Caractérisation des formations végétales pâturées de la zone guinéenne du Togo : typologie, évaluation de la biomasse, diversité, valeur fourragère et régénération

Amegnaglo, Kossi Béssan; Dourma, Marra; Akpavi, Sêmihinva; Akodewou, Amah; Wala, Kpérkouma; Diwediga, Badabaté; Atakpama, Wouyo; Agbodan, Kodjovi Mawuégnigan Léonard; Batawila, Komlan; Akpagana, Koffi

doi:10.4314/ijbcs.v12i5.9

Cited by 8 publications

(5 citation statements)

References 17 publications

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“…The main biological types found in the studied natural pastures were phanerophytes and therophytes. Similar results were obtained by [22] in the grazed vegetation of the Guinean zone in Togo and [4] in the Bambouto and Mbapit mountains in Cameroon. In fact, phanerophytes reflect the adaptive stage of plants following a competitive strategy.…”

Section: Biological and Phytogeographical Typessupporting

confidence: 88%

Floristic diversity and management of fodder resources of the natural pastures of the Savanna Highlands of Western Cameroon

Baudoin¹,

Louise²,

Yougouda³

et al. 2020

JES

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Sustainable management of pastoral resources requires knowledge in terms of floristic diversity and productivity of the rangelands. The objective of the present study carried out in the Bamboutos Mountains was to assess the floristic diversity and carrying capacity of the natural pastures. Floristic inventory was done using the method of quadrat point aligned in 15 plots of 400 m². Aerial phytomass of herbaceous plants was measured by the full harvest method. A total of 74 species, including 09 woody plants belonging to 56 genera and 20 families were recorded. The number of taxa recorded in the plots varied from 11 to 36 species. Imperata cylindrica with a specific contribution of presence of 17.45% was the most abundant species in the rangeland. The species-richest families were Poaceae, Fabaceae, Asteraceae and Cyperaceae. The calculated pastoral value of the pasture was 56.21%. These pastures were dominated by phanerophytes (29.72%) and therophytes (24.32%). The forage productivity of the grazed area, estimated based on the regrowth biomass was 6498.57 kg DM/ha while the carrying capacity of the rangeland was 2.31 TLU/ha. These results showed that the fodder potential of the Bamboutos Mountains is enough diversified but remains under exploited.

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Section: Biological and Phytogeographical Typessupporting

confidence: 88%

Floristic diversity and management of fodder resources of the natural pastures of the Savanna Highlands of Western Cameroon

Baudoin¹,

Louise²,

Yougouda³

et al. 2020

JES

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“…D'ailleurs, les cinq premières familles les plus diversifiées dans les cultures de sorgho appartiennent à cette catégorie. La part prépondérante des Fabaceae et des Poaceae est en accord avec les observations de nombreux auteurs qui ont travaillé en région tropicale (Takim et Amodu, 2013 ;Osawaru et al, 2014 ;Ahonon et al, 2018 ;Amegnaglo et al, 2018) et au Sénégal (Noba, 2002 ;Noba et al, 2004 ;Sarr et al, 2007 ;Bassène, 2014) et semble être une des spécificités de la flore adventice des milieux cultivés en zone sahélienne (Traoré, 1992). Présentes à plus de 72%, les dicotylédones renferment 168 espèces distribuées dans 35 familles tandis que les monocotylédones sont représentées par 64 espèces et 8 familles.…”

Section: Discussionunclassified

Flore adventice du sorgho (<i>Sorghum bicolor</i> [L.] Moench) en Haute Casamance, zone soudanienne du Sénégal

Ka¹,

Mbaye²,

Guèye³

et al. 2019

Int. J. Bio. Chem. Sci

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Au Sénégal, le sorgho est l'une des principales cultures vivrières cependant sa production est fortement limité par la compétition des adventices. Cette étude a été réalisée dans le but de caractériser la structure de la flore adventice du sorgho en Haute Casamance. Des relevés floristiques ont été effectués au cours des campagnes culturales 2015, 2016 et 2017 dans les champs de sorgho en milieu paysan et en stations expérimentales. Les résultats montrent que la flore adventice du sorgho est constituée de 232 espèces réparties dans 138 genres et 43 familles. Cette flore est dominée par les dicotylédones avec 72,4% des espèces. Les familles des Fabaceae et des Poaceae sont les plus représentées et renferment respectivement 24,1% et 15,9% des espèces de la flore. Les thérophytes sont largement dominantes avec 69,8% des espèces recensées, suivies des phanérophytes (13,2%), des hémicryptophytes (8,2%), des géophytes (5,6%), des chaméphytes (1,7%) et enfin des plantes parasites (0,9%). En ce qui concerne la répartition biogéographique, les espèces africaines et pantropicales sont majoritaires avec respectivement 40% et 25% de la flore. Cette étude préliminaire a permis de déterminer les spectres taxonomique, biologique et chorologique. Ces résultats sont utiles et constituent un préalable pour apprécier la nuisibilité des espèces adventices et pour proposer une méthode raisonnée de gestion des adventices du sorgho.

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“…The conventional surface survey method [30][31][32][33] was used for data collection. Within each block, 50 m × 50 m (0.25 ha) survey plots were installed every 200 m along 2 km north-south and east-west transects (Figure 3) to cover most of the floral and ecological diversity [34,35]. The plots, whose center coordinates were previously recorded, were located using the GARMIN 64S GPS.…”

Section: Stratified Samplingmentioning

confidence: 99%

Agricultural Land-Use Increases Floral Species Richness in Tropical Dry Forest and Savannah Ecosystems in West Africa

Akodewou

Godron

2022

Diversity

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The diversity and structure of plant communities are valuable indicators for assessing landscape quality. Land-use change is one of the main factors considered to affect and have the strongest impacts on biodiversity. In this study, we assessed the effects of the conversion of tropical dry forests and savannahs into agricultural lands on the floral diversity and the structure of the vegetation. For this purpose, we carried out vegetation surveys in 198 plots of 50 m x 50 m. Within each plot, we documented all herbaceous, shrubby, and tree species present. We calculated total, spatial, and local floral diversities by land-use types and characterized the structure of the plant communities. Our results show that the overall floral diversity of the study area remains quite high (483 species of vascular plants from 298 genera and 71 families) and was not strongly impacted by agricultural land use (Pareto inequality index is 23-77). Croplands had the highest spatial (9.4) and local diversities. There was no significant difference between the land-use types in terms of the native species richness while croplands harbored significantly the most alien species. Agricultural land use significantly affected the structure of the plant communities. Trees are very rare in croplands and are frequent in forests and savannahs. The clearing of Guinean dry forests and savannahs for cropping did not automatically lead to a loss of some aspects of ordinary floral diversity. For a better understanding of the effects of land-use change on biodiversity, it would then be more suitable to specify in the studies whether the species concerned are native, alien, generalist, or specialist.

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Caractérisation des formations végétales pâturées de la zone guinéenne du Togo : typologie, évaluation de la biomasse, diversité, valeur fourragère et régénération

Cited by 8 publications

References 17 publications

Floristic diversity and management of fodder resources of the natural pastures of the Savanna Highlands of Western Cameroon

Floristic diversity and management of fodder resources of the natural pastures of the Savanna Highlands of Western Cameroon

Flore adventice du sorgho (<i>Sorghum bicolor</i> [L.] Moench) en Haute Casamance, zone soudanienne du Sénégal

Agricultural Land-Use Increases Floral Species Richness in Tropical Dry Forest and Savannah Ecosystems in West Africa

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