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A seven-year study of large mammal populations in the Sahel, West Africa

The dry savannahs of the Sahelian vegetation zone house a remarkable community of large mammals that have been less studied than their counterparts in the eastern Africa. Here we examine some aspects of the ecology of a community of twenty different large mammal species in a savannah of Burkina Faso...

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Main Authors: Hema, E.M., Belemsobgo, U., Ouattara, Y., Tou, I.M., Sanou, Y., Karama, M., Fa, J.E., Luiselli, L.
Format: Journal Article
Language:Inglés
Published: Elsevier 2023
Subjects:
mammals
population
wildlife
demography
Online Access:https://hdl.handle.net/10568/135844
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author Hema, E.M.
Belemsobgo, U.
Ouattara, Y.
Tou, I.M.
Sanou, Y.
Karama, M.
Fa, J.E.
Luiselli, L.
author_browse Belemsobgo, U.
Fa, J.E.
Hema, E.M.
Karama, M.
Luiselli, L.
Ouattara, Y.
Sanou, Y.
Tou, I.M.
author_facet Hema, E.M.
Belemsobgo, U.
Ouattara, Y.
Tou, I.M.
Sanou, Y.
Karama, M.
Fa, J.E.
Luiselli, L.
author_sort Hema, E.M.
collection Repository of Agricultural Research Outputs (CGSpace)
description The dry savannahs of the Sahelian vegetation zone house a remarkable community of large mammals that have been less studied than their counterparts in the eastern Africa. Here we examine some aspects of the ecology of a community of twenty different large mammal species in a savannah of Burkina Faso, for a relatively long-term period (seven years). We observed remarkable interannual differences in terms of (i) number of contacts and (ii) their groups size (range of groups). Nonetheless, the calculated Kilometric Index of Abundance, with all species pooled, showed a relatively stable value of 0.88–1 individual per Km, apart in 2012 when it decreased to 0.7. GLM models on the observed number of contacts and group sizes revealed that there were significant effects of the species, but neither of the year nor of the season. Remarkable species-specific density fluctuations throughout time were observed when applying the DISTANCE methodology to the dataset. The sex ratio showed great fluctuations between the years and by species, even if there was a general predominance of females.
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language Inglés
publishDate 2023
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spelling CGSpace1358442025-10-26T13:02:06Z A seven-year study of large mammal populations in the Sahel, West Africa Hema, E.M. Belemsobgo, U. Ouattara, Y. Tou, I.M. Sanou, Y. Karama, M. Fa, J.E. Luiselli, L. mammals population wildlife demography The dry savannahs of the Sahelian vegetation zone house a remarkable community of large mammals that have been less studied than their counterparts in the eastern Africa. Here we examine some aspects of the ecology of a community of twenty different large mammal species in a savannah of Burkina Faso, for a relatively long-term period (seven years). We observed remarkable interannual differences in terms of (i) number of contacts and (ii) their groups size (range of groups). Nonetheless, the calculated Kilometric Index of Abundance, with all species pooled, showed a relatively stable value of 0.88–1 individual per Km, apart in 2012 when it decreased to 0.7. GLM models on the observed number of contacts and group sizes revealed that there were significant effects of the species, but neither of the year nor of the season. Remarkable species-specific density fluctuations throughout time were observed when applying the DISTANCE methodology to the dataset. The sex ratio showed great fluctuations between the years and by species, even if there was a general predominance of females. 2023-12 2023-12-22T10:08:32Z 2023-12-22T10:08:32Z Journal Article https://hdl.handle.net/10568/135844 en Limited Access Elsevier Hema, E.M., Belemsobgo, U., Ouattara, Y., Tou, I.M., Sanou, Y., Karama, M., Fa, J.E. and Luiselli, L., 2023. A seven-year study of large mammal populations in the Sahel, West Africa. Journal of Arid Environments, 219, 105078. https://doi.org/10.1016/j.jaridenv.2023.105078
spellingShingle mammals
population
wildlife
demography
Hema, E.M.
Belemsobgo, U.
Ouattara, Y.
Tou, I.M.
Sanou, Y.
Karama, M.
Fa, J.E.
Luiselli, L.
A seven-year study of large mammal populations in the Sahel, West Africa
title A seven-year study of large mammal populations in the Sahel, West Africa
title_full A seven-year study of large mammal populations in the Sahel, West Africa
title_fullStr A seven-year study of large mammal populations in the Sahel, West Africa
title_full_unstemmed A seven-year study of large mammal populations in the Sahel, West Africa
title_short A seven-year study of large mammal populations in the Sahel, West Africa
title_sort seven year study of large mammal populations in the sahel west africa
topic mammals
population
wildlife
demography
url https://hdl.handle.net/10568/135844
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