Featured Research

from universities, journals, and other organizations

Offshore dispersant data and decisions

Date:
March 6, 2014
Source:
Society of Environmental Toxicology and Chemistry
Summary:
A critical review of the literature seeks to ease the understanding of data used in the decision process for offshore dispersant use.

Dispersants are often used in oil spill responses because they may mitigate the environmental impacts of the spill by moving the oil from the water surface into the water column enhancing its biodegradation. While this process helps reduce the likelihood of oil exposure to marine wildlife such as seabirds and marine mammals, aquatic toxicity on marine communities from the dispersant and the chemically dispersed oil needs to be considered more carefully.

Related Articles


Scientists at Research Planning, Inc. and HDR Ecosystem Management evaluated the standard toxicity testing data used to inform dispersant decisions and published a critical review of their findings in the scientific journal Environmental Toxicology and Chemistry in March 2014. The authors found issues with the current practices, and lead author Adriana Bejarano notes, "Despite concerted efforts by the spill response community to propose and promote discussions on better laboratory practices, studies are still performed without consideration of such recommendations." Laboratory tests frequently used by decision makers do not adequately replicate the conditions in the field, such as sea state and weather, nor do they necessarily consider exposure durations (short-term vs. standard exposure) and concentrations (steady concentrations vs. spiked concentrations).

Bejarano's goal was to bring to light some of the common misconceptions and challenges in existing data, and to encourage decision makers to consider data quality when making decisions on the use of dispersants. "Data comparability is difficult because of the mixed messages coming from the scientific literature. Many believe that dispersants make oil more toxic, when in reality existing data generally do not support these claims. Being critical would be beneficial to the entire decision-making process."


Story Source:

The above story is based on materials provided by Society of Environmental Toxicology and Chemistry. Note: Materials may be edited for content and length.


Journal Reference:

  1. Adriana C. Bejarano, James R. Clark, Gina M. Coelho. Issues and challenges with oil toxicity data and implications for their use in decision making: A quantitative review. Environmental Toxicology and Chemistry, 2014; DOI: 10.1002/etc.2501

Cite This Page:

Society of Environmental Toxicology and Chemistry. "Offshore dispersant data and decisions." ScienceDaily. ScienceDaily, 6 March 2014. <www.sciencedaily.com/releases/2014/03/140306095400.htm>.
Society of Environmental Toxicology and Chemistry. (2014, March 6). Offshore dispersant data and decisions. ScienceDaily. Retrieved February 26, 2015 from www.sciencedaily.com/releases/2014/03/140306095400.htm
Society of Environmental Toxicology and Chemistry. "Offshore dispersant data and decisions." ScienceDaily. www.sciencedaily.com/releases/2014/03/140306095400.htm (accessed February 26, 2015).

Share This


More From ScienceDaily



More Earth & Climate News

Thursday, February 26, 2015

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Winter Storm Means Dangerous Driving in South

Winter Storm Means Dangerous Driving in South

AP (Feb. 26, 2015) A new winter storm is stretching across the south, making travel treacherous throughout the region. (Feb. 26) Video provided by AP
Powered by NewsLook.com
New York City Surrounded by Ice Floes

New York City Surrounded by Ice Floes

AP (Feb. 25, 2015) The freezing temperatures that have plagued much of the eastern U.S. haven&apos;t spared New York City. The waterways around the island of Manhattan are filled with ice. (Feb. 25) Video provided by AP
Powered by NewsLook.com
Raw: Widespread Flooding in Northern Bolivia

Raw: Widespread Flooding in Northern Bolivia

AP (Feb. 25, 2015) Bolivian Vice President Alvaro Garcia surveyed severe flood damage in the northern province of Pando, as people were evacuated from partially submerged houses by boat. (Feb. 25) Video provided by AP
Powered by NewsLook.com
The Amazon Keeps Its Green Thanks To The Sahara Desert

The Amazon Keeps Its Green Thanks To The Sahara Desert

Newsy (Feb. 25, 2015) Satellite data shows the Amazon rainforest supports its lush flora with a little help from Sahara Desert dust. 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