The spatial analysis of the flora of the peri-urban forest of Djoumouna has been conducted in Brazzaville, Congo. Data collection, conducted from April to August 2017, is based on a floristic inventory of 75 plots of each 400 m2 (20 m x 20 m). The study shows 898 trees of dbh ≥ 10 cm corresponding to 106 species and 36 families. The number of individuals per plot averages 11.97 ± 0.42 feet/plot while the number of species per plot averages 7.37 ± 0.30. The land used by projecting the trunk sections is on average 0.74 ± 0.05 m2/plot. The Jaccard similarity coefficient between plots is between 0 and 75% while the average Skewness is 1.26 ± 0.11. The average Shannon index is 1.77 ± 0.05 per plot with an average maximum diversity of 1.93 ± 0.04. The average Pielou index is 0.91 ± 0.01. The absolute diversity index averages 6.54 ± 0.29 while α-Fisher averages 11.44 ± 1.39. The average value of the Green index is -0.04 ± 0.01 and finally 7.55% of taxa have a rarefaction index of species between 40 and 77% compared to 92.45% where this index varies from 81 to 99%. The upward hierarchical classification and the AFC highlight the presence of floristic subfacies resulting from taxa independence. Since most species have a density of less than 1 tree.ha-1, the floristic composition is heterogeneous, resulting in insufficient natural regeneration and low resilience of this ecosystem threatened with extinction in the very short term.
| Published in | Ecology and Evolutionary Biology (Volume 4, Issue 1) |
| DOI | 10.11648/j.eeb.20190401.11 |
| Page(s) | 1-10 |
| Creative Commons |
This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited. |
| Copyright |
Copyright © The Author(s), 2019. Published by Science Publishing Group |
Congo, Peri-urban Forest, Plant Diversity, Bio-Ecological Diversity Indices, Structural Parameters
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APA Style
Victor Kimpouni, Jean de Dieu Nzila, Charmes-Maïdet Massamba-Makanda, Salisou Yallo Mouhamed, Jean-Pierre Kampe. (2019). Spatial Analysis of the Woody Flora of the Djoumouna Peri-urban Forest, Brazzaville (Congo). Ecology and Evolutionary Biology, 4(1), 1-10. https://doi.org/10.11648/j.eeb.20190401.11
ACS Style
Victor Kimpouni; Jean de Dieu Nzila; Charmes-Maïdet Massamba-Makanda; Salisou Yallo Mouhamed; Jean-Pierre Kampe. Spatial Analysis of the Woody Flora of the Djoumouna Peri-urban Forest, Brazzaville (Congo). Ecol. Evol. Biol. 2019, 4(1), 1-10. doi: 10.11648/j.eeb.20190401.11
AMA Style
Victor Kimpouni, Jean de Dieu Nzila, Charmes-Maïdet Massamba-Makanda, Salisou Yallo Mouhamed, Jean-Pierre Kampe. Spatial Analysis of the Woody Flora of the Djoumouna Peri-urban Forest, Brazzaville (Congo). Ecol Evol Biol. 2019;4(1):1-10. doi: 10.11648/j.eeb.20190401.11
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Download@article{10.11648/j.eeb.20190401.11,
author = {Victor Kimpouni and Jean de Dieu Nzila and Charmes-Maïdet Massamba-Makanda and Salisou Yallo Mouhamed and Jean-Pierre Kampe},
title = {Spatial Analysis of the Woody Flora of the Djoumouna Peri-urban Forest, Brazzaville (Congo)},
journal = {Ecology and Evolutionary Biology},
volume = {4},
number = {1},
pages = {1-10},
doi = {10.11648/j.eeb.20190401.11},
url = {https://doi.org/10.11648/j.eeb.20190401.11},
eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.eeb.20190401.11},
abstract = {The spatial analysis of the flora of the peri-urban forest of Djoumouna has been conducted in Brazzaville, Congo. Data collection, conducted from April to August 2017, is based on a floristic inventory of 75 plots of each 400 m2 (20 m x 20 m). The study shows 898 trees of dbh ≥ 10 cm corresponding to 106 species and 36 families. The number of individuals per plot averages 11.97 ± 0.42 feet/plot while the number of species per plot averages 7.37 ± 0.30. The land used by projecting the trunk sections is on average 0.74 ± 0.05 m2/plot. The Jaccard similarity coefficient between plots is between 0 and 75% while the average Skewness is 1.26 ± 0.11. The average Shannon index is 1.77 ± 0.05 per plot with an average maximum diversity of 1.93 ± 0.04. The average Pielou index is 0.91 ± 0.01. The absolute diversity index averages 6.54 ± 0.29 while α-Fisher averages 11.44 ± 1.39. The average value of the Green index is -0.04 ± 0.01 and finally 7.55% of taxa have a rarefaction index of species between 40 and 77% compared to 92.45% where this index varies from 81 to 99%. The upward hierarchical classification and the AFC highlight the presence of floristic subfacies resulting from taxa independence. Since most species have a density of less than 1 tree.ha-1, the floristic composition is heterogeneous, resulting in insufficient natural regeneration and low resilience of this ecosystem threatened with extinction in the very short term.},
year = {2019}
}
TY - JOUR T1 - Spatial Analysis of the Woody Flora of the Djoumouna Peri-urban Forest, Brazzaville (Congo) AU - Victor Kimpouni AU - Jean de Dieu Nzila AU - Charmes-Maïdet Massamba-Makanda AU - Salisou Yallo Mouhamed AU - Jean-Pierre Kampe Y1 - 2019/03/20 PY - 2019 N1 - https://doi.org/10.11648/j.eeb.20190401.11 DO - 10.11648/j.eeb.20190401.11 T2 - Ecology and Evolutionary Biology JF - Ecology and Evolutionary Biology JO - Ecology and Evolutionary Biology SP - 1 EP - 10 PB - Science Publishing Group SN - 2575-3762 UR - https://doi.org/10.11648/j.eeb.20190401.11 AB - The spatial analysis of the flora of the peri-urban forest of Djoumouna has been conducted in Brazzaville, Congo. Data collection, conducted from April to August 2017, is based on a floristic inventory of 75 plots of each 400 m2 (20 m x 20 m). The study shows 898 trees of dbh ≥ 10 cm corresponding to 106 species and 36 families. The number of individuals per plot averages 11.97 ± 0.42 feet/plot while the number of species per plot averages 7.37 ± 0.30. The land used by projecting the trunk sections is on average 0.74 ± 0.05 m2/plot. The Jaccard similarity coefficient between plots is between 0 and 75% while the average Skewness is 1.26 ± 0.11. The average Shannon index is 1.77 ± 0.05 per plot with an average maximum diversity of 1.93 ± 0.04. The average Pielou index is 0.91 ± 0.01. The absolute diversity index averages 6.54 ± 0.29 while α-Fisher averages 11.44 ± 1.39. The average value of the Green index is -0.04 ± 0.01 and finally 7.55% of taxa have a rarefaction index of species between 40 and 77% compared to 92.45% where this index varies from 81 to 99%. The upward hierarchical classification and the AFC highlight the presence of floristic subfacies resulting from taxa independence. Since most species have a density of less than 1 tree.ha-1, the floristic composition is heterogeneous, resulting in insufficient natural regeneration and low resilience of this ecosystem threatened with extinction in the very short term. VL - 4 IS - 1 ER -
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