Navigation Links
Stop marine pollution to protect kelp forests
Date:7/17/2013

University of Adelaide marine biologists have found that reducing nutrient pollution in coastal marine environments should help protect kelp forests from the damaging effects of rising CO2.

The researchers have found a combined effect on kelp forests from nutrient pollution and higher CO2, which could have a devastating impact on Australia's marine ecosystems.

"When we manipulated CO2 and nutrient levels in an experimental marine ecosystem we found the effect of both of them together was greater than the sum of their individual impacts," says Dr Bayden Russell, of the University's Environment Institute and Senior Lecturer in the School of Earth and Environmental Sciences.

The project, by PhD student Laura Falkenberg, found that removing the nutrients from the water removed the combined effect, improving the environment for kelp growth.

Kelp forests are one of the most productive marine ecosystems in colder waters and form the basis of food webs for many fish and other marine life. "They are the coral reefs of colder waters," Dr Russell says.

"Increased nutrients from agriculture, wastewater discharge and stormwater on urban coasts are already causing damage to kelp populations in our coastal waters but our research shows that, as CO2 rises the impacts will be much worse and we could lose these really important marine habitats," says Dr Russell.

The researchers grew kelp in experimental tanks floating in the North Haven Boat Harbour with different combinations of added nutrients and CO2. They measured the growth of turf algae which is a precursor to kelp forest loss. As the turf algae grows it displaces the kelp.

"When we removed the nutrients but kept the CO2 high we found that after six months we'd reduced the turf algae by 75% - we'd removed that synergistic effect," says Dr Russell.

"As we face a future of climate change and higher CO2 levels, there is considerable evidence that our marine ecosystems are going to be severely impacted. We won't be able to manage those global factors at the local level, but what we can manage is local nutrient pollution into our seas from urban areas," he says.

"This work has shown that by reducing the nutrients we should be able to substantially reduce the impact of rising CO2. The bottom line is that we need to reduce the nutrient pollution now."

The research is continuing with larger tanks, known as mesocosms, set up at West Beach and in natural marine areas where CO2 seeps into the water from seabed volcanic activity in New Zealand.


'/>"/>

Contact: Dr. Bayden Russell
bayden.russell@adelaide.edu.au
61-404-845-919
University of Adelaide
Source:Eurekalert

Related biology news :

1. Increase in Arctic shipping poses risk to marine mammals
2. Marine Protected Areas are keeping turtles safe
3. Size matters: Large Marine Protected Areas work for dolphins
4. New iPad, iPhone app helps mariners avoid endangered right whales
5. First mass extinction linked to marine anoxia
6. Marine scientists urge government to reassess oil spill response
7. NOAA discovers way to detect low-level exposure to seafood toxin in marine animals
8. SeaSketch, the next generation of UCSBs MarineMap program, will aid marine spatial planning
9. ORNL protein analysis investigates marine worm community
10. Deep sea animals stowaway on submarines and reach new territory
11. DNA evidence shows that marine reserves help to sustain fisheries
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/2/2016)... 2016 The Department of Transport Management ... 44 million US Dollar project, for the , ... Personalization, Enrolment, and IT Infrastructure , to ... and implementation of Identity Management Solutions. Numerous renowned international vendors ... Decatur was selected for the most compliant and ...
(Date:5/24/2016)... care by providing unparalleled technology to leaders of the medical imaging industry.  As such, ... to the range of products distributed by Ampronix. Photo - http://photos.prnewswire.com/prnh/20160524/371420 ... ... ... With ...
(Date:5/9/2016)... 9, 2016 Elevay is currently ... expanding freedom for high net worth professionals seeking travel ... globally connected world, there is still no substitute for ... duplicate sealing your deal with a firm handshake. This ... taking advantage of citizenship via investment programs like those ...
Breaking Biology News(10 mins):
(Date:6/27/2016)... ... June 27, 2016 , ... ... findings on what they believe could be a new and helpful biomarker for ... research. Click here to read it now. , Biomarkers are components ...
(Date:6/27/2016)... 27, 2016  Liquid Biotech USA ... of a Sponsored Research Agreement with The University ... (CTCs) from cancer patients.  The funding will be ... correlate with clinical outcomes in cancer patients undergoing ... then be employed to support the design of ...
(Date:6/24/2016)... ... ... While the majority of commercial spectrophotometers and fluorometers use the z-dimension of 8.5 ... end machines that use the more unconventional z-dimension of 20mm. Z-dimension or ... the cuvette holder. , FireflySci has developed several Agilent flow cell product lines ...
(Date:6/23/2016)... , June 23, 2016   Boston Biomedical ... novel compounds designed to target cancer stemness pathways, ... been granted Orphan Drug Designation from the U.S. ... of gastric cancer, including gastroesophageal junction (GEJ) cancer. ... designed to inhibit cancer stemness pathways by targeting ...
Breaking Biology Technology: