Plant communities of a semi-deciduous tropical rainforest in north-western Uganda: role of soil and anthropogenic factors

Forest plant communities were described using two floristic data sets (accompanied by data on soil and former management practices) from the Budongo Forest Reserve (BFR), Uganda – a semi-deciduous tropical rainforest. The first data set featured species basal-area data for woody species, while the o...

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Main Authors: Mucina, Ladislav, Mwavu, E., Witkowski, E.
Format: Journal Article
Published: 2008
Online Access:http://hdl.handle.net/20.500.11937/7223
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author Mucina, Ladislav
Mwavu, E.
Witkowski, E.
author_facet Mucina, Ladislav
Mwavu, E.
Witkowski, E.
author_sort Mucina, Ladislav
building Curtin Institutional Repository
collection Online Access
description Forest plant communities were described using two floristic data sets (accompanied by data on soil and former management practices) from the Budongo Forest Reserve (BFR), Uganda – a semi-deciduous tropical rainforest. The first data set featured species basal-area data for woody species, while the other data set featured abundance for woody plants of stem diameter ≥ 2.0 cm. Four forest community types: Pseudospondias microcarpa Swamp Forest, Funtumia elastica–Pouteria altissima Forest, Lasiodiscus mildbraedii–Khaya anthotheca Forest, and Cynometra alexandri–Rinorea ilicifolia Forest were distinguished. Each community is characterised by a group of species, however there are a considerable number of species shared by all four communities. The forest communities show clear separation along gradients of screened soil characteristics (i.e. Organic matter, Na, N, Ca, Mg, and Si), corroborating the results suggested by the canonical correspondence analysis (CCA). For the species basal-area data, Axes 1 and 2 of the CCA explained 18 % in species, and 34 % of the variance in species-environment relations. Whereas, for the abundance data, the amount of information accounted for by the first two axes was 25 % and 44 %, in species variance and species-environment relations, respectively. Axis 1 of CCA was strongly correlated with soil nutrients, while Axis 2 was correlated with logging and arboricide treatment. Accordingly we interpret Axis 1 as an edaphic gradient, while Axis 2 is depicting an anthropogenic disturbance gradient.
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spelling curtin-20.500.11937-72232019-05-21T06:13:34Z Plant communities of a semi-deciduous tropical rainforest in north-western Uganda: role of soil and anthropogenic factors Mucina, Ladislav Mwavu, E. Witkowski, E. Forest plant communities were described using two floristic data sets (accompanied by data on soil and former management practices) from the Budongo Forest Reserve (BFR), Uganda – a semi-deciduous tropical rainforest. The first data set featured species basal-area data for woody species, while the other data set featured abundance for woody plants of stem diameter ≥ 2.0 cm. Four forest community types: Pseudospondias microcarpa Swamp Forest, Funtumia elastica–Pouteria altissima Forest, Lasiodiscus mildbraedii–Khaya anthotheca Forest, and Cynometra alexandri–Rinorea ilicifolia Forest were distinguished. Each community is characterised by a group of species, however there are a considerable number of species shared by all four communities. The forest communities show clear separation along gradients of screened soil characteristics (i.e. Organic matter, Na, N, Ca, Mg, and Si), corroborating the results suggested by the canonical correspondence analysis (CCA). For the species basal-area data, Axes 1 and 2 of the CCA explained 18 % in species, and 34 % of the variance in species-environment relations. Whereas, for the abundance data, the amount of information accounted for by the first two axes was 25 % and 44 %, in species variance and species-environment relations, respectively. Axis 1 of CCA was strongly correlated with soil nutrients, while Axis 2 was correlated with logging and arboricide treatment. Accordingly we interpret Axis 1 as an edaphic gradient, while Axis 2 is depicting an anthropogenic disturbance gradient. 2008 Journal Article http://hdl.handle.net/20.500.11937/7223 10.1127/0340-269X/2008/0038-0003 restricted
spellingShingle Mucina, Ladislav
Mwavu, E.
Witkowski, E.
Plant communities of a semi-deciduous tropical rainforest in north-western Uganda: role of soil and anthropogenic factors
title Plant communities of a semi-deciduous tropical rainforest in north-western Uganda: role of soil and anthropogenic factors
title_full Plant communities of a semi-deciduous tropical rainforest in north-western Uganda: role of soil and anthropogenic factors
title_fullStr Plant communities of a semi-deciduous tropical rainforest in north-western Uganda: role of soil and anthropogenic factors
title_full_unstemmed Plant communities of a semi-deciduous tropical rainforest in north-western Uganda: role of soil and anthropogenic factors
title_short Plant communities of a semi-deciduous tropical rainforest in north-western Uganda: role of soil and anthropogenic factors
title_sort plant communities of a semi-deciduous tropical rainforest in north-western uganda: role of soil and anthropogenic factors
url http://hdl.handle.net/20.500.11937/7223