USGS Director David Applegate along with Associate Director Anne Kinsinger and Dr. Kurt Kowalski listen to Dr. Wes Bickford describe invasive Phragmites australis and the research being done at the Great Lakes Science Center to control it. Photo Credit: Josh Miller (USGS)
Plants
Plant Detectives
A portable lab speeds the detection of pathogens responsible for disease affecting a keystone tree species in Hawai’i.
Building a Cloud Forest from the Ground Up
California’s Channel Islands were once home to cloud forests, but this unique ecosystem was lost. USGS and partners are bringing them back.
Pollinator Conservation
The USGS Native Bee Inventory and Monitoring Lab designs and develops large- and small-scale surveys for native bees.
Sagebrush Habitat
The sagebrush ecosystem faces major challenges including an increasing risk of wildfire and invasive grasses. USGS is a leader in sagebrush ecosystem research to meet the priority science needs of management agencies.
U.S. Register of Introduced & Invasive Species
The USGS developed a national inventory for non-native and invasive species currently established within all 50 states.
National Seed Strategy
The USGS is collaborating with partners to increase the supply of native seeds for restoration through the National Seed Strategy for Rehabilitation and Restoration.
Where would we be without plants? They are the basis of the food chain and producers of oxygen - and so much more. From marsh grasses to mangroves, from sagebrush to sunflowers, getting to the root of the biology and ecology of plants is a critical component of USGS research.
An Integral Part of Life on Earth
Life as we know it wouldn’t be possible without plants. Plants maintain the atmosphere by producing oxygen and absorbing carbon dioxide, help keep our waterways clean, and provide us with food, shelter, and medicine. Plant communities are influenced by soil, terrain, climate, animals, and human activities, so different groups and types of plants are found in different regions of the country. Grassland plants such as the western prairie fringed orchid are found in the Great Plains, while desert plants such as the saguaro cactus are found in the Southwest. Approximately 391,000 species of vascular plants are currently known to science. Explore examples of USGS science on different plant types below.
Science to Support Healthy Ecosystems
Healthy plants are the foundation of healthy ecosystems. In an era of global change, our Nation’s forests, grasslands, wetlands, and other critical habitats are facing multiple threats that challenge our ability to maintain these ecosystems and the species that depend on them. USGS science provides the information needed to address these challenges and support healthy, thriving plant communities across the country.
Threats to Plants
Understanding, monitoring, and predicting threats to plants contributes to the USGS goal of providing science to support the protection, conservation, and enhancement of the Nation’s biodiversity. Through activities such as identifying strategies for controlling invasive cheatgrass, using novel techniques to identify the presence of disease-causing plant pathogens, and informing recovery plans for at-risk species, USGS science is tackling some of the biggest threats facing plants today.
Land Use Change
The single biggest threat facing plants today is habitat loss. Changes in land use, such as the encroachment of agriculture or urban development into areas that were once covered by natural vegetation, reduce plant population sizes and alter the ecosystems that plants, animals, and humans rely on. Changes in land use can cause species extinctions, destabilize soil, increase erosion, and reduce water quality. USGS scientists are monitoring changes in land use to understand how they are affecting the plants and wildlife that depend on them. Explore examples of our science below:
- Monitoring and assessing the effectiveness of habitat management projects in southwest Wyoming, a 19-million-acre region that supports some of the highest quality wildlife habitats in the Intermountain West, as well as agriculture and energy production. Learn more>>
- Identifying the effects of wind turbines and associated infrastructure on vegetation and how wildlife use these landscapes. Learn more>>
- Understanding how agricultural drainage systems affect wetlands in the Prairie Pothole Region. Learn more>>
- Using satellite imagery to monitor changes in vegetation across the country. Learn more>>
Invasive Plants
Every plant and animal species has a native range where it evolved. When a species exists in a location beyond its natural range, it is considered a “non-native” species in that area. When a non-native species establishes in a new habitat, causing harm to the environment or humans, it becomes “invasive”. The annual estimated economic and health-related costs of invasive species in the U.S. have been reported at more than $21 billion and adversely affect every state in the country. Invasive plants represent a major threat to global and local biodiversity while also having negative socio-economic and human health impacts. Invasive plants displace native plants, prevent native plant growth, reduce agricultural production, and induce allergies.
Invasive plants such as cheatgrass and buffelgrass have increased fire vulnerability and diminished grazing value across the western U.S. Aquatic invasive plants such as the weed hydrilla and giant fern salvinia are clogging waterways. To help combat these invaders, USGS scientists are using new tools to model the potential spread of high impact invasive species and to support the early detection and rapid response of invasive species before they are able to spread and cause harm. If an invasive plant is already established, USGS science is helping land managers reverse and mitigate the negative impacts these invasions are causing. Explore examples of our science to understand and reduce the threat of invasive plants below:
- Understanding how invasive plants affect wildfire patterns. Learn more>>
- Developing the Nonindigenous Aquatic Species (NAS) Alert Risk Mapper: A tool to characterize waterbodies at risk of invasion from new non-native species. Learn more>>
- Using Unmanned Aerial Systems (UAS) to track the spread of Salvinia molesta, a non-native aquatic species that reduces light and oxygen levels in water, making it unsuitable for fish and other aquatic life. Learn more>>
- Identifying strategies for controlling invasive cheatgrass in the western U.S. Learn more>>
Visit our Invasive Species webpage to learn more about USGS activities to monitor and respond to the threat of invasive species across the country.
Disease
![Eelgrass Survey in Alaska](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/half_width/public/thumbnails/image/Eelgrass_survey_in_Alaska.jpg?itok=Taf4s54n)
USGS research is addressing numerous diseases in both plants and animals and leading development efforts in advanced tools such as environmental DNA (eDNA) to assist in prevention and early detection. Explore examples of our science on plant diseases and pathogens below:
- Using new environmental DNA (eDNA) methods to identify the presence of pathogens known to cause the decline of eelgrass, which provides important habitat for birds, fish, and invertebrates in southwestern Alaska. Learn more>>
- Deploying a portable lab to speed detection of pathogens responsible for Rapid ‘Ōhi‘a Death (ROD), a rapidly spreading disease affecting a keystone tree species in Hawai’i. Learn more>>
- Using decades of Landsat satellite imagery to map bark beetle outbreaks, which have devastated certain species of evergreen trees in the Rocky Mountains. Learn more>>
Climate Change
Climate helps shape ecosystems. Things like average temperatures, humidity, and rainfall determine where plants and animals lives. If a region’s climate changes, the ecosystem changes as well. Climate change poses one of the biggest threats to plants, leading to an increased spread of invasive species, increased vulnerability to insect pests, the loss of native plant species and changes in their distribution. USGS scientists are leading efforts to understand the current and future impacts of climate change on plants. This information helps management agencies identify adaptation strategies and actions that can help support vulnerable plant species in the face of a changing climate. Explore examples of our science below:
- Monitoring the conversion of tidal freshwater wetlands in the Southeast and mid-Atlantic to “Ghost Forests”—forests in which trees have died due to increases in salinity as sea levels rise and push saltier water upstream. Learn more>>
- Identifying how changes in the amount and timing of precipitation affect big sagebrush in the Great Basin. Learn more>>
- Investigating the effects of drought and warming temperatures on plants in the southwestern U.S. Learn more>>
- Exploring the effects of estimated future sea-level rise on mangrove forests in Micronesia. Learn more>>
- Using satellite data to monitor changes in phenology, or the study of animal and plant life cycles, a powerful tool for understanding life cycle trends and the impacts of climate change on ecosystems. Learn more>>
Species at Risk
As a result of threats such as the spread of invasive species, disease, and climate and land use change, some plant species are in decline or in danger of extinction. The USGS provides management agencies such as the U.S. Fish and Wildlife Agency and National Park Service with scientific information to support conservation decisions for at-risk plant species. Explore examples of our science below:
![Color photograph of scientists](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/half_width/public/thumbnails/image/image2-1451.jpg?itok=JZM2joDs)
![Measuring Evening Primrose](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/half_width/public/thumbnails/image/MeasuringEvenPrimrose_LAD.jpg?itok=Ny9o2PsM)
Ecosystem Restoration
Ecosystem restoration is the act of rehabilitating a degraded or lost ecosystems through activities such as planting native trees and shrubs and controlling invasive species. To do this, land managers need tools to help get the right plants, in the right place, at the right time for successful restoration. The USGS develops strategies and techniques to understand and facilitate the restoration of native species and habitats that have deteriorated due to threats such as invasive species and climate change. Explore examples of our science below:
![A group of land managers gather at a restoration site inside of a desert wash.](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/half_width/public/thumbnails/image/Hopi%20restoration.jpg?itok=iFZTdoXV)
![View of the ocean peeking through a Torrey pine tree](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/half_width/public/thumbnails/image/Day10_TorreyPine_NPS.jpg?itok=zj0MNB9u)
![Graham's beardtongue (Penstemon grahamii)](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/half_width/public/media/images/Graham%27sBeardtongue_Penstemon_grahamii-Book_Cliffs_Uinta_Basin_Utah-DanielWinkler_USGS.jpg?itok=-LPTM09F)
Science
Fostering greater use of habitat models for managing rare and invasive plants on public lands
Invasive Phragmites Science: Using Cutting-Edge Genetic Approaches to Develop New Management Tools for the Control of Invasive Phragmites
Predicting risk of annual grass invasion following fire in sagebrush steppe and rangeland ecosystems
The iconic giant saguaro cactus in the Sonoran Desert
Effects of High-Priority Non-Native and Dominant Native Plant Species on the Water Cycle
Multimedia
![USGS Director Applegate and others in a greenhouse next to invasive Phragmites](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/masonry/public/media/images/2022_10_19_StrachRuss_USGS%20%282%29.jpg?itok=QQ73v8WE)
USGS Director David Applegate along with Associate Director Anne Kinsinger and Dr. Kurt Kowalski listen to Dr. Wes Bickford describe invasive Phragmites australis and the research being done at the Great Lakes Science Center to control it. Photo Credit: Josh Miller (USGS)
Sam Droege (fore) arrived from Patuxent with plants for the Conte Lab's new pollinator garden. Sam Parker (back) assists with the planting.
Sam Droege (fore) arrived from Patuxent with plants for the Conte Lab's new pollinator garden. Sam Parker (back) assists with the planting.
![American Beachgrass planted on a beach with the ocean on the right and a hazy sky.](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/masonry/public/media/images/20220505_150342.jpg?itok=KHuufm1p)
American Beachgrass (Ammophila breviligulata) is planted on a beach in the town of Aquinnah on Martha's Vineyard, Massachusetts for stabilization.
American Beachgrass (Ammophila breviligulata) is planted on a beach in the town of Aquinnah on Martha's Vineyard, Massachusetts for stabilization.
A saguaro flowering in the desert near Tucson, AZ. Photo courtesy of Daniel Winkler, USGS, SBSC. Taken in spring, 2022.
A saguaro flowering in the desert near Tucson, AZ. Photo courtesy of Daniel Winkler, USGS, SBSC. Taken in spring, 2022.
A bee visits a saguaro flower near Tucson in Saguaro National Park, southern Arizona. Photo courtesy of Daniel Winkler, USGS SBSC.
A bee visits a saguaro flower near Tucson in Saguaro National Park, southern Arizona. Photo courtesy of Daniel Winkler, USGS SBSC.
Biological carbon sequestration is the natural ability of life and ecosystems to store carbon. Forests, peat marshes, and coastal wetlands are particularly good as storing carbon. Carbon can be stored in plant tissue, such as long-lived tree bark or in extensive root systems. Microbes break down plant and animal tissue through decomposition.
Biological carbon sequestration is the natural ability of life and ecosystems to store carbon. Forests, peat marshes, and coastal wetlands are particularly good as storing carbon. Carbon can be stored in plant tissue, such as long-lived tree bark or in extensive root systems. Microbes break down plant and animal tissue through decomposition.
A basic overview of the nitrogen cycle. Red arrows represent the portions of the nitrogen cycle (decomposition and nitrification) that are performed by our laboratory’s microbial culture.
A basic overview of the nitrogen cycle. Red arrows represent the portions of the nitrogen cycle (decomposition and nitrification) that are performed by our laboratory’s microbial culture.
Thumbnail for "I Am A...Disease Ecologist" whiteboard video.
Thumbnail for "I Am A...Disease Ecologist" whiteboard video.
Tidal freshwater forest transitioning to brackish marsh along the Pamunkey River, Virginia, as low-level salinization kills trees (forming ‘ghost forest’) that are replaced with marsh plants.
Tidal freshwater forest transitioning to brackish marsh along the Pamunkey River, Virginia, as low-level salinization kills trees (forming ‘ghost forest’) that are replaced with marsh plants.
News
Habitat Preferences of Seabeach Amaranth, A Threatened Beach Dependent Plant Species
“Future-Proofing” Freshwater Plants, Animals, and Habitat
Slow, but Steady Improvement: 25 Years of Monitoring Reveals Impacts of the Northwest Forest Plan on Watersheds
The science listed below is a sampling of USGS science on this topic and does not represent an exhaustive list.
Effect of Elodea spp. on Fish Performance Mediated Through Food Web Interactions
These data listed below are a sampling of USGS science on this topic and do not represent an exhaustive list.
The multimedia listed below are a sampling of USGS science on this topic and do not represent an exhaustive list.
![A great white heron standing atop the mangrove roots of Boggy Key, Florida](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/masonry/public/thumbnails/image/mangroves-sofia.jpeg?itok=XzV5_4oW)
A great white heron standing atop the mangrove roots of Boggy Key, in the upper Florida Keys. This heron has a limited range, which includes the Florida Keys and Everglades National Park. It is rarely seen outside of these areas.
A great white heron standing atop the mangrove roots of Boggy Key, in the upper Florida Keys. This heron has a limited range, which includes the Florida Keys and Everglades National Park. It is rarely seen outside of these areas.
Conifers, incluing ponderosa pines, can be seen along the north rim of the Grand Canyon.
Conifers, incluing ponderosa pines, can be seen along the north rim of the Grand Canyon.
While the lavendar color of the Tamarisk plant is nice to see, the plant is actually an invasive species. The Tamarisk Beatle was released in 2005 to combat the spread of the plant and has been quite successful in doing so.
While the lavendar color of the Tamarisk plant is nice to see, the plant is actually an invasive species. The Tamarisk Beatle was released in 2005 to combat the spread of the plant and has been quite successful in doing so.
![Bee pollinating a flowering coastal prairie plant](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/masonry/public/thumbnails/image/allain_bee_study2.jpg?itok=c75IsTSQ)
Bee pollinating a flowering coastal prairie plant
Bee pollinating a flowering coastal prairie plant
USDA Conservation Reserve Program (CRP) field planted for pollinators
USDA Conservation Reserve Program (CRP) field planted for pollinators
Snowy conifers in the Sierra Nevada
Snowy conifers in the Sierra Nevada
Conifers in sagebrush ecosystem, in the Bi-State area between California and Nevada.
Conifers in sagebrush ecosystem, in the Bi-State area between California and Nevada.
A monarch butterfly on a hairy puccoon plant.
A monarch butterfly on a hairy puccoon plant.
Monarch butterfly on a Joe Pyeweed plant.
Monarch butterfly on a Joe Pyeweed plant.
Across the desert Southwest, ground void of plant material is prone to soil erosoin and dust storms. In this fallowed agricultural field, we see that a spring breeze can carry away fertile top soil and create air quality concerns.
Across the desert Southwest, ground void of plant material is prone to soil erosoin and dust storms. In this fallowed agricultural field, we see that a spring breeze can carry away fertile top soil and create air quality concerns.
Researcher swabs the body of a honeybee with fuschin gel to later use to identify the pollen particles on the bee's body and determine what plants the bee visited.
Researcher swabs the body of a honeybee with fuschin gel to later use to identify the pollen particles on the bee's body and determine what plants the bee visited.
Sagebrush-steppe landscapes have changed in fundamental ways over the past 100 years.
Sagebrush-steppe landscapes have changed in fundamental ways over the past 100 years.
Invasive water primrose (Ludwigia species) and water hyacinth (Eichhornia crassipes) line the marsh edge in Mandeville Cut near the Port of Stockton, California’s third largest port. Invasive aquatic vegetation – dominated by Brazilian waterweed, water hyacinth, and water primrose – has increased exponentially in recent years, cloggi
Invasive water primrose (Ludwigia species) and water hyacinth (Eichhornia crassipes) line the marsh edge in Mandeville Cut near the Port of Stockton, California’s third largest port. Invasive aquatic vegetation – dominated by Brazilian waterweed, water hyacinth, and water primrose – has increased exponentially in recent years, cloggi
Native and invasive plants in desert southwest.
Native and invasive plants in desert southwest.
![Riparian planting in the Powell River watershed in Lee County, VA, part of the Lone Mountain NRDAR restoration.](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/masonry/public/thumbnails/image/5_LoneMnt_Tipple_1%20%281%29.jpg?itok=AEzW4gGB)
This is from an economic restoration project. Riparian planting in the Powell River watershed in Lee County, Virginia. Part of the Lone Mountain NRDAR restoration.
This is from an economic restoration project. Riparian planting in the Powell River watershed in Lee County, Virginia. Part of the Lone Mountain NRDAR restoration.
American pika eating plants.
American pika eating plants.
Figure 1. Nitrogen cycles continuously between the atmosphere, soil, and organisms. Nitrogen in the atmosphere and nitrogenous compounds in the soil are converted into substances that can be used by plants before being returned to the air and soil.
Figure 1. Nitrogen cycles continuously between the atmosphere, soil, and organisms. Nitrogen in the atmosphere and nitrogenous compounds in the soil are converted into substances that can be used by plants before being returned to the air and soil.
![Image: Plants Vulnerability to Nitrogen Depends on Where They Grow](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/masonry/public/_DSC0901_PNASmed.jpg?itok=_S3T2Rwo)
A subalpine meadow on Niwot Ridge, Colorado, displaying a rich diversity of plants.
A subalpine meadow on Niwot Ridge, Colorado, displaying a rich diversity of plants.
Koa (Acacia koa) trees with grass understory at Hakalau Forest National Wildlife Refuge, Hawai‘i. Koa trees have been planted as part of habitat restoration efforts on the Refuge.
Koa (Acacia koa) trees with grass understory at Hakalau Forest National Wildlife Refuge, Hawai‘i. Koa trees have been planted as part of habitat restoration efforts on the Refuge.
This green tree frog (Hyla cinerea) sits on the lip of a pitcher plant in a bog in Alabama. The frog was down in the pitcher plant, but moved up to rest on its edge as the photographer approached.
This green tree frog (Hyla cinerea) sits on the lip of a pitcher plant in a bog in Alabama. The frog was down in the pitcher plant, but moved up to rest on its edge as the photographer approached.
Plant community along river.
Plant community along river.
The news below is a sampling of USGS science on this topic and do not represent an exhaustive list.
The FAQs below are a sampling of USGS science on this topic and do not represent an exhaustive list.
What is the Brown Marsh phenomenon?
Sudden marsh dieback events are not uncommon and have occurred in coastal marshes from the Gulf of Mexico to Maine. Brown Marsh is a term given to the unusually rapid and extensive browning of Louisiana’s saltwater marsh grass Spartina alterniflora, commonly known as oyster grass or smooth cordgrass. One of the most severe events occurred in 2000, when over 100,000 hectares (ha) of salt marsh were...
Where would we be without plants? They are the basis of the food chain and producers of oxygen - and so much more. From marsh grasses to mangroves, from sagebrush to sunflowers, getting to the root of the biology and ecology of plants is a critical component of USGS research.
An Integral Part of Life on Earth
Life as we know it wouldn’t be possible without plants. Plants maintain the atmosphere by producing oxygen and absorbing carbon dioxide, help keep our waterways clean, and provide us with food, shelter, and medicine. Plant communities are influenced by soil, terrain, climate, animals, and human activities, so different groups and types of plants are found in different regions of the country. Grassland plants such as the western prairie fringed orchid are found in the Great Plains, while desert plants such as the saguaro cactus are found in the Southwest. Approximately 391,000 species of vascular plants are currently known to science. Explore examples of USGS science on different plant types below.
Science to Support Healthy Ecosystems
Healthy plants are the foundation of healthy ecosystems. In an era of global change, our Nation’s forests, grasslands, wetlands, and other critical habitats are facing multiple threats that challenge our ability to maintain these ecosystems and the species that depend on them. USGS science provides the information needed to address these challenges and support healthy, thriving plant communities across the country.
Threats to Plants
Understanding, monitoring, and predicting threats to plants contributes to the USGS goal of providing science to support the protection, conservation, and enhancement of the Nation’s biodiversity. Through activities such as identifying strategies for controlling invasive cheatgrass, using novel techniques to identify the presence of disease-causing plant pathogens, and informing recovery plans for at-risk species, USGS science is tackling some of the biggest threats facing plants today.
Land Use Change
The single biggest threat facing plants today is habitat loss. Changes in land use, such as the encroachment of agriculture or urban development into areas that were once covered by natural vegetation, reduce plant population sizes and alter the ecosystems that plants, animals, and humans rely on. Changes in land use can cause species extinctions, destabilize soil, increase erosion, and reduce water quality. USGS scientists are monitoring changes in land use to understand how they are affecting the plants and wildlife that depend on them. Explore examples of our science below:
- Monitoring and assessing the effectiveness of habitat management projects in southwest Wyoming, a 19-million-acre region that supports some of the highest quality wildlife habitats in the Intermountain West, as well as agriculture and energy production. Learn more>>
- Identifying the effects of wind turbines and associated infrastructure on vegetation and how wildlife use these landscapes. Learn more>>
- Understanding how agricultural drainage systems affect wetlands in the Prairie Pothole Region. Learn more>>
- Using satellite imagery to monitor changes in vegetation across the country. Learn more>>
Invasive Plants
Every plant and animal species has a native range where it evolved. When a species exists in a location beyond its natural range, it is considered a “non-native” species in that area. When a non-native species establishes in a new habitat, causing harm to the environment or humans, it becomes “invasive”. The annual estimated economic and health-related costs of invasive species in the U.S. have been reported at more than $21 billion and adversely affect every state in the country. Invasive plants represent a major threat to global and local biodiversity while also having negative socio-economic and human health impacts. Invasive plants displace native plants, prevent native plant growth, reduce agricultural production, and induce allergies.
Invasive plants such as cheatgrass and buffelgrass have increased fire vulnerability and diminished grazing value across the western U.S. Aquatic invasive plants such as the weed hydrilla and giant fern salvinia are clogging waterways. To help combat these invaders, USGS scientists are using new tools to model the potential spread of high impact invasive species and to support the early detection and rapid response of invasive species before they are able to spread and cause harm. If an invasive plant is already established, USGS science is helping land managers reverse and mitigate the negative impacts these invasions are causing. Explore examples of our science to understand and reduce the threat of invasive plants below:
- Understanding how invasive plants affect wildfire patterns. Learn more>>
- Developing the Nonindigenous Aquatic Species (NAS) Alert Risk Mapper: A tool to characterize waterbodies at risk of invasion from new non-native species. Learn more>>
- Using Unmanned Aerial Systems (UAS) to track the spread of Salvinia molesta, a non-native aquatic species that reduces light and oxygen levels in water, making it unsuitable for fish and other aquatic life. Learn more>>
- Identifying strategies for controlling invasive cheatgrass in the western U.S. Learn more>>
Visit our Invasive Species webpage to learn more about USGS activities to monitor and respond to the threat of invasive species across the country.
Disease
![Eelgrass Survey in Alaska](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/half_width/public/thumbnails/image/Eelgrass_survey_in_Alaska.jpg?itok=Taf4s54n)
USGS research is addressing numerous diseases in both plants and animals and leading development efforts in advanced tools such as environmental DNA (eDNA) to assist in prevention and early detection. Explore examples of our science on plant diseases and pathogens below:
- Using new environmental DNA (eDNA) methods to identify the presence of pathogens known to cause the decline of eelgrass, which provides important habitat for birds, fish, and invertebrates in southwestern Alaska. Learn more>>
- Deploying a portable lab to speed detection of pathogens responsible for Rapid ‘Ōhi‘a Death (ROD), a rapidly spreading disease affecting a keystone tree species in Hawai’i. Learn more>>
- Using decades of Landsat satellite imagery to map bark beetle outbreaks, which have devastated certain species of evergreen trees in the Rocky Mountains. Learn more>>
Climate Change
Climate helps shape ecosystems. Things like average temperatures, humidity, and rainfall determine where plants and animals lives. If a region’s climate changes, the ecosystem changes as well. Climate change poses one of the biggest threats to plants, leading to an increased spread of invasive species, increased vulnerability to insect pests, the loss of native plant species and changes in their distribution. USGS scientists are leading efforts to understand the current and future impacts of climate change on plants. This information helps management agencies identify adaptation strategies and actions that can help support vulnerable plant species in the face of a changing climate. Explore examples of our science below:
- Monitoring the conversion of tidal freshwater wetlands in the Southeast and mid-Atlantic to “Ghost Forests”—forests in which trees have died due to increases in salinity as sea levels rise and push saltier water upstream. Learn more>>
- Identifying how changes in the amount and timing of precipitation affect big sagebrush in the Great Basin. Learn more>>
- Investigating the effects of drought and warming temperatures on plants in the southwestern U.S. Learn more>>
- Exploring the effects of estimated future sea-level rise on mangrove forests in Micronesia. Learn more>>
- Using satellite data to monitor changes in phenology, or the study of animal and plant life cycles, a powerful tool for understanding life cycle trends and the impacts of climate change on ecosystems. Learn more>>
Species at Risk
As a result of threats such as the spread of invasive species, disease, and climate and land use change, some plant species are in decline or in danger of extinction. The USGS provides management agencies such as the U.S. Fish and Wildlife Agency and National Park Service with scientific information to support conservation decisions for at-risk plant species. Explore examples of our science below:
![Color photograph of scientists](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/half_width/public/thumbnails/image/image2-1451.jpg?itok=JZM2joDs)
![Measuring Evening Primrose](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/half_width/public/thumbnails/image/MeasuringEvenPrimrose_LAD.jpg?itok=Ny9o2PsM)
Ecosystem Restoration
Ecosystem restoration is the act of rehabilitating a degraded or lost ecosystems through activities such as planting native trees and shrubs and controlling invasive species. To do this, land managers need tools to help get the right plants, in the right place, at the right time for successful restoration. The USGS develops strategies and techniques to understand and facilitate the restoration of native species and habitats that have deteriorated due to threats such as invasive species and climate change. Explore examples of our science below:
![A group of land managers gather at a restoration site inside of a desert wash.](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/half_width/public/thumbnails/image/Hopi%20restoration.jpg?itok=iFZTdoXV)
![View of the ocean peeking through a Torrey pine tree](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/half_width/public/thumbnails/image/Day10_TorreyPine_NPS.jpg?itok=zj0MNB9u)
![Graham's beardtongue (Penstemon grahamii)](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/half_width/public/media/images/Graham%27sBeardtongue_Penstemon_grahamii-Book_Cliffs_Uinta_Basin_Utah-DanielWinkler_USGS.jpg?itok=-LPTM09F)
Science
Fostering greater use of habitat models for managing rare and invasive plants on public lands
Invasive Phragmites Science: Using Cutting-Edge Genetic Approaches to Develop New Management Tools for the Control of Invasive Phragmites
Predicting risk of annual grass invasion following fire in sagebrush steppe and rangeland ecosystems
The iconic giant saguaro cactus in the Sonoran Desert
Effects of High-Priority Non-Native and Dominant Native Plant Species on the Water Cycle
Multimedia
![USGS Director Applegate and others in a greenhouse next to invasive Phragmites](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/masonry/public/media/images/2022_10_19_StrachRuss_USGS%20%282%29.jpg?itok=QQ73v8WE)
USGS Director David Applegate along with Associate Director Anne Kinsinger and Dr. Kurt Kowalski listen to Dr. Wes Bickford describe invasive Phragmites australis and the research being done at the Great Lakes Science Center to control it. Photo Credit: Josh Miller (USGS)
USGS Director David Applegate along with Associate Director Anne Kinsinger and Dr. Kurt Kowalski listen to Dr. Wes Bickford describe invasive Phragmites australis and the research being done at the Great Lakes Science Center to control it. Photo Credit: Josh Miller (USGS)
Sam Droege (fore) arrived from Patuxent with plants for the Conte Lab's new pollinator garden. Sam Parker (back) assists with the planting.
Sam Droege (fore) arrived from Patuxent with plants for the Conte Lab's new pollinator garden. Sam Parker (back) assists with the planting.
![American Beachgrass planted on a beach with the ocean on the right and a hazy sky.](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/masonry/public/media/images/20220505_150342.jpg?itok=KHuufm1p)
American Beachgrass (Ammophila breviligulata) is planted on a beach in the town of Aquinnah on Martha's Vineyard, Massachusetts for stabilization.
American Beachgrass (Ammophila breviligulata) is planted on a beach in the town of Aquinnah on Martha's Vineyard, Massachusetts for stabilization.
A saguaro flowering in the desert near Tucson, AZ. Photo courtesy of Daniel Winkler, USGS, SBSC. Taken in spring, 2022.
A saguaro flowering in the desert near Tucson, AZ. Photo courtesy of Daniel Winkler, USGS, SBSC. Taken in spring, 2022.
A bee visits a saguaro flower near Tucson in Saguaro National Park, southern Arizona. Photo courtesy of Daniel Winkler, USGS SBSC.
A bee visits a saguaro flower near Tucson in Saguaro National Park, southern Arizona. Photo courtesy of Daniel Winkler, USGS SBSC.
Biological carbon sequestration is the natural ability of life and ecosystems to store carbon. Forests, peat marshes, and coastal wetlands are particularly good as storing carbon. Carbon can be stored in plant tissue, such as long-lived tree bark or in extensive root systems. Microbes break down plant and animal tissue through decomposition.
Biological carbon sequestration is the natural ability of life and ecosystems to store carbon. Forests, peat marshes, and coastal wetlands are particularly good as storing carbon. Carbon can be stored in plant tissue, such as long-lived tree bark or in extensive root systems. Microbes break down plant and animal tissue through decomposition.
A basic overview of the nitrogen cycle. Red arrows represent the portions of the nitrogen cycle (decomposition and nitrification) that are performed by our laboratory’s microbial culture.
A basic overview of the nitrogen cycle. Red arrows represent the portions of the nitrogen cycle (decomposition and nitrification) that are performed by our laboratory’s microbial culture.
Thumbnail for "I Am A...Disease Ecologist" whiteboard video.
Thumbnail for "I Am A...Disease Ecologist" whiteboard video.
Tidal freshwater forest transitioning to brackish marsh along the Pamunkey River, Virginia, as low-level salinization kills trees (forming ‘ghost forest’) that are replaced with marsh plants.
Tidal freshwater forest transitioning to brackish marsh along the Pamunkey River, Virginia, as low-level salinization kills trees (forming ‘ghost forest’) that are replaced with marsh plants.
News
Habitat Preferences of Seabeach Amaranth, A Threatened Beach Dependent Plant Species
“Future-Proofing” Freshwater Plants, Animals, and Habitat
Slow, but Steady Improvement: 25 Years of Monitoring Reveals Impacts of the Northwest Forest Plan on Watersheds
The science listed below is a sampling of USGS science on this topic and does not represent an exhaustive list.
Effect of Elodea spp. on Fish Performance Mediated Through Food Web Interactions
These data listed below are a sampling of USGS science on this topic and do not represent an exhaustive list.
The multimedia listed below are a sampling of USGS science on this topic and do not represent an exhaustive list.
![A great white heron standing atop the mangrove roots of Boggy Key, Florida](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/masonry/public/thumbnails/image/mangroves-sofia.jpeg?itok=XzV5_4oW)
A great white heron standing atop the mangrove roots of Boggy Key, in the upper Florida Keys. This heron has a limited range, which includes the Florida Keys and Everglades National Park. It is rarely seen outside of these areas.
A great white heron standing atop the mangrove roots of Boggy Key, in the upper Florida Keys. This heron has a limited range, which includes the Florida Keys and Everglades National Park. It is rarely seen outside of these areas.
Conifers, incluing ponderosa pines, can be seen along the north rim of the Grand Canyon.
Conifers, incluing ponderosa pines, can be seen along the north rim of the Grand Canyon.
While the lavendar color of the Tamarisk plant is nice to see, the plant is actually an invasive species. The Tamarisk Beatle was released in 2005 to combat the spread of the plant and has been quite successful in doing so.
While the lavendar color of the Tamarisk plant is nice to see, the plant is actually an invasive species. The Tamarisk Beatle was released in 2005 to combat the spread of the plant and has been quite successful in doing so.
![Bee pollinating a flowering coastal prairie plant](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/masonry/public/thumbnails/image/allain_bee_study2.jpg?itok=c75IsTSQ)
Bee pollinating a flowering coastal prairie plant
Bee pollinating a flowering coastal prairie plant
USDA Conservation Reserve Program (CRP) field planted for pollinators
USDA Conservation Reserve Program (CRP) field planted for pollinators
Snowy conifers in the Sierra Nevada
Snowy conifers in the Sierra Nevada
Conifers in sagebrush ecosystem, in the Bi-State area between California and Nevada.
Conifers in sagebrush ecosystem, in the Bi-State area between California and Nevada.
A monarch butterfly on a hairy puccoon plant.
A monarch butterfly on a hairy puccoon plant.
Monarch butterfly on a Joe Pyeweed plant.
Monarch butterfly on a Joe Pyeweed plant.
Across the desert Southwest, ground void of plant material is prone to soil erosoin and dust storms. In this fallowed agricultural field, we see that a spring breeze can carry away fertile top soil and create air quality concerns.
Across the desert Southwest, ground void of plant material is prone to soil erosoin and dust storms. In this fallowed agricultural field, we see that a spring breeze can carry away fertile top soil and create air quality concerns.
Researcher swabs the body of a honeybee with fuschin gel to later use to identify the pollen particles on the bee's body and determine what plants the bee visited.
Researcher swabs the body of a honeybee with fuschin gel to later use to identify the pollen particles on the bee's body and determine what plants the bee visited.
Sagebrush-steppe landscapes have changed in fundamental ways over the past 100 years.
Sagebrush-steppe landscapes have changed in fundamental ways over the past 100 years.
Invasive water primrose (Ludwigia species) and water hyacinth (Eichhornia crassipes) line the marsh edge in Mandeville Cut near the Port of Stockton, California’s third largest port. Invasive aquatic vegetation – dominated by Brazilian waterweed, water hyacinth, and water primrose – has increased exponentially in recent years, cloggi
Invasive water primrose (Ludwigia species) and water hyacinth (Eichhornia crassipes) line the marsh edge in Mandeville Cut near the Port of Stockton, California’s third largest port. Invasive aquatic vegetation – dominated by Brazilian waterweed, water hyacinth, and water primrose – has increased exponentially in recent years, cloggi
Native and invasive plants in desert southwest.
Native and invasive plants in desert southwest.
![Riparian planting in the Powell River watershed in Lee County, VA, part of the Lone Mountain NRDAR restoration.](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/masonry/public/thumbnails/image/5_LoneMnt_Tipple_1%20%281%29.jpg?itok=AEzW4gGB)
This is from an economic restoration project. Riparian planting in the Powell River watershed in Lee County, Virginia. Part of the Lone Mountain NRDAR restoration.
This is from an economic restoration project. Riparian planting in the Powell River watershed in Lee County, Virginia. Part of the Lone Mountain NRDAR restoration.
American pika eating plants.
American pika eating plants.
Figure 1. Nitrogen cycles continuously between the atmosphere, soil, and organisms. Nitrogen in the atmosphere and nitrogenous compounds in the soil are converted into substances that can be used by plants before being returned to the air and soil.
Figure 1. Nitrogen cycles continuously between the atmosphere, soil, and organisms. Nitrogen in the atmosphere and nitrogenous compounds in the soil are converted into substances that can be used by plants before being returned to the air and soil.
![Image: Plants Vulnerability to Nitrogen Depends on Where They Grow](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/masonry/public/_DSC0901_PNASmed.jpg?itok=_S3T2Rwo)
A subalpine meadow on Niwot Ridge, Colorado, displaying a rich diversity of plants.
A subalpine meadow on Niwot Ridge, Colorado, displaying a rich diversity of plants.
Koa (Acacia koa) trees with grass understory at Hakalau Forest National Wildlife Refuge, Hawai‘i. Koa trees have been planted as part of habitat restoration efforts on the Refuge.
Koa (Acacia koa) trees with grass understory at Hakalau Forest National Wildlife Refuge, Hawai‘i. Koa trees have been planted as part of habitat restoration efforts on the Refuge.
This green tree frog (Hyla cinerea) sits on the lip of a pitcher plant in a bog in Alabama. The frog was down in the pitcher plant, but moved up to rest on its edge as the photographer approached.
This green tree frog (Hyla cinerea) sits on the lip of a pitcher plant in a bog in Alabama. The frog was down in the pitcher plant, but moved up to rest on its edge as the photographer approached.
Plant community along river.
Plant community along river.
The news below is a sampling of USGS science on this topic and do not represent an exhaustive list.
The FAQs below are a sampling of USGS science on this topic and do not represent an exhaustive list.
What is the Brown Marsh phenomenon?
Sudden marsh dieback events are not uncommon and have occurred in coastal marshes from the Gulf of Mexico to Maine. Brown Marsh is a term given to the unusually rapid and extensive browning of Louisiana’s saltwater marsh grass Spartina alterniflora, commonly known as oyster grass or smooth cordgrass. One of the most severe events occurred in 2000, when over 100,000 hectares (ha) of salt marsh were...