Articles tagged with Invasive Plants
Researchers discovered supergenes that enabled ragweed to colonize large parts of Europe, changing characteristics such as size and flowering timing to produce highly allergenic pollen. The study highlights the importance of genetic analysis in understanding invasive species' evolution and spread.
A UH-led research team has developed a cost-effective method for removing harmful chemicals and heavy metals from coastal waters by utilizing native aquatic plants. The system, which includes floating aquatic plants and synthetic mats, can help restore ecological balance and keep communities healthy.
A Swansea University research study has evaluated the long-term environmental impacts of different Japanese knotweed management methods. The study found that glyphosate-based foliar spray control is the most sustainable approach, using the least materials and having the lowest economic costs.
Guinea grass, an invasive species in Texas, uses a combination of crowding and chemical toxins to suppress native plants. The researchers found that the toxicity of guinea grass increases dramatically when its shading effect is combined with its chemical warfare, making it harder for native plants to survive.
A new study reveals that alien plant species are expanding their range to higher elevations at an accelerated rate, affecting mountain ecosystems globally. The number of invasive species has increased by 16% worldwide over the past decade, with neophytes colonizing niches that match their climatic preferences.
Researchers conducted a three-year field study to determine how black swallowwort responds to common controls. The study found that annual applications of glyphosate were effective in reducing aboveground biomass, but less effective in reducing cover and stem densities.
A UConn researcher has compiled a comprehensive database of invasive plant species in Central America, revealing that over 60% have been introduced for ornamental purposes. The study highlights the urgent need for action against tropical invasions, which threaten biodiversity, ecosystems, and human health.
Researchers identified six key determinants of establishment success and proposed a general quantitative framework for post-LDD establishment. The framework aims to provide a theoretical basis for studying colonization after LDD and assessing species invasion risk.
A new study from UMass Amherst identifies over 3,000 invasive plant species, but estimates suggest there could be up to 4,721 more, emphasizing the need for a comprehensive global list. The research highlights the importance of floristic surveys in understudied regions to fill knowledge gaps.
A new study by University of Illinois researchers estimates the costs of removing invasive Miscanthus plants, ranging from $85 to $3,316 per site. The study's findings provide valuable insights into the challenges of eradication and highlight the need for accurate research and planning.
Invasive alien species threaten EU biodiversity, causing harm to wildlife, crops, and human health. The new awareness campaign urges people to 'Beware of Aliens' and report sightings to prevent their spread.
A recent study found that cattle grazing with virtual fencing can create effective wildfire fuel breaks on sagebrush landscapes, reducing the risk of devastating wildfires. The technology uses collars to communicate with GPS and reception towers, forming a virtual fence to manage livestock distribution.
New research finds that purple needlegrass thrives in areas with sheep grazing, especially during wet weather, creating space for new growth and reducing competition from non-native grasses. The study's findings aim to inform effective management strategies for this long-lived species and its potential role in mitigating climate change.
A new genus and species of algae called Protocodium sinense has been discovered in China, providing new insight into the early diversification of the plant kingdom. The fossils are remarkably modern-looking and suggest that green algae were already established in shallow waters as carbon dioxide recyclers and oxygen producers before th...
A study on common ragweed found that its gene adaptation is key to its successful invasion of Europe. The plant's ability to resist local pathogens and hybridize with other species has allowed it to outcompete native species.
Researchers found that soil microbiota facilitates the growth of invasive garden lupine and provides defense against herbivores. The plants grown with natural soil microbes produced compounds that deter snails, while those with reduced microbiota showed no such effect.
Pairing prescribed burning with the residual herbicide indaziflam provides better control of downy brome than either method used alone. Burning stimulates native species and impedes emergence of new seedlings, while indaziflam helps maintain plant community diversity.
Pollen from ragweed plants in different regions exhibits varying levels of aggression, influencing allergic reactions. Climate change is projected to increase ragweed allergy cases to 77 million by 2060.
Researchers at Radboud University found that using Phoslock can reduce methane emissions by up to 74% and dredging by approximately 52%. These methods target eutrophication, a key driver of methane production in lakes.
A decline in botany education is hindering environmental improvements and exacerbating climate crises. Basic plant identification skills are lacking among scientists and professionals.
A new survey found dozens of non-native invasive species thriving in southwest Ohio's woods, including Amur honeysuckle, which is crowding out native plants. The study highlights the dangers of introduced species, such as allelopathy and fungal diseases that can wipe out native trees.
A new study published in the Proceedings of the National Academy of Sciences found that the ecological impact of invasive species alone is comparable to its combined effect with warming temperatures, drought, or nitrogen deposition. This suggests that managing invasive species at a local level can make ecosystems more climate resilient.
Great Salt Lake wetland plants can accumulate hazardous metal pollution, which can be passed up the food chain to herbivorous insects. This study found high concentrations of lead, mercury, and other metals in plant tissues, threatening terrestrial ecosystems.
Researchers at Colorado State University are developing an RNA-based method for controlling herbicide-resistant weeds using gene-silencing technology. The goal is to create a non-genetically modified, shelf-stable spray that targets specific strands of RNA in weed cells, leaving crops untouched.
A review of invasive alien species reporting apps for citizen science identified key features and areas for improvement. The study emphasizes the importance of user-friendly apps with gamification, AI-powered photo identification, and coordination among developers to enhance public participation and data management.
A CABI-led study has ranked nearly 200 potentially harmful invasive alien plant species in Ghana that could have a detrimental impact on agriculture, forestry, and biodiversity. The top-ranked arthropod and pathogenic species include the pink hibiscus mealybug, melon thrips, cassava brown streak virus, and maize lethal necrosis disease.
A new UF study found that climate change intensifies the negative effects of invasive plants on longleaf pine trees, making them more vulnerable to drought and wildfires. The experiment showed that trees under stress from both drought and invasive cogongrass were least likely to survive after fire.
Researchers found that global databases revealed a net loss of regional floristic uniqueness due to the spread of alien plants. The study highlighted biogeographic factors like climate distance and anthropogenic factors such as shared administrative history contributing to homogenization of regional floras.
A global dataset of over 200,000 plant species shows that human activity is the biggest driver of homogenization of plant communities. Non-native invasive plants naturalized by humans are the strongest contributor to biotic homogenization.
Dr. Cynthia Smith, an associate professor at George Mason University, will receive $23,119 in funding to manage an invasive plant removal project. The project aims to inform public lands and wetland managers on best practices for invasive species removal.
Researchers found that invasive shrubs absorb more sunlight and lower air temperatures on the forest floor, giving them a competitive advantage. This phenomenon may explain why invasive plants negatively impact bees, butterflies, and amphibians in forest understories.
A new study reveals that 1,330 nurseries and retailers sell hundreds of invasive plant species, including 20 illegal ones. Regional regulation and outreach are needed to reduce their spread.
A new analysis reveals that deliberate or accidental introductions of invasive species have cost Australia AUD$389.59 billion over the last 60 years. The most costly individual species was feral cats, while the management of invasive plants proved to be the worst offender, costing US$151.68 billion.
Research from Utah State University finds that large trees in western forests benefit from mycorrhizal connections to fungi, which enhance nutrient uptake and provide defense against pathogens. Diverse forest networks offer greater protection for these giant trees.
States have inconsistent regulations, making it difficult to control invasive plants. Prohibited plant lists can prevent intentional introductions, but states are not creating these lists proactively. Communication is key to success.
Researchers identified 22 invasive plants threatening native species in New England, while 16 also impact agriculture, human health, or the economy. Home gardeners' access to these high-risk species can accelerate their introduction, highlighting the need for proactive management and regulation.
A recent study assesses the invasiveness of European and native plant species using three dimensions: local abundance, geographic extent, and habitat breadth. High values in these variables characterize successful invaders, with early introduction to Europe and rapid growth contributing to their success.
Research reveals that high-traffic roads contribute to the rapid spread of common ragweed by facilitating seed dispersal through vehicles and maintenance activities, even in less favorable habitats. This finding has practical implications for managing and controlling roadside populations.
A global study has revealed that aquatic invasive species have caused significant economic losses, with an estimated $345 billion in damages since the 1970s. The study found that the largest costs were reported in North America and Asia, mainly due to damage to infrastructures, fisheries, and healthcare systems.
A new study has introduced 13 previously undiscovered species of sparkly moths from Hawaii, highlighting the island's unique biodiversity. The moths are threatened due to shrinking habitats, disease, and invasive species, with some species facing extinction.
A study by James Cook University found that invasive plants rapidly adapt to new regions, growing and reproducing faster in tropical environments. This trend suggests that global warming will increase invasive impacts in these areas.
A 13-year study in Florida found that biological controls significantly reduced the size of new paperbark tree populations after wildfires. The treatments helped to slow growth and inhibit reproduction, allowing land managers to prioritize removing large trees.
A recent study published in Invasive Plant Science and Management found that genetic diversity among alligatorweed populations affects their response to control measures. The research team identified six genetic variations of the plant, including those responding differently to herbicides and biological controls.
Researchers found that cycad trees exhibit sex differences in growth rate and that garden-grown plants grow faster than those in natural habitats. The study's findings inform conservation decisions for threatened species like Cycas micronesica, which faces significant losses due to invasive insect herbivores.
The journal Invasive Plant Science and Management has launched a new series on the biology of invasive plants, focusing on emerging threats such as Pyrachantha augustifolia. The series aims to provide practical recommendations for intervening with invasive plant species and alerting biosecurity managers.
Researchers at Nara Institute of Science and Technology found that parasitic plants use ethylene signaling to mediate host invasion. The study identified mutants with defective ethylene signaling, revealing the importance of ethylene in parasitism.
Researchers report a successful restoration of an ancient oak woodland in Illinois, with native plant biodiversity comparable to best remnant woodlands. The team's efforts focused on rooting up invasive plants, periodically burning, seeding native plants and culling deer, achieving a level of success rare in restoration ecology.
A University of Cincinnati biologist collaborated with Spring Grove Cemetery and Arboretum to replace non-native English ivy with native ground cover on E. Lucy Braun's grave. The tribute features a mix of creeping mint, golden star, and Allegheny spurge, all native to deciduous forests in Eastern North America.
A region-wide study by Penn State researchers confirms that invasive shrubs have an advantage over native shrubs, contributing to their proliferation. The study found that invasive shrubs maintain leaves for 77 days longer than native shrubs, giving them a competitive edge in acquiring energy and creating shade.
A long-term study on cycads in Guam reveals that plant size and habitat traits significantly impact their mortality rate due to invasive species. The research found that larger plants with substantial stored resources are more likely to survive, while smaller plants and those in fragmented forests are more susceptible to damage.
The study explores the impact of invasive grasses on South Texas landscapes, revealing their spread across diverse ecoregions. Remote sensing technologies and AI are being used to detect and manage these invasive species, which also affect native tanglehead grass.
A new biocontrol agent, Dactylopius opuntiae 'stricta' biotype, has been found to be the most cost-effective method for controlling the invasive Opuntia stricta in Laikipia County, Kenya. This approach has shown significant reduction in the number of cladodes, flowers, and fruit of affected plants.
Research found that the physical characteristics of charismatic invasive species, such as body size and coloration, contribute to their appeal and can lead to increased human interaction and difficulty in management. Conversely, other species that are considered problematic may be viewed less favorably due to cultural perceptions.
A two-year study found that 96% of bird feed mixes contained seeds from pigweed species weeds, which can represent a significant threat to agriculture. Researchers also discovered resistance to glyphosate in Palmer amaranth and waterhemp seeds in some mixes.
Researchers at Binghamton University found that road salt and invasive species can harm native amphibians, with non-native African clawed frogs showing greater tolerance to chemical changes. This study highlights the need for better environmental management strategies to protect natural ecosystems.
Some native plant species can grow aggressively, outcompeting other native species and forming dense monocultures, resulting in ecosystem disruptions. Excessive growth of aquatic plants can inhibit water movement and negatively impact flood control operations.
Researchers developed a global database to predict invasive plant populations, finding that species from disturbed environments are more likely to become invasive. The study suggests avoiding the export of these species, which can cause harm to people, industry, and wildlife worldwide.
A literature review found five woody species native to Oklahoma that have become invasive in other regions, causing harm to biodiversity. The study suggests prioritizing conservation efforts based on a species' benefits or harm to the environment.
The Plants-3D program will provide academic and entrepreneurial training to 50 students, equipping them with cutting-edge technologies to increase crop yields and nutritional value. The synthetic biology approach will enable plants to tolerate increased stress levels, reducing the need for fertilizer.
A recent study suggests that BRICS countries can curb the spread of invasive species by forming networks of researchers dedicated to invasion science. The study proposes a 'facilitated' network model that would allow for rapid responses to emerging alien species and substantial increases in capacity to tackle existing invasions.