Biotope tree
As habitat or habitat trees are trees designated, the special habitats ( biotopes , habitats offer) for other living things. These are often very old trees, some of which are already dying or dead. In particular, trees with woodpecker holes or with clumps of tree-breeding bird species, so-called eyrie trees , are among them. But also trees with special growth forms, with larger trunk or bark damage or with a high proportion of dead wood offer a habitat for many animals , plants or microorganisms .
Often these are trees that are not economically interesting due to their damage or growth deformation. In addition, trees are usually felled and recycled before they die. This eliminates the natural age and decay phase that occurs in primeval forests. For this reason, pronounced biotope trees are significantly less common in commercial forests than in natural forests . From the point of view of nature conservation , the lack of biotope trees must be counteracted. Since leaving and protecting such trees is a burden on business operations, public-sector forest owners in particular start programs to increase the proportion of biotope trees in the forest. These trees are left to their own devices and are not felled.
Germany
The Third National Forest Inventory (2012) found an average of 9 biotope trees per hectare in German forests . There are 93 million biotope trees in the entire German forest. 60 percent of them are deciduous trees.
The "Nature Conservation Guideline for the Hessian State Forest" from 2010, for example, specifies requirements for hardwood stands that are over 100 years old. Three habitat trees per hectare are to be preserved here.
The Lower Saxony State Forests have set themselves the goal of maintaining five habitat trees per hectare. The biotope tree and deadwood concept of the Rhineland-Palatinate municipal forest requires ten trees per hectare.
The state forest of Rhineland-Palatinate, however, rely on groups of biotopes. As a rule, the identification takes place in stocks of the maturity phase. A group of around 15 trees should be left for every three hectares.
Web links
- Podcast What is a biotope tree? on www.forstcast.net
Individual evidence
- ↑ "habitat trees" on nabu.de (pdf) S.5 , called on September 2, 2014
- ↑ "Biotope trees - valuable habitat in the forest" on waldwissen.net , accessed on September 2, 2014
- ↑ "Old trees with habitat structures (habitat trees)" on totholz.ch , accessed on September 2, 2014
- ↑ "Habitat trees in commercial forests: What number at what cost?" On waldwissen.net , accessed on September 2, 2014
- ↑ BMEL (Ed.): The Forest in Germany - Selected Results of the Third National Forest Inventory , p. 27.
- ↑ "Habitat trees in the Hessian State Forest", Nature Conservation Academy Hessen ( Memento of the original from June 10, 2014 in the Internet Archive ) Info: The archive link has been inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. , accessed on September 2, 2014
- ↑ Habitat tree concept of the Lower Saxony State Forests ( Memento of the original from September 3, 2014 in the Internet Archive ) Info: The archive link was automatically inserted and not yet checked. Please check the original and archive link according to the instructions and then remove this notice. , accessed on September 2, 2014
- ↑ Leaflet Biotope Tree and Deadwood Concept in the Rhineland-Palatinate Municipal Forest ( Memento of the original from September 3, 2014 in the Internet Archive ) Info: The archive link was automatically inserted and not yet checked. Please check the original and archive link according to the instructions and then remove this notice. , accessed on September 2, 2014
- ↑ BAT-KONZEPT Landesforsten Rheinland-Pfalz , accessed on September 2, 2014
