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Functional community structure of African monodominant Gilbertiodendron dewevrei forest influenced by local environmental filtering

(2017) ECOLOGY AND EVOLUTION. 7(1). p.295-304
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Abstract
Monodominant patches of forest dominated by Gilbertiodendron dewevrei are commonly found in central African tropical forests, alongside forests with high species diversity. Although these forests are generally found sparsely distributed along rivers, their occurrence is not thought to be (clearly) driven by edaphic conditions but rather by trait combinations of G. dewevrei that aid in achieving monodominance. Functional community structure between these monodominant and mixed forests has, however, not yet been compared. Additionally, little is known about nondominant species in the monodominant forest community. These two topics are addressed in this study. We investigate the functional community structure of 10 one-hectare plots of monodominant and mixed forests in a central region of the Congo basin, in DR Congo. Thirteen leaf and wood traits are measured, covering 95% (basal area weighted) of all species present in the plots, including leaf nutrient contents, leaf isotopic compositions, specific leaf area, wood density, and vessel anatomy. The trait-based assessment of G. dewevrei shows an ensemble of traits related to water use and transport that could be favorable for its location near forest rivers. Moreover, indications have been found for N and P limitations in the monodominant forest, possibly related to ectomycorrhizal associations formed with G. dewevrei. Reduced leaf N and P contents are found at the community level for the monodominant forest and for different nondominant groups, as compared to those in the mixed forest. In summary, this work shows that environmental filtering does prevail in the monodominant G. dewevrei forest, leading to lower functional diversity in this forest type, with the dominant species showing beneficial traits related to its common riverine locations and with reduced soil N and P availability found in this environment, both coregulating the tree community assembly.
Keywords
Democratic Republic of Congo, environmental filtering, functional traits, Gilbertiodendron dewevrei, plant population and community dynamics, single-species dominance, species establishment, TROPICAL RAIN-FORESTS, MYCORRHIZAL FUNGI, NITROGEN ISOTOPES, DIVERSITY, TREE, ECOLOGY, TRAITS, PHOTOSYNTHESIS, CONSTRAINTS, MECHANISMS

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Chicago
Kearsley, Elizabeth, Hans Verbeeck, Koen Hufkens, Frederik Van de Perre, Sebastian Doetterl, Geert Baert, Hans Beeckman, Pascal Boeckx, and Dries Huygens. 2017. “Functional Community Structure of African Monodominant Gilbertiodendron Dewevrei Forest Influenced by Local Environmental Filtering.” Ecology and Evolution 7 (1): 295–304.
APA
Kearsley, E., Verbeeck, H., Hufkens, K., Van de Perre, F., Doetterl, S., Baert, G., Beeckman, H., et al. (2017). Functional community structure of African monodominant Gilbertiodendron dewevrei forest influenced by local environmental filtering. ECOLOGY AND EVOLUTION, 7(1), 295–304.
Vancouver
1.
Kearsley E, Verbeeck H, Hufkens K, Van de Perre F, Doetterl S, Baert G, et al. Functional community structure of African monodominant Gilbertiodendron dewevrei forest influenced by local environmental filtering. ECOLOGY AND EVOLUTION. 2017;7(1):295–304.
MLA
Kearsley, Elizabeth, Hans Verbeeck, Koen Hufkens, et al. “Functional Community Structure of African Monodominant Gilbertiodendron Dewevrei Forest Influenced by Local Environmental Filtering.” ECOLOGY AND EVOLUTION 7.1 (2017): 295–304. Print.
@article{8506202,
  abstract     = {Monodominant patches of forest dominated by Gilbertiodendron dewevrei are commonly found in central African tropical forests, alongside forests with high species diversity. Although these forests are generally found sparsely distributed along rivers, their occurrence is not thought to be (clearly) driven by edaphic conditions but rather by trait combinations of G. dewevrei that aid in achieving monodominance. Functional community structure between these monodominant and mixed forests has, however, not yet been compared. Additionally, little is known about nondominant species in the monodominant forest community. These two topics are addressed in this study. We investigate the functional community structure of 10 one-hectare plots of monodominant and mixed forests in a central region of the Congo basin, in DR Congo. Thirteen leaf and wood traits are measured, covering 95\% (basal area weighted) of all species present in the plots, including leaf nutrient contents, leaf isotopic compositions, specific leaf area, wood density, and vessel anatomy. The trait-based assessment of G. dewevrei shows an ensemble of traits related to water use and transport that could be favorable for its location near forest rivers. Moreover, indications have been found for N and P limitations in the monodominant forest, possibly related to ectomycorrhizal associations formed with G. dewevrei. Reduced leaf N and P contents are found at the community level for the monodominant forest and for different nondominant groups, as compared to those in the mixed forest. In summary, this work shows that environmental filtering does prevail in the monodominant G. dewevrei forest, leading to lower functional diversity in this forest type, with the dominant species showing beneficial traits related to its common riverine locations and with reduced soil N and P availability found in this environment, both coregulating the tree community assembly.},
  author       = {Kearsley, Elizabeth and Verbeeck, Hans and Hufkens, Koen and Van de Perre, Frederik and Doetterl, Sebastian and Baert, Geert and Beeckman, Hans and Boeckx, Pascal and Huygens, Dries},
  issn         = {2045-7758},
  journal      = {ECOLOGY AND EVOLUTION},
  keyword      = {Democratic Republic of Congo,environmental filtering,functional traits,Gilbertiodendron dewevrei,plant population and community dynamics,single-species dominance,species establishment,TROPICAL RAIN-FORESTS,MYCORRHIZAL FUNGI,NITROGEN ISOTOPES,DIVERSITY,TREE,ECOLOGY,TRAITS,PHOTOSYNTHESIS,CONSTRAINTS,MECHANISMS},
  language     = {eng},
  number       = {1},
  pages        = {295--304},
  title        = {Functional community structure of African monodominant Gilbertiodendron dewevrei forest influenced by local environmental filtering},
  url          = {http://dx.doi.org/10.1002/ece3.2589},
  volume       = {7},
  year         = {2017},
}

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