Are Eastern Monarch Butterflies at Risk of Extinction?
Long-term declines in their overwintering populations are increasing the likelihood of extinction, according to a new study in Scientific ReportsRead more
Mission Areas L2 Landing Page Tabs
The Challenge: Within the Mississippi Alluvial Valley (MAV), forest managers may prescribe variable retention silvicultural treatments within bottomland hardwood forests on public lands to improve forest conditions (i.e., structural heterogeneity, species composition, and senescence) for priority wildlife species. This is referred to as wildlife-forestry silviculture. However, concerns have...
The Challenge: Avian monitoring within the Gulf Coast Network of the National Park Service is challenged to provide valid quantitative data on bird populations within park boundaries with limited financial input. Thus, citizen science (volunteer) bird monitoring has been proposed to achieve reliable estimates of bird populations and to assess the effects of habitat change and temporal dynamics...
The Challenge: Achieving conservation objectives in protected natural areas requires the ability to sustain visitation while avoiding or minimizing adverse environmental impacts. Trails are an essential infrastructure component that limits resource impacts by concentrating use on hardened treads designed and maintained to sustain traffic. This is particularly challenging...
The Challenge: The Potomac River Gorge, managed by the National Park Service in Virginia and Maryland, is a highly accessible protected natural area bordered by the intensively developed Washington metro region. The Gorge is biologically rich, with more than 400 occurrences of over 200 rare species. Potomac Gorge receives exceptionally heavy visitation, with nearly two...
The Challenge: The proliferation and degradation of visitor-created “informal” trails in protected areas can be a vexing management issue for land managers. Formal trail systems never provide access to all locations required by visitors seeking to engage in a variety of appropriate recreational activities. Traveling off-trail may be necessary to engage in...
The Challenge: Estuaries in northeastern states are severely threatened by the adverse impacts of nutrient over-enrichment. USGS led the development of a vital-signs protocol to monitor estuarine nutrient status in northeastern National Parks, and monitoring has been operational in coastal parks from Massachusetts to Virginia since 2006. Monitoring results must be...
The Challenge: Seagrasses are productive and important components of shallow coastal waters, and they have suffered extensive declines worldwide. Because seagrasses are directly in the path of watershed nutrient inputs, a major cause of habitat loss is coastal development and consequent water quality degradation. Improved approaches for detecting threats of nutrient...
The Challenge: In eastern North America there is a viral disease called Eastern Equine Encephalitis, or EEE. This virus is transmitted among native bird species by the mosquito, Culiseta melanura, but does not cause disease in these passerine species. However, the virus is capable of causing severe disease or death in horses, some game bird species, humans and whooping...
The Challenge: Whooping cranes have been successfully introduced using costume rearing techniques in either a direct autumn release or in an ultralight led migration from Wisconsin to Florida. In Florida, we have also released parent-reared whooping cranes. Not much is known about the learning that takes place in this K-selected species over the almost one year that...
The Challenge: Many critical wildlife surveys, such as the North American Breeding Bird Survey (BBS), are analyzed using complex hierarchical models. These models are generally multi-scale and contain random effects; the standard approaches to model selection and assessment of model fit are often inappropriate and no simple way exists to compare alternative models....
The Challenge: Over the last half of the 20th century, the breeding range of American black duck (Anas rubripes) has contracted from central Canada and the Northeastern United States toward eastern Canada. This reduction in size of the breeding range has been reflected in a steady decline of black ducks counted during winter surveys, both the midwinter Waterfowl Survey...
The Challenge: Population status information is required for management of migratory bird populations, and structured decision making and adaptive anagement place additional emphasis on the need for rigorous survey designs and robust estimation methods. The North American Breeding Bird Survey (BBS) and Christmas Bird Count (CBC) provide continent-scale information on ...
This site provides data and tools to help answer the question of how well we are protecting common plants and animals (GAP Analysis). Choose a state or the entire United States. Download data for land cover, species, protected areas and more or view online, using the interactive GAP Data Viewers.
Provides standardized information about the vascular plants, mosses, liverworts, hornworts, and lichens of the United States and its territories.
Provides soil data and information produced by the National Cooperative Soil Survey.
This tool produces and provides information on the characteristics, extent, and status of the Nation's wetlands and deepwater habitats and other wildlife habitats.
At this website, one can view lists of native freshwater snails by state or province boundary, and plot distributions of snails by political boundaries. Lists can be downloaded for use in reports or analyses. Data file last updated 12/17/2013.
The 2008 AFS Endangered Species Committee list of imperiled freshwater and diadromous fishes of North America
At this website, one can view lists of imperiled fishes by freshwater ecoregion, by state or province boundary, and plot distributions of imperiled fishes by ecoregions or political boundaries. Data file last updated 4/25/2013.
The 2007 AFS Endangered Species Committee list of common and imperiled freshwater crayfishes of the United States and Canada
At this website, one can view lists of crayfishes by freshwater ecoregion, by state or province boundary, and plot distributions of crayfishes by ecoregions or political boundaries. Data file last updated 3/17/2011.
A simple web-based tool to compare freshwater fish data collected using AFS standard methods
The American Fisheries Society (AFS) recently published Standard Methods for Sampling North American Freshwater Fishes. Enlisting the expertise of 284 scientists from 107 organizations throughout Canada, Mexico, and the United States, this text was developed to facilitate comparisons of fish data across regions or time. Here we describe...Bonar, Scott A.; Mercado-Silva, Norman; Rahr, Matt; Torrey, Yuta T.; Cate, Averill
Restored agricultural wetlands in Central Iowa: habitat quality and amphibian response
Amphibians are declining throughout the United States and worldwide due, partly, to habitat loss. Conservation practices on the landscape restore wetlands to denitrify tile drainage effluent and restore ecosystem services. Understanding how water quality, hydroperiod, predation, and disease affect amphibians in restored wetlands is central to...Reeves, Rebecca A.; Pierce, Clay; Smalling, Kelly L. ; Klaver, Robert W.; Vandever, Mark W.; Battaglin, William A.; Muths, Erin L.
Flexible risk metrics for identifying and monitoring conservation-priority species
Region-specific conservation programs should have objective, reliable metrics for species prioritization and progress evaluation that are customizable to the goals of a program, easy to comprehend and communicate, and standardized across time. Regional programs may have vastly different goals, spatial coverage, or management agendas, and one-size-...Stanton, Jessica C.; Semmens, Brice X.; McKann, Patrick C.; Will, Tom; Thogmartin, Wayne E.
Diagnostic and model dependent uncertainty of simulated Tibetan permafrost area
We perform a land-surface model intercomparison to investigate how the simulation of permafrost area on the Tibetan Plateau (TP) varies among six modern stand-alone land-surface models (CLM4.5, CoLM, ISBA, JULES, LPJ-GUESS, UVic). We also examine the variability in simulated permafrost area and distribution introduced by five different...Wang, A.; Moore, J.C.; Cui, Xingquan; Ji, D.; Li, Q.; Zhang, N.; Wang, C.; Zhang, S.; Lawrence, D.M.; McGuire, A.D.; Zhang, W.; Delire, C.; Koven, C.; Saito, K.; MacDougall, A.; Burke, E.; Decharme, B.
Effects of wind-energy facilities on grassland bird distributions
The contribution of renewable energy to meet worldwide demand continues to grow. Wind energy is one of the fastest growing renewable sectors, but new wind facilities are often placed in prime wildlife habitat. Long-term studies that incorporate a rigorous statistical design to evaluate the effects of wind facilities on wildlife are rare. We...Shaffer, Jill A.; Buhl, Deb
The influence of a severe reservoir drawdown on springtime zooplankton and larval fish assemblages in Red Willow Reservoir, Nebraska
Reservoirs can be dynamic systems, often prone to unpredictable and extreme water-level fluctuations, and can be environments where survival is difficult for zooplankton and larval fish. Although numerous studies have examined the effects of extreme reservoir drawdown on water quality, few have examined extreme drawdown on both abiotic and biotic...DeBoer, Jason A.; Webber, Christa M.; Dixon, Taylor A.; Pope, Kevin L.
Postnatal growth rates covary weakly with embryonic development rates and do not explain adult mortality probability among songbirds on four continents
Growth and development rates may result from genetic programming of intrinsic processes that yield correlated rates between life stages. These intrinsic rates are thought to affect adult mortality probability and longevity. However, if proximate extrinsic factors (e.g., temperature, food) influence development rates differently between stages and...Martin, Thomas E.; Oteyza, Juan C.; Mitchell, Adam E.; Potticary, Ahva L.; Lloyd, P.
Optimizing surveillance for South American origin influenza A viruses along the United States Gulf Coast through genomic characterization of isolates from blue-winged teal (Anas discors)
Relative to research focused on intercontinental viral exchange between Eurasia and North America, less attention has been directed towards understanding the redistribution of influenza A viruses (IAVs) by wild birds between North America and South America. In this study, we genomically characterized 45 viruses isolated from blue-winged teal (Anas...Ramey, Andy M.; Walther, Patrick; Link, Paul Karl; Poulson, Rebecca L.; Wilcox, Benjamin R.; Newsome, George M.; Spackman, Erica; Brown, J.; Stallknecht, David E.
State-space modeling to support management of brucellosis in the Yellowstone bison population
The bison (Bison bison) of the Yellowstone ecosystem, USA, exemplify the difficulty of conserving large mammals that migrate across the boundaries of conservation areas. Bison are infected with brucellosis (Brucella abortus) and their seasonal movements can expose livestock to infection. Yellowstone National Park has embarked on a program of...Hobbs, N. Thompson; Geremia, Chris; Treanor, John; Wallen, Rick; White, P.J.; Hooten, Mevin B.; Rhyan, Jack C.
Seasonal cues of Arctic grayling movement in a small Arctic stream: the importance of surface water connectivity
In Arctic ecosystems, freshwater fish migrate seasonally between productive shallow water habitats that freeze in winter and deep overwinter refuge in rivers and lakes. How these movements relate to seasonal hydrology is not well understood. We used passive integrated transponder tags and stream wide antennae to track 1035 Arctic grayling in Crea...Heim, Kurt C.; Wipfli, Mark S.; Whitman, Matthew S.; Arp, Christopher D.; Adams, Jeff; Falke, Jeffrey A.
Toward a mechanistic understanding of human-induced rapid environmental change: A case study linking energy development, avian nest predation, and predators
Demographic consequences of human-induced rapid environmental change (HIREC) have been widely documented for many populations. The mechanisms underlying such patterns, however, are rarely investigated and yet are critical to understand for effective conservation and management. We investigated the mechanisms underlying reduced avian nest survival...Hethcoat, Matthew G.; Chalfoun, Anna D.
Incorporating microbial dormancy dynamics into soil decomposition models to improve quantification of soil carbon dynamics of northern temperate forests
Soil carbon dynamics of terrestrial ecosystems play a significant role in the global carbon cycle. Microbial-based decomposition models have seen much growth recently for quantifying this role, yet dormancy as a common strategy used by microorganisms has not usually been represented and tested in these models against field observations. Here we...He, Yujie; Yang, Jinyan; Zhuang, Qianlai; Harden, Jennifer W.; McGuire, Anthony; Liu, Yaling; Wang, Gangsheng; Gu, Lianhong
Early Detection Monitoring May Not Be Sufficient for Invasive Mussels in the Columbia River Basin
The Fish Slam event discovered two nonnative fish species never seen before in Big Cypress National Preserve.
Unlike most animals, sea lampreys, an invasive, parasitic species of fish damaging the Great Lakes, could become male or female depending on how quickly they grow, according to a U.S. Geological Survey study published today.
U.S. Geological Survey scientist emeritus Chandler S. Robbins, whose heartfelt love of birds, quicksilver mind, boundless energy and sunny demeanor made him a major force in bird conservation in the U.S. and worldwide, died Monday, March 20 at the age of 98.
Effects of livestock grazing on greater sage-grouse populations can be positive or negative depending on the amount of grazing and when grazing occurs, according to research published today in Ecological Applications. The research was conducted by scientists from the United States Geological Survey, Colorado State University and Utah State University.
Approximately 500 Puaiohi exist in the wild, all on Kauai
Wild ducks and shorebirds do not appear to carry Newcastle disease viruses that sicken or kill poultry, according to a new study led by the U.S. Geological Survey.
A new report by the USGS finds that although snow geese are increasing rapidly in northern Alaska, they are not having a negative effect on black brant. Brant are a goose species that shares its nesting habitat with snow geese.
On March 7, 2017, economist Chris Huber presented at the High Altitude Re-vegetation Workshop and Central Rockies Chapter of the Society for Ecological Restoration 2017 Conference in Fort Collins, Colorado.
FORT ecologist Ellis Margolis' paper, with co-author Steven Malevich, "Historical dominance of low-severity fire in dry and wet mixed-conifer forest habitats of the endangered terrestrial Jemez Mountains salamander (Plethodon neomexicanus)" was recently featured in the USGS publication Climate Matters.
Despite recent changes to the growing season for plants in the Arctic, Alaska, caribou appear to have remained in sync with these changes over the last 30 years.
Scientists can now predict which avian species are most sensitive to the increasingly dominant shrub habitat spreading across Alaska, a capability that will be useful for natural resource agencies in Alaska charged with managing these resources.