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Home NEWS Science News Biology

How much rainforest do birds need?

Bioengineer by Bioengineer
January 22, 2019
in Biology
Reading Time: 2 mins read
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Credit: Elleni Vendras


Researchers of the Department of Conservation Biology at the University of Göttingen have carried out research in Southwest Cameroon to assess which proportion of forest would be necessary in order to provide sufficient habitat for rainforest bird species. The results of the study were published in the journal Biological Conservation.

The Göttingen team investigated relationships between forest cover and bird species richness using data from a 4,000 km2 large rainforest landscape. The study area contains protected areas as well as smallholder agroforestry systems and industrial oil palm plantations. The study documents minimum thresholds of forest cover in farmland below which original bird communities begin to change and where they are already dominated by species which don’t depend on forest. The data suggest that forest cover ought not to fall below 40 percent if drastic losses in original bird species are to be avoided. Importantly, the study also shows that highly specialised bird species already start to decline significantly when the percentage of forest dips to as much as 70 percent; at these forest cover levels, these birds are beginning to be replaced by “generalists”, ie birds that are at home in different habitats.

“The threshold values we are discussing here should play a role in defining strategies for conservation in tropical forest landscapes,” says Denis Kupsch, first author of the study. This is particularly important because the pressure to use agricultural land intensively is constantly increasing in tropical regions. “It would therefore make sense for land-use planning and legislation in the future to be geared more to such limits in order to achieve a sustainable coexistence of industrial agricultural production, smallholder agriculture and protected area management.” According to the authors, smallholder agricultural forest systems in particular, which represent a near-natural cultivated landscape and at the same time preserve a high proportion of natural forest, could play a significant role in this.

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Original publication: Kupsch et al.: High critical forest habitat thresholds of native bird communities in Afrotropical agroforestry landscapes. Biological Conservation (2019). DOI: 10.1016/j.biocon.2018.12.001

Contact:

Denis Kupsch

University of Göttingen

Johann-Friedrich-Blumenbach Institute for Zoology und Anthropology

Conservation Biology/Workgroup on Endangered Species

Bürgerstraße 50, 37073 Göttingen

Telephone: +49 (0)551 395636

E-mail: [email protected]

http://www.uni-goettingen.de/en/108763.html

Professor Matthias Waltert

Telephone: +49 (0)551 395638

E-mail: [email protected]

Media Contact
Melissa Sollich
[email protected]
49-551-392-6228

Original Source

https://www.uni-goettingen.de/en/3240.html?id=5313

Related Journal Article

http://dx.doi.org/10.1016/j.biocon.2018.12.001

Tags: AgricultureBiodiversityBiologyBiomedical/Environmental/Chemical EngineeringEcology/EnvironmentEnvironmental HealthForestryNatureZoology/Veterinary Science
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