Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Moderately Common Plants Show Highest Relative Losses

20.09.2019

Species that used to be abundant show the highest relative losses and have decreased on average to half their previous abundance levels. Researchers from the University of Rostock and the German Centre for Integrative Biodiversity Research (iDiv) have shown this decline using data from Mecklenburg-Vorpommern. The team led by Professor Florian Jansen has now published its findings in the journal Conservation Letters.

Two-thirds of the 355 plant species studied are less common today than they used to be. "The species showing the steepest decline are not the endangered species and those vulnerable to extinction, but those that used to occur in 25-50% of all 5 km by 5 km grid cells," said Professor Florian Jansen of the Faculty of Agriculture and Environmental Sciences at the University of Rostock.


The spreading bellflower (Campanula patula) is one of the species most affected by decline in abundance in Mecklenburg-Vorpommern. Formerly found in two-thirds of all grid cells, it is now very rare, although not directly threatened with extinction.

Copyright: University of Rostock / Florian Jansen

The research team led by Professor Jansen used the systematic survey of all vascular plants carried out by volunteer field surveyors between 1977 and 1988 and compared it with observations from the survey of endangered habitats commissioned by the M-V State Agency for the Environment, Nature Conservation and Geology 20 years later between 1996 and 2006.

Contrary to expectations, no correlation was found between the Red List category of the species and their decline in frequency. This could indicate that the protective measures taken for these species had at least some degree of success, according to Jansen.

"In many cases, however, the frequency of the former "common species" has declined to less than half," said the Rostock biologist. The researchers attribute this to changes in habitats caused by changes in land use. Species that only occur in a few habitat types have declined more than those with less specific site requirements.

The scientists blame the decline in biodiversity among other things on the massive use of artificial fertilizers in agriculture since the 1980s.
According to the team of researchers, the current conservation practice of protecting only rare plant species must be called into question.

"For the food chain, especially for insects that depend on the plants directly for nutrition, larval or overwintering habitat, the loss of moderately frequent species probably has a much greater impact than the loss of rare species," said Jansen.
Within the framework of the research project "sMon" further data sets are to be analyzed in order to evaluate changes and trends in biodiversity throughout Germany.

Caption: The spreading bellflower (Campanula patula) is one of the species most affected by decline in abundance in Mecklenburg-Vorpommern. Formerly found in two-thirds of all grid cells, it is now very rare, although not directly threatened with extinction

Wissenschaftliche Ansprechpartner:

Contact:
Prof. Dr. Florian Jansen
Faculty of Agriculture and Environmental Sciences
University of Rostock
Phone: +49 381 498-3220
Mobile: +49 176 34853793
E-mail: florian.jansen@uni-rostock.de

Originalpublikation:

Original Publication:
Jansen, F., Bonn, A., Bowler, D.E., Bruelheide, H., Eichenberg, D. (2019): Moderately common plants show highest relative losses. Conservation Letters. DOI: 10.1111/conl.12674
ISI Journal Citation Reports © Ranking: 2018: 2/58 (Biodiversity Conservation), Impact Factor: 7,4

Link to the research project: https://www.idiv.de/de/sdiv/arbeitsgruppen/wg_pool/smon.html

Weitere Informationen:

http://Web: https://www.auf.uni-rostock.de/professuren/h-w/landschaftsoekologie-und-standort...

Martina Kaminski | Universität Rostock

More articles from Life Sciences:

nachricht Human skin is an important source of ammonia emissions
27.05.2020 | Max-Planck-Institut für Chemie

nachricht Biotechnology: Triggered by light, a novel way to switch on an enzyme
27.05.2020 | Westfälische Wilhelms-Universität Münster

All articles from Life Sciences >>>

The most recent press releases about innovation >>>

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

Im Focus: Biotechnology: Triggered by light, a novel way to switch on an enzyme

In living cells, enzymes drive biochemical metabolic processes enabling reactions to take place efficiently. It is this very ability which allows them to be used as catalysts in biotechnology, for example to create chemical products such as pharmaceutics. Researchers now identified an enzyme that, when illuminated with blue light, becomes catalytically active and initiates a reaction that was previously unknown in enzymatics. The study was published in "Nature Communications".

Enzymes: they are the central drivers for biochemical metabolic processes in every living cell, enabling reactions to take place efficiently. It is this very...

Im Focus: New double-contrast technique picks up small tumors on MRI

Early detection of tumors is extremely important in treating cancer. A new technique developed by researchers at the University of California, Davis offers a significant advance in using magnetic resonance imaging to pick out even very small tumors from normal tissue. The work is published May 25 in the journal Nature Nanotechnology.

researchers at the University of California, Davis offers a significant advance in using magnetic resonance imaging to pick out even very small tumors from...

Im Focus: I-call - When microimplants communicate with each other / Innovation driver digitization - "Smart Health“

Microelectronics as a key technology enables numerous innovations in the field of intelligent medical technology. The Fraunhofer Institute for Biomedical Engineering IBMT coordinates the BMBF cooperative project "I-call" realizing the first electronic system for ultrasound-based, safe and interference-resistant data transmission between implants in the human body.

When microelectronic systems are used for medical applications, they have to meet high requirements in terms of biocompatibility, reliability, energy...

Im Focus: When predictions of theoretical chemists become reality

Thomas Heine, Professor of Theoretical Chemistry at TU Dresden, together with his team, first predicted a topological 2D polymer in 2019. Only one year later, an international team led by Italian researchers was able to synthesize these materials and experimentally prove their topological properties. For the renowned journal Nature Materials, this was the occasion to invite Thomas Heine to a News and Views article, which was published this week. Under the title "Making 2D Topological Polymers a reality" Prof. Heine describes how his theory became a reality.

Ultrathin materials are extremely interesting as building blocks for next generation nano electronic devices, as it is much easier to make circuits and other...

Im Focus: Rolling into the deep

Scientists took a leukocyte as the blueprint and developed a microrobot that has the size, shape and moving capabilities of a white blood cell. Simulating a blood vessel in a laboratory setting, they succeeded in magnetically navigating the ball-shaped microroller through this dynamic and dense environment. The drug-delivery vehicle withstood the simulated blood flow, pushing the developments in targeted drug delivery a step further: inside the body, there is no better access route to all tissues and organs than the circulatory system. A robot that could actually travel through this finely woven web would revolutionize the minimally-invasive treatment of illnesses.

A team of scientists from the Max Planck Institute for Intelligent Systems (MPI-IS) in Stuttgart invented a tiny microrobot that resembles a white blood cell...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

Dresden Nexus Conference 2020: Same Time, Virtual Format, Registration Opened

19.05.2020 | Event News

Aachen Machine Tool Colloquium AWK'21 will take place on June 10 and 11, 2021

07.04.2020 | Event News

International Coral Reef Symposium in Bremen Postponed by a Year

06.04.2020 | Event News

 
Latest News

German-British Research project for even more climate protection in the rail industry

28.05.2020 | Transportation and Logistics

A special elemental magic

28.05.2020 | Physics and Astronomy

Skoltech scientists get a sneak peek of a key process in battery 'life'

28.05.2020 | Power and Electrical Engineering

VideoLinks
Science & Research
Overview of more VideoLinks >>>