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Unraveling the influence of environmental factors on fireweed (Senecio madagascariensis) germination and its management implications Invasive Plant Sci. Manag. (IF 1.1) Pub Date : 2024-03-15 Virender Singh Hooda, Bhagirath Singh Chauhan
Fireweed (Senecio madagascariensis Poir.) has invaded and colonized numerous habitats in the coastal areas of southeastern Australia and is a major weed in cultivated lands as well as in poorly grassed, neglected, and highly grazed pastures. To examine the seed germination ecology of two populations (Felton and Gatton) of S. madagascariensis, experiments were conducted in the laboratory and screenhouse
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Fall or spring aminopyralid applications control Taeniatherum caput-medusae Invasive Plant Sci. Manag. (IF 1.1) Pub Date : 2024-02-29 Lisa C. Jones, Cody Beckley, Corey V. Ransom, Timothy S. Prather
Taeniatherum caput-medusae (L.) Nevski is an invasive winter annual grass of western North American grasslands and rangelands that negatively impacts forage production, wildlife habitat, and ecosystem processes. Growth regulator herbicides, such as aminopyralid, applied in spring reduce invasive annual grass seed viability in greenhouse and California annual grassland experiments. Beginning in fall
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Population structure of three invasive congeneric teasel (Dipsacus) species Invasive Plant Sci. Manag. (IF 1.1) Pub Date : 2024-02-29 John F. Gaskin, Natalie West, Brian G. Rector
Three species of the Old World genus Dipsacus L. are considered invasive in the Americas, yet they may differ in how they spread, reproduce, and in genetic diversity. Differences in invasion method may suggest that different management techniques are needed for each species. We performed genetic analyses on 572 plants in 69 populations from the USA, Argentina, and Eurasia with the goals of analyzing
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Hydrilla verticillata subsp. lithuanica: discovery and establishment outside of the Connecticut River Invasive Plant Sci. Manag. (IF 1.1) Pub Date : 2024-02-16 Jeremiah R. Foley, Summer E. Stebbins, Riley Doherty, Nicholas P. Tippery, Gregory J. Bugbee
Hydrilla [Hydrilla verticillata (L.f.) Royle], an invasive aquatic weed, has had a rich introduction history into the United States with multiple subspecies being introduced since the 1960’s. The most recent occurred prior to 2016, when northern hydrilla (Hydrilla verticillata subsp. lithuanica) was discovered in the Connecticut River. By 2021, following a three-year survey from Agawam, MA to the Long
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Long-term interactive impacts of the invasive shrub Lonicera maackii and white-tailed deer (Odocoileus virginianus) on a deciduous forest understory Invasive Plant Sci. Manag. (IF 1.1) Pub Date : 2024-01-29 Marco U. Donoso, Hanna Leonard, David L. Gorchov
White-tailed deer (Odocoileus virginianus) (hereafter, ‘deer’) and invasive plants affect forest understories, but few studies have investigated their interaction. We investigated long-term (11-yr) effects of excluding deer and removing the invasive shrub, Amur honeysuckle [Lonicera maackii (Rupr.) Herder], on plants in southwest Ohio. Deer exclusion enhanced tree seedling richness and density, but
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Competition reduces structural defense in an invasive thistle in the field Invasive Plant Sci. Manag. (IF 1.1) Pub Date : 2024-01-10 Rachel Lamb, Joseph Keller, Katriona Shea
Invasive thistles reduce the productivity of pastures and rangelands because their structural defenses make them unpalatable to grazing livestock. However, plants potentially alter their growth patterns, including their allocation of resources to defense, in response to the presence of competing vegetation. Understanding the effects of competition on the structural defense of problematic pasture weeds
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Early detection of Youngia japonica (L.) DC. (Asteraceae) in São Miguel Island, Azores, Portugal Invasive Plant Sci. Manag. (IF 1.1) Pub Date : 2024-01-08 Guilherme Roxo, Luís Silva, Lurdes Borges Silva, Rúben Rego, Roberto Resendes, Mónica Moura
Youngia japonica (L.) DC. was recently discovered on the Azorean island of São Miguel. This species is a cosmopolitan herb that has been reported to be invasive in several regions of the world. It is unclear when and how this plant arrived in São Miguel, Azores. Nevertheless, we hypothesize that this is an unintentional and recent introduction. The populations are expanding in São Miguel, and action
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Tourists’ (mis)understandings of nature: international and domestic visitors’ perceptions of invasive alien plants in New Zealand Invasive Plant Sci. Manag. (IF 1.1) Pub Date : 2023-11-24 Brent Lovelock, Yun Ji, Anna Carr, Clara-Jane Blye
Tourism, one of the world largest economic sectors, moves a substantial body of individuals and materials about the world and is implicated in the spread of invasive plants and is itself impacted by biological invasions that can degrade touristic landscapes and affect destination communities. Tourists constitute not only an immediate biological threat, but through their landscape and biota preferences
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Genetic analysis of invasive spread of wintercreeper (Euonymus fortunei), a popular ornamental groundcover Invasive Plant Sci. Manag. (IF 1.1) Pub Date : 2023-11-06 Robert J. Elam, Theresa M. Culley
An important route of introduction of some nonnative species that subsequently become invasive in the United States is through horticulture. One such plant is Euonymus fortunei (Turcz.) Hand.-Maz., commonly known as wintercreeper, an evergreen groundcover with more than 52 different horticultural varieties, which is still sold at many plant nurseries and garden centers in the midwestern United States
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Invasion by Callery pear (Pyrus calleryana) does not affect understory abundance or diversity in early-successional meadows Invasive Plant Sci. Manag. (IF 1.1) Pub Date : 2023-11-06 Andrea N. Nebhut, Jeffrey S. Dukes
Trait differences between invasive plants and the plants in their recipient communities moderate the impact of invaders on community composition. Callery pear (Pyrus calleryana Decne.) is a fast-growing, stress-tolerant tree native to China that has been widely planted for its ornamental value. In recent decades, P. calleryana has naturalized throughout the eastern United States, where it spreads rapidly
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Seed longevity and germination of the emerging invasive species wavyleaf basketgrass (Oplismenus undulatifolius) under varied light regimes Invasive Plant Sci. Manag. (IF 1.1) Pub Date : 2023-11-06 Dominique H. Pham, Carrie A. Wu
Invasive nonindigenous species pose a serious threat to native biodiversity and ecosystem functioning. Understanding how species’ performance varies under conditions in the current and invaded range can help to predict the dynamics of the invading species in its new environment. Plants with the ability to alter growth in response to variation in light conditions may be favored in landscapes that experience
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Novel basal bark and cut stump herbicide treatments for Brazilian peppertree (Schinus terebinthifolia) management Invasive Plant Sci. Manag. (IF 1.1) Pub Date : 2023-11-06 Mackenzie E. Bell, Stephen F. Enloe, James K. Leary, Dwight K. Lauer
Brazilian peppertree (Schinus terebinthifolia Raddi) is an aggressive shrub that infests more than 280,000 ha in Florida. Individual plant treatments (IPT), including basal bark and cut stump application with triclopyr butoxyethylester and triethylamine formulations, respectively, have been used for decades. While they are both effective, resprouting can occur, which requires retreatment for control
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Efficient and rapid control of Eurasian watermilfoil (Myriophyllum spicatum) by combining benthic mats and hand pulling Invasive Plant Sci. Manag. (IF 1.1) Pub Date : 2023-10-20 Vincent Gagné, Claude Lavoie
Eurasian watermilfoil (Myriophyllum spicatum L.) is an aquatic vascular plant that forms extensive dense beds in lakes. This invader competes with native plants, interferes with aquatic activities, and decreases riparian property values. In Canada, the use of aquatic herbicides is highly restricted. Environmental managers must therefore rely on physical methods such as hand pulling or benthic matting
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High-impact invasive plants expanding into mid-Atlantic states: identifying priority range-shifting species for monitoring in light of climate change Invasive Plant Sci. Manag. (IF 1.1) Pub Date : 2023-10-06 Justin D. Salva, Bethany A. Bradley
One way that climate change is projected to affect invasive plant management is by shifting the ranges of invasive plants. In some regions, hundreds of new, potentially invasive species could establish in coming decades. These species are prime candidates for early detection and rapid response. However, with limited resources, it is unlikely that invasive plant managers will be able to monitor and
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Temporal changes in genetic diversity reveal small-scale invasion dynamics of the eastern redcedar (Juniperus virginiana var. virginiana) in the Lakeside Daisy State Nature Preserve in Ohio Invasive Plant Sci. Manag. (IF 1.1) Pub Date : 2023-08-29 Hannah M. Hartman, Oscar J. Rocha
Eastern redcedar (Juniperus virginiana L. var. virginiana; hereafter ERC) is a native species currently invading open areas and grasslands outside of its original range in the United States. We studied ERC’s invasion patterns in the Lakeside Daisy State Nature Preserve (LDSNP), a short grass prairie located on the Marblehead Peninsula in Ohio, examining the changes in the genetic diversity and structure
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A contractor comparison of novel IPT tools and techniques for Brazilian peppertree (Schinus terebinthifolia) management Invasive Plant Sci. Manag. (IF 1.1) Pub Date : 2023-08-18 Mackenzie E. Bell, Stephen F. Enloe, James K. Leary, Dwight K. Lauer
Brazilian peppertree (Schinus terebinthifolia Raddi) is a multistemmed shrub or small tree from South America that is invasive in Florida, Texas, Hawaii, and Australia. It forms multistemmed trunks with spreading branches that create dense thickets. State agencies in Florida manage it at annual costs of over $3 million, and individual plant treatment (IPT) techniques are widely used for control. Recent
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Biology of Invasive Plants 5. Solanum elaeagnifolium Cav. Invasive Plant Sci. Manag. (IF 1.1) Pub Date : 2023-08-14 Alexandros Tataridas, Miguel Moreira, Luciana Frazão, Panagiotis Kanatas, Noboru Ota, Ilias Travlos
The family Solanaceae lists about 1,400 species worldwide, of which 143 are considered weeds (Sheppard et al. 2006). The genus Solanum is the most numerous of the family Solanaceae. Solanum elaeagnifolium Cav. belongs to the clade Leptostemonum, commonly known as the “spiny solanum” clade. Solanum elaeagnifolium is native to northern Mexico and the American Southwest. A revision for the S. elaeagnifolium
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Persistence of triclopyr, dicamba, and picloram in the environment following aerial spraying for control of dense pine invasion Invasive Plant Sci. Manag. (IF 1.1) Pub Date : 2023-08-10 Carol A. Rolando, Matthew B. Scott, Brenda R. Baillie, Fiona Dean, Christine L. Todoroki, Thomas S. H. Paul
Aerial application of an herbicide mixture of triclopyr, dicamba, picloram, and aminopyralid is used to control dense infestations of exotic conifers, notably lodgepole pine (Pinus contorta Douglas ex Loudon), in New Zealand. The rates of herbicide applied to control these tree weeds has the potential for off-target impacts through persistence in the forest floor, soil, and water. Persistence of three
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Simulated mechanical control of Nitellopsis obtusa under mesocosm conditions Invasive Plant Sci. Manag. (IF 1.1) Pub Date : 2023-07-03 Alyssa M. Haram, Ryan M. Wersal
Management efforts to control starry stonewort [Nitellopsis obtusa (Desvaux in Loiseleur) J. Groves] have been limited to stressing the thalli and have not been able to directly target the reproductive bulbils. Smaller-scale efforts such as the use of hand pulling can be employed, but hand pulling is not realistic for larger infestations. This research was conducted to test the effects of clipping
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Morphological traits for rapid and simple separation of native and introduced common reed (Phragmites australis) Invasive Plant Sci. Manag. (IF 1.1) Pub Date : 2023-06-05 Michael J. McTavish, Tyler Smith, Subbaiah Mechanda, Sandy M. Smith, Robert S. Bourchier
Effective management of the introduced invasive grass common reed [Phragmites australis (Cav.) Trin. ex Steud.] requires the ability to differentiate between the introduced and native subspecies found in North America. While genetic tools are useful for discriminating between the subspecies, morphological identification is a useful complementary approach that is low to zero cost and does not require
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Low carrier volume herbicide trials and UAAS support management efforts of giant salvinia (Salvinia molesta): a case study Invasive Plant Sci. Manag. (IF 1.1) Pub Date : 2023-05-18 Andrew W. Howell, Erika J. Haug, Wesley J. Everman, Ramon G. Leon, Robert J. Richardson
Expanding the current aquatic herbicide portfolio, reducing total spray volumes, or remotely delivering herbicide using novel spray technologies could improve management opportunities targeting invasive aquatic plants, where options are more limited. However, research on giant salvinia (Salvinia molesta Mitchell) response to foliar herbicide applications at carrier volumes ≤140 L ha−1 is incomplete
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Sethoxydim performance on torpedograss (Panicum repens) and sand cordgrass (Spartina bakeri) as affected by carrier volume and rate Invasive Plant Sci. Manag. (IF 1.1) Pub Date : 2023-04-20 Benjamin P. Sperry, Stephen F. Enloe, Candice M. Prince, Michael W. Durham
Greenhouse experiments were conducted in 2020 to investigate the effects of carrier volume and sethoxydim rate on torpedograss (Panicum repens L.) control and sand cordgrass (Spartina bakeri Merr.) response from a single application. Panicum repens control and biomass reduction generally increased with increasing sethoxydim rates in evaluations at 14, 28, and 42 d after treatment (DAT); however, increasing
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Effectiveness and cost of a rapid response campaign against Japanese knotweed (Reynoutria japonica) along a Canadian river Invasive Plant Sci. Manag. (IF 1.1) Pub Date : 2023-03-30 Gabriel Rouleau, Marianne Bouchard, Rébecca Matte, Claude Lavoie
Japanese knotweed (Reynoutria japonica Houtt.) is an invasive Asian plant abundant along rivers in its introduced range. In riparian areas, floods and ice flows uproot the rhizomes, facilitating their dissemination downstream. Control of large, well-established R. japonica clones in riparian areas is difficult if the use of herbicides is prohibited. An alternative to controlling entrenched clones is
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Reduced hack and squirt treatment with aminocyclopyrachlor and aminopyralid for invasive shrub control Invasive Plant Sci. Manag. (IF 1.1) Pub Date : 2023-03-09 Stephen F. Enloe, James K. Leary, Cody Lastinger, Dwight K. Lauer
Invasive shrubs often present extremely difficult challenges for individual plant treatment approaches due to multiple basal stems with complex branching patterns. Basal bark and cut stump individual plant treatments have been the standard methods for managing large-statured shrubs, while hack and squirt has been disregarded as operationally too difficult. However, hack and squirt is a more discriminant
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Relationship between local-scale topography and vegetation on the invasive C4 perennial bunchgrass buffelgrass (Pennisetum ciliare) size and reproduction Invasive Plant Sci. Manag. (IF 1.1) Pub Date : 2023-03-02 Katherine A. Hovanes, Aaron M. Lien, Elizabeth Baldwin, Yue M. Li, Kim Franklin, Elise S. Gornish
Buffelgrass [Pennisetum ciliare (L.) Link] is an invasive C4 perennial bunchgrass that is a threat to biodiversity in aridlands in the Americas and Australia. Topography influences P. ciliare occurrence at large spatial scales, but further investigation into the relationship between local-scale topography and P. ciliare growth and reproduction would be beneficial. Further, density-dependent effects
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A ranching economic analysis of ventenata (Ventenata dubia) control in northeast Wyoming Invasive Plant Sci. Manag. (IF 1.1) Pub Date : 2023-02-27 Marshall Hart, John Ritten, Brian A. Mealor
Invasive species pose a threat to the livelihoods of many people living on rangelands of the western United States. Invasive species impact many ecosystem goods and services of the areas they invade and represent one of the largest causes of habitat degradation. On private ranches, economic analyses often find that conservation practices, such as invasive species control, are not economically viable
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Evaluation of novel triclopyr formulations for control of Old World climbing fern (Lygodium microphyllum) Invasive Plant Sci. Manag. (IF 1.1) Pub Date : 2023-02-21 Jonathan S. Glueckert, James J. K. Leary, Stephen F. Enloe
Old World climbing fern [Lygodium microphyllum (Cav.) R. Br] is a smothering vine that has invaded thousands of hectares of wetlands in southern and central Florida, including the Everglades. For more than two decades, the standard management approach in natural areas has been to cut the vines at waist height, leaving climbing rachis to desiccate in the tree canopy (poodle cutting) and subsequently
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Phenologies of Canada thistle (Cirsium arvense) and Cirsium species native to the upper Midwest: implications for the ecological host range of the biocontrol agent Hadroplontus litura Invasive Plant Sci. Manag. (IF 1.1) Pub Date : 2023-01-23 Elizabeth J. Katovich, Roger L. Becker, Erik S. Katovich
Native Cirsium species play an important role in landscapes across North America. Hadroplontus litura (F.) (formerly Ceutorhynchus litura), the stem-mining weevil and biological control agent of Canada thistle [Cirsium arvense (L.) Scop.] can complete its life cycle on five Cirsium species native to the upper Midwest. Although these five Cirsium species are within the fundamental host range of H. litura
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Effectiveness of a decade of treatments to reduce invasive buffelgrass (Pennisetum ciliare) Invasive Plant Sci. Manag. (IF 1.1) Pub Date : 2023-01-23 Yue M. Li, Seth M. Munson, Ya-Ching Lin, Perry Grissom
The invasion of nonnative grasses threatens biodiversity and ecosystem function globally through competition with native plant species and increases to wildfire frequency and intensity. Management actions to reduce buffelgrass [Pennisetum ciliare (L.) Link], an invasive warm-season perennial bunchgrass, are widely implemented, with chemical and mechanical treatments extending over two decades within
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Measuring the success of cross-tenure collaborative weed management: insights codeveloped with practitioners Invasive Plant Sci. Manag. (IF 1.1) Pub Date : 2023-01-23 Sonia Graham, Megan Wyllie, Mel Wilkerson, Michael Williams, Angela Sharp, Hillary Cherry, Paul Martin, Rebecca Campbell, Gina Hawkes
There is limited documentation of cross-tenure collaborative weed management programs, and no consistent set of metrics for evaluating their performance. In this study, 12 weed management practitioners in southeast Australia participated in a qualitative social research project to discuss and document examples of cross-tenure collaborative weed management and critically reflect on whether existing
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Asiatic dayflower (Commelina communis) control in Douglas fir Invasive Plant Sci. Manag. (IF 1.1) Pub Date : 2023-01-09 Jatinder S. Aulakh
Asiatic dayflower (Commelina communis L.) is becoming increasingly invasive in Christmas tree plantations in the U.S. Northeast. Response of C. communis to preemergence or postemergence herbicides was evaluated in separate field and greenhouse experiments. The preemergence herbicides consisted of two application rates of flumioxazin (215 and 429 g ai ha−1), hexazinone plus sulfometuron-methyl (316
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Response of black swallowwort (Vincetoxicum nigrum) to herbicides plus mowing Invasive Plant Sci. Manag. (IF 1.1) Pub Date : 2022-12-20 Lindsey R. Milbrath, Jeromy Biazzo, Scott H. Morris, Antonio DiTommaso
The invasive vine black swallowwort [Vincetoxicum nigrum (L.) Moench = Cynanchum louiseae Kartesz & Gandhi, Apocynaceae] is difficult to control, and herbicide studies are lacking. This long-lived perennial species is primarily found in high-light environments in natural areas and perennial cropping systems in northeastern North America. We conducted a 3-yr herbicide efficacy study, with or without
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Citizen science and land use data provide insight into the invasive riparian plant composition of the Hudson River Valley watershed Invasive Plant Sci. Manag. (IF 1.1) Pub Date : 2022-12-01 Alexis Garretson, Samantha Mohney, Morgan Cahill, Laurel Griffin, Rachel Silarszka, Stream Watch Citizen Scientists Mohonk Preserve, Natalie Feldsine, Megan N. Napoli, Elizabeth C. Long
Invasive plants in the riparian zone can negatively affect the characteristics and quality of a watershed. To support the development of a watershed management plan and foster public appreciation of the value of the riparian zone, Mohonk Preserve established a volunteer monitoring program surveying sites for invasive species. Between 2017 and 2019, citizen scientists repeatedly surveyed 20 sites in
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Herbicide selection for controlling Tahitian bridal veil (Gibasis pellucida) Invasive Plant Sci. Manag. (IF 1.1) Pub Date : 2022-10-24 Ping Yu, S. Christopher Marble, Patrick Minogue
Tahitian bridal veil [Gibasis pellucida (M. Martens & Galeotti) D.R. Hunt], a Central and South America native plant that is often confused with another more well-known invasive plant, small leaf spiderwort (Tradescantia fluminensis Vell.), has become invasive in natural areas throughout Florida. However, very little is known regarding herbicide control or other methods. To begin the process of developing
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Eradication of Commelina benghalensis in a long-term experiment using a multistakeholder governance model: a case of regulatory concerns defeating ecological management success Invasive Plant Sci. Manag. (IF 1.1) Pub Date : 2022-09-12 Ramon G. Leon, Nancy Creamer, S. Chris Reberg-Horton, Alan J. Franzluebbers
Tropical spiderwort (Commelina benghalensis L.) is a noxious invasive species and was detected in a long-term experiment in a research farm in Goldsboro, NC. A multistakeholder governance model was used to address the invasion of this species. Regulators insisted on the use of fumigation in all fields, but after intense negotiations, a multi-tier eradication plan was designed and implemented, allowing
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Susceptibility of native and invasive submersed plants in New Zealand to florpyrauxifen-benzyl in growth chamber exposure studies Invasive Plant Sci. Manag. (IF 1.1) Pub Date : 2022-09-01 Andrew W. Howell, Deborah E. Hofstra, Mark A. Heilman, Robert J. Richardson
Invasive aquatic plants constantly threaten freshwaters and associated environs globally. Water resource managers frequently seek new control tactics to combat invasive macrophytes, especially when the availability of herbicides registered for submersed plant control is limited. The synthetic auxin herbicide, florpyrauxifen-benzyl, recently registered (2018) for aquatic site applications in the United
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Indaziflam reduces downy brome (Bromus tectorum) density and cover five years after treatment in sagebrush-grasslands with no impact on perennial grass cover Invasive Plant Sci. Manag. (IF 1.1) Pub Date : 2022-08-01 Jacob S. Courkamp, Paul J. Meiman, Scott J. Nissen
The invasive annual grass downy brome (Bromus tectorum L.) is a critical threat to the semiarid shrublands that characterize western North America. More abundant fine fuel after invasion typically increases fire frequency in plant communities adapted to relatively infrequent burning, reducing the likelihood of native plant persistence. Currently, imazapic is most often used to manage B. tectorum, but
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Estimating local eradication costs for invasive Miscanthus populations throughout the eastern and midwestern United States Invasive Plant Sci. Manag. (IF 1.1) Pub Date : 2022-07-29 Carolyn J. Lowry, David P. Matlaga, Natalie M. West, Martin M. Williams, Adam S. Davis
Several Miscanthus species are cultivated in the U.S. Midwest and Northeast, and feral populations can displace the native plant community and potentially negatively affect ecosystem processes. The monetary cost of eradicating feral Miscanthus populations is unknown, but quantifying eradication costs will inform decisions on whether eradication is a feasible goal and should be considered when totaling
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Improving chemical control of nonnative aquatic plants in run-of-the-river reservoirs Invasive Plant Sci. Manag. (IF 1.1) Pub Date : 2022-07-14 Ryan M. Wersal, Bradley T. Sartain, Kurt D. Getsinger, John D. Madsen, John G. Skogerboe, Justin J. Nawrocki, Rob J. Richardson, Morgan R. Sternberg
Current dam discharge patterns in Noxon Rapids Reservoir reduce concentration and exposure times (CET) of herbicides used for aquatic plant management. Herbicide applications during periods of low dam discharge may increase herbicide CETs and improve efficacy. Applications of rhodamine WT dye were monitored under peak (736 to 765 m3 s−1) and minimum (1.4 to 2.8 m3 s−1) dam discharge patterns to quantify
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Vernalization required to induce flowering in rosettes of garlic mustard (Alliaria petiolata) Invasive Plant Sci. Manag. (IF 1.1) Pub Date : 2022-07-14 Elizabeth J. Katovich, Erik S. Katovich, Roger L. Becker
Garlic mustard [Alliaria petiolata (M. Bieb.) Cavara & Grande] is an invasive Brassicaceae species native to Europe. As obligate biennials, A. petiolata rosettes require a sufficient length of cold during the winter to flower the following spring. As such, mild winter temperatures could limit the species’ potential western and southern distribution in North America. The goal of this research was to
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Influence of institutional arrangements on invasive plant species management from multilevel perspectives: a case study in Vietnam’s national parks Invasive Plant Sci. Manag. (IF 1.1) Pub Date : 2022-06-27 Tuyet T. A. Truong, Margaret E. Andrew, Giles E. St. J. Hardy, Bernard Dell, Michael Hughes
Invasive plant species (IPS) management in national parks is a complex problem often characterized by the involvement of various organizations with different responsibilities, legal mandates, and jurisdictions. These institutional arrangements shape the structure, function, and decision-making behaviors of organizations and influence management effectiveness. Drawing on institutional theory, this study
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Identifying the geographic origins of invasive Megathyrsus maximus in the United States using molecular data Invasive Plant Sci. Manag. (IF 1.1) Pub Date : 2022-05-19 John F. Gaskin, John A. Goolsby, Marie-Claude Bon, Massimo Cristofaro, Paul-André Calatayud
Megathyrsus maximus is nonnative in the neotropics, with a tall form that is commonly used as a forage grass and a smaller-statured form that is considered invasive in south Texas, USA. Biological control researchers are challenged to find an agent that will attack the short form, but not the desirable tall form in other parts of the neotropics. We conducted molecular analyses on 155 Megathyrsus maximus
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The effect of a novel herbicide adjuvant in treating Amur honeysuckle (Lonicera maackii) Invasive Plant Sci. Manag. (IF 1.1) Pub Date : 2022-05-12 Benjamin J. Rivera, Richard Meilan, Michael E. Scharf, Rucha A Karve, Michael A. Jenkins
Invasive woody perennials pose an immense threat to the diversity and function of many ecosystems, including forests in the eastern United States. While herbicide treatments have proven effective in controlling many plant invasions, there is considerable interest in the refinement of herbicide prescriptions to improve efficacy and prevent non-target damage. Adjuvants are widely utilized to improve
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Aboveground native plant biomass reduces Potentilla recta growth: the role of a productive native plant community to mitigate reinvasion from the seedbank of invaded northern intermountain grasslands Invasive Plant Sci. Manag. (IF 1.1) Pub Date : 2022-04-11 Myra Juckers, Marc L. Roozendaal, Katherine J. Stewart
Sulphur cinquefoil (Potentilla recta L.) is an invasive plant of concern within grasslands in western North America. To better understand the role of native plant communities and soil seedbank in P. recta invasion within grasslands, we conducted two greenhouse studies to examine (1) P. recta growth response when grown with and without fertilizer in established native plant communities of varying functional
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Prescribed burning followed by indaziflam enhances downy brome (Bromus tectorum) control Invasive Plant Sci. Manag. (IF 1.1) Pub Date : 2022-04-06 Rachel H. Seedorf, Shannon L. Clark, Scott J. Nissen
Downy brome (Bromus tectorum L.) is a highly invasive winter annual grass that can fill open niches in native plant communities. Prescribed burning is often used to control B. tectorum and can be combined with herbicide treatments to extend the duration of control and promote the native plant community. Several herbicides have been evaluated in conjunction with burning for B. tectorum control, although
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Russian thistle (Salsola spp.) control in California rangelands over five years Invasive Plant Sci. Manag. (IF 1.1) Pub Date : 2022-03-21 Devii R. Rao, Katherine Hovanes, Richard Smith, Josh Davy, Elise S. Gornish
Russian thistle, also known as tumbleweed (Salsola spp.), is a problematic invasive plant found on natural and working landscapes. On a California rangeland, we tested the singular and interactive treatments of grazing, herbicide, and seeding to determine how these approaches might influence Salsola cover across a 5-yr experiment. Total Salsola cover declined by 3% annually during the study. A single
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Creating informed consumers of aquatic invasive species management programs through online education for nonprofessionals Invasive Plant Sci. Manag. (IF 1.1) Pub Date : 2022-03-17 Megan M. Weber, Daniel J. Larkin, Patrick Mulcahy
There are limited educational opportunities regarding aquatic invasive species (AIS) management that target laypersons. This is a significant gap, particularly as nonprofessionals are often tasked with making decisions about whether and how to pursue AIS control efforts, for example, through their roles in community lake associations. Thus, there is a need for educational programs to help consumers
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Crown area predicts total biomass for Rhodomyrtus tomentosa, an invasive shrub in Florida Invasive Plant Sci. Manag. (IF 1.1) Pub Date : 2022-03-15 Melissa C. Smith, Paul D. Pratt, Min B. Rayamahji
Predictive models of aboveground plant biomass derived from nondestructive measurements greatly assist in monitoring and surveying natural areas. Where invasive species are concerned, these models can provide insights to the impacts of invasions and efficacy of management strategies. Furthermore, tools that facilitate a rapid inventory allow for multiple assessments of impact over larger areas. Downy
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Development of a growing degree-day model to estimate Linaria vulgaris shoot emergence and prospects for improving biological control efforts Invasive Plant Sci. Manag. (IF 1.1) Pub Date : 2022-03-10 Suzanne Blatt, Rosemarie De Clerck-Floate, Scott N. White
Yellow toadflax (Linaria vulgaris Mill.; Scrophulariaceae) is an invasive herbaceous perennial weed of agricultural and natural habitats throughout North America. In pastures or native rangelands, use of biological control is an attractive option, particularly if the agent can be established quickly. Rhinusa pilosa (Gyllenhal) (Coleoptera: Curculionidae), a stem-galling weevil, was first released in
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Low rate of aminopyralid nearly eliminates viable seed production in barb goatgrass (Aegilops triuncialis) in the greenhouse Invasive Plant Sci. Manag. (IF 1.1) Pub Date : 2022-03-07 Matthew J. Rinella, Susan E. Bellows, Pamela A. Beitz
Invasive annual grasses such as medusahead [Taeniatherum caput-medusae (L.) Nevski] and barb goatgrass (Aegilops triuncialis L.) are negatively impacting grasslands of the western United States. Over the last decade, research has shown that aminopyralid and other growth-regulator herbicides applied just before flowering greatly reduce viable seed production in several invasive annual grasses. Moreover
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Editorial for Invasive Plant Science and Management, Volume 15 Invasive Plant Sci. Manag. (IF 1.1) Pub Date : 2022-03-01 Antonio DiTommaso
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Suppression of Potentilla recta by targeted goat grazing and aminopyralid on northern intermountain rangelands Invasive Plant Sci. Manag. (IF 1.1) Pub Date : 2022-02-28 Myra Juckers, Katherine J. Stewart
Sulphur cinquefoil (Potentilla recta L.) is an invasive perennial forb threatening rangelands in western North America. To identify best management strategies to control P. recta, we examined targeted goat (Capra hircus L.) grazing conducted once (pre-flowering) versus twice (pre-flowering and flowering and seed set), aminopyralid application, and integrated targeted grazing and aminopyralid as management
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Hybridization and invasiveness in Eurasian watermilfoil (Myriophyllum spicatum): is prioritizing hybrids in management justified? Invasive Plant Sci. Manag. (IF 1.1) Pub Date : 2022-02-02 Hannah K. Hoff, Ryan A. Thum
Hybridization can play an important role in the evolution of invasiveness. Eurasian watermilfoil (Myriophyllum spicatum L.) is a widespread aquatic invasive plant species that hybridizes with native northern watermilfoil (Myriophyllum sibiricum Kom.). Previous studies have found mixed evidence for whether hybrid watermilfoil (Myriophyllum spicatum × sibiricum) and pure M. spicatum differ in vegetative
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Miscanthus × giganteus growth and control in simulated upland and wetland habitats Invasive Plant Sci. Manag. (IF 1.1) Pub Date : 2022-01-21 Gray Turnage, John D. Byrd, John D. Madsen
Globally, giant miscanthus (Miscanthus × giganteus J.M. Greef & Deuter ex Hodkinson & Renvoize [sacchariflorus × sinensis]) is used as a biofuel crop due to its ability to persist in a wide range of climates. However, little work has assessed this plant’s ability to invade and persist in wetland habitats. In outdoor mesocosms, we examined M. × giganteus’s ability to grow in simulated wetland versus
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Pollinator-friendly flora in rangelands following control of cheatgrass (Bromus tectorum): a case study Invasive Plant Sci. Manag. (IF 1.1) Pub Date : 2021-12-27 Arathi H. S., Janet Hardin
Invasive winter annual grasses, such as cheatgrass (Bromus tectorum L.) are considered serious threats to regional biodiversity. Pollinator populations that depend on the native flora are likely to be negatively impacted as these native species may be displaced by the invasive grass species. Colonization by cheatgrass is also predicted to increase risk of wildfires, as dead plant parts provide fuel
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Incorporating rainy season and reproductive phenology into the survival and transition rates of the invasive species Sambucus nigra: an approximation with multistate models Invasive Plant Sci. Manag. (IF 1.1) Pub Date : 2021-12-23 Leticia Bonilla-Valencia, Mariana Hernández-Apolinar, J. Jaime Zúñiga-Vega, Francisco J. Espinosa-García, Yuriana Martínez-Orea, Silvia Castillo-Argüero
Although it has been demonstrated that environmental changes within a year can affect the reproduction, survival, and growth of invasive species, these factors have rarely been incorporated into demographic analyses. Therefore, we applied multistate demographic models (based on capture–recapture animal methods accounting for imperfect detectability of individuals in natural conditions) to evaluate
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Comparison of visual estimation and line-point intercept vegetation survey methods on annual grass–invaded rangelands of Wyoming Invasive Plant Sci. Manag. (IF 1.1) Pub Date : 2021-12-16 Andrea De Stefano, Beth Fowers, Brian A. Mealor
Scientists and natural resource managers require suitable vegetation survey methods to assess the success of rangeland restoration projects. Visual estimation and point intercept methods are commonly used to evaluate vegetation cover. This study compared the performance of one visual (quadrat-based) and two line-point intercept (LPI, canopy and basal) methods to assess biodiversity and cover and to
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Noxious weed views and behaviors in Montana after 25 years of public education Invasive Plant Sci. Manag. (IF 1.1) Pub Date : 2021-12-03 Jane M. Mangold, Shantell A. Frame-Martin, Eric D. Raile
In 1994, a general population survey was conducted to evaluate Montanans’ knowledge about noxious weeds, and results from that survey launched an ongoing statewide education campaign. In 2019, we conducted another general population survey to assess the views and behaviors of Montanans as they relate to noxious weeds and to identify new approaches for disseminating noxious weed information. We also
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Southern blight of perennial swallowwort (Vincetoxicum spp.) in New York Invasive Plant Sci. Manag. (IF 1.1) Pub Date : 2021-11-22 Sarah J. Pethybridge, Sean Murphy, Sandeep Sharma, Jeromy Biazzo, Lindsey R. Milbrath
Pale swallowwort [Vincetoxicum rossicum (Kleopow) Barbar.; syn.: Cynanchum rossicum (Kleopow) Borhidi] and black swallowwort [Vincetoxicum nigrum (L.) Moench; syn.: Cynanchum louiseae Kartesz & Gandhi] are invasive perennial viny milkweeds that have become prevalent across natural and managed habitats in northeastern North America. Southern blight of V. rossicum caused by the fungus Athelia rolfsii
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Output variation of trigger-pump sprayers used for individual plant treatments Invasive Plant Sci. Manag. (IF 1.1) Pub Date : 2021-10-28 Stephen F. Enloe, James K. Leary, Kenzie Bell, Dwight K. Lauer
Individual plant treatment (IPT) techniques (e.g., basal bark, cut stump, hack and squirt) are used for woody invasive plant management and often rely on small trigger-pump spray bottles as an economical and efficient way to deliver a herbicide to the target species. Worldwide, plastic suppliers produce many models and designs with a wide range of uses, including pesticide application. However, spray