Featured Research

from universities, journals, and other organizations

Amphibians' Life Stages Influence Contaminant Transfer From Aquatic To Terrestrial Environments

Date:
August 1, 2003
Source:
University Of Georgia
Summary:
Scientists at the University of Georgia's Savannah River Ecology Laboratory have taken the first step toward understanding how variations in the life stages of amphibians may influence contaminant transfer from aquatic to terrestrial environments.

Scientists at the University of Georgia's Savannah River Ecology Laboratory have taken the first step toward understanding how variations in the life stages of amphibians may influence contaminant transfer from aquatic to terrestrial environments.

Related Articles


Using bullfrog larvae from a coal combustion waste-settling basin, the scientists investigated the effects of both developmental stage and the timing of metamorphosis on the concentrations of a series of trace elements in bullfrog tissues. Four stages in all were examined as were both spring and fall metamorphs. The work has just been published in Environmental Toxicology and Chemistry.

"Elimination or retention of trace elements through metamorphosis not only has important implications for the health of recent metamorphs, but also determines the quantities of contaminants leaving the aquatic environment and entering the terrestrial food webs," said William Hopkins, one of the researchers.

Juvenile and adult amphibians are often abundant in aquatic and terrestrial systems and are important prey items in the diets of birds and reptiles, according to Hopkins. He said body burdens of some contaminants, such as selenium and strontium, are retained through metamorphosis and they may be transferred into terrestrial food webs from wetland systems where they are thought to be sequestered. He said more study on the topic is needed. He is planning laboratory experiments that control exposure conditions and duration as a next step.

Joel W. Snodgrass of Towson University and John Roe of Rutgers University are Hopkin's co-authors. SREL is located on the U.S. Department of Energy's (DOE) Savannah River Site (SRS) and the research was funded by a grant from DOE-Office of Biological and Environmental Research, Environmental Remediation Sciences Division (ERSD) to identify, understand and anticipate the long-term health and environmental consequences of energy production, development, and use. The SRS is a former nuclear production facility and a federally designated National Environmental Research Park located near Aiken, S.C.


Story Source:

The above story is based on materials provided by University Of Georgia. Note: Materials may be edited for content and length.


Cite This Page:

University Of Georgia. "Amphibians' Life Stages Influence Contaminant Transfer From Aquatic To Terrestrial Environments." ScienceDaily. ScienceDaily, 1 August 2003. <www.sciencedaily.com/releases/2003/07/030724081834.htm>.
University Of Georgia. (2003, August 1). Amphibians' Life Stages Influence Contaminant Transfer From Aquatic To Terrestrial Environments. ScienceDaily. Retrieved November 23, 2014 from www.sciencedaily.com/releases/2003/07/030724081834.htm
University Of Georgia. "Amphibians' Life Stages Influence Contaminant Transfer From Aquatic To Terrestrial Environments." ScienceDaily. www.sciencedaily.com/releases/2003/07/030724081834.htm (accessed November 23, 2014).

Share This


More From ScienceDaily



More Earth & Climate News

Sunday, November 23, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Ebola-Hit Sierra Leone's Late Cocoa Leaves Bitter Taste

Ebola-Hit Sierra Leone's Late Cocoa Leaves Bitter Taste

AFP (Nov. 23, 2014) The arable district of Kenema in Sierra Leone -- at the centre of the Ebola outbreak in May -- has been under quarantine for three months as the cocoa harvest comes in. Duration: 01:32 Video provided by AFP
Powered by NewsLook.com
Anglerfish Rarely Seen In Its Habitat Will Haunt You

Anglerfish Rarely Seen In Its Habitat Will Haunt You

Newsy (Nov. 22, 2014) For the first time Monterey Bay Aquarium recorded a video of the elusive, creepy and rarely seen anglerfish. Video provided by Newsy
Powered by NewsLook.com
Raw: Buffalo Residents Digging Out, Helping out

Raw: Buffalo Residents Digging Out, Helping out

AP (Nov. 22, 2014) Hundreds of volunteers joined a 'shovel brigade' in Buffalo, New York on Saturday, as the city was living up to its nickname, "The City of Good Neighbors." Video provided by AP
Powered by NewsLook.com
Toyota's Hydrogen Fuel-Cell Green Car Soon Available in the US

Toyota's Hydrogen Fuel-Cell Green Car Soon Available in the US

AFP (Nov. 21, 2014) Toyota presented its hydrogen fuel-cell compact car called "Mirai" to US consumers at the Los Angeles auto show. The car should go on sale in 2015 for around $60.000. It combines stored hydrogen with oxygen to generate its own power. Duration: 01:18 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