USGS is laying the groundwork for better scientific understanding of wildlife population level impacts from a variety of potential threats to species from big game, to birds, to bats, to pollinators.
Pollinator Research
Using Artificial Flowers to Survey for Pollinators
Conservation Genetics of the Hawaiian Hoary Bat
Determining the dietary preferences and population genetics of an endangered bumble bee, Bombus affinis, by maximizing the use of museum specimens
Managing for Grassland Health at Buenos Aires National Wildlife Refuge
Evaluation of conservation grazing versus prescribed fire to manage tallgrass prairie remnants for plant and pollinator species diversity
Quantifying the effects of land-use change and bioenergy crop production on ecosystem services in the Northern Great Plains
Developing a sampling and modeling framework to support Dakota skipper management decisions
The pollinator library: a decision-support tool for improving national pollinator conservation efforts
To control or not to control: response of pollinator communities to invasive plant management
Long-term changes in pollinator resources (alfalfa, sweetclover, milkweed) and monarch butterfly populations in CRP grasslands
Improving forage for honey bees and native pollinators on Federal conservation lands
Understanding how land-use change in the Northern Great Plains affects pollinator health and pollination services
Explore our science using the data below.
Species Distribution Models for Native Species in the Mojave Desert
Concentrations of pesticides in multiple matrices to measure exposure of wild bees visiting pollinator hedgerows in northern California
Insect community responses to climate and weather across elevation gradients in the Sagebrush Steppe, eastern Oregon 2012 and 2013
Western Gulf Coastal Plain Louisiana Land Use and Land Cover ground truth observations from 2016 to 2017
Pesticides in pollinator tissue collected from margins near agricultural fields in Conservation Areas of Missouri
High forb diversity prairie reconstruction at Neal Smith NWR 2005-2015
Dataset: Plant and bee transects in the Northern Great Plains 2015-2018
Bee populations and habitat survey in southwest Louisiana grasslands
Uptake and toxicity of clothianidin to monarch butterflies from milkweed consumption (ver. 2.0, January 2020)
Variation in pollen transport, Badlands NP, 2018
Radio telemetry data on nighttime movements of two species of migratory nectar-feeding bats (Leptonycteris) in Hidalgo County, New Mexico, late-summer 2004 and 2005
Soil, geomorphology and pre-European settlement vegetation associations of Southwest Louisiana
Recent publications (2020-2022) related to USGS pollinator research are listed below. A complete listing of USGS pollinator publications is available from the button below.
Assessing population genomic structure and polyploidy: A crucial step for native plant restoration
Warming temperatures affect meadow-wide nectar resources, with implications for plant-pollinator communities
Seed menus: An integrated decision-support framework for native plant restoration in the Mojave Desert
Pesticide exposure of wild bees and honey bees foraging from field border flowers in intensively managed agriculture areas
The importance of forests in bumble bee biology and conservation
Patch utilization and flower visitations by wild bees in a honey bee-dominated, grassland landscape
Farmland in U.S. Conservation Reserve Program has unique floral composition that promotes bee summer foraging
Honey bee (Apis mellifera) colonies benefit from grassland/ pasture while bumble bee (Bombus impatiens) colonies in the same landscapes benefit from non-corn/soybean cropland
Pollinator communities vary with vegetation structure and time since management within regenerating timber harvests of the Central Appalachian Mountains
Spatiotemporal dynamics of insect pollinator communities in sagebrush steppe associated with weather and vegetation
Floral resource selection by wild bees and honey bees in the Midwest United States: Implications for designing pollinator habitat
Land conversion and pesticide use degrade forage areas for honey bees in America’s beekeeping epicenter
- Overview
USGS is laying the groundwork for better scientific understanding of wildlife population level impacts from a variety of potential threats to species from big game, to birds, to bats, to pollinators.
Pollinator ResearchFilter Total Items: 22Using Artificial Flowers to Survey for Pollinators
Pollinators, such as bees and butterflies, are critical for the success of agriculture and must have suitable habitat to thrive. Planting pollinator-friendly plants under and around solar panels has the potential to benefit pollinators and nearby agriculture while contributing to renewable energy production.Conservation Genetics of the Hawaiian Hoary Bat
The Hawaiian Hoary Bat (Lasiurus semotus) or ʻōpeʻapeʻa is the only extant land mammal native to the Hawaiian archipelago and is listed as endangered due to apparent population declines, and a lack of knowledge concerning its distribution, abundance, and habitat needs. This study is designed to apply molecular techniques to document demographic information, assess genetic variability, describe...Determining the dietary preferences and population genetics of an endangered bumble bee, Bombus affinis, by maximizing the use of museum specimens
Bombus affinis, the rusty patched bumble bee, was federally listed as an endangered species in 2017 and has been identified as one of the top priority species for recovery nationally. Shortly after listing the species, the U.S. Fish and Wildlife Services and other partners prioritized the research needed to prevent the extinction of B. affinis. Some of the top research needs that were identified...Managing for Grassland Health at Buenos Aires National Wildlife Refuge
Southern Arizona’s semi-desert grasslands provides habitat for flora and fauna, regulates rainfall infiltration and overland flow, mitigates surface erosion and dust production, and sequesters carbon. Sustainable management is important to maintain these ecological services and is of concern for the managers, ranchers, and other people associated with the grassland. The Buenos Aires National...Evaluation of conservation grazing versus prescribed fire to manage tallgrass prairie remnants for plant and pollinator species diversity
With scarcely 2% of native tallgrass prairie remaining today, it is imperative that we wisely manage what little remains to conserve prairie-dependent plants, pollinators, other animals and ecosystem processes. Two commonly used methods of prairie management are prescribed fire and conservation grazing. Either method may present trade-offs with respect to conservation of vulnerable plant, bee or...Quantifying the effects of land-use change and bioenergy crop production on ecosystem services in the Northern Great Plains
Rising commodity crop prices, increased federal subsidies for biofuels, such as corn-based ethanol and soy-based biodiesel, and reduction in U.S. Farm Bill conservation programs have facilitated rapid land-use changes in the Northern Great Plains (NGP). Although renewable biofuels are touted as a mechanism for increasing energy security and potentially reducing greenhouse gas emissions, little is...Developing a sampling and modeling framework to support Dakota skipper management decisions
The presence or absence of an endangered species on the landscape can have significant policy implications for public land managers and private landowners. The Dakota Skipper, a grassland dependent butterfly, was recently listed as a threatened species under The Endangered Species Act in 2014. This listing has created controversy in the states of North and South Dakota because of the potential...The pollinator library: a decision-support tool for improving national pollinator conservation efforts
Pollinator declines have emphasized the need for a greater understanding of plant-pollinator networks and land management activities that improve pollinator habitat. At the request of USDA and FWS partners, Northern Prairie Wildlife Research Center created the Pollinator Library for managers and researchers interested in improving pollinator forage on federal and private lands. The aim of the...To control or not to control: response of pollinator communities to invasive plant management
If invasive plants are producing pollen and nectar used by native pollinators, what happens when a manager decides to control the invasive plant? Northern Prairie Wildlife Research Center is addressing this question and has found that pollinators are adept at changing their resource acquisition strategies as abundantly flowering invasive species decline. In addition, it appears that the invasive...Long-term changes in pollinator resources (alfalfa, sweetclover, milkweed) and monarch butterfly populations in CRP grasslands
Federal cropland retirement programs are increasingly being used to provide resources for pollinators (e.g., nectar, pollen, host plants). Pollinator-friendly plant species (e.g., alfalfa, sweetclover) were readily included in seed mixes in Conservation Reserve Program (CRP) grasslands since its inception in the 1985 Farm Bill. Through time, some native plant species (e.g., milkweeds) also...Improving forage for honey bees and native pollinators on Federal conservation lands
Since its inception in 1933, the U.S. Farm Bill has been one of the most influential federal policies for agriculture and food production. Provisions within the Farm Bill have profound influence on global trade, nutrition programs, commodity crop programs, rural communities, and land conservation. Northern Prairie’s research quantifies the impact on pollinator forage and health of USDA...Understanding how land-use change in the Northern Great Plains affects pollinator health and pollination services
Societal dependence on insects for pollination of agricultural crops has risen amidst concerns over global pollinator declines. Habitat loss and lack of forage have been implicated in the decline of managed and native pollinators in the U.S. Northern Prairie Wildlife Research Center is conducting a regional research project to understand how land use affects honey bee colony health, and the... - Data
Explore our science using the data below.
Filter Total Items: 13Species Distribution Models for Native Species in the Mojave Desert
Preserving native species diversity is fundamental to ecosystem conservation. Selecting appropriate native species for use in restoration is a critical component of project design and may emphasize species attributes such as life history, functional type, pollinator services, and nutritional value for wildlife. Determining which species are likely to establish and persist in a particular environmeConcentrations of pesticides in multiple matrices to measure exposure of wild bees visiting pollinator hedgerows in northern California
To better understand the exposure of wild bees to pesticides in an agricultural landscape, samples were collected from fields in northern California. Hedgerows are known to provide habitat for wild bees, but these bees may also be exposed to pesticides from nearby agricultural fields. The study included eight hedgerow sites located in an intensively managed agricultural landscape that includes almInsect community responses to climate and weather across elevation gradients in the Sagebrush Steppe, eastern Oregon 2012 and 2013
In this study, the U.S. Geological Survey investigated the use of insects as bioindicators of climate change in sagebrush steppe shrublands and grasslands in the Upper Columbia Basin. The research was conducted in the Stinkingwater and Pueblo mountain ranges in eastern Oregon on lands administered by the Bureau of Land Management. We used a "space-for-time" sampling design that related iWestern Gulf Coastal Plain Louisiana Land Use and Land Cover ground truth observations from 2016 to 2017
Collaborative landscape conservation planning is largely limited by the quality of spatial data which can be applied to decision support tools to inform conservation decisions. Conservation entities across the Western Gulf Coastal Plain are taking a collaborative, strategic, landscape scale approach to conservation planning. This effort encourages communication and implementation of restoration anPesticides in pollinator tissue collected from margins near agricultural fields in Conservation Areas of Missouri
Wild bee and butterfly samples were collected from the margins of agricultural fields located on five Conservation Areas in Missouri. In 2016 and 2017, samples were collected and composited by genera for a total of 90 samples. Samples were extracted via pressurized liquid extraction and solid phase extraction cleanup. Samples were analyzed for 168 pesticides and degradates using both gas and liquiHigh forb diversity prairie reconstruction at Neal Smith NWR 2005-2015
This data set consists of data collected during 2005-2007, 2010, and 2015 at Neal Smith National Wildlife Refuge in Iowa, USA that were used in the analysis in support of the article titled "Toward improving pollinator habitat: Reconstructing prairies with high forb diversity," which has been submitted to Natural Areas Journal. We compared pollinator habitat, in terms of planted forb richness, covDataset: Plant and bee transects in the Northern Great Plains 2015-2018
These data were collected to fulfill multiple Inter-agency agreements established by USGS and multiple partners: USDA Farm Service Agency, USDA Natural Resources Conservation Service, and the Honey Bee Health Coalition. In this study USGS scientists conducted floral resource and insect pollinator assessments across multiple land covers in North Dakota, South Dakota, and Minnesota from 2015 to 201Bee populations and habitat survey in southwest Louisiana grasslands
The coastal prairie of Louisiana is classified as a Tier 1 Habitat in the Louisiana Department of Wildlife and Fisheries' Wildlife Action Plan, meaning that it is a priority habitat of primary conservation concern. Declines in pollinator populations worldwide have prompted questions about the role of such grasslands as habitat for pollinators. In this study, we surveyed bee populations and the plaUptake and toxicity of clothianidin to monarch butterflies from milkweed consumption (ver. 2.0, January 2020)
Recent concern for the adverse effects from neonicotinoid insecticides has centered on risk for insect pollinators in general and bees specifically. However, natural resource managers are also concerned about the risk of neonicotinoids to conservation efforts for the monarch butterfly (Danaus plexippus) and need a tool to estimate risk for wild monarch butterflies exposed to clothianidin. In the pVariation in pollen transport, Badlands NP, 2018
This dataset consists of data collected at Badlands National Park (Interior, SD) that were used in the analysis in support of the article titled "Conserving all the pollinators: Variation in probability of pollen transport among insect taxa," which has been submitted to "Natural Areas Journal." Data collected between May-October, 2010 and 2011, and June-July 2012 included insects found in contactRadio telemetry data on nighttime movements of two species of migratory nectar-feeding bats (Leptonycteris) in Hidalgo County, New Mexico, late-summer 2004 and 2005
These bat location estimates have been reported by Bogan and others (In press) and come in the form of a GIS shape file. Three species of nectar-feeding phyllostomid bats migrate north from Mexico into deserts of the United States (U.S.) each spring and summer to feed on blooms of columnar cacti and century plants (Agave spp). However, the habitat needs of these important desert pollinators are pSoil, geomorphology and pre-European settlement vegetation associations of Southwest Louisiana
Defining the pre-European range of vegetation communities can enhance our understanding of the role soil, hydrology, and climate had on climax plant communities within southwest Louisiana. Coastal prairie grasslands were in a perpetual state of succession due to two primary disturbances; grazing, primarily by bison and other ungulates, and fires ignited by lightning and Native Americans. Along its - Publications
Recent publications (2020-2022) related to USGS pollinator research are listed below. A complete listing of USGS pollinator publications is available from the button below.
Filter Total Items: 28Assessing population genomic structure and polyploidy: A crucial step for native plant restoration
Establishing an effective restoration program requires baseline genetic information to make sound decisions for seed increase and transfer. For many plants this information is lacking, especially among native forbs that are critical for pollinator health. Erigeron speciosus is a widespread, perennial forb occupying montane environments in the western United States and Canada. This species is imporWarming temperatures affect meadow-wide nectar resources, with implications for plant-pollinator communities
Nectar production may be a point of sensitivity that can help link primary and secondary trophic responses to climate shifts, and is therefore important to our understanding of ecosystem responses. We evaluated the nectar response of two widespread native forbs, Balsamorhiza sagittata and Eriogonum umbellatum, to experimental warming in a high-elevation sagebrush meadow in the Teton Range, WY, USASeed menus: An integrated decision-support framework for native plant restoration in the Mojave Desert
The combination of ecosystem stressors, rapid climate change, and increasing landscape-scale development has necessitated active restoration across large tracts of disturbed habitats in the arid southwestern United States. In this context, programmatic directives such as the National Seed Strategy for Rehabilitation and Restoration have increasingly emphasized improved restoration practices that pPesticide exposure of wild bees and honey bees foraging from field border flowers in intensively managed agriculture areas
Bees are critical for food crop pollination, yet their populations are declining as agricultural practices intensify. Pollinator-attractive field border plantings (e.g. hedgerows and forb strips) can increase bee diversity and abundance in agricultural areas, however recent studies suggest these plants may contain pesticides. Pesticide exposure for wild bees in agricultural areas remains largely uThe importance of forests in bumble bee biology and conservation
Declines of many bumble bee species have raised concerns because of their importance as pollinators and potential harbingers of declines among other insect taxa. At present, bumble bee conservation is predominantly focused on midsummer flower restoration in open habitats. However, a growing body of evidence suggests that forests may play an important role in bumble bee life history. Compared withPatch utilization and flower visitations by wild bees in a honey bee-dominated, grassland landscape
Understanding habitat needs and patch utilization of wild and managed bees has been identified as a national research priority in the United States. We used occupancy models to investigate patterns of bee use across 1030 transects spanning a gradient of floral resource abundance and richness and distance from apiaries in the Prairie Pothole Region (PPR) of the United States. Estimates of transectFarmland in U.S. Conservation Reserve Program has unique floral composition that promotes bee summer foraging
Bee conservation is a topic of global concern, particularly in agroecosystems where their contribution to crop pollination is highly valued. Over a decade ago, bees and other pollinators were made a priority of the Conservation Reserve Program (CRP), a U.S. federal program that pays land owners to establish a conservation cover, typically grassland, on environmentally sensitive farmland. Despite lHoney bee (Apis mellifera) colonies benefit from grassland/ pasture while bumble bee (Bombus impatiens) colonies in the same landscapes benefit from non-corn/soybean cropland
Agriculturally important commercially managed pollinators including honey bees (Apis mellifera L., 1758) and bumble bees (Bombus impatiens Cresson, 1863) rely on the surrounding landscape to fulfill their dietary needs. A previous study in Europe demonstrated that managed honey bee foragers and unmanaged native bumble bee foragers are associated with different land uses. However, it is unclear howPollinator communities vary with vegetation structure and time since management within regenerating timber harvests of the Central Appalachian Mountains
Native pollinator populations across the United States are increasingly threatened by a multitude of ecological stressors. Although the drivers behind pollinator population declines are varied, habitat loss/degradation remains one of the most important threats. Forested landscapes, where the impacts of habitat loss/degradation are minimized, are known to support robust pollinator populations in eaSpatiotemporal dynamics of insect pollinator communities in sagebrush steppe associated with weather and vegetation
The conservation of native insect pollinators is hampered by a lack of information about environmental factors influencing pollinator communities. We investigated how insect pollinator communities, composed of bees (Hymenoptera), butterflies and moths (Lepidoptera), and flies (Diptera), are influenced by spatial and temporal aspects of the environment in sagebrush steppe shrublands. We assessed hyFloral resource selection by wild bees and honey bees in the Midwest United States: Implications for designing pollinator habitat
Many seed mix recommendations for creating pollinator habitat are in part based on anecdotal evidence or field observations of bees visiting forbs (i.e. use). However, there is limited information on what forbs are preferred by bees, particularly in working landscapes where bee forage may be limited. We examined floral resource selection by wild bees and honey bees on grasslands in the Midwest usiLand conversion and pesticide use degrade forage areas for honey bees in America’s beekeeping epicenter
A diverse range of threats have been associated with managed bee declines globally. Recent increases of two known threats, land-use change and pesticide use, have resulted from agricultural expansion and intensification notably in the top honey producing state in the United States (U.S.): North Dakota. This study investigated the dual threat from land conversion and pesticide use surrounding ~14,0