Date: 3/7/18 1:06 pm From: Ashley Lohr via va-bird <va-bird...> Subject: Re: [Va-bird] Final post: link to Penn State research shows value of invasive plants
Not all introduced plants are invasive, and certainly not all invasives can be weighted equally. For example: nandina berries kill cedar waxwings and other birds (and cats, dogs, and other animals)...sweetgum trees tend to dominate forest understories, which significantly decreases the quality of nesting habitat for many birds...many invasives are vines or small shrubs that out-compete native species that provide more nutritional value for wildlife, as previously mentioned. Invasive plant species can also promote the spread of invasive insects since they often originate from the same part of the world.
While it's true that many invasive species aren't going anywhere because they have become well-established (imagine a threshold), we also shouldn't "settle" for invasives and stop promoting beneficial *native* flora and fauna.
Ashley Lohr Virginia Tech Class of 2015 Wildlife Conservation major / Entomology minor <aklohr...>
On Wed, Mar 7, 2018 at 2:51 PM, Marlene A Condon via va-bird < <va-bird...> wrote:
> https://www.sciencedaily.com/releases/2011/02/110211095555.htm > > Invasive plants can create positive ecological change > Source:Penn State > > Summary:Invasive fruiting plants sometimes can be beneficial to an > ecosystem, contrary to prevailing ideas. The discovery is expected to > affect the prevailing approach to ecosystem maintenance, which typically > involves efforts to eliminate non-native, invasive shrubs. > > In a message dated 3/6/2018 7:25:01 PM US Eastern Standard Time, > <va-bird...> writes: > > > All, > > The topic of Autumn Olive and non-native (sometimes invasive) species as > bird food is, I think, a tad beyond what we should focus on in this > list-serv, but it is a healthy discussion to have. This said there are a > couple things I would like to bring to your attention. > > As a non-native species, Autumn Olive's (and other Asian species by > extension) its nutritional value to birds is limited. For example, > > 1) Its berries have only 2% fat versus 23% for Virginia Creeper or over > 50% for Northern Bayberry (Smith et al., 2007 & 2013) > 2) Hedgerows containing mostly Asian plant species (including Autumn > Olive) provide 5-20x fewer caterpillars compared to hedgerows containing > only native species (Richard, 2013) > > Increasingly more literature is available on the benefits of native plants > to birds. Especially Doug Tallamy's research group at the University of > Delaware is doing some great work in this new field and they publish > frequently. Tallamy's book "Bringing Nature Home" is worth a read ( > http://www.bringingnaturehome.net). > > To close out this email, for those with an interest in attracting bird > with native plants and the benefits of natives plants, I invite you to > attend a lecture that I'll give on this subject on March 25, 2018 in > Leesburg, VA. Details can be found here https://loudounwildlife.org/ > event/attract-birds-yard-native-plants/. > > For any questions and further comments, please reply directly to me. > > Happy birding and gardening > > Gerco Hoogeweg, PhD > Leesburg, VA > > Sources: > Richard, M., 2013, Investigating The Impacts Of Vegetation On Food Web > Complexity, A thesis submitted to the Faculty of the University of Delaware > in partial fulfillment of the requirements for the degree of Honors > Bachelor of Sciences in Wildlife Conservation with Distinction. > > Smith, S.B., K.H. McPherson, J.M. Backer, B.J. Pierce, D.W. Podlesak, and > S.R. McWilliams. 2007. Fruit quality and consumption by songbirds during > autumn migration. The Wilson Journal of Ornithology 119:419-428. BioOne, > Google Scholar > > Smith, S.B., S.A. DeSando, and T. Pagano, 2013, The Value of Native and > Invasive Fruit-Bearing Shrubs for Migrating Songbirds, Northeastern > Naturalist April 2013 : Vol. 20, Issue 1, pg(s) 171- 184 > https://doi.org/10.1656/045.020.0114 > > > -----Original Message----- > From: va-bird <va-bird-bounces+drgerco=<hotmail.com...> On > Behalf Of Janice Frye via va-bird > Sent: Tuesday, March 6, 2018 1:46 PM > Cc: VAListserve <va-bird...> > Subject: Re: [Va-bird] Autumn Olive and other non-natives and invasives > are not for the birds > > Love those links, Dixie. > > Be careful how you get rid of Autumn Olive. Some methods make it spread > worse and it comes back more vigorous than before, but most of the reading > I have done included detailed guidance on that topic. Also, the number of > seeds produced and carried far from the original plant can apparently make > the spread deceptive. In my experience, everyone seems convinced that the > plant in THEIR yard is not a problem and never has been, but whether it is > a Bradford Pear, Autumn Olive, or some other invasive, the problem is > already too big to be promoting the planting more of the same. My opinion, > of course, but it seems to be shared by most of the plant experts I read or > talk to. Birds have too many habitat challenges already. > > Respectfully, > > Jan Frye > > On Tue, Mar 6, 2018 at 8:19 AM, Dixie Sommers via va-bird < > <va-bird...> wrote: > > > Thanks, Janice. Autumn Olive is an invasive! All of you out there - > > get rid of it! While you are at it, Photina and probably lots of > > other things in our gardens are not native plants. > > > > To help the birds, consider converting your yard and garden to > > Virginia natives - the plants and birds have evolved together to make > our ecosystem. > > > > > > There is lots of information from the Virginia Native Plant Society > > http://vnps.org/ Check it out! > > > > If you are in Northern Virginia, check out "Plant NOVA Natives" > > http://www.plantnovanatives.org/ > > > > -----Original Message----- > > From: va-bird > > [mailto:va-bird-bounces+dixiesommers=<cs.com...>] > > On > > Behalf Of Janice Frye via va-bird > > Sent: Monday, March 05, 2018 11:34 PM > > To: Marlene A Condon <marlenecondon...> > > Cc: VAListserve <va-bird...> > > Subject: Re: [Va-bird] adult male Red-naped Sapsucker! western > > Albemarle > > > > You have Autumn Olive in your nature-friendly garden? For educational > > purposes, I would suggest that others look up this plant. I had never > > heard of it until some plant people were talking about it at the > > Smithsonian Conservation Biology Institute in Front Royal a year or so > > ago. > > Well worth reading up on for those who don't know of it. > > http://blueridgeprism.org/wp-content/uploads/2017/06/ > > Autumn-Olive-Factsheet- > > 5-24-17-VDOF-w-BOX.pdf > > > > On Thu, Nov 9, 2017 at 10:06 AM, Marlene A Condon via va-bird < > > <va-bird...> wrote: > > > > > Have had another rare migratory yard bird at The Nature-friendly > > > Garden (I've had several over the years, including a male Kirtland's > > > Warbler 3 years ago--whether anyone wants to believe it or not). > > > > > > Have been seeing an adult male Red-naped Yellow-bellied Sapsucker > > > this morning in our Autumn Olives and Photinias! > > > > > > Sincerely, > > > Marlene > > > *** You are subscribed to va-bird as <byrdnyrd33...> If you > > > wish to unsubscribe, or modify your preferences please visit > > > https://mailman.listserve.com/listmanager/listinfo/va-bird *** > > *** You are subscribed to va-bird as <dixiesommers...> If you wish > > to unsubscribe, or modify your preferences please visit > > https://mailman.listserve.com/listmanager/listinfo/va-bird *** > > > > *** You are subscribed to va-bird as <byrdnyrd33...> If you wish > > to unsubscribe, or modify your preferences please visit > > https://mailman.listserve.com/listmanager/listinfo/va-bird *** > > > *** You are subscribed to va-bird as <drgerco...> If you wish to > unsubscribe, or modify your preferences please visit > https://mailman.listserve.com/listmanager/listinfo/va-bird *** > *** You are subscribed to va-bird as <marlenecondon...> If you wish > to unsubscribe, or modify your preferences please visit > https://mailman.listserve.com/listmanager/listinfo/va-bird *** > *** You are subscribed to va-bird as <aklohr...> If you wish to > unsubscribe, or modify your preferences please visit > https://mailman.listserve.com/listmanager/listinfo/va-bird *** *** You are subscribed to va-bird as <lists...> If you wish to unsubscribe, or modify your preferences please visit https://mailman.listserve.com/listmanager/listinfo/va-bird ***