Mission Areas

Ecosystems

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Filter Total Items: 496
Fifty-one high priority watersheds known as Strategic Habitat Units (SHU) have been identified in Alabama
Date Published: March 17, 2016
Status: Active

Alabama is host to a variety of freshwater species, many of which are critically imperiled. USGS and partners focus conservation activities in high priority watersheds throughout the state.

Burmese Python are difficult to detect
Date Published: March 17, 2016

Current tools for detection of Burmese pythons in South Florida have resulted in low detection rates. Environmental DNA - eDNA - has shown to be effective at detecting these invasive snakes, and can help to determine range limits for the species, information that is critical for management and control efforts. 

Researchers monitoring coastal wetland sediment elevations along the Indian River Lagoon
Date Published: March 16, 2016

To better understand coastal response to sea-level rise, USGS is monitoring coastal wetland sediment elevations along Florida's east coast.

Contacts: Gordon Anderson
A wolf at the Grizzly and Wolf Discovery Center in Montana as shown in thermal imagery.
Date Published: March 15, 2016
Status: Completed

Researchers at NOROCK and their partners used thermal cameras at the Grizzly and Wolf Discovery Center in Montana to assess the amount of heat lost under a range of environmental conditions with and without hair. These methods help scientists better understand how mange operates in wild wolves throughout the Greater...

Contacts: Paul Cross, Emily Almberg, Doug Smith, Adam Munn, Peter Hudson, John Heine, Dan Stahler, Shane Maloney
Capturing juvenile bull trout by electroshocking Logging Creek and then transporting them to another lake upstream.
Date Published: March 10, 2016

There is an urgent need to consider more aggressive and direct interventions for conservation of freshwater fishes threatened by invasive species, habitat loss, and climate change. Conservation introduction - moving species to areas outside their previous range, where conditions are predicted to be more suitable - is one type of translocation strategy that fisheries managers can use to...

Detritus sampling from coral reef - WARC
Date Published: March 10, 2016
Status: Active

Coral reefs around the world are exposed to a number of environmental contaminants. USGS researchers investigate the issue of contamination on the reefs around the U.S. Virgin Islands.

Examples of Snake Fungal Disease (SFD)
Date Published: March 1, 2016

In the last twenty years, an extraordinary number of fungal and fungal-like diseases have caused some of the most severe die-offs and extinctions ever observed in wild species.

Contacts: Hardin Waddle, Ph.D., Brad M Glorioso, Dr. Jeffrey M. Lorch
USGS science for a changing world logo
Date Published: March 1, 2016

We fund complex, often multi-year, research efforts on priority topics (themes) identified by the National Park Service (NPS) Inventory and Monitoring Program. Our efforts complement the Natural Resources Preservation Project (NRPP), which focuses on funding short-term, tactical research to meet natural resource management needs identified by NPS.

Attribution: Ecosystems
USGS science for a changing world logo
Date Published: February 29, 2016

We facilitate public understanding of science and environmental change to build support for science and proactive adaptation to environmental change.

Attribution: Ecosystems
USGS science for a changing world logo
Date Published: February 29, 2016

Researchers sample water, soil or air to look for presence of Environmental DNA (eDNA), genetic material shed from living or once live organisms whose presence is difficult to detect under traditional sampling methods.

Attribution: Ecosystems
USGS science for a changing world logo
Date Published: February 29, 2016

The Adaptive Management process offers a unique mix of management and science to "learn from doing" and decrease uncertainty over time.

USGS science for a changing world logo
Date Published: February 29, 2016

Researchers apply the tools and concepts of genetics to the conservation of biological resources.

Attribution: Ecosystems
Filter Total Items: 566
Year Published: 2010

Long-term persistence of spent lead shot in tundra wetlands

We seeded experimental plots with number 4 lead pellets and sampled these plots for 10 years to assess the settlement rate of pellets in tundra wetland types commonly used by foraging waterfowl. After 10 years, about 10% of pellets remained within 6 cm of the surface, but >50% remained within 10 cm. We predict that spent lead pellets will...

Flint, Paul L.; Schamber, Jason L.
Long-term persistence of spent lead shot in tundra wetlands; 2010; Article; Journal; The Journal of Wildlife Management; Flint, Paul L.; Schamber, Jason L.

Year Published: 2010

Divergent movements of walrus and sea ice in the Nothern Bering Sea

The Pacific walrus Odobenus rosmarus divergens is a large Arctic pinniped of the Chukchi and Bering Seas. Reductions of sea ice projected to occur in the Arctic by mid-century raise concerns for conservation of the Pacific walrus. To understand the significance of sea ice loss to the viability of walruses, it would be useful to better understand...

Jay, Chadwick V.; Udevitz, Mark S.; Kwok, Ron; Fischbach, Anthony S.; Douglas, David C.
Divergent movements of walrus and sea ice in the Nothern Bering Sea; 2010; Article; Journal; Marine Ecology Progress Series; Jay, Chadwick V.; Udevitz, Mark S.; Kwok, Ron; Fischbach, Anthony S.; Douglas, David C.

Year Published: 2010

GPS tracking devices reveal foraging strategies of black-legged kittiwakes

The Black-legged Kittiwake Rissa tridactyla is the most abundant gull species in the world, but some populations have declined in recent years, apparently due to food shortage. Kittiwakes are surface feeders and thus can compensate for low food availability only by increasing their foraging range and/or devoting more time to foraging. The species...

Kotzerka, Jana; Garthe, Stefan; Hatch, Scott A.
GPS tracking devices reveal foraging strategies of black-legged kittiwakes; 2010; Article; Journal; Journal of Ornithology; Kotzerka, Jana ; Garthe, Stefan ; Hatch, Scott A.

Year Published: 2010

Catalogue of polar bear (Ursus maritimus) maternal den locations in the Beaufort Sea and neighboring regions, Alaska, 1910-2010

This report presents data on the approximate locations and methods of discovery of 392 polar bear (Ursus maritimus) maternal dens found in the Beaufort Sea and neighboring regions between 1910 and 2010 that are archived by the U.S. Geological Survey, Alaska Science Center, Anchorage, Alaska. A description of data collection methods, biases...

Durner, George M.; Fischbach, Anthony S.; Amstrup, Steven C.; Douglas, David C.
Catalogue of polar bear (Ursus maritimus) maternal den locations in the Beaufort Sea and neighboring regions, Alaska, 1910-2010; 2010; DS; 568; Durner, George M.; Fischbach, Anthony S.; Amstrup, Steven C.; Douglas, David C.

Year Published: 2010

Epizootic of beak deformities among wild birds in Alaska: An emerging disease in North America?

The sudden appearance of a large cluster of animals with gross abnormalities may signal a significant change in an ecosystem. We describe an unusual concentration of beak deformities that appear to have arisen rapidly within Alaska and now extend southward along the Pacific Coast. In Alaska we have documented 2,160 Black-capped Chickadees (Poecile...

Handel, Colleen M.; Pajot, Lisa M.; Matsuoka, Steven M.; Van Hemert, Caroline; Terenzi, John; Talbot, Sandra L.; Mulcahy, Daniel M.; Meteyer, Carol U.; Trust, Kimberly A.
Epizootic of beak deformities among wild birds in Alaska: an emerging disease in North America?; 2010; Article; Journal; The Auk; Handel, Colleen M.; Pajot, Lisa M.; Matsuoka, Steven M.; Van Hemert, Caroline; Terenzi, John; Talbot, Sandra L.; Mulcahy, Daniel M.; Meteyer, Carol U.; Trust, Kimberly A.

Year Published: 2010

Effectiveness of Wildlife Underpasses and Fencing to Reduce Wildlife–Vehicle Collisions

Transportation planners are increasingly incorporating roadway design features to mitigate impacts of highways on wildlife and to increase driver safety. We used camera and track surveys to evaluate wildlife use before and after construction of 3 wildlife underpasses and associated fencing on a new section of United States Highway 64 in Washington...

McCollister, Matthew F.
Effectiveness of Wildlife Underpasses and Fencing to Reduce Wildlife–Vehicle Collisions; 2010; Article; Journal; Journal of Wildlife Management; Frank Van Manen; McCollister, Matthew F.

Year Published: 2010

Reproductive Ecology and Habitat Use of Pacific Black Scoters (Melanitta nigra americana) Nesting on the Yukon-Kuskokwim Delta, Alaska

Abundance indices of Black Scoters (Melanitta nigra. americana) breeding in Alaska indicate a long-term population decline without obvious cause (s). However, few life history data are available for the species in North America. In 2001–2004, information was collected on nesting habitat and reproductive parameters (i.e. components of productivity...

Schamber, Jason L.
Reproductive Ecology and Habitat Use of Pacific Black Scoters (Melanitta nigra americana) Nesting on the Yukon-Kuskokwim Delta, Alaska; 2010; Article; Journal; Waterbirds; Jason L Schamber

Year Published: 2010

Development of monitoring protocols to detect change in rocky intertidal communities of Glacier Bay National Park and Preserve

Glacier Bay National Park and Preserve in southeastern Alaska includes extensive coastlines representing a major proportion of all coastlines held by the National Park Service. The marine plants and invertebrates that occupy intertidal shores form highly productive communities that are ecologically important to a number of vertebrate and...

Irvine, Gail V.
Development of monitoring protocols to detect change in rocky intertidal communities of Glacier Bay National Park and Preserve; 2010; OFR; 2010-1283; Irvine, Gail V.

Year Published: 2010

Framework for ecological monitoring on lands of Alaska National Wildlife Refuges and their partners

National Wildlife Refuges in Alaska and throughout the U.S. have begun developing a spatially comprehensive monitoring program to inform management decisions, and to provide data to broader research projects. In an era of unprecedented rates of climate change, monitoring is essential to detecting, understanding, communicating and mitigating...

Woodward, Andrea; Beever, Erik A.
Framework for ecological monitoring on lands of Alaska National Wildlife Refuges and their partners, Anchorage, Alaska; 2010; OFR; 2010-1300; Add Authors from IPDS Emails

Year Published: 2010

Seasonal meso- and microhabitat selection by the northern snakehead (Channa argus) in the Potomac river system

 The northern snakehead (Channa argus) is a large piscivorous fish that is invasive in eastern Europe and has recently been introduced in North America. We examined the seasonal habitat selection at meso- and microhabitat scales using radio-telemetry to increase understanding of the ecology of this species, which will help to inform...

Lapointe, N.W.R.; Thorson, J.T.; Angermeier, P.L.

Year Published: 2010

U.S. Geological Survey (USGS), Western Region: Coastal ecosystem responses to influences from land and sea, Coastal and Ocean Science

Sea otters and the nearshore ecosystems they inhabit-from highly urbanized California to relatively pristine Alaska-are the focus of a new multidisciplinary study by scientists with the U.S. Geological Survey (USGS) and a suite of international, academic and government collaborators. The Coastal Ecosystem Responses to Influences from Land and Sea...

Bodkin, James L.
U.S. Geological Survey (USGS), Western Region: Coastal ecosystem responses to influences from land and sea, Coastal and Ocean Science; 2010; FS; 2010-3099; Bodkin, James L.

Year Published: 2010

Individual growth and reproductive behavior in a newly established population of northern snakehead (Channa argus), Potomac River, USA

Northern snakehead (Channa argus) were first found in the Potomac River in 2004. In 2007, we documented feeding and reproductive behavior to better understand how this species is performing in this novel environment. From April to October, we used electrofishing surveys to collect data on growth, condition, and gonad weight of adult fish. Growth...

Landis, Andrew M. Gascho; Lapointe, Nicolas W. R.; Angermeier, Paul L.

Filter Total Items: 500
August 18, 2011
Permanent Control Site: GP2 West Transect; Depth: 13.1 Meters (43 Feet); Distance from river mouth: 18.8 Kilometers (11.6 Miles) east; Pre/Post Dam Removal: 1 month pre-dam removal; Lat/Long: 48.12781102,-123.31645664; Site Description: This site was established as the eastern control. Substrate is mainly a gravel/sand/cobble mixture surrounding boulders (1:05 seconds). Red, green and brown...
August 8, 2011
Permanent Site: C1 West Transect; Depth: Meters (Feet); Distance from river mouth: 0.7 Kilometers (0.4 Miles); Pre/Post Dam Removal: 1 month pre-dam removal; Lat/Long: 48.14525225,-123.57361291; Site Description: Substrate is clean sand with scatterings of gravel. Patches of brown seaweed, mainly Alaria marginata (0:19 seconds) and Saccharina spp., and red algae (0:13 seconds) are present...
August 8, 2011
Permanent Site: H1 East Transect; Depth: 5.5 Meters (Feet 18.0); Distance from river mouth: 2.4 Kilometers (1.5 Miles) east; Pre/Post Dam Removal: 1 month pre-dam removal; Lat/Long: 48.1479177,-123.53472865; Site Description: This is a shallow site and one of the farthest removed from the effects of the sediment plume outside of the control sites. Substrate is mainly gravel with some sand and...
August 7, 2011
Permanent Site: F1 West Transect; Depth: 6.7 Meters (22 Feet); Distance from river mouth: 1.3 Kilometers (0.8 Miles) east; Pre/Post Dam Removal: 1 month pre-dam removal; Lat/Long: 48.15292999, -123.55078602; Site Description: This is a shallow site with gravel substrate. Algae is abundant, especially three-ribbed kelp Cymathere triplicate (0:17, 0:34 seconds), Alaria marginata (0:05, 0:44 seconds...
August 7, 2011
Permanent Site: E2 West Transect; Depth: 14.8 Meters (48.7 Feet); Distance from river mouth: 0.9 Kilometers (0.5 Miles) east; Pre/Post Dam Removal: 1 month pre-dam removal; Lat/Long: 48.15653002, -123.56197605; Site Description: This is one of our deeper sites. Substrate is mainly gravel/cobble with scattered boulders (0:25, 0:34, 0:43seconds). Seaweed is abundant, especially acid kelp...
August 7, 2011
Permanent Site: C1 East Transect; Depth: 9.6 Meters (Feet 31.4); Distance from river mouth: 0.7 Kilometers (0.4 Miles); Pre/Post Dam Removal: 1 month pre-dam removal; Lat/Long: 48.14525225,-123.57294101; Site Description: Substrate is clean sand with minimal gravel. Algae is absent on first third of transect. Patches of brown seaweed, mainly Alaria marginata (0:43 seconds) and Saccharina spp. (1:...
August 7, 2011
Permanent Site: F2 East Transect; Depth: 11.7 Meters (38.3 Feet); Distance from river mouth: 1.5 Kilometers (0.9 Miles) east; Pre/Post Dam Removal: 1 month pre-dam removal; Lat/Long: 48.15672004,-123.54969397; Site Description: Substrate is mainly gravel mixed with a little cobble and an occasional boulder. Red (0:50, 1:15 seconds) and brown seaweeds are very abundant, including bull kelp...
August 7, 2011
Permanent Site: F1 East Transect; Depth: 6.2 Meters (20.4 Feet); Distance from river mouth: 1.3 Kilometers (0.8 Miles) east; Pre/Post Dam Removal: 1 month pre-dam removal; Lat/Long: 48.15292999, -123.55011402; Site Description: Video is blurry and of poor quality. This is a shallow site with gravel substrate. Algae is abundant, especially three-ribbed kelp Cymathere triplicate (0:09, 0:37 seconds...
August 6, 2011
Permanent Site: F2 West Transect; Depth: 11.9 Meters (38.9 Feet); Distance from river mouth: 1.5 Kilometers (0.9 Miles) east; Pre/Post Dam Removal: 1 month pre-dam removal; Lat/Long: 48.15672004,-123.55036603; Site Description: Substrate is mainly gravel mixed with a little cobble and an occasional boulder. Red (0:47 seconds) and brown seaweeds are very abundant, including bull kelp Nereocystis...
August 6, 2011
Permanent Site: H2 East Transect; Depth: 7.9 Meters (25.8 Feet); Distance from river mouth: 2.6 Kilometers (1.6 Miles) east; Pre/Post Dam Removal: 1 month pre-dam removal; Lat/Long: 48.15008216,-123.53210661; Site Description: This site is medium to shallow depth. Substrate is mainly gravel with some sand, cobble and an occasional boulder (1:38 seconds). Seaweed is dense, particularly reds (1:29...
August 6, 2011
Permanent Site: A1 East Transect; Depth: 8.2 Meters (27.0 Feet); Distance from river mouth: 1.8 Kilometers (1.1 Miles) West; Pre/Post Dam Removal: 1 month pre-dam removal; Lat/Long: 48.13870775, -123.5855312; Site Description: Transect is in eastern part of Freshwater Bay. Sediment is primarily sand/sandy mud with an occasional boulder. Both annual and perennial seaweeds are present. Eelgrass (...
August 6, 2011
Permanent Site: A1 West Transect; Depth: 8.2 Meters (27.0 Feet); Distance from river mouth: 1.9 Kilometers (1.2 Miles) West; Pre/Post Dam Removal: 1 month pre-dam removal; Lat/Long: 48.13870775, -123.586203; Site Description: Transect is in eastern part of Freshwater Bay. Sediment is primarily sand/sandy mud with patches of boulders. Annual and perennial seaweeds are present, including bull kelp...