Navigation Links
Sewage-derived nitrogen increasingly polluting Caribbean ecosystems
Date:5/16/2011

Nitrogen pollution in our coastal ecosystems, the result of widespread use of synthetic agricultural fertilizers and of human sewage, leads to decreased water transparency, the loss of desirable fish species, and the emergence of toxic phytoplankton speciessuch as the algae behind the renowned "red tides" that kill fish.

The effects are particularly pronounced in the Gulf of Mexico and the Caribbean.

A study published in the journal Global Change Biology finds that while fertilizer has been the dominant source of nitrogen pollution in Caribbean coastal ecosystems for the past 50 years, such pollution is on the decline, thanks in part to the introduction of more advanced, environmentally responsible agricultural practices during the last decade. But now, sewage-derived nitrogen is increasingly becoming the top source of such pollution in those areas.

"We can't simply say our coastal ecosystem is being polluted by nitrogen," said Kiho Kim, one of the study's authors and chair of environmental science at American University. "The consequences may be the same, but differentiating the source of the pollutants is critical to crafting sustainable solutionsyou can't fix a problem if you don't know what's causing it."

Through a chemical analysis of 300 coral samples from the Smithsonian Institution's National Museum of Natural History's Invertebrate Zoology Collection, Kim and some American University graduate students reconstructed a record of nitrogen inputs into the Caribbean over the last 150 years. Agricultural and sewage pollution create different signatures in organisms like coral.

"We determined that poor stormwater management and wastewater treatment were really to blame over the last decade for nitrogen pollution in the Caribbean," said Kim. "Our next step is to document this process in action."

To do this, Kim will focus on coral samples from the coastal areas of Guam, a small Pacific island that
'/>"/>

Contact: Maggie Barrett
barrett@american.edu
202-885-5951
American University
Source:Eurekalert  

Page: 1 2

Related biology news :

1. Book looks at interrelationships among nitrogen, plants and the environment
2. Excessive nitrogen harms the economy and environment -- first Europe-wide assessment published
3. Improving nitrogen use efficiency lessens environmental impact
4. High nitrogen fertilizers tested on post-transplant ornamentals
5. Dodds contributes to new national study on nitrogen water pollution
6. New study focuses on nitrogen in waterways as cause of nitrous oxide in the atmosphere
7. New way of removing excess nitrogen from the environment
8. Elevated nitrogen and phosphorus still widespread in much of the nations streams and groundwater
9. CEAP study examines nitrogen, copper levels in Bay watershed
10. Forest fires help power the nitrogen cycle
11. Nitrogen pollution alters global change scenarios from the ground up
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Sewage-derived nitrogen increasingly polluting Caribbean ecosystems
(Date:8/28/2014)... 2014A new method for measuring and imaging how quickly ... researchers better understand how drug abuse affects the brain, ... engineering, and lead to better treatment options for recovering ... of researchers from Stony Brook University in New York, ... published today in The Optical Society,s (OSA) open-access journal ...
(Date:8/28/2014)... 25 million kilometres of new roads will be built ... into Earth,s last wildernesses, where they bring an influx ... Now, an ambitious study has created a ,global roadmap, ... to balance the competing demands of development and environmental ... layer that estimates that natural importance of ecosystems and ...
(Date:8/28/2014)... pose a significant health risk to people with asthma according ... Allergy and Clinical Immunology . , By critically reviewing the ... has found that the presence of several types of mould ... as increasing the likelihood of developing the condition. , The ... of Exeter Medical School and is the first time all ...
Breaking Biology News(10 mins):This is your brain's blood vessels on drugs 2This is your brain's blood vessels on drugs 3Study shows where on the planet new roads should and should not go 2Study shows where on the planet new roads should and should not go 3Indoor mold poses health risk to asthma sufferers 2
... might not know what it,s called, but if you,ve ... it is likely you have received Sellick,s maneuver. That,s ... prevent regurgitation and spilling of stomach contents into the ... Such regurgitation could result in serious lung damage and ...
... researchers from the United States, Korea, and France has sequenced ... E. coli bacteria, one used to study evolution ... practical applications. The findings will help guide future research and ... classical research that is the foundation of our understanding of ...
... New research released today is affirming a long-held maxim: you ... what you eat has a profound influence on the brain. ... obesity epidemic in the United States and other developed countries. ... and weight gain, and were reported at Neuroscience 2009, the ...
Cached Biology News:UF scientists discover new explanation for controversial old patient-care technique 2UF scientists discover new explanation for controversial old patient-care technique 3Genomes of 2 popular research strains of E. coli sequenced 2Genomes of 2 popular research strains of E. coli sequenced 3Think what you eat: Studies point to cellular factors linking diet and behavior 2
(Date:8/28/2014)... DIEGO, California, USA (PRWEB) August 28, 2014 ... the Department of Physics and Optical Science and Director ... the University of North Carolina at Charlotte, and co-founder ... been elected to serve as the 2015 Vice President ... , SPIE 2014 President Philip Stahl announced recent election ...
(Date:8/28/2014)... in spintronics, an electronic which is not only ... on their spin and the spin-related magnetism. Spin-charge ... signals and vice versa. Recently, the research group ... Physics at Johannes Gutenberg University Mainz in collaboration ... has for the first time realised a new, ...
(Date:8/28/2014)... 28, 2014 Sterlitech is proud to ... to its stable of products . These ... cut-offs and include membrane filters with surface charges. ... customer demand for our membrane process testing equipment, and ... flat sheet membranes,” explains Sterlitech President Mark Spatz. ...
(Date:8/28/2014)... Earlier this month, a report was created by ... Air Force on the performance of vehicles using an ... of fuel made from mustard seeds, offered great potential ... Eco friendly future. In fact, every branch of the ... of foreign oil over the next few years. They ...
Breaking Biology Technology:Glenn Boreman, UNC Professor and Plasmonics Co-Founder, Elected to SPIE Presidential Chain 2A new, tunable device for spintronics 2A new, tunable device for spintronics 3Sterlitech Corporation Enhances Its Selection of Flat Sheet Membrane Filters 2Can Small Farmers and a New Seed Based Biofuel “Green” the World? Major Universities and Even the U.S. Air Force Seem to Think So 2Can Small Farmers and a New Seed Based Biofuel “Green” the World? Major Universities and Even the U.S. Air Force Seem to Think So 3Can Small Farmers and a New Seed Based Biofuel “Green” the World? Major Universities and Even the U.S. Air Force Seem to Think So 4Can Small Farmers and a New Seed Based Biofuel “Green” the World? Major Universities and Even the U.S. Air Force Seem to Think So 5
... MSC Care Management, the industry,s leading provider of ... workers, compensation claimants nationwide, announced today that it ... also focused on the workers, compensation industry, to ... management solution, known as S3. Integrated Healthcare Services, ...
... BETHESDA, Md., Oct. 4, 2011 Northwest Biotherapeutics ... will be presenting at the second annual Cancer ... 6, at the New York Academy of Medicine ... key opinion leaders, industry executives, and other stakeholders ...
... Oct. 4, 2011 Kylin Therapeutics, Inc., a ... has received a notice of allowance from United ... second U.S. patent application. This newly allowed patent ... as expanded areas on Kylin,s proprietary nanoparticle technology ...
Cached Biology Technology:MSC to Offer Surgical Implant Cost Management Solution through Acquisition of Integrated Healthcare Services 2NORTHWEST BIO Will Present at the Second Annual "Cancer Immunotherapy: A Long Awaited Reality Conference" at the New York Academy of Medicine, October 6, 2011 2NORTHWEST BIO Will Present at the Second Annual "Cancer Immunotherapy: A Long Awaited Reality Conference" at the New York Academy of Medicine, October 6, 2011 3NORTHWEST BIO Will Present at the Second Annual "Cancer Immunotherapy: A Long Awaited Reality Conference" at the New York Academy of Medicine, October 6, 2011 4Kylin Therapeutics Receives Notice of Allowance for Second U.S. Patent Covering Delivery of Therapeutic RNA and pRNAi Technology 2