Interaction between Ailanthus altissima and Native Robinia pseudoacacia in Early Succession: Implications for Forest Management

The study looked at interactions between an exotic invader, tree-of-heaven (Ailanthus altissima), and coexisting black locust (Robinia pseudoacacia) and management implications. The study occurred in the Mid-Appalachian region of the eastern United States where black locust is native. Results showed that in early successional sites, tree of heaven should be removed to promote long term community succession in areas where black locust is native. Published in Forests 9(4), 221. 2018

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Dose-response Methodology for Variant Populations of Bohemian Knotweed

Dose-response Methodology for Variant Populations of Bohemian Knotweed

Strelau et al tested herbicide tolerance in two Bohemian knotweed (Reynoutria × bohemica Chrtek & Chrtkov) populations using rhizome fragments. Results showed there was no difference between populations and knotweed was susceptible to the herbicide treatment. Published in 2018 in Canadian Journal of Plant Science 98(6):1380-1383.
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New Invader! The Biology of Canadian Weeds: 156. Daphne laureola L.

New Invader! The Biology of Canadian Weeds: 156. Daphne laureola L.

Spurge-laurel or “Daphne” (Daphne laureola L.) is an invasive, perennial, evergreen shrub introduced to North America as an ornamental. The plant escaped cultivation and is now found on both the east and west coasts of North America. All parts of the shrub are toxic to humans and animals, and dense infestations suppress native vegetation. Strelau et al. 2018. Canadian Journal of Plant Science 98(4):947-958.
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Native Hardwood Tree Seedling Establishment Following Invasive Autumn-Olive (Elaeagnus umbellata) Removal on a Reclaimed Coal Mine

Native Hardwood Tree Seedling Establishment Following Invasive Autumn-Olive (Elaeagnus umbellata) Removal on a Reclaimed Coal Mine

Coal mining has caused large-scale disturbance on over 1.5 million acres in Appalachia. Invasive, non-native autumn olive was historically planted on former coalfields and now impedes reclamation efforts. Read about studies conducted by Virginia Tech on managing autumn olive and restoring native hardwoods.

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Medusahead and Ventenata in the Northern Great Plains Ecoregion: Invasion History and Management Efforts

Medusahead and Ventenata in the Northern Great Plains Ecoregion: Invasion History and Management Efforts

The invasive winter annual grasses medusahead (Taeniatherum caput-medusae) and ventenata (Ventenata dubia) have a relatively long history of spread and impact in the Intermountain West. In 2016, self-sustaining populations of both species were documented in Sheridan County, Wyoming, representing the first known populations of each species in the Great Plains region.

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Developing a Detection Method for New Invaders at the Landscape Scale

The ability to predict plant invasions and detect them early in the process are important considerations for invasive plant management. While agencies and landowners typically take the approach of on-the-ground searches and some may utilize habitat suitability models, these tools may not facilitate detection of incipient infestations when the species is unknown. A team set out to develop a method to identify where to look for a new invader to assist managers in focusing search efforts to areas more prone to invasion.

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Constructing Standard Invasion Curves from Herbarium Data—Toward Increased Predictability of Plant Invasions

by Pedro M. Antunes and Brandon Schamp. Invasive Plant Science and Management, 10(4):293-303. 2017.

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Is it possible to predict which nonnative plant species will become invasive weeds and when? Authors explore challenges related to developing invasion curves for plants using herbarium data.  The goal is to better position herbaria and researchers to assist natural resource managers in prioritizing needs, supporting management decisions and developing prevention and monitoring programs.  

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Secondary Invasion and Reinvasion after Russian-Olive Removal and Revegetation

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Erin K. Espeland, Jennifer M. Muscha, Joseph Scianna, Robert Kilian, Natalie M. West, and Mark K. Petersen. Invasive Plant Science and Management October-December 2017 Vol. 10, No0. 4: 340-349.

Cut-stump application of triclopyr provided 96% control of Russian olive the year following treatment.  Seeded native species did not have trouble establishing once adequate spring moisture occurred in the second growing season after Russian-olive removal, indicating that removal did not present substantial obstacles to successful revegetation. Follow-up control of Russian-olive is critical after initial treatment. [ READ FULL ABSTRACT. ]