[MAIPC] MAIPC Digest, Vol 58, Issue 10 -Wavy grass and Stilt grass

Thu Aug 11 05:56:29 PDT 2016

Oplismenus hirtellus ssp. undulatifolius, Microstegium vimineum, Wavy and Stilt grasses:  We have tried using a mowing hedger between native plants otherwise the mowing kills off other natives trying to push their way through. While in DC, several people spoke of stilt grass and wavy grass that were being spread by machine. They reported observing this in the local parks, they also had observed that when anyone mowed in an area, the equipment operators  were not cleaning off the equipment or vehicles (?) and they could see a trail where equipment had been of Wavy grass and/or stilt grass. Maybe, a quick wash of the vehicle (?) There was no elaboration as to what they meant by cleaning the vehicle. Washing off the tires (?). It was visibly being spread by equipment operators. They showed pics of actually following the vehicle trails and the grass behind which had not been there previously. When, some people on the Coastal Plain were hiking - they picked it up in the mountains (vehicle??) again the question, and brought it with them in the native plants that they were selling, we now have it all over our yard - and have begun a campaign of pulling because it is mixed in with native plants. We have also tried using a hedger which clears between native plants.  It has quadrupled in its stay since Spring when it was inadvertently introduced. I need some help understanding this - was it by seeds being attached to the tires? It seems like it was spread via tires, and could have been easily cleaned off before returning? Not certain of this.Maybe , someone else has some ideas? 

 Kathryn Peterson-Lambert

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Subject: MAIPC Digest, Vol 58, Issue 10

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Today's Topics:

   1. Re: Wavyleaf Basketgrass updates (Stockschlaeder, Erin A.)

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Message: 1
Date: Thu, 11 Aug 2016 12:18:01 +0000
From: "Stockschlaeder, Erin A."
	<Erin.Stockschlaeder at fairfaxcounty.gov>
To: Marc Imlay <ialm at erols.com>, "maipc at lists.maipc.org"
	<maipc at lists.maipc.org>
Subject: Re: [MAIPC] Wavyleaf Basketgrass updates
Message-ID:
	<67D4BA98020D1949ACE40B5BD4F8251AF1D3DBB5 at ffxexmps03.FFX.CO.FAIRFAX.VA.US>

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Unfortunately WLBG has been found in a number of Fairfax County Parks, including two natural area preserves. Volunteers are handpulling and contractors are spraying but it keeps popping up in different locations.

From: MAIPC [mailto:maipc-bounces at lists.maipc.org] On Behalf Of Marc Imlay
Sent: Wednesday, August 10, 2016 6:00 AM
To: maipc at lists.maipc.org
Subject: [MAIPC] Wavyleaf Basketgrass updates

I will present updates on wavyleaf basketgrass, Oplismenus undulatifolius, on September 17, 2016,  at the fall conference of the Maryland Native Plant Society. Please send me updates, both good and bad. For example, Ranger Mike Ellis with M-NCPPC, has found many new major infestations in Prince Georges County, MD. He and I have found it abundant in upland open space habitat provided a large amount of water is available.

Marc Imlay, PhD, Chair, Biological Control Working Group
Conservation Biologist, Park Ranger Office, Non-native Invasive Plant Control Coordinator.
Cell: (301) 442-5657, ialm at erols.com
Natural and Historical Resources Division
The Maryland-National Capital Park and Planning Commission
www.pgparks.com

The Journal of the Torrey Botanical Society
Published by: Torrey Botanical Society<http://www.bioone.org/action/showPublisher?code=tobs>

 FW: http://www.bioone.org/doi/abs/10.3159/TORREY-D-13-00033.1?journalCode=tbot

The Journal of the Torrey Botanical Society 140(4):391-413. 2013
doi: http://dx.doi.org/10.3159/TORREY-D-13-00033.1
An introduction to Oplismenus undulatifolius (Ard.) Roem. & Schult. (wavyleaf basketgrass), a recent invader in Mid-Atlantic forest understories1,<http://www.bioone.org/doi/abs/10.3159/TORREY-D-13-00033.1?journalCode=tbot#fn1>2<http://www.bioone.org/doi/abs/10.3159/TORREY-D-13-00033.1?journalCode=tbot#fn2>

Vanessa B. Beauchamp3<http://www.bioone.org/doi/abs/10.3159/TORREY-D-13-00033.1?journalCode=tbot#cor1> and Stephanie M. Koontz
Department of Biological Sciences, Towson University, Towson, MD 21252
Christine Suss and Chad Hawkins,
DEVELOP Internship Program, NASA Goddard Space Flight Center, Greenbelt, MD 20771
Kerrie L. Kyde
Maryland Department of Natural Resources, Wildlife and Heritage Service, 11960 Clopper Road, Gaithersburg, MD 20878
John L. Schnase
Office of Computational and Information Sciences and Technology, NASA Goddard Space Flight Center, Greenbelt, MD 20771
3Author for correspondence, E-mail: vbeauchamp at towson.edu<mailto:vbeauchamp at towson.edu>
1Funding for this project was provided by NASA's DEVELOP Internship Program and NASA's High-End Computing Program, the Middle Patuxent Environmental Foundation, the NSF Research Experience for Teachers (RET) program, the Baltimore Excellence in STEM Teaching (BEST) Project at Towson University, the Fisher College of Science and Mathematics and the National Fish and Wildlife Foundation's Pulling Together Initiative.
2Information on Oplismenus taxonomy was clarified through conversations with Mary Barkworth and Paul Peterson. We also thank our colleagues in NASA's DEVELOP Internship Program: Rachel Moore, Josh Henki, Stephanie Bates, and Ron Albright provided important contributions in the early stages of the project. We thank Roger Gill for his technical support in preparing data for the MaxEnt runs and field assistants Eric Cullings, Dana Wilson, Cody Kepner, Ken Compher, and Francis Smith for countless hours spent crawling through Oplismenus. Research facilitation and support from Robin Melton, past manager at Patapsco Valley State Park, was instrumental in the success of this project.

Abstract
A critical aspect of early-stage invasive species management is determining the niche and assessing the impact of a new species. A multi-scale strategy to predict potential habitat and impacts at the ecosystem, community and species level presents a robust, efficient, and cost effective tool for invasive species management. Regional scale maximum entropy modeling and local scale field studies were used to characterize species-environment and species-species interactions of Oplismenus undulatifolius, a recent invader in Mid-Atlantic forest understories. Oplismenus undulatifolius was first discovered in the U.S. near Baltimore, Maryland in 1996 and is currently found in 13 counties in Maryland and Virginia. At the landscape scale the USDA estimates that 30 percent of the U.S. is suitable for the establishment of O. undulatifolius. Regional scale modeling indicated that 22% of the area modeled was suitable for O. undulatifolius, with 1% highly suitable. Local scale field studies
  indicated that O. undulatifolius thrives at low light levels (2?11 mols m?2 day?1) across a wide range of litter depths (0?6 cm) and that light and litter depth are involved in dominance of O. undulatifolius over Microstegium vimineum. Interactions with Fagus grandifolia result in decreased O. undulatifolius cover and dominance, and areas of high O. undulatifolius cover typically have low species richness. Oplismenus undulatifolius has the ability to invade a far greater portion of the forest than M. vimineum, and more research on the community and ecosystem-level effects of this new invasive forest understory species is needed.
Received: May 16, 2013; Revised: September 8, 2013
Keywords: deciduous forest<http://www.bioone.org/keyword/Deciduous%20Forest>, Fagus grandifolia<http://www.bioone.org/keyword/Fagus%20Grandifolia>, introduced species<http://www.bioone.org/keyword/Introduced%20Species>, Maximum Entropy Modeling<http://www.bioone.org/keyword/Maximum%20Entropy%20Modeling>, Microstegium vimineum<http://www.bioone.org/keyword/Microstegium%20Vimineum>, niche<http://www.bioone.org/keyword/Niche>

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