Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Digitizing the coral reef: You can only protect what you know

27.01.2016

MPI Researchers develop a new method to map the state of coral reefs quickly and comprehensively. Climate change affects many parts of the world, bringing with it ocean acidification. Coral reefs are particularly vulnerable to the increasing acidification of the oceans. Now scientists from Bremen, Germany developed a new method to measure the status of coral reefs, in a more complete way than before.

Coral reefs are complex ecosystems with high biodiversity


With the HyperDiver system a diver can scan up to 40 square meters of the reef every minute. The spatial resolution is in the centimetre range.

Max Planck Institute for Marine Microbiology


The result of the analysis: the classified reef.

Dr. Arjun Chennu, Max Planck Institute for Marine Microbiology

Due to the complexity and biodiversity of coral reefs, surveying them is generally a complicated and expensive process and only a fraction of the reef could be covered. Now the physicist Arjun Chennu and Marine Biologist Joost den Haan from the Max Planck Institute in Bremen, Germany present a novel approach, by which they create detailed maps of the underwater reef landscape.

Using novel camera technology and an intelligent computer algorithm, they demonstrate how a diver can survey the reef, analyze it and create a map of a large area of the reef in a comparatively short time.

Comprehensive reef mapping

The researchers from the Max Planck Institute in Bremen have now successfully tested the new HyperDiver system in Papua New Guinea. The test site was a coral reef near to natural seeps of carbon dioxide. In the vicinity of these seeps, the coral reefs show signs of stress and damage: a natural ecosystem laboratory for the HyperDiver system to study the effect of ocean acidification on coral reefs.

"The novel development is the collection of underwater spectral images and the analysis by a computer program with a self-learning algorithm," explains Chennu. "We train the program to identify the reef organisms. This is similar to automated face recognition from video surveillance."

His colleague Joost den Haan adds: "This technique allows us to create a visual map of the biodiversity of coral reefs. The more coral reefs we map, the better the system can distinguish the variety of coral species. Now it is possible to accurately detect the present condition of the reefs and to monitor any changes." The researchers are very satisfied with their first results.

With the success of the pilot study, Chennu and den Haan hope that their system will soon be used worldwide towards the monitoring and protection of coral reefs. Here they present the HyperDiver technique in a short video (Youtube link https://youtu.be/v56hAf8SjYY)

For more information contact

Dr. Arjun Chennu
Phone: +49 421 2028 – 832, achennu(at)mpi-bremen.de
Dr. Joost den Haan
Phone: +49 421 2028 – 832, jhaan(at)mpi-bremen.de
Max Planck Institute for Marine Microbiology
www.mpi-bremen.de

Press contact
Dr. Manfred Schlösser
Phone: +49 421 2028 – 704, mschloes(at)mpi-bremen.de

Dr. Fanni Aspetsberger
Phone: +49 421 2028 – 645, faspetsb(at)mpi-bremen.de

Weitere Informationen:

https://youtu.be/v56hAf8SjYY youtube video
http://www.mpi-bremen.de Website of the Max Planck Institute for Marine Microbiology

Dr. Manfred Schloesser | Max-Planck-Institut für marine Mikrobiologie

All articles from Earth Sciences >>>

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

Nagoya physicists resolve long-standing mystery of structure-less transition

21.08.2017 | Materials Sciences

Chronic stress induces fatal organ dysfunctions via a new neural circuit

21.08.2017 | Health and Medicine

Scientists from the MSU studied new liquid-crystalline photochrom

21.08.2017 | Materials Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>