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Invasive Plants

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.

Filter Total Items: 7

Invasive Phragmites Science: Management Tools for the Control of Invasive Phragmites to Foster the Restoration of the Great Lakes

The USGS is developing innovative Phragmites control measures to keep this rapidly spreading invasive plant from further expanding its range into new wetland habitats and to aid in the development of successful restoration strategies. Scientists are conducting studies and field tests to determine if fungi that live within the Phragmites are enabling the plant to take over habitat used by native...
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Invasive Phragmites Science: Management Tools for the Control of Invasive Phragmites to Foster the Restoration of the Great Lakes

The USGS is developing innovative Phragmites control measures to keep this rapidly spreading invasive plant from further expanding its range into new wetland habitats and to aid in the development of successful restoration strategies. Scientists are conducting studies and field tests to determine if fungi that live within the Phragmites are enabling the plant to take over habitat used by native...
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Invasive Phragmites Science: Great Lakes Phragmites Collaborative

Addressing a large-scale regional issue such as controlling a persistent invasive plant like Phragmites requires broad cross-sector coordination. Little progress is made and cost efficiencies are reduced when each entity works independently. The highly successful Great Lakes Phragmites Collaborative builds collaboration and facilitates communication on a regional level with a common agenda and...
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Invasive Phragmites Science: Great Lakes Phragmites Collaborative

Addressing a large-scale regional issue such as controlling a persistent invasive plant like Phragmites requires broad cross-sector coordination. Little progress is made and cost efficiencies are reduced when each entity works independently. The highly successful Great Lakes Phragmites Collaborative builds collaboration and facilitates communication on a regional level with a common agenda and...
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Invasive Plants and Fire

Fire has had a very different influence on the forests and shrublands of California. Unlike the case in many forests where fires have been excluded for over a century, shrublands throughout the state have experienced the opposite impact. Invasive grasses that burn more readily than native plants have increased the frequency of wildfires in southern California shrublands. As fire clears swathes of...
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Invasive Plants and Fire

Fire has had a very different influence on the forests and shrublands of California. Unlike the case in many forests where fires have been excluded for over a century, shrublands throughout the state have experienced the opposite impact. Invasive grasses that burn more readily than native plants have increased the frequency of wildfires in southern California shrublands. As fire clears swathes of...
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Occurrence, fate, transport, and ecological effects of aerially applied herbicides in the effort to control invasive buffelgrass (Pennisetum ciliare syn. Cenchrus ciliaris) in Saguaro National Park

The Sonoran Desert lands that the Saguaro National Park (SAGU) has been tasked to protect are facing an unprecedented threat from buffelgrass (Cenhrus ciliaris), an invasive perennial grass that was added to Arizona’s noxious weed list in 2005. The buffelgrass invasion has been so pervasive that the U.S. Department of Interior issued a declaration in 2010 which highlighted a need for a “war on...
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Occurrence, fate, transport, and ecological effects of aerially applied herbicides in the effort to control invasive buffelgrass (Pennisetum ciliare syn. Cenchrus ciliaris) in Saguaro National Park

The Sonoran Desert lands that the Saguaro National Park (SAGU) has been tasked to protect are facing an unprecedented threat from buffelgrass (Cenhrus ciliaris), an invasive perennial grass that was added to Arizona’s noxious weed list in 2005. The buffelgrass invasion has been so pervasive that the U.S. Department of Interior issued a declaration in 2010 which highlighted a need for a “war on...
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Effects of Nonnative Vegetation Management

The Rio Grande/Rio Bravo (hereafter referred to as the Rio Grande) in the Big Bend region of Texas, USA, and Chihuahua, and Coahuila, MX has substantially narrowed since the early 1900s. This narrowing has been exacerbated by the widespread establishment of non-native giant cane (Arundo donax) and tamarisk (Tamarix spp.), both of which help trap sediment and protect banks from natural erosional...
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Effects of Nonnative Vegetation Management

The Rio Grande/Rio Bravo (hereafter referred to as the Rio Grande) in the Big Bend region of Texas, USA, and Chihuahua, and Coahuila, MX has substantially narrowed since the early 1900s. This narrowing has been exacerbated by the widespread establishment of non-native giant cane (Arundo donax) and tamarisk (Tamarix spp.), both of which help trap sediment and protect banks from natural erosional...
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Erosion and Invasive Saltcedar

Formation of arroyos in the late 1800s greatly increased erosion across the southwestern United States. Since the 1930s, however, this erosion has decreased, partly because of bank stabilization by introduced saltcedar. With Isleta Pueblo Indian Nation, the Aquatic Systems Branch developed a new sediment dating method using saltcedar tree rings. We applied the method in a landmark study of arroyo...
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Erosion and Invasive Saltcedar

Formation of arroyos in the late 1800s greatly increased erosion across the southwestern United States. Since the 1930s, however, this erosion has decreased, partly because of bank stabilization by introduced saltcedar. With Isleta Pueblo Indian Nation, the Aquatic Systems Branch developed a new sediment dating method using saltcedar tree rings. We applied the method in a landmark study of arroyo...
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An investigation of aquatic invasive species in pristine sites in the Greater Yellowstone Area

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

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