How Many Non-Native Species in New York Are Invasive?

Posted January 30, 2010 by nyflora
Categories: Invasive Species

These are results from the committee to assess the invasiveness of plants in New York State run by Marilyn Jordan of The Nature Conservancy on Long Island and Gerry Moore from the Brooklyn Botanic Garden.

The number of persisting non-native species in New York is 1405.
The number of persisting non-native species assessed as having a High or Very High invasive nature in New York as of January 2010 is 68.

So we can say that a minimum of ~5% of persisting non-native plant species in NYS are invasive.

Any increase in number of species assessed as invasive, or decrease in the number of non-native species thought to be persisting, would increase the calculated % invasive. It is possible (though probably less likely) that the number of non-native species assessed as invasive could decrease in the future, based on new information or interpretations of questions in the assessment form.

Marilyn J. Jordan, Ph.D.
Senior Conservation Scientist
The Nature Conservancy on Long Island

Rails to Trails And The Need for Botanical Surveys.

Posted January 29, 2010 by nyflora
Categories: Field Techniques, Natural History, Plant Distribution, Rare Plant Surveys

The link below shows the need for complete botanical surveys when old railroads are converted to trails for the public. The article is by Steve Daniel who has had experience with a trail conversion near Rochester. The article also appeared in a recent issue of the NYFA News – Steve Young

http://www.saveauburntrail.org/home/not-an-ordinary-rail-bed

New Book: Designing Gardens with Flora of the American East

Posted January 26, 2010 by nyflora
Categories: Publications, Apps, and Websites

Designing Gardens with Flora of the American East
Carolyn Summers, with illustrations by Michele Hertz

Gardeners are endowed with love for a hobby that has profound potential for positive change. The beautifully-illustrated Designing Gardens with Flora of the American East approaches landscape design from an ecological perspective, encouraging professional designers and backyard enthusiasts alike to intensify their use of indigenous or native plants. These plants, ones that grow naturally in the same place in which they evolved, form the basis of the food web. Wildlife simply cannot continue to survive without them—nor can we. Summers introduces our wild flora into designs for common garden landscapes, such as foundation plantings, mixed borders, even formal knot gardens.

Emphasizing the importance of indigenous plant gardening and landscape design, Summers provides guidelines for beginning gardeners as well as experienced designers.
She highlights . . .
an in-depth scientific, coherent argument for the necessity of using indigenous plants in cultivated landscapes concrete design guidance, including actual designs, along with trees, shrubs, groundcovers, and other showy substitutes for invasive plants the best ways to use exotic plants responsibly, including controlling plant reproduction, choosing cultivars and hybrids, and more joys of “safe sex in the garden”
practical issues of finding and purchasing native plants.

From Maine to Kentucky and up and down the eastern shore, Designing Gardens with Flora of the American East lays the “gardenwork”—by preserving natural areas through the thoughtful planting of indigenous plants, we may bask in the knowledge that it is possible to have loads of fun at the same time we are growing a better world.

Rutgers University Press
224 pages * 16 color and 62 black and white photographs, 9 illustrations, and 26 tables * 6 x 9
978-0-8135-4707-7 * Paper * $23.95
978-0-8135-4706-0 * Cloth * $39.95

Winter 2010 Electronic NYFA Newsletter Sent Out Today

Posted January 22, 2010 by nyflora
Categories: NY Flora Association, Publications, Apps, and Websites

Remember, an electronic membership has the added advantage of delivery before paper copies are sent out and includes full color photographs. You can also simply click on web addresses instead of typing them into your browser. Convert to electronic membership the next time you renew. You will be glad you did.

The Crum Bryological Workshop for 2010 Announced

Posted January 22, 2010 by nyflora
Categories: Bryophytes, Field Trips

The Crum Workshop will be held this year in Tobermory, Ontario, Canada, at the very tip of the Bruce Peninsula, sticking out into Lake Huron, on September 23-28, 2010. Save the dates. There will be more information later in the year about facilities, etc. Our local representative is Jennifer Doubt (jdoubt@mus-nature.ca).

William R. Buck
Institute of Systematic Botany
New York Botanical Garden
Bronx, NY 10458-5126, U.S.A.

phone: 718-817-8624
fax: 718-817-8648
e-mail: bbuck@nybg.org

New County-Level Maps of North American Flora Available

Posted January 20, 2010 by nyflora
Categories: Plant Distribution

Yesterday afternoon, we launched our complete set of county-level maps of the North American vascular flora on our BONAP website (www.bonap.org). We have also updated the data of our Digital North American Flora page. Although we are painfully aware of the prolonged delay in loading maps for large genera, until additional programming can be performed to ameliorate this problem, this is the best we can offer. Please let us know what you think and keep watching this site for major changes.

Sincerely,
John

Dr. John Kartesz, Director
BONAP
9319 Bracken Lane
Chapel Hill, NC 27516

(919) 967-6240

Homer House’s 1918 Wildflowers of NY online

Posted January 16, 2010 by nyflora
Categories: Publications, Apps, and Websites

This beautiful treatment of New York’s wildflowers can be found at http://chestofbooks.com/flora-plants/flowers/Wild-Flowers-New-York/index.html

Electronic Newsletter Winter 09 Sent Out Today

Posted December 12, 2009 by nyflora
Categories: NY Flora Association

Remember, an electronic membership has the added advantage of delivery before paper copies are sent out and includes full color photographs. You can also simply click on web addresses instead of typing them into your browser. Convert to electronic membership the next time you renew. You will be glad you did.

A New Take on Tree Leaves

Posted November 19, 2009 by nyflora
Categories: Natural History

See the following article on the biodiversity of leaves from another angle.
http://niemann.blogs.nytimes.com/2009/11/17/bio-diversity/?hp

NYFA Flora Atlas Search Tip

Posted November 18, 2009 by nyflora
Categories: Plant Identification

Instead of typing the whole scientific name in for a species, just type the last 3 letters of the genus followed by a space and first 3 letters of the species. This will generate a list of one or a few species that you can click on.