SAHELIAN INSELBERG VEGETATION IN BURKINA FASO ; VEGETACIÓN DE LOS INSELBERGS DEL SAHEL BURKINÉS ; LA VÉGÉTATION DES INSELBERGS DU SAHEL BURKINABÈ
In: BOIS & FORETS DES TROPIQUES; Vol. 325 (2015); 21-33 ; 1777-5760 ; 0006-579X, 2015
academicJournal
Zugriff:
Inselbergs are rocky outcrops charac- terised by the precarious nature of their edaphic and micro-climatic factors. The aim of this study was to compare the veg- etation on inselbergs with the vegetation in the surrounding plains. The data were collected from 900 m2 sampling plots in the woody stratum and 100 m2 plots in the herbaceous stratum, by means of random stratified sampling. We conducted a total of 162 surveys, from which we identified 228 plant species belonging to 43 families and 144 genera. On the inselbergs, identi- fied 184 species in 36 families and 136 genera. Cynanchum hastifolium was the only species identified as strictly endemic to the inselbergs. In the surrounding envi- ronment, the flora comprises 194 species belonging to 40 families and 127 genera. The average number of species identified per survey was higher in the areas sur- rounding the inselbergs (23.53 ± 6.28) than on the inselbergs themselves (19.93± 4.83). The vegetation on the inselbergs (719.47 ± 337.27 plants/ha) is not as dense as in the surrounding environment (1,389.91 ± 674.79 plants/ha). Given the more pronounced human impacts in the surrounding plains and the relic species and dominant Pterocarpus lucens on the inselbergs, these appear to have become a refuge habitat for certain plant species. The difference between the vegetation on the inselbergs and in the surrounding en- vironment is linked to both edaphic and anthropic factors. ; Los inselbergs son afloramientos roco- sos caracterizados por la precariedad de sus factores edáficos y microclimáticos. El objetivo de este estudio es realizar un estudio comparativo entre la vegetación de los inselbergs y la de los ambientes circundantes. Se recopilaron los datos en parcelas de 900 m2 para el estrato leñoso y de 100m2 para el estrato herbáceo si- guiendo un muestreo estratificado y alea- torio. Se realizaron 162 inventarios de ve- getación. El estudio permitió inventariar 228 especies vegetales repartidas en 43 familias y 144 géneros. En los inselbergs, se catalogaron 184 ...
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SAHELIAN INSELBERG VEGETATION IN BURKINA FASO ; VEGETACIÓN DE LOS INSELBERGS DEL SAHEL BURKINÉS ; LA VÉGÉTATION DES INSELBERGS DU SAHEL BURKINABÈ
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Autor/in / Beteiligte Person: | Tindano, Elycée ; Ganaba, Souleymane ; Sambare, Oumarou ; Thiombiano, Adjima |
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Zeitschrift: | BOIS & FORETS DES TROPIQUES; Vol. 325 (2015); 21-33 ; 1777-5760 ; 0006-579X, 2015 |
Veröffentlichung: | Cirad, 2015 |
Medientyp: | academicJournal |
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