Navigation Links
BP Deepwater Horizon oil spill exacerbated existing environmental problems in Louisiana marshes
Date:6/25/2012

d, the researchers found that the tall grasses along the marsh edge acted as wall-like trap to incoming oil slicks, concentrating oil on the marsh edge. This concentration of oil on the shoreline protected interior marshes from oiling but worsened already extreme erosion on the shoreline. As oiled plants died, their roots that hold tight to the sediment perished as well. Already eroding sediment was now exposed to wave action without the effect of the gripping plant roots.

The result: elevated erosion rates for 1.5 years that averaged more than 10 feet of shoreline loss per year -- double the natural rate for this area.

The encouraging results, Silliman said, included significant declines in the oil concentration on the marsh surface over 1.5 years and that unaffected, healthy marsh plants in the marsh interior quickly grew back into marsh die-off areas that had not yet been lost due to heightened erosion.

When the new marsh plant growth grew into the erosive edge of the marsh, Silliman said, the recolonization of the area by the gripping plant roots shut down the oil-elevated erosion rates and returned them to those seen at marsh sites where oil coverage did not occur.

The researchers also found that polyaromatic hydrocarbons, or PAHs, a carcinogenic byproduct of oil, was 100 percent greater at the Barateria Bay testing site than in reference marshes. This finding provides chemical evidence to support their visual observations that marshes in the affected areas were laden with oil while those in reference areas did not receive significant oiling.

By adding Biochar, a charcoal-based substance, to marshlands, Silliman's team is also using new bioremediation tactics to try to break down PAHs into organic material. If this method is successful, he said, it could be used to supplement naturally occurring microbes in the marsh mud that already oxidize the oil carcinogen. The team is soon to publish those findings.


'/>"/>
Contact: Brian Silliman
brs@ufl.edu
University of Florida
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Study confirms oil from Deepwater Horizon disaster entered food chain in the Gulf of Mexico
2. Study by Haverford College professor reveals unprecedented impact of Deepwater Horizon on deep ocean
3. Microbial communities shifted dramatically after Deepwater Horizon spill
4. Waves of Berkeley Lab responders deploy omics to track Deepwater Horizon cleanup microbes
5. Westpak Deploys Horizontal Impact Test System (HITS)
6. Trouble on the horizon for GM crops?
7. Crabs, insects and spiders vulnerable to oil spill, but also resilient
8. University of Houston study shows BP oil spill hurt marshes, but recovery possible
9. Researchers call for a new direction in oil spill research
10. Marine scientists urge government to reassess oil spill response
11. NCEAS researchers offer new ecological model for deep-water oil spills
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:9/16/2014)... Columbia Center for Children,s Environmental Health at the Mailman ... an association between childhood asthma and prenatal exposure to ... products. Results appear online in the journal Environmental ... exposed during pregnancy to higher levels of the chemicals, ... 72 percent and 78 percent increase in risk of ...
(Date:9/16/2014)... 17, 2014)The North American Menopause Society (NAMS) has ... care of midlife womenon everything from hot flashes ... American Menopause Society Recommendations for Clinical Care of ... Society,s journal Menopause . This is the ... care of midlife women freely available to all ...
(Date:9/16/2014)... "molecular brakes" that time the generation of important cells ... cells" translate sound waves into electrical signals that are ... If the arrangement of the cells is disordered, hearing ... will be published in The Journal of Neuroscience ... Hey2 act as brakes to prevent hair cell generation ...
Breaking Biology News(10 mins):Phthalates heighten risk for childhood asthma 2Phthalates heighten risk for childhood asthma 3Hey1 and Hey2 ensure inner ear 'hair cells' are made at the right time, in the right place 2
... Suppressing a cellular cleanup-mechanism known as autophagy can ... neural degeneration. In an upcoming issue of Autophagy, scientists ... the first time that the opposite is true as ... flies prevented the age-dependent accumulation of cellular damage in ...
... lifeless lakeshore lapped by waves, floating algae learned to survive ... the Earth into a green paradise. The secrets of ... to the sequencing of a modern descendent of these first ... on recently exposed shorelines, quickly fruits, and then dies. ...
... collection of genes the genome of a ... link between single-celled algae and flowering plants. Just ... understand human genomic history, the sequencing of plant genomes ... kingdom, according to Ralph S. Quatrano, Ph.D., the Spencer ...
Cached Biology News:Aging gracefully requires taking out the trash 2Aging gracefully requires taking out the trash 3Moss genome shows how plants invaded the land and learned to survive heat and drought 2Moss genome shows how plants invaded the land and learned to survive heat and drought 3WUSTL researchers spearhead key genome initiative 2WUSTL researchers spearhead key genome initiative 3WUSTL researchers spearhead key genome initiative 4
(Date:9/17/2014)... GLASGOW, Scotland , September 17, 2014 ... a new mode of action from a ... a decade  MGB Biopharma, a ... of anti-infectives, announces today that it has ... of its lead antibacterial, MGB-BP-3, against a ...
(Date:9/16/2014)... Washington, USA (PRWEB) September 16, 2014 ... to create the features that we desire in optical ... Center at Montana State University. “As we explore surfaces ... Some of those lessons were presented in San Diego ... of Light: Light in Nature ” chaired by Shaw ...
(Date:9/16/2014)... 16, 2014 --The emerging field of molecular electronics ... next level, enabling the construction of tiny circuits ... individual molecules would take on the roles currently ... A team of researchers from five Japanese and ... use in small-scale electronics: a molecule called picene. ...
(Date:9/16/2014)... HILL, N.C. , Sept. 16, 2014 ... experimental heart failure compound has been shown to be ... preclinical results demonstrate an alternative to intravenous infusions that ... HNO prodrugs. The data were presented yesterday at the ... Annual Scientific Meeting in Las Vegas ...
Breaking Biology Technology:MGB Biopharma Secures £4.0m ($6.4m) to Advance its Novel Lead Antibacterial, MGB-BP-3, into Clinical Development 2MGB Biopharma Secures £4.0m ($6.4m) to Advance its Novel Lead Antibacterial, MGB-BP-3, into Clinical Development 3MGB Biopharma Secures £4.0m ($6.4m) to Advance its Novel Lead Antibacterial, MGB-BP-3, into Clinical Development 4MGB Biopharma Secures £4.0m ($6.4m) to Advance its Novel Lead Antibacterial, MGB-BP-3, into Clinical Development 5MGB Biopharma Secures £4.0m ($6.4m) to Advance its Novel Lead Antibacterial, MGB-BP-3, into Clinical Development 6MGB Biopharma Secures £4.0m ($6.4m) to Advance its Novel Lead Antibacterial, MGB-BP-3, into Clinical Development 7Nature’s designs inspire research into new light-based technologies 2Nature’s designs inspire research into new light-based technologies 3Nature’s designs inspire research into new light-based technologies 4Nature’s designs inspire research into new light-based technologies 5The future face of molecular electronics 2Cardioxyl Presents Oral Heart Failure Treatment Data For Its Experimental HNO Prodrug At HFSA 18th Annual Scientific Meeting 2
... a leading global,full-service contract research organization, announced it ... Clinical Pharmacology., Dr. Wei joins Medpace with ... early phase cardio-metabolic studies. He will consult,with sponsors ... to which studies merit inclusion in the programs ...
... today announced that it has appointed Mr. Jorge,Cantonnet to ... effective as of 1 February 2008. Mr. Cantonnet is ... agro-biotechnology company listed on OTCBB in Dec 2007,(OTC Bulletin ... million in fiscal year ended 30 September 2007, with ...
... and SAN DIEGO, Jan. 31 /PRNewswire-FirstCall/ - MIGENIX ... drugs for infectious,diseases, will add a 600mg celgosivir ... viral kinetics study in hepatitis C virus,("HCV") treatment-naive ... Health Canada and Institutional Review Board (IRB) approvals. ...
Cached Biology Technology:Medpace Hires Clinical Pharmacologist, Jim Wei, MD, PhD 2China Agro-Technology Appoints New CEO 2China Agro-Technology Appoints New CEO 3MIGENIX to Add 600mg Daily Celgosivir Dose to Phase II Viral Kinetics Study 2MIGENIX to Add 600mg Daily Celgosivir Dose to Phase II Viral Kinetics Study 3MIGENIX to Add 600mg Daily Celgosivir Dose to Phase II Viral Kinetics Study 4MIGENIX to Add 600mg Daily Celgosivir Dose to Phase II Viral Kinetics Study 5MIGENIX to Add 600mg Daily Celgosivir Dose to Phase II Viral Kinetics Study 6
RAT ANTI MOUSE F4/80 ANTIGEN:BIOTIN Immunogen: Thioglycollate stimulated peritoneal macrophages from C57/BL mice...
SHEEP ANTI FLECAINIDE...
ANTI PIG LDH H4...
RAT ANTI MOUSE F4/80 ANTIGEN:BIOTIN Immunogen: Thioglycollate stimulated peritoneal macrophages from C57/BL mice...
Biology Products: