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Honey bee colony failure is primarily due to the infestation of mites and agricultural pesticides, including neonicotinoids. USGS researches the impacts these have on honey bee reproductive capabilities.
Neonicotinoid insecticides the fastest growing insecticide worldwide - and may play a role in the declines of terrestrial and aquatic vertebrate species.
Remote sensing helps USGS scientists detect and map surface oil in coastal environments.
With the help of remote sensing, USGS maps the progression of marsh dieback along the Louisiana coast.
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.
Using Environmental DNA for Burmese Python Detection Probabilities and Range-Delimitation in Southern Florida
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.
To better understand coastal response to sea-level rise, USGS is monitoring coastal wetland sediment elevations along Florida's east coast.
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...
Translocation of imperiled fishes: Conservation introduction of threatened bull trout in Glacier National Park
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...
Contaminants Assessments in the Coral Reefs of the Virgin Islands National Park and Virgin Islands Coral Reef National Monument
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.
Prevalence Rates of Snake Fungal Disease and its Population-Level Impacts in a Snake Assemblage in Southwest Louisiana
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.
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.
Plant diversity predicts beta but not alpha diversity of soil microbes across grasslands worldwide
Aboveground–belowground interactions exert critical controls on the composition and function of terrestrial ecosystems, yet the fundamental relationships between plant diversity and soil microbial diversity remain elusive. Theory predicts predominantly positive associations but tests within single sites have shown variable relationships, and...Prober, Suzanne M.; Leff, Jonathan W.; Bates, Scott T.; Borer, Elizabeth T.; Firn, Jennifer; Harpole, W. Stanley; Lind, Eric M.; Seabloom, Eric W.; Adler, Peter B.; Bakker, Jonathan D.; Cleland, Elsa E.; DeCrappeo, Nicole; DeLorenze, Elizabeth; Hagenah, Nicole; Hautier, Yann; Hofmockel, Kirsten S.; Kirkman, Kevin P.; Knops, Johannes M. H.; La Pierre, Kimberly J.; MacDougall, Andrew S.; McCulley, Rebecca L.; Mitchell, Charles E.; Risch, Anita C.; Schuetz, Martin; Stevens, Carly J.; Williams, Ryan J.; Fierer, Noah
Implications of the circumpolar genetic structure of polar bears for their conservation in a rapidly warming Arctic
We provide an expansive analysis of polar bear (Ursus maritimus) circumpolar genetic variation during the last two decades of decline in their sea-ice habitat. We sought to evaluate whether their genetic diversity and structure have changed over this period of habitat decline, how their current genetic patterns compare with past patterns, and how...Peacock, Elizabeth L.; Sonsthagen, Sarah A.; Obbard, Martyn E.; Boltunov, Andrei N.; Regehr, Eric V.; Ovsyanikov, Nikita; Aars, Jon; Atkinson, Stephen N.; Sage, George K.; Hope, Andrew G.; Zeyl, Eve; Bachmann, Lutz; Ehrich, Dorothee; Scribner, Kim T.; Amstrup, Steven C.; Belikov, Stanislav; Born, Erik W.; Derocher, Andrew E.; Stirling, Ian; Taylor, Mitchell K.; Wiig, Øystein; Paetkau, David; Talbot, Sandra L.
Evaluating and ranking threats to the long-term persistence of polar bears
The polar bear (Ursus maritimus) was listed as a globally threatened species under the U.S. Endangered Species Act (ESA) in 2008, mostly due to the significant threat to their future population viability from rapidly declining Arctic sea ice. A core mandate of the ESA is the development of a recovery plan that identifies steps to maintain viable...Atwood, Todd C.; Marcot, Bruce G.; Douglas, David C.; Amstrup, Steven C.; Rode, Karyn D.; Durner, George M.; Bromaghin, Jeffrey F.
Anatomy of an eradication effort: Removing Hawaii's illegally introduced axis deer
In February 2011, a rancher in the rural southern part of Hawaii Island reported a large mammal on her land. Her call mobilized several agencies led by the Big Island Invasive Species Committee (BIISC), a partnership to prevent, detect, and control the establishment and spread of invasive species, to sit up and take notice. Agency biologists...Hess, Steven C.; Muise, Jake; Schipper, Jan
Fifty-sixth supplement to the American Ornithologists' Union: Check-list of North American Birds
This is the 15th supplement since publication of the 7th edition of the Check-list of North American Birds (American Ornithologists' Union [AOU] 1998). It summarizes decisions made between May 15, 2014, and April 15, 2015, by the AOU's Committee on Classification and Nomenclature - North and Middle America. The Committee has continued to operate...Chesser, R. Terry; Banks, Richard C.; Burns, Kevin J; Cicero, Carla; Dunn, Jon L.; Kratter, Andrew W.; Lovette, Irby J.; Navarro-Siguenza, Adolfo G.; Rasmussen, Pamela C.; Remsen, J V; Rising, James D.; Stotz, Douglas F.; Winker, Kevin
Microsatellite variation and rare alleles in a bottlenecked Hawaiian Islands endemic: implications for reintroductions
Conservation of genetic biodiversity in endangered wildlife populations is an important challenge to address since the loss of alleles and genetic drift may influence future adaptability. Reintroduction aims to re-establish species to restored or protected ecosystems; however, moving a subset of individuals may result in loss of gene variants...Reynolds, Michelle H.; Pearce, John M.; Lavretsky, Philip; Seixas, Pedro P.; Courtot, Karen
An assessment of arthropod prey resources at Nakula Natural Area Reserve, a potential site of reintroduction for Kiwikiu (Pseudonestor xanthophrys) and Maui `Alauahio (Parareomyza montana).
Hawaiian forest birds have declined dramatically since humans arrived in the archipelago. Birds from all foraging guilds have been affected but insectivorous species are currently at greatest risk of extinction. On the island of Maui, populations and ranges of the insectivorous kiwikiu (Maui parrotbill; Pseudonestor xanthophrys) and Maui ‘...Banko, Paul C.; Peck, Robert W.; Cappadonna, Justin; Steele, Claire; Leonard, David L.; Mounce, Hanna L.; Becker, Dusti; Swinnerton, Kirsty
Ants of the national park of American Samoa
American Samoa makes up the eastern end of the Samoan Archipelago. On the islands of Tutuila, Taʽū and Ofu, the National Park of American Samoa (NPSA) protects about 4,000 ha of coastal, mid-slope and ridge-top forest. While the ant fauna of the Samoan Archipelago is considered relatively well documented, much of NPSA has never been surveyed for...Banko, Paul C.; Peck, Robert W.
Climate change and vulnerability of bull trout (Salvelinus confluentus) in a fire-prone landscape.
Linked atmospheric and wildfire changes will complicate future management of native coldwater fishes in fire-prone landscapes, and new approaches to management that incorporate uncertainty are needed to address this challenge. We used a Bayesian network (BN) approach to evaluate population vulnerability of bull trout (Salvelinus confluentus) in...Falke, Jeffrey A.; Flitcroft, Rebecca L; Dunham, Jason B.; McNyset, Kristina M.; Hessburg, Paul F.; Reeves, Gordon H.
Evaluating nurse plants for restoring native woody species to degraded subtropical woodlands
Harsh habitats dominated by invasive species are difficult to restore. Invasive grasses in arid environments slow succession toward more desired composition, yet grass removal exacerbates high light and temperature, making the use of “nurse plants” an appealing strategy. In this study of degraded subtropical woodlands dominated by...Yelenik, Stephanie G.; DiManno, Nicole; D’Antonio, Carla M.
Long-term growth-increment chronologies reveal diverse influences of climate forcing on freshwater and forest biota in the Pacific Northwest
Analyses of how organisms are likely to respond to a changing climate have focused largely on the direct effects of warming temperatures, though changes in other variables may also be important, particularly the amount and timing of precipitation. Here, we develop a network of eight growth-increment width chronologies for freshwater mussel species...Black, Bryan A.; Dunham, Jason B.; Blundon, Brett W.; Brim-Box, Jayne; Tepley, Alan J.
Moving from awareness to action: Advancing climate change vulnerability assessments and adaptation planning for Idaho and Montana National Forests
No abstract available.Kershner, Jessi; Torregrosa, Alicia; Woodward, Andrea