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Ecosystems

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The Ecosystems Mission Area provides impartial science information and tools to the Nation’s natural resource managers, with particular focus on the science needs of the Department of the Interior (DOI) and DOI bureaus to manage species, lands and priority ecosystems; fulfill treaty obligations; respond to and reduce threats to natural resources; and manage mineral and energy resources.

 

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Filter Total Items: 742
Date published: March 22, 2016

Hierarchical Models for Computing Inferences About Species Assemblages Subject to Imperfect Detection

USGS is developing strategies to model species assemblages to allow inferences to be made about individual species, local communities of species, or for an entire metacommunity of species - while accounting for errors in species detection during sampling.

Date published: March 22, 2016
Status: Active

Connectivity of Tropical Marine Ecosystems: Understanding Biodiversity and Trophic Relationships in the Virgin Islands and Puerto Rico

Marine reserves and protected areas in the U.S. Virgin Islands and Puerto Rico encompass a variety of tropical ecosystems, including coral reefs, mangroves, and seagrass beds, but questions remain regarding how effective these areas are at preserving and protecting the habitats and species they encompass. USGS and collaborators address this question by examining the biodiversity and food web...

Date published: March 22, 2016
Status: Completed

Assessing the Past and Potential Future Impacts of Salt Water Intrusion on Tidal Swamp Habitat along the South Atlantic Coast

Using historical aerial photogrammetry, satellite imagery, or recent vegetation mapping efforts, as well as various models, USGS investigates salt water intrusion impacts on coastal habitats along the southern Atlantic coast. 

Date published: March 18, 2016

Green-Tree Reservoir management practices within the U.S. Fish and Wildlife Service National Wildlife Refuge System

Green-Tree Reservoirs are used as a management tool by National Wildlife Refuges throughout the Southeast United States, but data suggests that forest productivity has declined in these areas. USGS investigates the effects of climate and flooding on tree growth and mortality to assist refuge managers adapt management strategies. 

Contacts: Richard Day
Date published: March 18, 2016

Establishing Explicit Biological Objectives to Guide Strategic Habitat Conservation for the Gulf Coast

To inform conservation efforts for the Gulf Coast, USGS is developing a suite of decision support tools to provide explicit population and habitat objectives.

Date published: March 18, 2016

Response of a Threatened Shorebird to Severe Storms

The federally protected Atlantic Coast Piping Plover relies on habitats that were affected by Hurricane Sandy. USGS works to understand how these changes have affected nesting habitat and the reproductive success of the shorebird.

Date published: March 18, 2016
Status: Active

An Inventory and Comparative Study of Bees, A Keystone Ecological Group in the Endangered Coastal Prairie of Louisiana

Much of Louisiana's coastal prairie has been converted to rice and sugarcane cultivation. USGS is inventorying bee populations in these areas to explore how effective restoration efforts have been.

Contacts: Larry Allain
Date published: March 18, 2016
Status: Active

Population Monitoring of the Federally Threatened Okaloosa Darter at Eglin Air Force Base

USGS' and Loyola University New Orleans' innovative research techniques played a role in the decision to downlist the Okaloosa Darter, a freshwater fish endemic to northwest Florida, from Endangered to Threatened.

Contacts: Howard Jelks
Date published: March 18, 2016

Long-Term Carbon Burial in Marshes of the Mississippi River Delta

Wetlands along the Gulf of Mexico coast play an important role in the global carbon cycle, but as they  rapidly convert to open water, their potential for carbon storage is declining. USGS is working to provide accurate, long-term marsh soil carbon sequestration rates. 

Date published: March 18, 2016
Status: Active

Classifying Coastal Wetland Vegetation Communities with Unsupervised Artificial Neural Networks

Wetlands are often classified by their vegetation, which can help scientists track how these landscapes change over time. USGS turns to unsupervised artificial neural networks to help guide this classification process.

Date published: March 18, 2016

An investigation of aquatic invasive species in pristine sites in the Greater Yellowstone Area

Aquatic invasive species (AIS) are aquatic organisms that move into ecosystems beyond their natural, historic range and cause severe and irreversible damage to the habitats they invade. Most AIS arrive as a direct result of human activity, such as boating and angling. The threat of AIS introduction is especially high in the Greater Yellowstone Area, as humans from all over the world come to...

Contacts: Adam Sepulveda
Date published: March 18, 2016

Potential Impact of Hydrology and Sedimentation Changes to Biodiversity, Dongting Lake, China

Dongting Lake, one of the wetlands that make up the floodplains of China's Yangtze River, is important habitat for migratory waterfowl and other wildlife. However, the re-engineering of the water way and the intensification of agricultural practices has contributed to changes in hydrology and sedimentation. USGS and partners from China are assessing the potential impact of these changes to the...

Filter Total Items: 4,619
Year Published: 2016

Paramyxoviruses of fish: Chapter 17

The first fish paramyxovirus was isolated from normal adult Chinook salmon returning to a coastal hatchery in Oregon in the fall of 1982. Subsequently, the virus was isolated from other stocks of adult Chinook salmon and one stock of adult coho salmon in California, Oregon, Washington and Alaska, leading to its designation as the Pacific salmon...

Kibenge, Frederick S. B.; Godoy, Marcos; Meyers, Theodore R.; Batts, William N.
Meyers, T.R. and W.N. Batts. 2016. Paramyxoviruses of Fish, Chapter 17 in Kibenge, F.S.B. and M.G. Godoy, eds., Aquaculture Virology. Elsevier Inc., p. 259-265. ISBN: B978-0-12-801573-5

Year Published: 2016

Future frequencies of extreme weather events in the National Wildlife Refuges of the conterminous U.S.

Climate change is a major challenge for managers of protected areas world-wide, and managers need information about future climate conditions within protected areas. Prior studies of climate change effects in protected areas have largely focused on average climatic conditions. However, extreme weather may have stronger effects on wildlife...

Martinuzzi, Sebastian; Allstadt, Andrew J.; Bateman, Brooke L.; Heglund, Patricia J.; Pidgeon, Anna M.; Thogmartin, Wayne E.; Vavrus, Stephen J.; Radeloff, Volker C.
Martinuzzi, S., A.J. Allstadt, B.L. Bateman, P.J. Heglund, A.M. Pidgeon, W.E. Thogmartin, S.J. Vavrus, V.C. Radeloff. 2016. Future frequencies of extreme weather events in the National Wildlife Refuges of the conterminous U.S. Biological Conservation. Vol. 201:327-335. ISSN:0006-3207. DOI:10.1016/j.biocon.2016.07.007.

Year Published: 2016

Does resolution of flow field observation influence apparent habitat use and energy expenditure in juvenile coho salmon?

This study investigated how the resolution of observation influences interpretation of how fish, juvenile Coho Salmon (Oncorhynchus kisutch), exploit the hydraulic environment in streams. Our objectives were to evaluate how spatial resolution of the flow field observation influenced: (1) the velocities considered to be representative of habitat...

Tullos, Desiree D.; Walter, Cara; Dunham, Jason B.

Year Published: 2016

Effects of spray-dried Pseudomonas fluorescens, strain CL145A (Zequanox®) on reproduction and early development of the fathead minnow (Pimephales promelas).

The biopesticide, Zequanox®, is registered for dreissenid mussel control in open water systems. Previous toxicity trials with nontarget organisms, including young-of-the year of several fish species and invertebrates, demonstrated selectivity of Zequanox for dreissenids. However, data are lacking on its safety to reproductive and early life stages...

Waller, Diane L.; Luoma, James A.
Waller, D.L. and Luoma, J.A. 2016. Effects Of Spray-Dried Pseudomonas fluorescens, Strain CL145A (Zequanox®) On Reproduction And Early Development of the Fathead Minnow (Pimephales promelas). Legislative-Citizen Commission on Minnesota Resources. August 15, 2016. 15 p.

Year Published: 2016

The Mississippi River: A place for fish

The Mississippi River flows 3,734 km from its source at Lake Itasca, Minnesota to its outlet at the Gulf of Mexico. Along its course, it collects water from portions of two Canadian provinces and 41 % of the conterminous United States. Although greatly altered for navigation and flood control throughout much of its length, the Mississippi River...

Chen, Yushun; Chapman, Duane C.; Jackson, John; Chen, Daqing; Li, Zhongjie; Kilgore, Jack; Phelps, Quinton E.; Eggleton, Michael; Schramm, Harold; Ickes, Brian
Schramm, H.L., Ickes, B.S. 2016. The Mississippi River: A Place for Fish. Pp. 3-34. In: Chen, Y., Chapman, D., Jackson, J., Chen, D., Zhongjie, L., Killgore, J., Phelps, Q., Eggleton, M. eds. 2016. Fishery Resources, Environment, and Conservation in the Mississippi and Yangtze (Changjiang) River Basins. American Fisheries Society Symposium 84. ISBN-13: 978-1-934874-44-8.

Year Published: 2016

Using the North American Breeding Bird Survey to assess broad-scale response of the continent's most imperiled avian community, grassland birds, to weather variability

Avian populations can respond dramatically to extreme weather such as droughts and heat waves, yet patterns of response to weather at broad scales remain largely unknown. Our goal was to evaluate annual variation in abundance of 14 grassland bird species breeding in the northern mixed-grass prairie in relation to annual variation in precipitation...

Gorzo, Jessica; Pidgeon, Anna M.; Thogmartin, Wayne E.; Allstadt, Andrew J.; Radeloff, Volker C.; Heglund, Patricia J.; Vavrus, Stephen J.
Gorzo, J.M., Pidgeon, A.M., Thogmartin, W.E., Allstadt, A.J., Radeloff, V.C., Heglund, P.J., Vavrus, S.J. 2016. Using the North American Breeding Bird Survey to assess broad-scale response of the continent's most imperiled avian community, grassland birds, to weather variability. The Condor. Vol. 118(3):502-512. DOI: 10.1650/CONDOR-15-180.1.

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.

Year Published: 2016

Evaluating the effectiveness of wildlife detection and observation technologies at a solar power tower facility

Solar power towers produce electrical energy from sunlight at an industrial scale. Little is known about the effects of this technology on flying animals and few methods exist for automatically detecting or observing wildlife at solar towers and other tall anthropogenic structures. Smoking objects are sometimes observed co-occurring with reflected...

Diehl, Robert H.; Valdez, Ernest W.; Preston, Todd M.; Wellik, Mike J.; Cryan, Paul
Diehl RH, Valdez EW, Preston TM, Wellik MJ, Cryan PM (2016) Evaluating the effectiveness of wildlife detection and observation technologies at a solar power tower facility. PLoS ONE 11(7): e0158115. doi:10.1371/journal.pone.0158115

Year Published: 2016

Identifying key climate and environmental factors affecting rates of post-fire big sagebrush (Artemisia tridentata) recovery in the northern Columbia Basin, USA

Sagebrush steppe of North America is considered highly imperilled, in part owing to increased fire frequency. Sagebrush ecosystems support numerous species, and it is important to understand those factors that affect rates of post-fire sagebrush recovery. We explored recovery of Wyoming big sagebrush (Artemisia tridentata ssp.wyomingensis)...

Shinneman, Douglas; McIlroy, Susan
Shinneman, D.J., McIlroy, S.K., 2016, Identifying key climate and environmental factors affecting rates of post-fire big sagebrush (Artemisia tridentata) recovery in the northern Columbia Basin, USA: International Journal of Wildland Fire, p. online.

Year Published: 2016

Relative distribution and abundance of fishes and crayfish in 2010 and 2014 prior to saltcedar (Tamarix ssp.) removal in the Amargosa River Canyon, southeastern California

The Amargosa River Canyon, located in the Mojave Desert of southeastern California, contains the longest perennial reach of the Amargosa River. Because of its diverse flora and fauna, it has been designated as an Area of Critical Environmental Concern and a Wild and Scenic River by the Bureau of Land Management. A survey of fishes conducted in...

Hereford, Mark E.
Hereford, M.E., 2016, Relative distribution and abundance of fishes and crayfish in 2010 and 2014 prior to saltcedar (Tamarix ssp.) removal in the Amargosa River Canyon, southeastern California: U.S. Geological Survey Open-File Report 2016–1112, 18 p., http://dx.doi.org/10.3133/ofr20161112.

Year Published: 2016

Concentrations and spatial patterns of organic contaminants in tree swallow (Tachycineta bicolor) eggs at United States and binational Great Lakes Areas of Concern, 2010–2015

Tree swallows, Tachycineta bicolor, were sampled across the Great Lakes basin in 2010 through 2015 to provide a system-wide assessment of current exposure to organic contaminants. The results provide information identified as critical by regulators to assess the “bird or animal deformity or reproductive problems” beneficial use...

Custer, Christine M.; Custer, Thomas W.; Dummer, Paul; Goldberg, Diana R.; Franson, J. Christian

Year Published: 2016

Identification of the major capsid protein of erythrocytic necrosis virus (ENV) and development of quantitative real-time PCR assays for quantification of ENV DNA

Viral erythrocytic necrosis (VEN) is a disease of marine and anadromous fish that is caused by the erythrocytic necrosis virus (ENV), which was recently identified as a novel member of family Iridoviridae by next-generation sequencing. Phylogenetic analysis of the ENV DNA polymerase grouped ENV with other erythrocytic iridoviruses from...

Purcell, Maureen K.; Pearman-Gillman, Schuyler; Thompson, Rachel L.; Gregg, Jacob L.; Hart, Lucas M.; Winton, James R.; Emmenegger, Eveline J.; Hershberger, Paul K.
Purcell, M.K., S. Pearman-Gillman, R.L. Thompson, J.L. Gregg, L.M. Hart, J.R. Winton, E.J. Emmenegger, and P.K. Hershberger. 2016. Identification of the major capsid protein of erythrocytic necrosis virus (ENV) and development of quantitative real-time PCR assays for quantification of ENV DNA. J. Vet. Diagn. Invest. (Online First).

Filter Total Items: 689
Sagebrush in central Idaho
June 15, 2006

Sagebrush in central Idaho

Sagebrush in central Idaho.

Big sagebrush near Parawon, UT
June 5, 2006

Big sagebrush near Parawon, UT

Big sagebrush near Parawon, UT.

Image: Radio Marked Sage-grouse Hen
April 18, 2006

Radio Marked Sage-grouse Hen

A sage-grouse hen ready for release after being radio-marked and having an identification band placed on her left leg.

Attribution: Ecosystems
Image: Brewer's Sparrow in Hand
March 4, 2006

Brewer's Sparrow in Hand

Brewer's sparrow (Spizella breweri) held by field technician.

Image: Brewer's Sparrow Being Held for Assessment
February 26, 2006

Brewer's Sparrow Being Held for Assessment

John Warzybok records data whille Caroline Poli secures a Brewer's sparrow (Spizella breweri) for assessment, White Sands Missile Range, New Mexico.

Image: Measurement of Brewer's Sparrow
February 26, 2006

Measurement of Brewer's Sparrow

Brewer's sparrow (Spizella breweri) being measured, White Sands Missile Range, New Mexico.

Image: Brewer's Sparrows Being Assessed
February 26, 2006

Brewer's Sparrows Being Assessed

Caroline Poli and John Warzybok assess Brewer's sparrows (Spizella breweri) at White Sands Missile Range, New Mexico.

Image: Brewer's Sparrow Being Weighed
February 26, 2006

Brewer's Sparrow Being Weighed

Brewer's sparrow (Spizella breweri) being weighed on digital scale, White Sands Missile Range, New Mexico.

Image: Brewer's Sparrow
February 26, 2006

Brewer's Sparrow

John Warzybok secures a Brewer's sparrow (Spizella breweri), White Sands Missle Range, New Mexico.

Image: Brewer's Sparrow Being Held for Assessment
February 26, 2006

Brewer's Sparrow Being Held for Assessment

John Warzybok records data whille Caroline Poli secures a Brewer's sparrow (Spizella breweri) for assessment, White Sands Missile Range, New Mexico.

Image: Bagged Brewer's Sparrows
February 10, 2006

Bagged Brewer's Sparrows

Sampling bags holding Brewer's sparrows (Spizella breweri), White Sands Missile Range, New Mexico.

Image: Brewer's Sparrow Being Assessed
February 10, 2006

Brewer's Sparrow Being Assessed

John Warzybok assesses a Brewer's sparrow (Spizella breweri) at White Sands Missile Range, New Mexico.