[MAIPC] Literature on impacts of invasive plants on game wildlife?

[Susan Gitlin]

Thanks, Conner.  Your last sentence speaks to the reason that I posed this
question.

I spend a lot of time removing autumn olive, stiltgrass, Japanese
honeysuckle, etc etc from my property along the Maury River in Rockbridge
County.
But the property is in the floodplain and the river can bring seeds of
invasive plants from upstream properties, thus undoing my work.  Many
property owners do not know about the problems that invasives cause, or
they simply do not have the interest or resources to remove them.  Given
that hunting and fishing are extremely popular activities in that area, I
wondered about the possibility of creating incentives, or at least engaging
in an educational campaign, based on the impact of invasive plants on those
activities -- if such an impact has been established.  Thus, I am looking
for information on that connection.

--Susan.

On Fri, Mar 8, 2019 at 12:32 PM Conner McBane <cmcbane at appalachiantrail.org>
wrote:

> Hi Susan,
>
> Dr. Tallamy makes great points on invasive plants impacts to birds
> specifically. Breeding season for bird species requires heavy protein
> sources from caterpillars whose greatest population diversity and size are
> found on native plants. Clutch size is dependent on these high protein
> sources. Invasive plant species do not have the diversity in insects and so
> this causes a lack of protein for bird reproduction. Many invasive species
> such as umbellata do not fruit until well after breeding season so while
> the fruit might still be utilized by bird species, it is not useful for
> overall population growth. As you know, native species can and have
> provided the fruit needed for migration so umbellata is not supplementing
> any needed food source.
>
> This might be more specific to non-game migratory bird species but I
> assume similar cases can be made for game species.
>
> This is a great question though and I think NNIS impacts to wildlife is a
> really important selling point to the public for NNIS management.
>
> Best,
>
>
> On Mar 7, 2019, at 6:10 PM, Susan Gitlin <
> susan.mclaughlin at alumni.stanford.edu> wrote:
>
> Rick, can you by any chance point to specific studies that Dr. Tallamy has
> done?  I am aware of his work on the relationship between native plants and
> Lepidoptera (whose caterpillars are eaten by birds), but I'm not aware of
> his work on the impacts of invasive plants on birds.  Thank you!
>
> On Thu, Mar 7, 2019 at 6:05 PM Richard Johnstone <ivmpartners at gmail.com>
> wrote:
>
>> I'm not sure about game species, but Dr. Doug Tallamy, UD, has great
>> research on the effects on native birds.
>> Rick
>>
>> On Thu, Mar 7, 2019 at 5:16 PM Susan Gitlin <
>> susan.mclaughlin at alumni.stanford.edu> wrote:
>>
>>> Hi.  Would any of you happen to have written or otherwise know of
>>> articles regarding net actual or potential impacts of invasive plants on
>>> Virginia game species?  I say "net" because many people will argue, and
>>> rightfully, that plants like *Elaeagnus umbellata *are a food source
>>> for wildlife.  The impacts on biodiversity and reductions in native sources
>>> of food may be less obvious in the shorter term.  I am wondering to what
>>> degree the spread of invasive plants has or may impact hunting in Virginia
>>> or nearby states over the long term.  Can you suggest any sources of
>>> information?
>>>
>>> Thank you!
>>>
>>> --Susan Gitlin
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