Featured Research

from universities, journals, and other organizations

How To Keep Invasive Plants Out Of Forest Fragments

Date:
March 14, 2001
Source:
Society For Conservation Biology
Summary:
Fragmented habitat is vulnerable partly because it has more edges, which are susceptible to invasion by non-native species. While the obvious solution of minimizing the amount of edge is not always feasible, there may be another effective approach: intact edges can help keep seeds out of the forest interior, according to new research in the February issue of Conservation Biology.

Fragmented habitat is vulnerable partly because it has more edges, which are susceptible to invasion by non-native species. While the obvious solution of minimizing the amount of edge is not always feasible, there may be another effective approach: intact edges can help keep seeds out of the forest interior, according to new research in the February issue of Conservation Biology.

"Our work addresses the impact of forest fragmentation at the 'neighborhood' scale -- what happens when developers put up a new strip mall or housing complex. The development of our landscapes continually fragments forests and [that] should be considered when thinking about the distribution and degree of aggregation of homes," says Mary Cadenasso of the Institute for Ecosystem Studies in Milbrook, New York, who did this work with Steward Pickett of the same institution.

Cadenasso and Pickett measured how many seeds blew from an old field into an adjacent deciduous forest patch, a common type of edge in New England. The researchers studied seeds that are dispersed by the wind because many invasive plants have wind-borne seeds. To see how the forest edge's structure affected seed invasion, the researchers compared two types of edges: intact and thinned. They created 130 feet of thinned edge by removing all trees, shrubs and branches that were less than half the height of the forest canopy; this thinning extended 65 feet into the forest patch. The resulting thinned edge resembled that created by logging or a large blowdown.

The researchers found that four times as many wind-borne seeds crossed the thinned edge than the intact edge. They also found that seeds crossing the thinned edge penetrated 2.5 times deeper into the forest (145 feet into the "thinned edge" forest vs. 55 feet across the "intact edge" forest).

To help protect forest fragments from invasive weeds, Cadenasso and Pickett recommend "sealing" the edge by planting it densely with native shrubs, vines and understory trees, as well as removing non-native plants from the edge.


Story Source:

The above story is based on materials provided by Society For Conservation Biology. Note: Materials may be edited for content and length.


Cite This Page:

Society For Conservation Biology. "How To Keep Invasive Plants Out Of Forest Fragments." ScienceDaily. ScienceDaily, 14 March 2001. <www.sciencedaily.com/releases/2001/03/010308072346.htm>.
Society For Conservation Biology. (2001, March 14). How To Keep Invasive Plants Out Of Forest Fragments. ScienceDaily. Retrieved September 23, 2014 from www.sciencedaily.com/releases/2001/03/010308072346.htm
Society For Conservation Biology. "How To Keep Invasive Plants Out Of Forest Fragments." ScienceDaily. www.sciencedaily.com/releases/2001/03/010308072346.htm (accessed September 23, 2014).

Share This



More Plants & Animals News

Tuesday, September 23, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Cat Lovers Flock to Los Angeles

Cat Lovers Flock to Los Angeles

AFP (Sep. 22, 2014) The best funny internet cat videos are honoured at LA's Feline Film Festival. Duration: 00:56 Video provided by AFP
Powered by NewsLook.com
Washed-Up 'Alien Hairballs' Are Actually Algae

Washed-Up 'Alien Hairballs' Are Actually Algae

Newsy (Sep. 22, 2014) Green balls of algae washed up on Sydney, Australia's Dee Why Beach. Video provided by Newsy
Powered by NewsLook.com
Raw: San Diego Zoo Welcomes Cheetah Cubs

Raw: San Diego Zoo Welcomes Cheetah Cubs

AP (Sep. 20, 2014) The San Diego Zoo has welcomed two Cheetah cubs to its Safari Park. The nearly three-week-old female cubs are being hand fed and are receiving around the clock care. (Sept. 20) Video provided by AP
Powered by NewsLook.com
Chocolate Museum Opens in Brussels

Chocolate Museum Opens in Brussels

AFP (Sep. 19, 2014) Considered a "national heritage" in Belgium, chocolate now has a new museum in Brussels. In a former chocolate factory, visitors to the permanent exhibition spaces, workshops and tastings can discover derivatives of the cocoa bean. Duration: 01:00 Video provided by AFP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Plants & Animals

Earth & Climate

Fossils & Ruins

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins