Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Coral reef collapse spells danger for millions

04.04.2007
Island communities that depend on coral reef fisheries could face a hungry future, according to new research from the University of East Anglia, the Centre for Environment, Fisheries & Aquaculture Science (Cefas), and Simon Fraser University in Canada, published in Current Biology.

The report on island coral reef fisheries reveals that over half (55%) of the 49 island countries reviewed were being exploited unsustainably. Fish landings are currently 64% higher than can be sustained. In order to support this level of exploitation, an additional 75,000 km2 of coral reef would be needed – an area 3.7 times greater than Australia’s Great Barrier Reef. These figures will nearly triple by 2050, given current human population growth projections.

Katie Newton, of the University of East Anglia’s School of Biological Sciences, undertook a survey of the landing catches of 49 island nations across the Pacific, Indian and Atlantic Oceans.

“Millions of people are dependent on coral reef fisheries. We are facing a global crisis among communities which have limited alternative livelihoods or major food sources,” she said.

“Coral reef ecologists have tended to focus on specific issues rather than the big picture of the resilience of these fisheries when faced with extensive over-exploitation. Scientists need to work hand in hand with development agencies to address this pressing situation.”

Team leader for the study, Dr Nick Dulvy, of Cefas, says: “Unchecked levels of over-exploitation can only lead to long-term social and economic hardship. Management methods to reduce dependence on reef fisheries are essential to prevent the collapse of these valuable ecosystems.

“Apart from over-fishing, sustainability could also be influenced by global warming impacts: the potential abandonment of atolls due to rising sea levels and the loss of reef productivity when temperature-induced bleaching kills coral. So it is likely that alternative livelihoods will be essential for many of those currently dependent on coral reef fisheries.”

The authors calculated the ecological footprint of the islands, where 1 equals resource consumption balancing sustainable reef production. One-third of the countries had unsustainable footprints (>1), and nearly half of the island nations were categorised as over-exploited or collapsed.

Katie Newton | alfa
Further information:
http://comm.uea.ac.uk/press/press.asp

More articles from Ecology, The Environment and Conservation:

nachricht Dispersal of Fish Eggs by Water Birds – Just a Myth?
19.02.2018 | Universität Basel

nachricht Removing fossil fuel subsidies will not reduce CO2 emissions as much as hoped
08.02.2018 | International Institute for Applied Systems Analysis (IIASA)

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: BAM@Hannover Messe: innovative 3D printing method for space flight

At the Hannover Messe 2018, the Bundesanstalt für Materialforschung und-prüfung (BAM) will show how, in the future, astronauts could produce their own tools or spare parts in zero gravity using 3D printing. This will reduce, weight and transport costs for space missions. Visitors can experience the innovative additive manufacturing process live at the fair.

Powder-based additive manufacturing in zero gravity is the name of the project in which a component is produced by applying metallic powder layers and then...

Im Focus: Molecules Brilliantly Illuminated

Physicists at the Laboratory for Attosecond Physics, which is jointly run by Ludwig-Maximilians-Universität and the Max Planck Institute of Quantum Optics, have developed a high-power laser system that generates ultrashort pulses of light covering a large share of the mid-infrared spectrum. The researchers envisage a wide range of applications for the technology – in the early diagnosis of cancer, for instance.

Molecules are the building blocks of life. Like all other organisms, we are made of them. They control our biorhythm, and they can also reflect our state of...

Im Focus: Spider silk key to new bone-fixing composite

University of Connecticut researchers have created a biodegradable composite made of silk fibers that can be used to repair broken load-bearing bones without the complications sometimes presented by other materials.

Repairing major load-bearing bones such as those in the leg can be a long and uncomfortable process.

Im Focus: Writing and deleting magnets with lasers

Study published in the journal ACS Applied Materials & Interfaces is the outcome of an international effort that included teams from Dresden and Berlin in Germany, and the US.

Scientists at the Helmholtz-Zentrum Dresden-Rossendorf (HZDR) together with colleagues from the Helmholtz-Zentrum Berlin (HZB) and the University of Virginia...

Im Focus: Gamma-ray flashes from plasma filaments

Novel highly efficient and brilliant gamma-ray source: Based on model calculations, physicists of the Max PIanck Institute for Nuclear Physics in Heidelberg propose a novel method for an efficient high-brilliance gamma-ray source. A giant collimated gamma-ray pulse is generated from the interaction of a dense ultra-relativistic electron beam with a thin solid conductor. Energetic gamma-rays are copiously produced as the electron beam splits into filaments while propagating across the conductor. The resulting gamma-ray energy and flux enable novel experiments in nuclear and fundamental physics.

The typical wavelength of light interacting with an object of the microcosm scales with the size of this object. For atoms, this ranges from visible light to...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

Invitation to the upcoming "Current Topics in Bioinformatics: Big Data in Genomics and Medicine"

13.04.2018 | Event News

Unique scope of UV LED technologies and applications presented in Berlin: ICULTA-2018

12.04.2018 | Event News

IWOLIA: A conference bringing together German Industrie 4.0 and French Industrie du Futur

09.04.2018 | Event News

 
Latest News

Quantum Technology for Advanced Imaging – QUILT

24.04.2018 | Information Technology

AWI researchers measure a record concentration of microplastic in arctic sea ice

24.04.2018 | Earth Sciences

Complete skin regeneration system of fish unraveled

24.04.2018 | Life Sciences

VideoLinks
Science & Research
Overview of more VideoLinks >>>