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.

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 October 1, 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 October 1, 2014).

Share This



More Earth & Climate News

Wednesday, October 1, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Raw: Trapped Scientist Rescued from Cave in Peru

Raw: Trapped Scientist Rescued from Cave in Peru

AP (Oct. 1, 2014) A Spanish scientist, who spent 12 days trapped about 1300 feet underground in a cave in Peru's remote Amazon region, was rescued on Tuesday. (Oct. 1) Video provided by AP
Powered by NewsLook.com
Earth Has Lost Half Its Vertebrate Wildlife Since 1970: WWF

Earth Has Lost Half Its Vertebrate Wildlife Since 1970: WWF

Newsy (Sep. 30, 2014) A new study published by the World Wide Fund for Nature found that more than half of the world's wildlife population has declined since 1970. Video provided by Newsy
Powered by NewsLook.com
Seismic Activity Halts Recovery at Japan Volcano

Seismic Activity Halts Recovery at Japan Volcano

AP (Sep. 30, 2014) Rescuers were forced to suspend plans to recover at least two dozen bodies from near the summit of Mount Ontake in central Japan on Tuesday after increased seismic activity raised concern about the possibility of another eruption. (Sept. 30) Video provided by AP
Powered by NewsLook.com
Dolphins Might Use Earth's Magnetic Field As A GPS

Dolphins Might Use Earth's Magnetic Field As A GPS

Newsy (Sep. 30, 2014) A study released Monday suggests dolphins might be able to sense the Earth's magnetic field and possibly use it as a means of navigation. Video provided by Newsy
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