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Home NEWS Science News

Risk of tree species disappearing in central Africa ‘a major concern,’ say researchers

Bioengineer by Bioengineer
January 17, 2017
in Science News
Reading Time: 3 mins read
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IMAGE

Credit: Morin-Rivat et al.

Human disturbance may often be criticised for harming the environment, but new research suggests a persistent lack of human attention in the central African forest could actually cause some tree species to disappear.

The study, from Gembloux Agro-Bio Tech – Université de Liège and the Royal Museum for Central Africa, both in Belgium, presents challenges to current practices in forest maintenance and suggests how more effective measures could be taken in future. The findings are published in the journal eLife.

"Populations of light-demanding trees that dominate the canopy of central African forests are currently aging. With previous studies showing that few young trees are growing to replace them, they are likely to disappear if the forests are not properly maintained. This is a major concern," says first author Julie Morin-Rivat.

In the current study, Morin-Rivat and her team set out to understand what has happened in the central African forest to stop the regeneration of the light-demanding trees.

Their analyses, which focused on four species in the northern Congo Basin, showed that most of the trees in these species were about 165 years old, meaning they all grew from young trees that settled in the middle of the 19th century.

They then combined information from a number of datasets and historical records to reveal that many people lived in the forest before this time, creating clearings that turned it into a relatively patchy landscape. However, from about 1850 onwards, when Europeans started to colonise the region, people and villages were moved out of the forests and closer to rivers and roads for administrative and commercial purposes. Additionally, many people died in conflicts or through emerging diseases.

"Fewer people in the forest meant it became less disturbed," Morin-Rivat explains.

"Human disturbance is necessary to maintain certain forest habitats and trees, including light-demanding species. As common logging operations do not create openings large enough to guarantee that such species will be able to establish themselves naturally, complementary treatments are needed. These might include selectively logging mature trees around young members of light-demanding species, or planting threatened species."

###

Reference

The paper 'Present-day central African forest is a legacy of the 19th century human history' can be freely accessed online at http://dx.doi.org/10.7554/eLife.20343. Contents, including text, figures, and data, are free to reuse under a CC BY 4.0 license.

Media contact

Emily Packer, eLife
[email protected]
01223 855373

About eLife

eLife is a unique collaboration between the funders and practitioners of research to improve the way important research is selected, presented, and shared. eLife publishes outstanding works across the life sciences and biomedicine — from basic biological research to applied, translational, and clinical studies. All papers are selected by active scientists in the research community. Decisions and responses are agreed by the reviewers and consolidated by the Reviewing Editor into a single, clear set of instructions for authors, removing the need for laborious cycles of revision and allowing authors to publish their findings quickly. eLife is supported by the Howard Hughes Medical Institute, the Max Planck Society, and the Wellcome Trust. Learn more at elifesciences.org.

Media Contact

Emily Packer
[email protected]
01-223-855-373
@elife

http://www.elifesciences.org

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Story Source: Materials provided by Scienmag

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