[MAIPC] Invasive plants and climate change

Thu Jan 31 11:06:28 PST 2019

to add to the complication - how to differentiate climate-related factors from simple proliferation of human-planted source sites? If fashion promotes planting of a species either in new home developments or in greater quantities than before, propagule pressure will increase. The planting decisions might be guided to some extent by climatic factors, but they might simply reflect fads and marketing.

Faith
In a message dated 1/31/2019 1:58:29 PM Eastern Standard Time, kirsten2622 at comcast.net writes:

Miscanthus is a huge problem in the rare serpentine area of Lake Roland in Baltimore County. It has spread into the park and all up and down Falls Road from one business that planted it out front. 
Kirsten Johnson

On Jan 31, 2019, at 1:54 PM, Servis, Robert <Robert.Servis at montgomeryparks.org> wrote:
I agree, Miscanthus has really taken off in the Mid-Atlantic area in the last few years I feel.  I’m seeing it more and more in “natural areas”(where it has obviously escaped the landscape beds), at least here in Montgomery Co., Md.

Another one that comes to mind is Black Fountain Grass (and/or other species of commonly landscaped “fountain grasses”).  I have started seeing this MUCH more in natural areas just in the past 3-5yrs than I had ever noticed before.   It is spreading even into maintained lawn grasses.  (I have a small patch In the corner of my yard that has come around the corner of my fence from the neighbors landscaped flowerbed ☹…trying to now come up with a good control for it without killing the rest of my lawn grass, or having to dig it all up by hand and have holes in the yard.
*not sure if the spread of these is somewhat due to warming climates or what the true factors involved here are, but It seems that warming climates would only help the spread of these species if anything.I know the seeds are transported sometimes by vehicle tires, lawn mowers, in-proper disposal of yard/landscape clippings, etc.., in addition to being wind dispersed. I am seeing it a lot on open, abundantly sunny wood edges, mowed paths, and even now into the shady understory of mature forested areas.

Hopefully this is helpful, but I’ll try to keep thinking of others.
From: MAIPC <maipc-bounces at lists.maipc.org> On Behalf Of Mark Frey
Sent: Thursday, January 31, 2019 1:34 PM
To: MAIPC Listserve <maipc at lists.maipc.org>
Subject: Re: [MAIPC] Invasive plants and climate change
I agree about Boston ivy but the species that seem(s) to really exemplify the potential is Miscanthus spp. A huge problem in the south and becoming more so here.

On Thu, Jan 31, 2019 at 11:11 AM MARGARET L CHATHAM <margaret.chatham at verizon.net> wrote:
I agree that oriental bittersweet is a growing problem, but not that it’s an example of an exotic pest moving south-to-north. My first introduction to the idea of invasive exotic plants was fighting oriental bittersweet in Connecticut, 1978-81. At the time, I didn’t know of anyone else fighting the problem, but I called it a “take-over-the-world” plant & honed my recognition of it in its earliest, most easily pullable stages.
Margaret Chatham

On Jan 31, 2019, at 10:53 AM, Marc Imlay <ialm at erols.com> wrote:
In Maryland Oriental Bittersweet has become about 10 times more difficult to control in the last decade bas discussed at a MISAC meeting by many folks in the meeting.

Marc Imlay, PhD

Conservation biologist, Park Ranger Office, Non-native Invasive Plant Control coordinator. 
(301) 442-5657 cell  ialm at erols.com
Natural and Historical Resources Division
The  Maryland-National   Capital   Park  and Planning Commission

From: MAIPC <maipc-bounces at lists.maipc.org> On Behalf Of Melissa Bravo
Sent: Thursday, January 31, 2019 10:48 AM
To: MAIPC Listserve (maipc at lists.maipc.org) <maipc at lists.maipc.org>; Ossi, Damien (DOEE) <damien.ossi at dc.gov>
Subject: Re: [MAIPC] Invasive plants and climate change
The Invasive Plants guide sold by StackPole is sorted climatically and I have found it a good indicator of what can transition with a few degrees of minimum maximum temperatures. But it will take longer for them to acclimate their reproductive day length cycles to be fertile  seed distributors.

Melissa A. Bravo, M.S. CCA, Agronomist
Meadow Lake Farm Consulting Services 814-574-4067 / bravomelissa at yahoo.com

On Thursday, January 31, 2019, 10:10:44 AM EST, Ossi, Damien (DOEE) <damien.ossi at dc.gov> wrote:

Question:  What, if any, invasive plant species appear to be spreading into the mid-Atlantic due to climate change?  I know there’s been talk of southern magnolia and other species that are native to just south of here starting to naturalize in our area, but I’m more interested exotic invasives.  

What invasive plants are common in southern Virginia or northern North Carolina that we just don’t have in our area, but could move here with warmer climates?

Thanks,

Damien

Damien P. Ossi

Wildlife Biologist

Fisheries and Wildlife Division

Department of Energy & Environment

Government of the District of Columbia

1200 First Street NE, 5th Floor

Washington, DC 20002

Desk: (202) 741-0840

Web: doee.dc.gov

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