Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

British butterfly reveals role of habitat for species responding to climate change

26.02.2009
Most wild species are expected to colonise northwards as the climate warms, but how are they going to get there when so many landscapes are covered in wheat fields and other crops?

A study published today (Wednesday 25 February 2009) shows it is possible to predict how fast a population will spread and reveals the importance of habitat conservation in helping threatened species survive environmental change

Published in the journal Proceedings of the Royal Society B, the research tracks the recovery of a rare British butterfly over 18 years and offers hope for the preservation of other species.

Conducted by the Universities of Exeter, York and Sheffield and funded by the Natural Environment Research Council, the study could inform future conservation policy to help safeguard vulnerable species against the effects of climate change and habitat destruction.

The silver-spotted skipper is a rare butterfly confined to chalk grasslands in southern England. 80% of such habitats were destroyed in the twentieth century as a result of changes to farming. By 1982 there were fewer than 70 populations of the species, almost all in five networks of chalk hills, and covering an area of only two square kilometres (less than a square mile).

Between 1982 and 2000 a number of conservation measures helped rescue the species from extinction, including reintroducing grazing livestock. The species has also benefited from warmer temperatures resulting from climate change. By 2000, the butterfly had expanded its distribution by colonizing suitable areas of habitat, and occupied an area measuring 21km2, ten times larger than in 1982. However, it only expanded up to 30 km from its existing colonies, and in most regions the range expansions were much shorter.

The research team applied a mathematical model to the geographical spread of the butterfly. They concluded that the recovery of the species depended on the quality and proximity of suitable chalk grassland. In other words, the 'fragmentation' of suitable habitat by human activity held up the rate at which the butterfly could spread through the landscape. The upside was that the researchers could accurately predict how far the species expanded in different landscapes. This suggests that a similar model could be used to predict the conservation activities which most benefit the recovery of this and other rare species.

Lead author Dr Rob Wilson of the University of Exeter said: "Natural habitats are becoming increasingly fragmented, and many species are now confined to tiny suitable areas. To safeguard these species for the future we need to know where to manage habitat – not just to save the few remaining populations, but to bring about genuine recovery. The results of our study show that it may be possible to develop conservation programmes which will increase recovery rates for such species."

Dr Zoe Davies, a collaborator on the paper from the University of Sheffield, said: "Climate change has allowed the silver-spotted skipper to use a wider range of habitats now than in the past. But, even so, the butterfly has barely been able to expand its distribution through a landscape which has been heavily modified by human activity."

Co-author Professor Chris Thomas, of the University of York, added: "Many species will need to move their distributions to survive climate change. Such species may only be able to expand their distributions in landscapes where there is sufficient habitat to do so. We need to take action now to identify and conserve these key landscapes."

Sarah Hoyle | EurekAlert!
Further information:
http://www.exeter.ac.uk

More articles from Life Sciences:

nachricht Cancer diagnosis: no more needles?
25.05.2018 | Christian-Albrechts-Universität zu Kiel

nachricht Less is more? Gene switch for healthy aging found
25.05.2018 | Leibniz-Institut für Alternsforschung - Fritz-Lipmann-Institut e.V. (FLI)

All articles from Life Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Powerful IT security for the car of the future – research alliance develops new approaches

The more electronics steer, accelerate and brake cars, the more important it is to protect them against cyber-attacks. That is why 15 partners from industry and academia will work together over the next three years on new approaches to IT security in self-driving cars. The joint project goes by the name Security For Connected, Autonomous Cars (SecForCARs) and has funding of €7.2 million from the German Federal Ministry of Education and Research. Infineon is leading the project.

Vehicles already offer diverse communication interfaces and more and more automated functions, such as distance and lane-keeping assist systems. At the same...

Im Focus: Molecular switch will facilitate the development of pioneering electro-optical devices

A research team led by physicists at the Technical University of Munich (TUM) has developed molecular nanoswitches that can be toggled between two structurally different states using an applied voltage. They can serve as the basis for a pioneering class of devices that could replace silicon-based components with organic molecules.

The development of new electronic technologies drives the incessant reduction of functional component sizes. In the context of an international collaborative...

Im Focus: LZH showcases laser material processing of tomorrow at the LASYS 2018

At the LASYS 2018, from June 5th to 7th, the Laser Zentrum Hannover e.V. (LZH) will be showcasing processes for the laser material processing of tomorrow in hall 4 at stand 4E75. With blown bomb shells the LZH will present first results of a research project on civil security.

At this year's LASYS, the LZH will exhibit light-based processes such as cutting, welding, ablation and structuring as well as additive manufacturing for...

Im Focus: Self-illuminating pixels for a new display generation

There are videos on the internet that can make one marvel at technology. For example, a smartphone is casually bent around the arm or a thin-film display is rolled in all directions and with almost every diameter. From the user's point of view, this looks fantastic. From a professional point of view, however, the question arises: Is that already possible?

At Display Week 2018, scientists from the Fraunhofer Institute for Applied Polymer Research IAP will be demonstrating today’s technological possibilities and...

Im Focus: Explanation for puzzling quantum oscillations has been found

So-called quantum many-body scars allow quantum systems to stay out of equilibrium much longer, explaining experiment | Study published in Nature Physics

Recently, researchers from Harvard and MIT succeeded in trapping a record 53 atoms and individually controlling their quantum state, realizing what is called a...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

In focus: Climate adapted plants

25.05.2018 | Event News

Save the date: Forum European Neuroscience – 07-11 July 2018 in Berlin, Germany

02.05.2018 | Event News

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

13.04.2018 | Event News

 
Latest News

In focus: Climate adapted plants

25.05.2018 | Event News

Flow probes from the 3D printer

25.05.2018 | Machine Engineering

Less is more? Gene switch for healthy aging found

25.05.2018 | Life Sciences

VideoLinks
Science & Research
Overview of more VideoLinks >>>