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German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig


Six guiding principles for the EU agricultural policy to halt biodiversity loss

The EU's Common Agricultural Policy (CAP) has three key measures to support biodiversity: Cross Compliance, Agri-Environment-Climate Measures, and Greening. Despite these measures, farmland biodiversity is still declining. A study by over 300 scientists recommends six guiding principles to improve the CAP for better biodiversity outcomes.

SourceGerman Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig·JournalConservation Letters·TypeData/statistical analysis·DateJun 30, 2022

Dinosaur extinction changed plant evolution

Research revealed that the absence of megaherbivores led to denser vegetations with larger seeds and fruits, as smaller animals could disperse these through their excretions. Defense traits like spines and thorns decreased during this gap but returned when new megaherbivores evolved.

SourceGerman Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig·JournalProceedings of the Royal Society B Biological Sciences·TypeData/statistical analysis·DateMay 2, 2022

European earthworms reduce insect populations in North American forests

Research found that invasive earthworms significantly reduce the number of insects, biomass, and species richness above ground in Canadian forests. The study suggests that changes in soil conditions caused by earthworms may also affect vegetation, but no significant alteration was detected.

SourceGerman Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig·JournalBiology Letters·TypeObservational study·DateMar 29, 2022

While some insects are declining, others might be thriving

A large-scale study analyzing long-term data on insects from over 900 locations worldwide found little evidence for indicator species. Different groups of insects showed different trends, highlighting the importance of monitoring multiple groups simultaneously to provide guidelines for conservation policies.

7 to 9 percent of all European vascular plants are globally threatened

An international research team has assessed European vascular plant species and found that 7-9% are globally endangered. This study addresses the significant data gap in global Red List of Threatened Species, with nearly 90% of known plant species lacking threat assessments.

SourceGerman Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig·JournalPlants People Planet·TypeData/statistical analysis·DateFeb 11, 2022

Well insured: Forests with many tree species grow more consistently

Research found that forests with diverse tree species exhibit higher growth stability and biomass production under fluctuating climate conditions. This is due to the diversity of species characteristics, such as asynchrony in growth patterns and drought-tolerance strategies, which counterbalance negative impacts of extreme weather events.

SourceGerman Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig·JournalScience Advances·TypeObservational study·DateDec 17, 2021

Climatic changes and overfishing depleted Baltic herring long before industrialization

A new study reveals that commercial fish stocks, including cod and herring, have been depleted for centuries due to overfishing and environmental changes. The research uses historical sources to show that the Baltic herring population collapsed in the 16th century, with a similar decline observed in cod stocks today.

SourceGerman Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig·JournalHansische Geschichtsblätter·TypeLiterature review·DateDec 1, 2021

From ambition to biodiversity action: Time to hold actors accountable

A team of scientists has proposed a three-step framework to implement global biodiversity goals at the national level. The first step involves translating global targets into national action plans, engaging various sectors in co-design. The second step requires implementing actions across sectors using behavioral intervention tools and...

SourceGerman Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig·JournalConservation Letters·TypeCommentary/editorial·DateNov 25, 2021

More and more roads but little knowledge about their impact on wildlife

A recent meta-study found that the existing data on road networks' impact on wildlife is limited to high-income countries and only a few species groups. The study highlights the need for further research to understand the effect of roads on threatened species and population dynamics.

SourceGerman Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig·JournalPerspectives in Ecology and Conservation·TypeMeta-analysis·DateOct 6, 2021

Coastal ecosystems worldwide: Billion-dollar carbon reservoirs

Coastal ecosystems worldwide are estimated to have a significant impact on the global economy, with countries like Australia and Indonesia storing large amounts of carbon. The study found that these countries generate annual welfare gains of around $26.4 billion from reduced climate change costs, while other nations like India and Chin...

Biodiversity is positively related to mental health

A new study by German researchers found that higher species diversity is positively related to mental health, with people living in regions with more plant and bird species reporting better mental well-being. However, the study did not find a significant relationship between biodiversity and physical health.

Short-lived plant species are more climate-sensitive

Researchers found that plant characteristics like generation time can predict how sensitive species are to changing climates. Short-lived plant species were shown to be particularly vulnerable to climate extremes. The study highlights the need for new population ecology research on woody plant species and tropical plants.

Plant responses to climate are lagged

A study by German Centre for Integrative Biodiversity Research (iDiv) found that plant species often respond to climate drivers months or even years later than previously assumed. The research analyzed 76 studies on 104 plant species and discovered that climate conditions during dormant seasons can have significant effects on plants.

Effectiveness of primate conservation measures mostly unproved

A recent study found that only 80 primate studies investigated the effectiveness of conservation interventions, highlighting a severe lack of evidence for effective conservation. The authors propose several actions to improve the evidence base, including increasing resources for intervention-effectiveness testing and publication.

Pollination is better in cities than in the countryside

A study by the German Centre for Integrative Biodiversity Research found that flowering plants are better pollinated in urban areas than in rural regions. Bees, particularly bumblebees, played a crucial role in this process. The researchers recommend considering the needs of bees when planning green spaces in both cities and countryside.