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 Successful calculation of human and natural influence on cloud formation
04.11.2016 | Goethe-Universität Frankfurt am Main

nachricht Invasive Insects Cost the World Billions Per Year
04.10.2016 | University of Adelaide

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: Novel silicon etching technique crafts 3-D gradient refractive index micro-optics

A multi-institutional research collaboration has created a novel approach for fabricating three-dimensional micro-optics through the shape-defined formation of porous silicon (PSi), with broad impacts in integrated optoelectronics, imaging, and photovoltaics.

Working with colleagues at Stanford and The Dow Chemical Company, researchers at the University of Illinois at Urbana-Champaign fabricated 3-D birefringent...

Im Focus: Quantum Particles Form Droplets

In experiments with magnetic atoms conducted at extremely low temperatures, scientists have demonstrated a unique phase of matter: The atoms form a new type of quantum liquid or quantum droplet state. These so called quantum droplets may preserve their form in absence of external confinement because of quantum effects. The joint team of experimental physicists from Innsbruck and theoretical physicists from Hannover report on their findings in the journal Physical Review X.

“Our Quantum droplets are in the gas phase but they still drop like a rock,” explains experimental physicist Francesca Ferlaino when talking about the...

Im Focus: MADMAX: Max Planck Institute for Physics takes up axion research

The Max Planck Institute for Physics (MPP) is opening up a new research field. A workshop from November 21 - 22, 2016 will mark the start of activities for an innovative axion experiment. Axions are still only purely hypothetical particles. Their detection could solve two fundamental problems in particle physics: What dark matter consists of and why it has not yet been possible to directly observe a CP violation for the strong interaction.

The “MADMAX” project is the MPP’s commitment to axion research. Axions are so far only a theoretical prediction and are difficult to detect: on the one hand,...

Im Focus: Molecules change shape when wet

Broadband rotational spectroscopy unravels structural reshaping of isolated molecules in the gas phase to accommodate water

In two recent publications in the Journal of Chemical Physics and in the Journal of Physical Chemistry Letters, researchers around Melanie Schnell from the Max...

Im Focus: Fraunhofer ISE Develops Highly Compact, High Frequency DC/DC Converter for Aviation

The efficiency of power electronic systems is not solely dependent on electrical efficiency but also on weight, for example, in mobile systems. When the weight of relevant components and devices in airplanes, for instance, is reduced, fuel savings can be achieved and correspondingly greenhouse gas emissions decreased. New materials and components based on gallium nitride (GaN) can help to reduce weight and increase the efficiency. With these new materials, power electronic switches can be operated at higher switching frequency, resulting in higher power density and lower material costs.

Researchers at the Fraunhofer Institute for Solar Energy Systems ISE together with partners have investigated how these materials can be used to make power...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

ICTM Conference 2017: Production technology for turbomachine manufacturing of the future

16.11.2016 | Event News

Innovation Day Laser Technology – Laser Additive Manufacturing

01.11.2016 | Event News

#IC2S2: When Social Science meets Computer Science - GESIS will host the IC2S2 conference 2017

14.10.2016 | Event News

 
Latest News

UTSA study describes new minimally invasive device to treat cancer and other illnesses

02.12.2016 | Medical Engineering

Plasma-zapping process could yield trans fat-free soybean oil product

02.12.2016 | Agricultural and Forestry Science

What do Netflix, Google and planetary systems have in common?

02.12.2016 | Physics and Astronomy

VideoLinks
B2B-VideoLinks
More VideoLinks >>>