Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Controlling blooming algae

21.04.2008
When a red tide kisses the shore, you know it's time to get out of the water. Toxic algal blooms have always afflicted lakes and seas, but they have become increasingly common because of pollution and changing environmental conditions. Now, research to be published in the International Journal of Environment and Health, offers insights into how such blooms could be controlled.

Milena Bruno and colleagues in the Department of Environment and Primary Prevention, at the Istituto Superiore di Sanità, in Rome, Italy, point out that bodies of water across the globe have undergone increasing eutrophication over the last four decades. Changing nutrient and pollution levels due to the release of human waste, agricultural run-off, fish farming, and changing global climatic conditions has led to an increase in algal blooms. Inadvertent transportation of dormant algal cysts in ship ballasts has also contributed to them becoming more widespread.

"Algal blooms, and harmful algal blooms in particular, have multiplied enormously throughout the world over the last 40 years," says Bruno, "in parallel with human population growth and industrialization." The researchers add that extreme cases are seen in North America, where incidence increased from 200 to 700 per year from the 1970s to the 1990s, in Japan, and in Europe.

The team has suggested a range of new control strategies, including a sterilization program for ensuring shipping ballast water does not act as a transportation system for algae. They also point to success in treating algal blooms using clay particles to kill the algal cells.

The researchers also suggest that remote sensing and satellite imaging technology could be used to monitor algal growth around aquaculture areas where corralled fish and shellfish are grown, particularly in the Far East. Seafood contaminated with algal toxins can lead to severe and potentially lethal outbreaks of food poisoning.

They add that these and other strategies should be operated alongside a medical information network that can track health problems, such as dermatitis in swimmers and food poisoning, related to algal blooms.

"Bearing in mind the problems caused by the presence of algal blooms and the difficulties involved in eliminating them, it is obvious that adequate measures of prevention and the proper management of the ecology along coasts and in the open sea are of prime importance," Bruno says.

Albert Ang | alfa
Further information:
http://www.inderscience.com

More articles from Ecology, The Environment and Conservation:

nachricht Value from wastewater
16.08.2017 | Hochschule Landshut

nachricht Species Richness – a false friend? Scientists want to improve biodiversity assessments
01.08.2017 | Carl von Ossietzky-Universität Oldenburg

All articles from Ecology, The Environment and Conservation >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Fizzy soda water could be key to clean manufacture of flat wonder material: Graphene

Whether you call it effervescent, fizzy, or sparkling, carbonated water is making a comeback as a beverage. Aside from quenching thirst, researchers at the University of Illinois at Urbana-Champaign have discovered a new use for these "bubbly" concoctions that will have major impact on the manufacturer of the world's thinnest, flattest, and one most useful materials -- graphene.

As graphene's popularity grows as an advanced "wonder" material, the speed and quality at which it can be manufactured will be paramount. With that in mind,...

Im Focus: Exotic quantum states made from light: Physicists create optical “wells” for a super-photon

Physicists at the University of Bonn have managed to create optical hollows and more complex patterns into which the light of a Bose-Einstein condensate flows. The creation of such highly low-loss structures for light is a prerequisite for complex light circuits, such as for quantum information processing for a new generation of computers. The researchers are now presenting their results in the journal Nature Photonics.

Light particles (photons) occur as tiny, indivisible portions. Many thousands of these light portions can be merged to form a single super-photon if they are...

Im Focus: Circular RNA linked to brain function

For the first time, scientists have shown that circular RNA is linked to brain function. When a RNA molecule called Cdr1as was deleted from the genome of mice, the animals had problems filtering out unnecessary information – like patients suffering from neuropsychiatric disorders.

While hundreds of circular RNAs (circRNAs) are abundant in mammalian brains, one big question has remained unanswered: What are they actually good for? In the...

Im Focus: RAVAN CubeSat measures Earth's outgoing energy

An experimental small satellite has successfully collected and delivered data on a key measurement for predicting changes in Earth's climate.

The Radiometer Assessment using Vertically Aligned Nanotubes (RAVAN) CubeSat was launched into low-Earth orbit on Nov. 11, 2016, in order to test new...

Im Focus: Scientists shine new light on the “other high temperature superconductor”

A study led by scientists of the Max Planck Institute for the Structure and Dynamics of Matter (MPSD) at the Center for Free-Electron Laser Science in Hamburg presents evidence of the coexistence of superconductivity and “charge-density-waves” in compounds of the poorly-studied family of bismuthates. This observation opens up new perspectives for a deeper understanding of the phenomenon of high-temperature superconductivity, a topic which is at the core of condensed matter research since more than 30 years. The paper by Nicoletti et al has been published in the PNAS.

Since the beginning of the 20th century, superconductivity had been observed in some metals at temperatures only a few degrees above the absolute zero (minus...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Call for Papers – ICNFT 2018, 5th International Conference on New Forming Technology

16.08.2017 | Event News

Sustainability is the business model of tomorrow

04.08.2017 | Event News

Clash of Realities 2017: Registration now open. International Conference at TH Köln

26.07.2017 | Event News

 
Latest News

Gold shines through properties of nano biosensors

17.08.2017 | Physics and Astronomy

Greenland ice flow likely to speed up: New data assert glaciers move over sediment, which gets more slippery as it gets wetter

17.08.2017 | Earth Sciences

Mars 2020 mission to use smart methods to seek signs of past life

17.08.2017 | Physics and Astronomy

VideoLinks
B2B-VideoLinks
More VideoLinks >>>