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Halt post-disturbance logging in forests, experts urge

Date:
September 23, 2020
Source:
University of Würzburg
Summary:
Please do not disturb: After forest fires, bark beetle infestations and other damage, the affected forests should not be cleared.
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Storms, fires, bark beetles: Many forests around the world are increasingly affected by these and other natural disturbances. It is common practice to eliminate the consequences of these disturbances -- in other words, to harvest damaged trees as quickly as possible. Spruce trees attacked by bark beetles are removed from the forest, as are dryed beeches or trees thrown to the ground by storms.

"However, this practice is an additional disturbance that has a negative impact on biodiversity," says Dr. Simon Thorn, forest ecologist from Julius-Maximilians-Universität (JMU) Würzburg in Bavaria, Germany. During such logging operations, soil is damaged, most dead wood is removed and structures such as folded up root plates are lost. "That is why a certain proportion of such disturbed forests should be excluded from overall logging operations," Thorn says.

Evidence-based benchmarks calculated for the first time

Forests in which natural disturbances are preserved without human intervention are among the most threatened habitats in the world. "Up to now, there have been no evidence-based benchmarks on what proportion of land in a naturally disturbed forest should be left in order to promote the biodiversity of plants, birds, insects and fungal species " says the JMU scientist.

To close this gap, an international research team led by Simon Thorn has analyzed data global dataset on natural forest disturbances. In the journal Nature Communications, the scientists conclude that if around 75 percent of a naturally disturbed forest area is not cleared, 90 percent of its original species richness will be preserved. If only half of a disturbed forest is left untouched, around a quarter of the species will be lost. "These numbers can serve as a simple rule of thumb for leaving natural disturbances in forests unlogged," says Thorn.


Story Source:

Materials provided by University of Würzburg. Original written by Robert Emmerich. Note: Content may be edited for style and length.


Journal Reference:

  1. Simon Thorn, Anne Chao, Kostadin B. Georgiev, Jörg Müller, Claus Bässler, John L. Campbell, Jorge Castro, Yan-Han Chen, Chang-Yong Choi, Tyler P. Cobb, Daniel C. Donato, Ewa Durska, Ellen Macdonald, Heike Feldhaar, Joseph B. Fontaine, Paula J. Fornwalt, Raquel María Hernández Hernández, Richard L. Hutto, Matti Koivula, Eun-Jae Lee, David Lindenmayer, Grzegorz Mikusiński, Martin K. Obrist, Michal Perlík, Josep Rost, Kaysandra Waldron, Beat Wermelinger, Ingmar Weiß, Michał Żmihorski, Alexandro B. Leverkus. Estimating retention benchmarks for salvage logging to protect biodiversity. Nature Communications, 2020; 11 (1) DOI: 10.1038/s41467-020-18612-4

Cite This Page:

University of Würzburg. "Halt post-disturbance logging in forests, experts urge." ScienceDaily. ScienceDaily, 23 September 2020. <www.sciencedaily.com/releases/2020/09/200923124751.htm>.
University of Würzburg. (2020, September 23). Halt post-disturbance logging in forests, experts urge. ScienceDaily. Retrieved March 28, 2024 from www.sciencedaily.com/releases/2020/09/200923124751.htm
University of Würzburg. "Halt post-disturbance logging in forests, experts urge." ScienceDaily. www.sciencedaily.com/releases/2020/09/200923124751.htm (accessed March 28, 2024).

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