Importance écologique des facteurs édaphiques dans la répartition spatiale de quelques Rongeurs au Sénégal

Hubert, Bernard; Leprun, Jean-Claude; Poulet, Alain

doi:10.1515/mamm.1977.41.1.35

Cited by 7 publications

(7 citation statements)

References 1 publication

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“…When studies have been made of mammal distributions in complex rain forests, they also have concentrated on vertical stratification (Adam 1977, Emmons 1980, Harrison 1962, Lim etal. 1977, MacKinnon 1978, Muul & Lim 1970 or comparisons of overall forest type (Bourliere 1973, Emmons & Gentry 1983, Harrison 1957, Hubert et al 1977, Medway 1972, Payne 1980, Stevens 1968). Although many investigators have mentioned the possible relationships between habitat features of complex forest and small mammals, few have demonstrated clear associations with specific variables (Barnett et al 1978, Braithwaite et al 1983, Delany 1971, Suckling & Heislers 1978, Wood 1971.…”

Section: Introductionmentioning

confidence: 99%

Small mammals and habitat structure in lowland rain forest of Peninsular Malaysia

Kemper

Bell

1985

J. Trop. Ecol.

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A method of assessing rain forest structure by ranking relative abundance of 41 habitat variables was used to describe habitat differences among six trapping sites (324 subsites). Variables included aspects of all vegetation layers but concentrated on those considered to be important to small mammal distribution. Ordination and classification methods resulted in similar analyses of the data. Differences in habitat structure were primarily related to the moisture conditions of the trapping sites and secondarily to their successional age (regenerating versus primary forest). The most important habitat variables for differentiating between sites were LITTER, CLEARING, SOILS, PIG DAMAGE, FLOODING, FAN PALM, EMERGENTS, CANOPY SURFACE and SEEDLINGS. Habitat structure also varied within sites with some suggestion of small-scale patterning.Small mammal captures were more likely in drier sites and subsites, but there was no difference in trap success between regenerating sites and primary forest sites. Greater numbers of species were captured in sites containing a variety of habitats, a discrete layering of vegetation and an extensive understorey. Small mammal captures were positively associated with five habitat variables (EMERGENTS, LITTER, ROTTING LOGS, SEEDLINGS, ROUGH BARK) and negatively associated with five others (LAYERS, BERTAM, SEDGES, PIG DAMAGE, FLOODING). The destruction caused by pigs is thought to be a major factor since it reduces litter and food availability over wide areas. Leopoldamys sabanus was the most abundant small mammal captured (40/68 individuals) and trap success differences among sites (0.4–1.9%) reflect its preference for higher, well-drained habitats.The study demonstrates the usefulness of a simple method of ranking habitat features according to importance/abundance thus eliminating the all but impossible task of direct measurements in this complex system. This simple method of habitat description provides a basis for studying variables influencing faunal distribution patterns.

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Section: Introductionmentioning

confidence: 99%

Small mammals and habitat structure in lowland rain forest of Peninsular Malaysia

Kemper

Bell

1985

J. Trop. Ecol.

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“…andBalde et al (1390) deal with rodents as disease vectors in Guinea Zech (1980). has studied their impact on plants of economic importance.There is as yet no work in Guinea on the factors influencing rodent diversity to compare with the edaphic analyses ofHubert et al ( 1977) and Emmons (1 984), those of Adam ( 1977) on vegetation complexity and within-habitat stratification of rodents, or of the effects of seasonal variations in trappability (e.g.…”

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confidence: 99%

Mammalogy in the Republic of Guinea: an overview of research from 1946 to 1996, a preliminary check‐list and a summary of research recommendations for the future

Barnett

Prangley

1997

Mammal Review

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“…Depuis août 1976, deux zones voisines ont été soumises à un piégeage régulier, tous les mois ou tous les deux mois, par mar quage-recap ture, à l'aide d'une grille de pièges métalliques, du type « Manufrance », placés tous les 10 m sur l'ensemble de la sur face : il s'agit du quadrat «Alimentation » (QA) d'une surface de 2,5 ha et du quadrat témoin ou « Contrôle » (QC) de 4 ha ; ces deux zones sont situées dans le secteur de la forêt qui a fait l'objet d'une coupe en 1973 ; le QC correspond grossièrement à la zone appelée « qua drat forêt » dans un travail antérieur (Hubert, 1977) .…”

Section: Methodesunclassified

“…C'est dans cette région boisée que se situent les deux surfaces qui font l'obj et de cette étude comparée. La description détaillée du milieu physique a été donnée dans Hubert (1977) et Hubert, Leprun et Poulet (1977) ; nous rappelle rons ici brièvement que le climat est caractérisé par une longue saison sèche (de novembre à juin) et par une brève et unique saison des pluies de juillet à octobre ; les précipitations sont varia bles d'une année sur l'autre, aussi bien pour les quantités que pour la répartition (fig. 1), bien que la région soit traversée par l'isohyète de 550 mm.…”

Section: Le Milieuunclassified

Les conséquences d’un supplément alimentaire sur la dynamique des populations de rongeurs au Sénégal. I. Le cas de Mastomys erythroleucus en zone sahélo-soudanienne

Hubert¹,

Couturier²,

Poulet³

et al. 1981

revec

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The Mastomys erythroleucus population of a sahelo-sudanian woodland has been studied from August 1976 to October 1979 on two quadrats : a control quadrat (QC) 2.5 ha in size, and a provisioned quadrat (QA) 4 ha in size, where food pellets were regurlarly provided twice a week since September 1976 (yearly food supplement : 120 kg/ha/yr). The following changes were observed on the provisioned quadrat : (1) an increased population density, (2) an increased production of young, and (3) an improvement of their survival rate. Two further changes were also noticed : (4) while the number of immigrants was not significantly different on the two quadrats during the experiment, the duration of their stay was greater on the provisioned area than on the control area, and (5) the size of the resident females home ranges was decreased. Whereas the experimental increase in food availability and predictibility triggered in this case an increase in Mastomys erythroleucus population density through a better recruitment, it was not influential in preventing the population decline which took place at a similar rate on both quadrats in 1977.

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Importance écologique des facteurs édaphiques dans la répartition spatiale de quelques Rongeurs au Sénégal

Cited by 7 publications

References 1 publication

Small mammals and habitat structure in lowland rain forest of Peninsular Malaysia

Small mammals and habitat structure in lowland rain forest of Peninsular Malaysia

Mammalogy in the Republic of Guinea: an overview of research from 1946 to 1996, a preliminary check‐list and a summary of research recommendations for the future

Les conséquences d’un supplément alimentaire sur la dynamique des populations de rongeurs au Sénégal. I. Le cas de Mastomys erythroleucus en zone sahélo-soudanienne

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