Wood decay rates of 13 temperate tree species in relation to wood properties, enzyme activities and organismic diversities

FOREST ECOLOGY AND MANAGEMENT

卷:391

Article

Kahl, Tiemo^1,2  Arnstadt, Tobias³  Baber, Kristin^1,4  Baessler, Claus⁵  Bauhus, Juergen¹  Borken, Werner⁶  Buscot, Francois^7,8  Floren, Andreas⁹  Hessenmoeller, Dominik¹⁰  Hofrichter, Martin³  Hoppe, Bjoern^7,11  Kellner, Harald³  Krueger, Dirk⁷  Matzner, Egbert⁶  Otto, Peter¹²  Purahong, Witoon⁷  Seilwinder, Claudia¹³  Schulze, Ernst-Detlef¹⁰  Wende, Beate⁹  Weisser, Wolfgang W.¹³  Gossner, Martin M.^13,14 

[1] Univ Freiburg, Chair Silviculture, Tennenbacherstr 4, D-79106 Freiburg, Germany

[2] UNESCO Biosphere Reserve Thuringian Forest, Brunnenstr 1, D-98711 Schmiedefeld, Germany

[3] Tech Univ Dresden, Int Inst Zittau, Dept Bio & Environm Sci, Markt 23, D-02763 Zittau, Germany

[4] Univ Leipzig, Inst Biol, Dept Systemat Bot & Funct Biodivers, Johannisallee 21-23, D-04103 Leipzig, Germany

[5] Natl Pk Bavarian Forest, Freyunger Str 2, D-94481 Grafenau, Germany

[6] Univ Bayreuth, Bayreuth Ctr Ecol & Environm Res BayCEER, Soil Ecol, Dr Hans Frisch Str 1-3, D-95448 Bayreuth, Germany

[7] UFZ Helmholtz Ctr Environm Res, Dept Soil Ecol, Th Lieser Str 4, D-06120 Halle, Saale, Germany

[8] German Ctr Integrat Biodivers Res iDiv, Deutsch Pl 5e, D-04103 Leipzig, Germany

[9] Univ Wurzburg, Bioctr, Dept Anim Ecol & Trop Biol, D-97074 Wurzburg, Germany

[10] Max Planck Inst Biogeochem, Hans Knoll Str 10, D-07745 Jena, Germany

[11] Julius Kuhn Inst, Fed Res Ctr Cultivated Plants, Inst Natl & Int Plant Hlth, Messeweg 11-12, D-38104 Braunschweig, Germany

[12] Univ Leipzig, Inst Biol, Dept Mol Evolut & Plant Systemat, Johannisallee 21-23, D-04103 Leipzig, Germany

[13] Tech Univ Munich, Ctr Sch Life & Food Sci Weihenstephan, Dept Ecol & Ecosyst Management, Terr Ecol Res Grp, Hans Carl von Carlowia Pl 2, D-85354 Freising Weihenstephan, Germany

[14] Swiss Fed Res Inst WSL, Zurcherstr 111, CH-8903 Birmensdorf, Switzerland

关键词: Wood decomposition;    Ecosystem function;    Saproxylic beetles;    Biodiversity Exploratories;    Deadwood experiment;   

DOI  :  10.1016/j.foreco.2017.02.012

来源: Elsevier

【 摘 要 】

Deadwood decay is an important ecosystem process in forest ecosystems, but the relative contribution of specific wood properties of tree species, activities of wood-degrading enzymes, and decomposer communities such as fungi and insects is unclear. We ask whether wood properties, in particular differences between angiosperms and gymnosperms, and organismic diversity of colonizers contribute to wood decomposition. To test this, we exposed deadwood logs of 13 tree species, covering four gymnosperms and nine angiosperm species, in 30 plots under different forest management in three regions in Germany. After a decomposition time of 6.5 years Carpinus betulus and Fagus sylvatica showed the highest decay rates. We found a positive correlation of decay rate with enzyme activities, chemical wood properties (S. K concentration) and organismic diversity, while, heartwood character, lignin content, extractive concentration and phenol content were negatively correlated with decay rate across all 13 tree species. By applying a multi-model inference approach we found that the activity of the wood degrading enzymes laccase and endocellulase, beetle diversity, heartwood presence, wood ray height and fungal diversity were the most important predictor variables for wood decay. Although we were not able to identify direct cause and effect relations by our approach, we conclude that enzyme activity and organismic diversity are the main drivers of wood decay rate, which greatly differed among tree species. Maintaining high tree species diversity will therefore result in high structural deadwood diversity in terms of decay rate and decay stage. (C) 2017 Elsevier B.V. All rights reserved.

【 授权许可】

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