters such as survival and reproductive success are critical for guiding management efforts focused on species of conservation concern. Unfortunately, reliable demographic parameters are difficult to obtain for any species, but especially for rare or endangered species. Here we derived estimates of adult survival and...

Guillaumet, Alban; Woodworth, Bethany L.; Camp, Richard J.; Paxton, Eben H.
Guillaumet, A., B.L. Woodworth, R.J. Camp, and E.H. Paxton. 2015. Comparative demographics of a Hawaiian forest bird community. Journal of Avian Biology, 46: 1-12.

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Year Published: 2016

Evaluating abundance and trends in a Hawaiian avian community using state-space analysis

Estimating population abundances and patterns of change over time are important in both ecology and conservation. Trend assessment typically entails fitting a regression to a time series of abundances to estimate population trajectory. However, changes in abundance estimates from year-to-year across time are due to both true variation in...

Camp, Richard J.; Brinck, Kevin W.; Gorresen, P.M.; Paxton, Eben H.
Camp, R.J, K.W. Brinck, P.M. Gorresen, E.H. Paxton. 2015. Evaluating abundance and trends in a Hawaiian avian community using state-space analysis. Bird Conservation International, 1:1-18.

Our scientists in the Northwest Region conduct impartial, multi- and interdisciplinary research and monitoring on a large range of natural-resource issues that impact the quality of life of citizens of the Northwest states of Idaho, Montana, Oregon, Washington, and Wyoming.

Filter Total Items: 301
February 18, 2016

Westslope cutthroat trout and bull trout in the North Fork of the Flathead River, Montana.

Westslope cutthroat trout and bull trout in the North Fork of the Flathead River, Montana.

February 18, 2016

Getting the Shot

USGS scientist shoots a repeat photograph of Grinnell Glacier in Glacier National Park to illustrate glacial recession due to impacts of climate change.

February 17, 2016

Top of the world.

USGS scientist Greg Pederson and field collaborator set up a repeat photograph in Glacier National Park.  

USGS hydrologic technician collecting streamflow data
January 4, 2016

USGS hydrologic technician collecting streamflow data

USGS hydrologic technician Deena Green collects streamflow data at streamgage station 12413875, St. Joe River at Red Ives Ranger Station, Idaho

USGS hydrologic technician collecting groundwater level data
December 31, 2015

USGS hydrologic technician collecting groundwater level data

USGS hydrologic technician Jayson Blom collects a groundwater-level measurement from an aquifer monitoring well at the Idaho National Laboratory.

USGS staff dig snowpits to evaluate the snow structure after a wet snow avalanche cycle.
December 31, 2015

USGS staff dig snowpits to evaluate the snow structure.

USGS staff dig snowpits to evaluate the snow structure after a wet snow avalanche cycle. This helps identify weak layers responsible for wet slab avalanches along the Going-to-the-Sun Road in Glacier National Park.

Bridge and water gage house at the Coast Fork Willamette River at State Highway 58
December 18, 2015

Coast Fork Willamette River and Gage House

Coast Fork Willamette River and gage house at State Highway 58 near Goshen, Oregon, above flood stage on December 18, 2015.

December 9, 2015

Lightning Creek at Clark Fork, Idaho: December 9, 2015

On December 9, 2015, heavy rain and resulting snowmelt swelled many Pacific Northwest rivers to flood stage. One of these streams was Lightning Creek at Clark Fork, Idaho. In a 24-hour period, Lightning Creek rose from about 200 cubic feet per second (cfs) to more than 10,000 cfs as recorded at USGS strreamgage 12392155.
 

USGS Streamgage on the Williamson River
November 21, 2015

USGS Streamgage on the Williamson River

A U.S. Geological Survey hydrologist collects a water sample from the Williamson River below Chiloquin, Oregon. The sample was analyzed as part of a water-quality study the USGS conducted in cooperation with the U.S. Bureau of Reclamation and the Klamath Tribes.

A USGS hydrologist collects a water sample
October 14, 2015

A U.S. Geological Survey hydrologist collects a water sample

After receiving permission from the homeowner, a U.S. Geological Survey hydrologist collects a water sample from a residential well in Emmett, Idaho. The sample was analyzed as part of a water-quality study the USGS conducted in cooperation with Gem County, Idaho and the Idaho Department of Environmental Quality.

Old Montana Farmhouse
September 30, 2015

Old Montana Farmhouse

  • Contrary to popular belief, Lorem Ipsum is not simply random text. It has roots in a piece of classical Latin literature from 45 BC, making it over 2000 years old. Richard McClintock, a Latin professor at Hampden-Sydney College in Virginia, looked up one of the more obscure Latin words, consectetur,
...
Sampling for alpine insects above the stream in Glacier National Park.
September 21, 2015

Sampling for alpine insects above the stream in Glacier National Park.

A scientist is working to collect alpine insects by picking through moss below tiny, cold, alpine streams. This spot was below a small seep on a slope above a tributary to the Dry Fork, North of the Two Medicine area in Glacier National Park. 

Our scientists in the Northwest Region conduct impartial, multi- and interdisciplinary research and monitoring on a large range of natural-resource issues that impact the quality of life of citizens of the Northwest states of Idaho, Montana, Oregon, Washington, and Wyoming.

Filter Total Items: 79
Image: Vog from Kilauea
February 11, 2015

A new study to examine how people who live downwind of Kīlauea Volcano cope with volcanic gas emissions, or vog, is currently underway.

USGS
December 18, 2014

Secretary of the Interior Sally Jewell announced today that Interior’s Northwest Climate Science Center is awarding more than one million dollars to universities and other partners for research to guide managers of parks, refuges and other cultural and natural resources in planning how to help species and ecosystems adapt to climate change.

Historical photo of a flood on Willamette River in Oregon from 1964
December 11, 2014

The Christmas flood of 1964 encompassed about 200,000 square miles, or roughly the size of France, resulted in 47 deaths, left thousands homeless and caused more than $540 million ($3.9 billion today) worth of damage.

Image: USGS Scientist Researching  Bakken Formation Water Samples
November 17, 2014

Energy development in the Williston Basin oil production area of Montana and North Dakota, which includes the Bakken and Three Forks Formations, has not affected shallow groundwater quality, according to a recently published study in the journalGroundwater.

Image: Low-level Helicopter Towing a Large Wire-Loop Contraption Hanging from a Cable
October 28, 2014

Citizens should not be alarmed if they see a low-flying helicopter towing a large wire-loop contraption hanging from a cable in the Poplar, Montana area during the next couple of weeks.

USGS science for a changing world logo
February 24, 2014

An increase in the barred owl population is contributing to the decline of threatened Northern spotted owls, according to models developed by U.S. Geological Survey and U.S. Forest Service scientists.

USGS science for a changing world logo
August 13, 2009

Residents and critical infrastructure in the nation's six highest-risk volcanic areas—including the Northwest region of the United States-- will benefit from increased monitoring and analysis as a result of Recovery Act funds being channeled into volcano monitoring, Secretary Salazar announced today.

Our scientists in the Northwest Region conduct impartial, multi- and interdisciplinary research and monitoring on a large range of natural-resource issues that impact the quality of life of citizens of the Northwest states of Idaho, Montana, Oregon, Washington, and Wyoming.