Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Kittiwake-up call on sandeel fisheries and climate change

07.12.2004


Populations of the black-legged kittiwake will not recover unless the commercial sandeel fishery off the east coast of Scotland and north-east England remains closed indefinitely, ecologists have said. The stark warning comes from a paper published today in the British Ecological Society’s Journal of Applied Ecology. It is the first study to examine the combined effects of oceanography and fisheries on a North Sea seabird.

Kittiwake numbers in the North Sea have declined by more than 50% since 1990. According to Dr Morten Frederiksen and colleagues from the Centre for Ecology and Hydrology, the decline is due to both commercial sandeel fishing and climate change, which has resulted in warmer winters in recent years. “Reversing the trend towards warmer winters may be impossible and, at best, would be a very slow process. Therefore, to safeguard kittiwake populations we recommend that the current closure of the commercial sandeel fishery remain in place indefinitely,” Frederiksen says.

Kittiwakes in the North Sea feed almost exclusively on lesser sandeels, and sandeel numbers are reduced not only by commercial fishing, where they are used in fishmeal, but also by climate change because rising winter sea temperatures adversely affect the recruitment of young sandeels to the stock.



Using data on kittiwake numbers, breeding success and survival of adults, from 1986 to 2002, Frederiksen modelled the impact of changes in the sandeel fishery and in sea temperature on the kittiwake’s population. “Modelling indicated that the kittiwake population was unlikely to increase if the fishery was active or sea temperature increased, and that the population was almost certain to decrease if both occurred,” he says.

The European Union Fisheries Council banned sandeel fishing in the North Sea in 2000. The EU Fisheries Council is expected to confirm continued closure of the sandeel fishery through 2005 when it meets this month. Sandeels are a key resource for other marine predators, including seals, cod and most other seabirds, as well as the kittiwake.

Becky Allen | alfa
Further information:
http://www.britishecologicalsociety.org
http://www.ntlworld.com

More articles from Ecology, The Environment and Conservation:

nachricht Preservation of floodplains is flood protection
27.09.2017 | Technische Universität München

nachricht Conservationists are sounding the alarm: parrots much more threatened than assumed
15.09.2017 | Justus-Liebig-Universität Gießen

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: Neutron star merger directly observed for the first time

University of Maryland researchers contribute to historic detection of gravitational waves and light created by event

On August 17, 2017, at 12:41:04 UTC, scientists made the first direct observation of a merger between two neutron stars--the dense, collapsed cores that remain...

Im Focus: Breaking: the first light from two neutron stars merging

Seven new papers describe the first-ever detection of light from a gravitational wave source. The event, caused by two neutron stars colliding and merging together, was dubbed GW170817 because it sent ripples through space-time that reached Earth on 2017 August 17. Around the world, hundreds of excited astronomers mobilized quickly and were able to observe the event using numerous telescopes, providing a wealth of new data.

Previous detections of gravitational waves have all involved the merger of two black holes, a feat that won the 2017 Nobel Prize in Physics earlier this month....

Im Focus: Smart sensors for efficient processes

Material defects in end products can quickly result in failures in many areas of industry, and have a massive impact on the safe use of their products. This is why, in the field of quality assurance, intelligent, nondestructive sensor systems play a key role. They allow testing components and parts in a rapid and cost-efficient manner without destroying the actual product or changing its surface. Experts from the Fraunhofer IZFP in Saarbrücken will be presenting two exhibits at the Blechexpo in Stuttgart from 7–10 November 2017 that allow fast, reliable, and automated characterization of materials and detection of defects (Hall 5, Booth 5306).

When quality testing uses time-consuming destructive test methods, it can result in enormous costs due to damaging or destroying the products. And given that...

Im Focus: Cold molecules on collision course

Using a new cooling technique MPQ scientists succeed at observing collisions in a dense beam of cold and slow dipolar molecules.

How do chemical reactions proceed at extremely low temperatures? The answer requires the investigation of molecular samples that are cold, dense, and slow at...

Im Focus: Shrinking the proton again!

Scientists from the Max Planck Institute of Quantum Optics, using high precision laser spectroscopy of atomic hydrogen, confirm the surprisingly small value of the proton radius determined from muonic hydrogen.

It was one of the breakthroughs of the year 2010: Laser spectroscopy of muonic hydrogen resulted in a value for the proton charge radius that was significantly...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

ASEAN Member States discuss the future role of renewable energy

17.10.2017 | Event News

World Health Summit 2017: International experts set the course for the future of Global Health

10.10.2017 | Event News

Climate Engineering Conference 2017 Opens in Berlin

10.10.2017 | Event News

 
Latest News

Osaka university researchers make the slipperiest surfaces adhesive

18.10.2017 | Materials Sciences

Space radiation won't stop NASA's human exploration

18.10.2017 | Physics and Astronomy

Los Alamos researchers and supercomputers help interpret the latest LIGO findings

18.10.2017 | Physics and Astronomy

VideoLinks
B2B-VideoLinks
More VideoLinks >>>