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
Invasive Insects Cost the World Billions Per Year
04.10.2016 | University of Adelaide
Malaysia's unique freshwater mussels in danger
27.09.2016 | The University of Nottingham Malaysia Campus
Ultrafast lasers have introduced new possibilities in engraving ultrafine structures, and scientists are now also investigating how to use them to etch microstructures into thin glass. There are possible applications in analytics (lab on a chip) and especially in electronics and the consumer sector, where great interest has been shown.
This new method was born of a surprising phenomenon: irradiating glass in a particular way with an ultrafast laser has the effect of making the glass up to a...
Terahertz excitation of selected crystal vibrations leads to an effective magnetic field that drives coherent spin motion
Controlling functional properties by light is one of the grand goals in modern condensed matter physics and materials science. A new study now demonstrates how...
Researchers from the Institute for Quantum Computing (IQC) at the University of Waterloo led the development of a new extensible wiring technique capable of controlling superconducting quantum bits, representing a significant step towards to the realization of a scalable quantum computer.
"The quantum socket is a wiring method that uses three-dimensional wires based on spring-loaded pins to address individual qubits," said Jeremy Béjanin, a PhD...
In a paper in Scientific Reports, a research team at Worcester Polytechnic Institute describes a novel light-activated phenomenon that could become the basis for applications as diverse as microscopic robotic grippers and more efficient solar cells.
A research team at Worcester Polytechnic Institute (WPI) has developed a revolutionary, light-activated semiconductor nanocomposite material that can be used...
By forcefully embedding two silicon atoms in a diamond matrix, Sandia researchers have demonstrated for the first time on a single chip all the components needed to create a quantum bridge to link quantum computers together.
"People have already built small quantum computers," says Sandia researcher Ryan Camacho. "Maybe the first useful one won't be a single giant quantum computer...
14.10.2016 | Event News
14.10.2016 | Event News
12.10.2016 | Event News
27.10.2016 | Materials Sciences
27.10.2016 | Physics and Astronomy
27.10.2016 | Life Sciences