Powerboat-World.com
 
 
News Home Video Gallery Newsletters Features FishingBoating Photo Gallery Sail-World Australia Australian Cruising
Sail-World Australia Australian Cruising MarineBusiness-World

 

Sail-World.com : Airborne pollutants can be toxic to marine algae

Airborne pollutants can be toxic to marine algae

'Phytoplankton bloom of Denmark. Photo: Jeff Schmaltz, MODIS Rapid Response Team, NASA/GSFC'    NASA - Visible Earth    Click Here to view large photo

A newly published paper by ocean scientists shows that airborne particles off the continents can have deadly effect on some marine phytoplankton. The findings, published in the online early edition of the Proceedings of the National Academy of Sciences (PNAS) the week of March 9, 2009, have implications for atmospheric carbon dioxide levels and climate.

Many experiments have been conducted, particularly with iron, to show how aerosol deposits in the ocean are an important source of nutrients and trace metals that can enhance phytoplankton growth. But, says lead author Adina Paytan from the University of California, Santa Cruz, 'this is the first time that toxicity from atmospheric aerosols has been reported for the ocean system.'

Plankton are a critical component of Earth’s climate system: as part of their life cycle, they draw carbon dioxide out of the air and transfer it into the deep sea.

Working with researchers from Woods Hole Oceanographic Institution (WHOI), Cornell University, the US Geological Survey and Interuniversity Institute of Marine Sciences in Israel, Paytan suggests that high concentrations of copper could be responsible for the toxic effects the team noted during a study of how phytoplankton respond to atmospheric aerosols deposited in the northern Red Sea.

Most of the copper deposits in the ocean come from natural sources of dust, manmade sources accounted for roughly 40 percent. Using data from various sources on copper concentrations in aerosols, global distributions of aerosols, and aerosol deposition rates, the researchers developed models that suggest certain areas--such as the Bay of Bengal and downwind of South and East Asia--are particularly at risk for the effects of copper deposition on ocean ecosystems.

Phytoplankton cultures (synecoccocus) grown in the lab showed toxicity responses to aerosol-derived copper in bioassay experiments. (K. R. M. Mackey) -  Woods Hole Oceanographic?nid=54968 Institution (WHOI) ©  
The researchers say there may be other pollutants in atmospheric aerosols that could also have toxic effects on marine phytoplankton. 'We need to do more extensive sampling of aerosols over larger areas and over greater lengths of time,' said Scott Doney, a geochemist and ocean modeler at WHOI who assisted Paytan with the numerical analysis of the satellite and field data. 'We also need to start thinking about varying responses from different biological species in the planktonic community.'

This research was supported in part by grants from NASA, NATO, and the National Science Foundation.

The Woods Hole Oceanographic Institution is a private, independent organization in Falmouth, Mass., dedicated to marine research, engineering, and higher education. Established in 1930 on a recommendation from the National Academy of Sciences, its primary mission is to understand the oceans and their interaction with the Earth as a whole, and to communicate a basic understanding of the oceans’ role in the changing global environment.

To see the UCSC press release, click here

http://www.whoi.edu




by Woods Hole Oceanographic Institution (WHOI)

  

Click on the FB Like link to post this story to your FB wall

http://www.powerboat-world.com/index.cfm?nid=54968

2:30 AM Thu 19 Mar 2009 GMT






Click here for printer friendly version
Click here to send us feedback or comments about this story.

Click for further information on
Environment and the ocean

Related News Stories:

27 Nov 2013  World Oceans Day appeals for funds
16 Nov 2013  Gigantic iceberg sails north from the Antarctic
09 Nov 2013  Sailing and swimming with manatees - Oceans Watch Essay
01 Nov 2013  OceansWatch: cruising sailors give something back in the South Pacific
23 Oct 2013  'The Ocean is Broken' - without fish, there can be no birds
13 Oct 2013  PlanetSolar reaches Paris after successful ocean study
02 Oct 2013  Monaco Yacht Show goes Green
07 Sep 2013  Great Pacific Garbage Patch - the real story
03 Sep 2013  World's largest solar yacht drops anchor after marine science quest
25 Aug 2013  Boat owners: cover vessels to deter seagulls
MORE STORIES ...

Power Boat News



Dangerous conditions forecast for NSW boaters by Roads and Maritime Services,










Abbot Point onshore disposal by Great Barrier Reef Marine Park Authority,










Great Barrier Reef plan released for comment by Queensland Minister for Environment,










Brisbane Boat Show begins *Feature by Jeni Bone,


































Mediterranean Grand Prix 2014 - Wins for Victory and Chaudron
Mediterranean Grand Prix, UIM-ABP Tour: Pons claims Runabout GP1 win
Mediterranean Grand Prix - Al Zaffain and Bin Hendi win race 1
Court judgement a stark reminder about towing safety
Australian Offshore Superboat 2014 - Superboats ready for Redcliffe
Southport Yacht Club’s annual Sail Past and Blessing of Fleet Ceremony
Gosport Grand Prix of the Sea finale to decide P1 champions
Camper & Nicholsons Yachts presents the Sagitta 42
GT15 and GT30 European Championships - Jelf takes to the podium twice
Marine Rescue crew saves cruiser in trouble in rough conditions
XCAT Series gets set to conquer another continent in 2015
Dangerous conditions for boaters on most of NSW coast
2014 Mandurah Boat Show - Third largest boat show in Australia
2014 Gold Coast International Marine Expo - Eye on the big picture
Mediterranean Grand Prix - Powerboat racing heavyweights head to Ibiza
Mediterranean Grand Prix - World Aquabike stars all set
Antarctic sea-level rising faster than global rate
Powerboat champions gear up for Honda RYA Youth RIB National final
Andrew Scott joins Superior as General Manager *Feature
2014 Gold Coast International Marine Expo - Fastest Jet Ski ever built
Best Birthday Party ever at Southport Yacht Club! *Feature   
‘Hall of Fame’ status for Empire Marina *Feature   
Girl power all set for Nottingham powerboat racing action   
Cowes to Torquay Race 2014 - Intense activity in preparation   
Fort Lauderdale International Boat Show - 13 things to See and do   
Australian Offshore Superboat Champ - 15 Superboats in Coffs Harbour   
European première for Belize 54 Daybridge at Cannes Yachting Festival   
‘Fish Friendly’ accreditation for Sanctuary Cove Marina   
Plethora of Powerboat racing action this weekend   
Vicsail Boat show Open Day at Rushcutters Bay   
Marine15 - prospectus available online now + VIDEO *Feature   
Southport Yacht Club achieves Clean Marina certification + VIDEO *Feature   
Port Kembla Volunteers bring in 75 metre monster from 5nm offshore   
Gold Coast Int'l Marine Expo - Make every moment one to remember   
Dangerous conditions for boaters from Queensland border to Sydney   
4x4 Outdoors Show and Fishing and Boating Expo - Busy opening day   
Summerland 40 LR named Boat of the Year   
More new boats brand Brisbane Boat Show as a spectacular showcase   
Xiamen Int'l Boat Show 2014 moving to a new home   
Yamaha inspires students to succeed   


For this week's complete news stories select    Last 7 Days
   Search All News
For last month's complete news stories select    Last 30 Days
   Archive News







Sail-World.com  


















Switch Default Region to:

Social Media

Asia

Australia

Canada

Europe

New Zealand

United Kingdom


http://www.sail-world.com/event_images/image/Twitter_logo_small.png   http://www.sail-world.com/event_images/image/RSS-Icon.png

United States

Cruising Northern

Cruising Southern

MarineBusiness World

PowerBoat World

FishingBoating World

 

Contact

Commercial

News

Search

Contact Us

Advertisers Information

Submit news/events

Search Stories/Text

Feedback

Advertisers Directory

Newsletter Archive

Photo Gallery

 

Banner Advertising Details

Newsletter Subscribe

Video Gallery

Policies

 

 

 

Privacy Policy

 

 


Cookie Policy

 

 



This site and its contents are © Copyright TetraMedia and/or the original author, photographer etc. All Rights Reserved.  Photographs are copyright by law.  If you wish to use or buy a photograph contact the photographer directly.
XLXL NEW PBW
LocalAds   DE  ES  FR  IT