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Global Invasive Species Team listserve digest #127
Mon Jun 14 2004 - 14:02:29 PDT

1. Listserve/web site activities (Global, Planet Earth)
2. Become famous on the web; write an ESA! (Global, Planet Earth)
3. Lobate lac scale (Eastern USA)
4. Prevention Strategies for Invasive Plants (Nationwide, USA)
5. Vehicle washings in remote locations (New Hampshire, USA)
6. TNC signs for postage money (Wherever TNC works)
7. Kummerowia striata and K. stipulacea (Nationwide, USA)
8. Invasive bush lupines (Eastern states, USA)
9. Working with nursery/landscape industries? (Global, Planet Earth)
10. Plant Invaders Book special offer (Mid-Atlantic, USA)
11. A new invasive species assessment protocol (Nationwide, USA)
12. Buckthorn abstract (Texas, USA)


1. Listserve/web site activities (Global, Planet Earth)
From: Barry Rice (bamrice(at)ucdavis.edu)

Yes, the listserve has been very quiet lately. This is partly due to a
change in the mail programs being used to process the listserve, and
learning curve timescales on my part. Apologies for the tardiness of this
listserve posting! If there are formatting problems, readability issues,
etc., with this listserve mailing, please contact me!

Web site updates:
**A new Species Management Summary on Potentilla recta, by Bryan Endress
(post-doc at Oregon State University) and Catherine Parks (USFS)!
See: http://tncinvasives.ucdavis.edu/esadocs/poterect.html

**Image updates! We have been updating our image library available on our
site. For examples of old and new image quality, compare the updated set of
images for Arundo donax: http://tncinvasives.ucdavis.edu/esadocs/arundona.html
...to the older style images such as
Phragmites australis: http://tncinvasives.ucdavis.edu/esadocs/phraaust.html
We are slowly updating images, if you are in desperate need of a newly
scanned image, send us email and we will try to help.


2. Become famous on the web; write an ESA! (Global, Planet Earth)
From: Mandy Tu (imtu(at)tnc.org)

Are you involved in the research and/or management of a particular invasive
species? Have you considered doing a thorough literature search and
contacting others that also manage that species, then sharing that
information with other natural resource managers? TNC-ISI (previously
TNC-WIST) is interested in having new Species Management Summaries (ESAs)
written and old ones updated! If you are interested in writing an ESA for
us, first check to see if we already have one written at
http://tncinvasives.ucdavis.edu/esadocs.html, then contact me if there is one
that you would like to write. We have recently posted "Instructions for
Authors" on that same page.

Also let me know if there is one that you would like to have written, so we
can add it to our list.


3. Lobate lac scale (Eastern USA)
From: Tunyalee Martin (tamorisawa(at)ucdavis.edu)

The lobate lac scale (Paratachardina lobata lobata) has recently been found
on Florida's Cudjoe Key on wax myrtle. The scale was first found in
Florida's Broward County in 1999 and has since spread to coastal and inland
areas of Collier, Hendry, Lee, Martin, Miami-Dade and Palm Beach counties.
The lobate lac scale is 1.5-2 mm long, dark reddish-brown, and has lobes
that form an "X" shape when viewed from above. The scales can cause plant
branches to wither and die. The scales secrete waste heavy in sugar, which
coats the rest of the plant and is a good substrate for black sooty mold to

The lobate lac scale feeds on many different trees, shrubs and plants.
Thirty-nine native plant species are suitable hosts. More than 120 species
in 44 families of woody plants can be attacked. Wax myrtle (Myrica
cerifera) and cocoplum (Chrysobalanus icaco) are good hosts of the lobate
lac scale and it is recommended to NOT purchase these plants. Unfortunately,
another good host is melaleuca, an invasive tree. Large numbers of scales
can build up on melaleuca and spread to other areas!

For more information visit:


4. Prevention Strategies for Invasive Plants (Nationwide, USA)
From: Ellen Jacquart (ejacquart(at)tnc.org)

Ellen forwarded us information about a new publication from the
Environmental Law Institute (ELI). The document is described as, "Making a
List: Prevention Strategies for Invasive Plants in the Great Lakes States
surveys plant listing programs in Illinois, Indiana, Michigan, Minnesota,
Ohio, and Wisconsin to assess the effectiveness of listing as a tool to
prevent the proliferation and spreads of invasive plant species." The report
can be bought from ELI for $20, or electronic copies can be downloaded from
their web site for free! The url is:


5. Vehicle washings in remote locations (New Hampshire, USA)
From: Erin Larson (ehlarson(at)fs.fed.us)

White Mountain National Forest is beginning to require that all operators
wash their equipment when entering or leaving a project area. Many of our
projects are in remote locations, and thus, using a commercial car wash
facility or accessing an administrative site is not practical. Are there
any suggestion out there on how we might wash the equipment in the field and
contain the seed and debris so that it does not spread locally. I know that
the Forest Service is working on a prototype for a power washer, but at this
time we do not have the money for such equipment.


6. TNC signs for postage money (Wherever TNC works)
From: Maggie Straub (mstraub(at)tnc.org)

As the fiscal year draws to a close, so too, does our use of the old TNC
logo. Below please find what we have remaining in our Stewardship sign
inventory where the old logo still appears. Rather than throwing these
signs away, we would prefer to give them to those who can use them. A Word
document showing the signs available, and approximate quantity in the
inventory, can be viewed at:

If you wish to receive any of these signs, please contact me with the number
of signs desired along with a budget center number for freight charges.


7. Kummerowia striata and K. stipulacea (Nationwide, USA)
From: Ellen Jacquart (ejacquart(at)tnc.org)

I am looking for information on information on the potential invasiveness of
Kummerowia striata (Japanese clover) and K. stipulacea (Korean clover,
Korean lespedeza). These annuals are popularly planted for wildlife habitat
in Indiana and we have little information on their occurrence and potential
for spread. They are listed as "lesser threat" invasives in the southeast,
but I haven't found other references for them. If you've seen these moving
into areas they weren't planted, I'd appreciate hearing about it.


8. Invasive bush lupines (Eastern states, USA)
From: Nan Hampton (wildflower(at)wildflower.org)

We have received a question at the Lady Bird Johndson Wildflower Center
concerning clearing of invasive yellow bush lupines (Lupinus arboreus) from
the coastal dunes of Maine or anywhere in the East Coast area. Is there, or
has there been, a scheduled clearing along the East Coast? There is such a
project that occurs in the coastal dunes in Humboldt County California, but
I have not been able to find any information about removal of the species on
the the East Coast.

9. Working with nursery/landscape industries? (Global, Planet Earth)
From: Mandy Tu (imtu(at)tnc.org)

If you are working locally or at the state level with a group from the
nursery or landscape industry, and if they have formally agreed to endorse
the St. Louis Codes of Conduct, can you please send the name of the group
you are working with to cpc(at)mobot.org to have your group listed among those
who have endorsed the Codes? There is some concern from the industry that
only 17 groups have endorsed these codes, and that some states with very
high production levels are not listed. To see if the group you are working
with has been listed, see http://www.mobot.org/invasives/endorsementN.html


10. Plant Invaders Book special offer (Mid-Atlantic, USA)
From: Jil Swearingen (jil_swearingen(at)nps.gov)

Available until 30 June 2004, you can buy bulk quantities of the book, Plant
Invaders of Mid-Atlantic Natural Areas, for only $1.50 per book. For more
information, see:


11. A new invasive species assessment protocol (Nationwide, USA)
From: Terri Killeffer (terri_killeffer(at)natureserve.org)

NatureServe announces the release of a new scientific methodology evaluating
the impacts of non-native plants on native species and conservation areas -
An Invasive Species Assessment Protocol: Evaluating Non-Native Plants for
Their Impact on Biodiversity (Morse, et. al., NatureServe, 2004). The
protocol is designed to make the process of assessing and listing invasive
plants objective, systematic, and transparent and will help set priorities
focusing scarce management resources on the very worst invaders. In January
2004, NatureServe implemented the protocol at a national level in the U.S.,
and to date, we have assessed over 300 of the more than 3,500 non-native
plants that have escaped cultivation in the U.S. The protocol, Invasive
Species Impact Ranks (I-Ranks) and subranks for the 300+ species, and
example species with supporting documentation are available on the
NatureServe website at www.natureserve.org/getData/plantData.jsp.

Funders and Authors:
Development of the Invasive Species Assessment Protocol was made possible
through charitable support from the Turner Foundation and the National Fish
and Wildlife Foundation, with additional funding from the U.S. Air Force and
the Federal Highway Administration. The protocol is the result of a
collaborative effort by a team comprising Larry Morse, Nancy Benton, and
Stephanie Lu of NatureServe, John Randall of The Nature Conservancy's
Wildland Invasive Species Team, and Ron Hiebert of the National Park


12. Buckthorn abstract (Texas, USA)
From: Matthew Fagan (mfagan(at)tnc.org)

Below is the abstract from a recent paper by Matthew Fagan and D.Peart. For
more information on the paper, contact Matthew at mfagan(at)tnc.org

The invasion of forests in the northeastern U.S.A. by glossy buckthorn
(Rhamnus frangula L.) has resulted in a dense, non-native shrub layer that
frequently dominates the understory. We investigated the effects of
buckthorn on the survival and growth of juvenile canopy trees spanning a
wide range of shade tolerance (sugar maple (Acer saccharum Marsh.), red
maple (Acer rubrum L.), white ash (Fraxinus americana L.), and white pine
(Pinus strobus L.)), in a stand dominated by white pine. First, we measured
the effect of buckthorn on sapling growth in a field study. Second, we
inferred effects on sapling survivorship from age data and from published
relationships between radial growth and mortality rate. Third, we evaluated
the effects of buckthorn on seedling growth and survival in canopy openings,
by felling trees to create experimental gaps.
Buckthorn reduced the growth and survival of saplings of all species, and
altered the relative abundance of seedlings in favor of shade-tolerant
species. Estimates of sapling survival implied that < 10% of tree saplings
can survive to grow through high density buckthorn under closed canopies.
This reduces the probability that understory saplings will survive to
recruit into all newly formed canopy gaps. The experimental results suggest
that tree seedlings are most likely to recruit in canopy gaps, despite the
generally high buckthorn cover in gaps. Thus, recruitment of tree seedlings
in gaps (even under buckthorn) may become the main source of canopy
recruits. The increasing dominance of glossy buckthorn in New England pine
forests is likely to change the relative abundance of tree species in the
forest canopy, and may delay the filling of canopy gaps.

Updated June 2004
©The Nature Conservancy, 2004