[MAIPC] [MD-OUTINGS-COMM] FW: deer exclosures and JSG

[Nathan Hartshorne]

I've definitely had to spray a lot of stiltgrass after the deer fence went
up.  But I don't know how to compare those sites to before the fences since
I never got the luxury of seeing them a year before.  If people do look
into this, it's worth also considering the impact of invasive worms.  The
worst site I treated (no fence at this one) had a lot of deer, but it also
had virtually no leaf litter despite being mostly forested.

On Sat, Jun 23, 2018 at 9:30 PM, Marc Imlay <ialm at erols.com> wrote:

> *Any response for Larry in addition to his two explanations? Thanks*
>
>
>
> *Marc*
>
>
>
>
>
> *From:*
>
>
> * Larry Broadwell [mailto:bakpacker1 at verizon.net <bakpacker1 at verizon.net>]
> Sent: Saturday, June 23, 2018 8:56 PMTo: Maryland Chapter Outings Committee
> <MD-OUTINGS-COMM at LISTS.SIERRACLUB.ORG
> <MD-OUTINGS-COMM at LISTS.SIERRACLUB.ORG>>; Marc Imlay <ialm at erols.com
> <ialm at erols.com>>Subject: Re: [MD-OUTINGS-COMM] FW: [MAIPC] deer exclosures
> and JSG*
>
>
>
> *Marc,*
>
> *I'm not getting some of this.*
>
>
>
> *Are deer spreading JSG? Are they eating so much native grass that JSG is
> filling in areas formerly filled with native grass?*
>
>
>
> *Larry Broadwell *
>
>
>
> *On Saturday, June 23, 2018 4:43 PM, Marc Imlay <ialm at erols.com
> <ialm at erols.com>> wrote:*
>
>
>
>
>
> *Many studies have shown that when deer are present at 20/square mile or
> less, there is a dramatic reduction in the cases of Lyme disease. Here are
> some parks with this lower deer density of 20/square mile as a result of
> managed hunts. Can someone find out how much the reduction of deer density
> has resulted in reduction of Japanese Stilt grass? **One urgent research
> question is to determine if reduction of deer to the natural level of
> 20/square mile works as well as deer exclosures in reducing JSG.*
>
> *Howard County*
>
> *Middle Patuxent Environmental area <https://www.howardcountymd.gov/MPEA>*
>
> *Meadowbrook Park <https://www.howardcountymd.gov/MeadowbrookPark>*
>
> *Schooley Mill Park <https://www.howardcountymd.gov/SchooleyMillPark>*
>
>
>
> *Western Regional Park
> <https://www.howardcountymd.gov/WesternRegionalPark>Rock Creek National
> Park <https://www.nps.gov/rocr/index.htm> in Washington D.C. adjacent to
> Montgomery CountyCatoctin Mountain National Park
> <https://www.nps.gov/cato/index.htm>* in Frederick County
>
>
>
>
>
> *Hi Marc - as you probably know, the Woodend Sanctuary of ANS now has a
> deer fence. I am on a team monitoring the unrestored meadow, which used to
> be infested with stlltgass. Native forbs and grasses have taken over with
> very little JSG to be seen. The changes are being documented - in my
> meadow, the restored meadow, woodlands and stream. Heartening!*
>
>
>
> Marney
>
>
>
> On Jun 23, 2018, at 10:35 AM, Marc Imlay <ialm at erols.com> wrote:
>
>
>
> *In the 200 acre Swann Park in Charles County, there are 3 places where I
> have seen a pathogen infestation of Japanese Stilt grass. Only one of these
> sites has been re infested in subsequent years. Today I transferred some of
> the site with an August pathogen infestation of Japanese Stilt grass that
>  has been re infested in subsequent years to a bad patch of JSG elsewhere
> in the park with similar habitat. (from the Mattawoman watershed part of
> Swann Park to the Pomonkey watershed component of Ruth B. Swann Park). I
> marked the site and will return to check it out each month. *
>
>
>
> *Let us discuss other ideas to address control of our most difficult
> invasive plant to control. ** One urgent research question is to
> determine if reduction of deer to the natural level of 20/square mile works
> as well as deer exclosures in reducing JSG. How can we facilitate research
> into **native **host specific biological controls of JSG**.*
>
>
>
>
>
>  *Marc Imlay, PhD, Chair, MAIPC Biological control working Group,  **MD
> Chapter Sierra Club Natural Places Chair. *
>
>
>
>
>
> *Conservation biologist, Park Ranger Office, Non-native Invasive Plant
> Control coordinator. (301) 442-5657 cell  ialm at erols.com
> <ialm at erols.com>Natural and Historical Resources DivisionThe
> Maryland-National   Capital   Park  and Planning Commissionwww.pgparks.com
> <http://www.pgparks.com/>  *
>
>
>
>
>
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