Featured Research

from universities, journals, and other organizations

When eradicating invasive species threatens endangered species recovery

Date:
May 29, 2014
Source:
University of California - Davis
Summary:
Efforts to eradicate invasive species increasingly occur side by side with programs focused on recovery of endangered ones. But what should resource managers do when the eradication of an invasive species threatens an endangered species? In a new study, scientists examine that conundrum now taking place in the San Francisco Bay.

A California Clapper Rail stands beside invasive Spartina, a salt marsh cordgrass, in San Francisco Bay. The endangered bird is threatened by both the removal and existence of the invasive plant.
Credit: Robert Clark

Efforts to eradicate invasive species increasingly occur side by side with programs focused on recovery of endangered ones. But what should resource managers do when the eradication of an invasive species threatens an endangered species?

Related Articles


In a new study published May 30 in the journal Science, researchers at the University of California, Davis examine that conundrum now taking place in the San Francisco Bay. The California Clapper Rail -- a bird found only in the Bay -- has come to depend on an invasive salt marsh cordgrass, hybrid Spartina, for nesting habitat. Its native habitat has slowly vanished over the decades, largely due to urban development and invasion by Spartina.

Their results showed that, rather than moving as fast as possible with eradication and restoration, the best approach is to slow down the eradication of the invasive species until restoration or natural recovery of the system provides appropriate habitat for the endangered species.

"Just thinking from a single-species standpoint doesn't work," said co-author and UC Davis environmental science and policy professor Alan Hastings. "The whole management system needs to take longer, and you need to have much more flexibility in the timing of budgetary expenditures over a longer time frame."

The scientists combined biological and economic data for Spartina and the Clapper Rail to develop a modeling framework to balance conflicting management goals, including endangered species recovery and invasive species removal, given budgetary constraints.

While more threatened and endangered species are becoming dependent on invasive species for habitat and food, examples of the study's specific conflict are rare. The only other known case where the eradication of an invasive species threatened to compromise the recovery of an endangered one is in the southwestern United States, where a program to eradicate Tamarisk was cancelled in areas where the invasive tree provides nesting habitat for the endangered Southwestern Willow Fly-catcher.

"As eradication programs increase in number, we expect this will be a more common conflict in the future," said co-author and UC Davis professor Ted Grosholz.

The scientists used data from Grosholz's lab as well as from the Invasive Spartina Project of the California Coastal Conservancy in their analysis.

Spartina alterniflora was introduced to the San Francisco Bay in the mid-1970s by the Army Corps of Engineers as a method to reclaim marshland. It hybridized with native Spartina and invaded roughly 800 acres. Eradication of hybrid Spartina began in 2005, and about 92 percent of it has been removed from the Bay. The cordgrass has also invaded areas of Willapa Bay in Washington State, where efforts to eradicate it are nearly complete, and invasive Spartina has been spotted and removed from Tomales Bay, Point Reyes and Bolinas Lagoon in California.

The study, led by UC Davis postdoctoral fellow Adam Lampert, was funded by the National Science Foundation Dynamics of Coupled Natural and Human Systems Program.

Co-authors include UC Davis environmental science and policy professor James Sanchirico and Sunny Jardine, a PhD student at UC Davis during the study and currently assistant professor at University of Delaware.

"This work is significant in advancing a general, analytical framework for cost-effective management solutions to the common conflict between removing invasive species and conserving biodiversity," said Alan Tessier, program director in the National Science Foundation Division of Environmental Biology.


Story Source:

The above story is based on materials provided by University of California - Davis. Note: Materials may be edited for content and length.


Journal Reference:

  1. A. Lampert, A. Hastings, E. D. Grosholz, S. L. Jardine, J. N. Sanchirico. Optimal approaches for balancing invasive species eradication and endangered species management. Science, 2014; 344 (6187): 1028 DOI: 10.1126/science.1250763

Cite This Page:

University of California - Davis. "When eradicating invasive species threatens endangered species recovery." ScienceDaily. ScienceDaily, 29 May 2014. <www.sciencedaily.com/releases/2014/05/140529142346.htm>.
University of California - Davis. (2014, May 29). When eradicating invasive species threatens endangered species recovery. ScienceDaily. Retrieved April 18, 2015 from www.sciencedaily.com/releases/2014/05/140529142346.htm
University of California - Davis. "When eradicating invasive species threatens endangered species recovery." ScienceDaily. www.sciencedaily.com/releases/2014/05/140529142346.htm (accessed April 18, 2015).

Share This


More From ScienceDaily



More Plants & Animals News

Saturday, April 18, 2015

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Un-Bee-Lievable: Bees on the Loose After Washington Truck Crash

Un-Bee-Lievable: Bees on the Loose After Washington Truck Crash

Reuters - US Online Video (Apr. 17, 2015) — A truck carrying honey bees overturns near Lynnwood, Washington, spreading boxes of live bees across the highway. Rough Cut (no reporter narration). Video provided by Reuters
Powered by NewsLook.com
Our Love Of Puppy Dog Eyes Explained By Science

Our Love Of Puppy Dog Eyes Explained By Science

Newsy (Apr. 17, 2015) — Researchers found a spike in oxytocin occurs in both humans and dogs when they gaze into each other&apos;s eyes. Video provided by Newsy
Powered by NewsLook.com
Dog Flu Spreading in Midwestern States

Dog Flu Spreading in Midwestern States

AP (Apr. 17, 2015) — Dog flu is spreading in several Midwestern states. Dog daycare centers and veterinary offices are taking precautions. (April 17) Video provided by AP
Powered by NewsLook.com
Raw: Rare Whale Spotted in Gulf of Mexico

Raw: Rare Whale Spotted in Gulf of Mexico

AP (Apr. 17, 2015) — Researchers from the E/V Nautilus had quite a surprise Tuesday, when a curious sperm whale swam around their remotely operated vehicle in the Gulf of Mexico. Cameras captured the encounter. (April 17) Video provided by AP
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