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Mixed-forest species establishment in a monodominant forest in Central Africa: implications for tropical forest invasibility

Mixed-forest species establishment in a monodominant forest in Central Africa: implications for tropical forest invasibility
Mixed-forest species establishment in a monodominant forest in Central Africa: implications for tropical forest invasibility
Background

Traits of non-dominant mixed-forest tree species and their synergies for successful co-occurrence in monodominant Gilbertiodendron dewevrei forest have not yet been investigated. Here we compared the tree species diversity of the monodominant forest with its adjacent mixed forest and then determined which fitness proxies and life history traits of the mixed-forest tree species were most associated with successful co-existence in the monodominant forest.

Methodology/Principal Findings

We sampled all trees (diameter in breast height [dbh]?10 cm) within 6×1 ha topographically homogenous areas of intact central African forest in SE Cameroon, three independent patches of G. dewevrei-dominated forest and three adjacent areas (450–800 m apart). Monodominant G. dewevrei forest had lower sample-controlled species richness, species density and population density than its adjacent mixed forest in terms of stems with dbh?10 cm. Analysis of a suite of population-level characteristics, such as relative abundance and geographical distribution, and traits such as wood density, height, diameter at breast height, fruit/seed dispersal mechanism and light requirement–revealed after controlling for phylogeny, species that co-occur with G. dewevrei tend to have higher abundance in adjacent mixed forest, higher wood density and a lower light requirement.

Conclusions/Significance

Our results suggest that certain traits (wood density and light requirement) and population-level characteristics (relative abundance) may increase the invasibility of a tree species into a tropical closed-canopy system. Such knowledge may assist in the pre-emptive identification of invasive tree species.
1932-6203
e97585
Peh, Kelvin S.-H.
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Sonké, Bonaventure
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Séné, Olivier
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Djuikouo, Marie-Noël K.
444e0fe7-2711-44cd-83ed-cc728caa8c34
Nguembou, Charlemagne K.
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Taedoumg, Hermann
58a998e8-1814-4053-95ea-0aac52fc583c
Begne, Serge K.
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Lewis, Simon L.
0442a91d-93f1-48ee-aca3-1a4757f0c7fa
Peh, Kelvin S.-H.
0bd60207-dad8-43fb-a84a-a15e09b024cc
Sonké, Bonaventure
7b0779d1-888b-465b-99d9-11695ab93ccd
Séné, Olivier
8b03af6f-e40a-46a2-b300-164c6d927822
Djuikouo, Marie-Noël K.
444e0fe7-2711-44cd-83ed-cc728caa8c34
Nguembou, Charlemagne K.
a8f88547-1a27-48ec-8d94-7d8f4ea418f9
Taedoumg, Hermann
58a998e8-1814-4053-95ea-0aac52fc583c
Begne, Serge K.
52b1e2b6-4971-4de7-befc-87da321e2937
Lewis, Simon L.
0442a91d-93f1-48ee-aca3-1a4757f0c7fa

Peh, Kelvin S.-H., Sonké, Bonaventure, Séné, Olivier, Djuikouo, Marie-Noël K., Nguembou, Charlemagne K., Taedoumg, Hermann, Begne, Serge K. and Lewis, Simon L. (2014) Mixed-forest species establishment in a monodominant forest in Central Africa: implications for tropical forest invasibility. PLoS ONE, 9 (5), e97585. (doi:10.1371/journal.pone.0097585).

Record type: Article

Abstract

Background

Traits of non-dominant mixed-forest tree species and their synergies for successful co-occurrence in monodominant Gilbertiodendron dewevrei forest have not yet been investigated. Here we compared the tree species diversity of the monodominant forest with its adjacent mixed forest and then determined which fitness proxies and life history traits of the mixed-forest tree species were most associated with successful co-existence in the monodominant forest.

Methodology/Principal Findings

We sampled all trees (diameter in breast height [dbh]?10 cm) within 6×1 ha topographically homogenous areas of intact central African forest in SE Cameroon, three independent patches of G. dewevrei-dominated forest and three adjacent areas (450–800 m apart). Monodominant G. dewevrei forest had lower sample-controlled species richness, species density and population density than its adjacent mixed forest in terms of stems with dbh?10 cm. Analysis of a suite of population-level characteristics, such as relative abundance and geographical distribution, and traits such as wood density, height, diameter at breast height, fruit/seed dispersal mechanism and light requirement–revealed after controlling for phylogeny, species that co-occur with G. dewevrei tend to have higher abundance in adjacent mixed forest, higher wood density and a lower light requirement.

Conclusions/Significance

Our results suggest that certain traits (wood density and light requirement) and population-level characteristics (relative abundance) may increase the invasibility of a tree species into a tropical closed-canopy system. Such knowledge may assist in the pre-emptive identification of invasive tree species.

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More information

Accepted/In Press date: 17 April 2014
Published date: 20 May 2014
Organisations: Centre for Biological Sciences

Identifiers

Local EPrints ID: 377365
URI: http://eprints.soton.ac.uk/id/eprint/377365
ISSN: 1932-6203
PURE UUID: 462fc00c-017c-49be-ae49-79040e922e98
ORCID for Kelvin S.-H. Peh: ORCID iD orcid.org/0000-0002-2921-1341

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Date deposited: 10 Jun 2015 11:14
Last modified: 26 Nov 2019 01:37

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Contributors

Author: Bonaventure Sonké
Author: Olivier Séné
Author: Marie-Noël K. Djuikouo
Author: Charlemagne K. Nguembou
Author: Hermann Taedoumg
Author: Serge K. Begne
Author: Simon L. Lewis

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