Tree identity rather than tree diversity drives earthworm communities in European forests

被引:17
作者
De Wandeler, Hans [1 ]
Bruelheide, Helge [2 ,3 ,4 ]
Dawud, Seid M. [5 ]
Danila, Gabriel [6 ]
Domisch, Timo [7 ]
Finer, Leena [7 ]
Hermy, Martin [1 ]
Jaroszewicz, Bogdan [8 ]
Joly, Francois-Xavier [9 ,13 ,14 ]
Mueller, Sandra [10 ]
Ratcliffe, Sophia [11 ]
Raulund-Rasmussen, Karsten [5 ]
Rota, Emilia [12 ]
Van Meerbeek, Koenraad [1 ]
Vesterdal, Lars [5 ]
Muys, Bart [1 ]
机构
[1] Univ Leuven, KU Leuven, Dept Earth & Environm Sci, Celestijnenlaan 200E Box 2411, BE-3001 Leuven, Belgium
[2] German Ctr Integrat Biodivers Res iDiv, Deutsch Pl 5e, D-04103 Leipzig, Germany
[3] Martin Luther Univ Halle Wittenberg, Inst Biol Geobot, Kirchtor 1, D-06108 Halle, Saale, Germany
[4] Martin Luther Univ Halle Wittenberg, Bot Garden, Kirchtor 1, D-06108 Halle, Saale, Germany
[5] Univ Copenhagen, Dept Geosci & Nat Resource Management, Rolighedsvej 23, DK-1958 Frederiksberg C, Denmark
[6] Univ Stefan Cel Mare Suceava, Forestry Fac, 13 Univ St, Suceava 720229, Romania
[7] Nat Resources Inst Finland, Box 68, FI-80101 Joensuu, Finland
[8] Univ Warsaw, Bialowieza Geobot Stn, Fac Biol, Sportowa 19, PL-17230 Bialowieza, Poland
[9] Univ Montpellier, Univ Paul Valery Montpellier, CNRS, Ctr Evolutionary & Funct Ecol,CEFE UMR 5175,EPHE, 1919 Route Mende, F-34293 Montpellier 5, France
[10] Univ Freiburg, Dept Geobot, Fac Biol, Schanzlestr 1, D-79104 Freiburg, Germany
[11] Univ Leipzig, Dept Special Bot & Funct Biodivers, D-04103 Leipzig, Germany
[12] Univ Siena, Dept Phys Earth & Environm Sci, Via P A Mattioli 4, IT-53100 Siena, Italy
[13] Arizona State Univ, Sch Earth & Space Explorat, Tempe, AZ 85287 USA
[14] Arizona State Univ, Sch Life Sci, Tempe, AZ 85287 USA
关键词
FunDivEUROPE; Litter functional traits; Litter quality; Soil fauna; Species richness; Tree functional diversity; LEAF-LITTER; SOIL PROPERTIES; PLANT DIVERSITY; CALCIUM-CARBONATE; SPECIES-DIVERSITY; FUNCTIONAL-GROUP; BEECH FORESTS; ELEVATED CO2; DECOMPOSITION; LUMBRICIDAE;
D O I
10.1016/j.pedobi.2018.01.003
中图分类号
Q14 [生态学(生物生态学)];
学科分类号
071012 ; 0713 ;
摘要
Given the key role of belowground biota on forest ecosystem functioning, it is important to identify the factors that influence their abundance and composition. However, the understanding of the ecological linkage between tree diversity and belowground biota is still insufficient. Here we investigated the influence of tree diversity (richness, True Shannon diversity index, functional diversity) and identity (proportion of evergreen leaf litter and leaf litter quality) on earthworm species richness and biomass at a continental and regional scale, using data from a Europe-wide forest research platform (FunDivEUROPE) spanning six major forest types. We found a marked tree identity effect at the continental scale, with proportion of evergreen leaf litter negatively affecting total earthworm biomass and species richness, as well as their biomass per functional group. Furthermore, there were clear litter quality effects with a latitudinal variation in trait-specific responses. In north and central Europe, earthworm biomass and species richness clearly increased with increasing litter nutrient concentrations (decreasing C:N ratio and increasing calcium concentration), whereas this influence of litter nutrients was absent or even reversed in southern Europe. In addition, although earthworms were unaffected by the number of tree species, tree diversity positively affected earthworm biomass at the continental scale through functional diversity of the leaf litter. By focusing on tree leaf litter traits, this study advanced our understanding of the mechanisms driving tree identity effects and supported previous findings that litter quality, as a proxy of tree identity, was a stronger driver of earthworm species richness and biomass than tree diversity.
引用
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页码:16 / 25
页数:10
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