| Previous digest | Subsequent digest |
Global Invasive Species Team listserve digest #023
Wed, 17 Feb 1999 12:40:34 -0800 (PST)
--CONTENTS--
1. A note on the Weeds Listserve
2. Prioritizing Japanese honeysuckle control
3. Colocasia esculenta in northwest Florida
4. More on native wildlife and alien plants
---------------------------------------
1. A note on the Weeds Listserve
From: Barry Rice (bamrice(at)ucdavis.edu)
A few of you have told me the listserve digests have been arriving too
frequently. (Someone *even* used the harsh verb, "clogging".) We will
experiment with sending the listserve digests out no more frequently than
once every two days.
---------------------------------------
2. Prioritizing Japanese honeysuckle control
From: Bob Merriam (bmerriam(at)tnc.org)
Japanese honeysuckle probably covers more ground in N.C. than any other
invasive. Why are we no longer so afraid of it under forest canopies? In
clever experiments, Martina Keefe counted and identified all plants in sq.
meter plots along transects on mixed hardwood forest floors. In the same
plots she counted honeysuckle leaf pairs. She then plotted herb species
OR number of stems as a function of honeysuckle density. Surprise! She
found that up to 550-600 leaf pairs per sq. meter (the highest density
found under a complete canopy), there was NO significant reduction of herb
species or numbers.
Result: Our management now focuses mainly on cutting the vine out of
trees where it can damage or kill a tree. When the vine is too close to
sensitive areas we selectively herbicide it with a back pack sprayer in
the winter when it is one of the few green plants in NC, using 1.5%
Roundup.
---------------------------------------
3. Colocasia esculenta in northwest Florida
From: Candace Gerber (cgerber_tnc(at)nettally.com)
A Conservancy neighbor (Torreya State Park) in Northwest Florida has
problems with Colocasia esculent, also known as Wild Taro or Elephant Ear,
invading wet/swampy areas. The park's current approach is yanking/digging
it up - trying to get every bit of root as the darn stuff resprouts from
next to nothing. Needless to say, this approach is very tedious and only
minimally successful...any suggestions?
Candace Gerber - The Nature Conservancy
Northwest Florida Program
---------------------------------------
4. More on native wildlife and alien plants
From: James F. Bergan (JBergan(at)TNC.org)
The most recent work I am familiar with is a master's project supported by
TNC (via TX Chapter and TNC's Wildland Weeds Program. One aspect of the
project was to quantify habitat use and behavior of fall/winter
migrant/resident birds in Chinese tallow (Sapium sebiferum) woodlands on
the Texas coast.
The project was conducted by Warren Conway at Texas Tech University. I
was on the committee and have a copy of his thesis. The bird portion of
the research should be getting published by the JFO. Please call me if
you have questions.....Jim Bergan, 512/882-3584, Corpus Christi, TX
---------------------------------------------------------------