Emmanuel Midibahaye HEMAUniversity of Ouagadougou | UO · Laboratoire de Biologie et Ecologie Animales
Emmanuel Midibahaye HEMA
PhD
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60
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Citations since 2017
Publications
Publications (60)
We provide an updated and annotated check-list of Burkina Faso birds. This compilation takes into account our field research (2003, 2010, 2011 and 2012), museum specimens, and a thorough bibliographic search providing references to all the original records for each taxa. We clearly define criteria for acceptance in the checklist and discuss dubious...
en The waterbuck (Kobus ellipsiprymnus), though widespread throughout Africa, is suspected to be declining overall. Data on population numbers and structure are lacking for many parts of its range, especially in West Africa, where the subspecies defassa is found. The aim of the present study was to evaluate the abundance, distribution and attribute...
Face-to-face interviews with local populations are often used to determine the distribution and population trends of elusive threatened species. Although interviewee responses may suffer from some bias, historical trends in the status of a species can be investigated from age-structured questionnaires. In this paper, we tested this idea by analysin...
We related the fi rst commented list of the amphibian species of Burkina Faso. To obtain contemporary data, we investigated six sites from July 2017 to September 2018. Th e survey is unique for West
Africa in combining a variety of diff erent habitat types, e.g. Sahelian areas, grassland and woodland savannahs, fl oodplains, gallery forests and agr...
Centrochelys sulcata, the African Spurred Tortoise (Family Testudinidae) is one of the largest terrestrial chelonians in the world, the largest extant continental tortoise, and the largest tortoise in Africa. Males are larger than females, and may exceed 100 kg in body mass, with a straight carapace length of up to 86.0 cm in males and 57.8 cm in f...
Understanding large- and small-scale patterns as well as the determinants of species richness is central for the study of evolutionary mechanisms. The extent to which species richness in local communities is related to larger scale processes is a pre-eminent topic in ecological and evolutionary research. To investigate how local and regional specie...
The status of most vertebrates in the African Sahel is not well known. Among these, the African spurred tortoise (Centrochelys sulcata), a charismatic but also one of most threatened vertebrates in the Sahel, is still poorly studied. We investigated the status of this species, its potential distribution, habitat selection (at multiple spatial scale...
Adult sex ratios and age structures are important wildlife population parameters, but they have been poorly investigated in ungulate species in West African savannahs. We used line transects to investigate these parameters in 11 ungulates from a protected area in south-western Burkina Faso during the period 2010-2018. We created an empirical model...
Human-Elephant Conflict (HEC) represents a serious threat to both survival of wild elephants and human economic activities at the local level in many African regions, but has been relatively little investigated in West Africa. Here, the ecological correlates of HEC and correlation between HEC and elephant poaching, are investigated in the PONASI co...
Présents dans la forêt depuis 2011, les éléphants ont entrainé un grand changement dans le quotidien des producteurs autours de la forêt classée de Niangoloko (FCN). Les pertes des cultures de plus en plus croissantes ont entrainé une interaction négative entre les Hommes et les éléphants. Afin d’identifier d’une part, les corrélats écologiques qui...
Publication date 31/03/2020, http://m.elewa.org/Journals/about-japs/ 1 RESUME L'évaluation des valeurs fauniques d'une aire protégée est fondamentale pour sa gestion rationnelle. Dans cette étude, l'abondance et la distribution de la faune mammalienne dans la Réserve de Biosphère Transfrontalière du W Niger (RBT W Niger) a été apprécié après quatre...
To better understand the habitat preferences of the African spurred tortoise (Centrochelys sulcata), we tested possible associations between their distribution and land use, vegetation cover, the presence of roads, human settlements, and rainfall patterns, all of which affect the distributions of other tortoise species. African spurred tortoise dis...
Actuarial senescence appears to be a common process, and senescence patterns are highly variable across the tree of life. To date, studies on animal senescence have largely focused on model species, such as as fruit flies, humans and a few other endotherms. In contrast, our knowledge about ageing remains fragmentary in ectotherm vertebrates, such a...
The dearth of ecological data from protected areas at relevant scales challenges conservation practice in West Africa. We conducted the first camera survey for Burkina Faso and Niger to elucidate interactions between resource users and mammals in the largest protected area complex in West Africa (W‐Arly‐Pendjari, WAP). We differentiated direct (e.g...
Apparent density (determined as Kilometric Index of Abundance [KIA], by direct sightings and by droppings along line-transects) and habitat use of some species of carnivore mammals were studied in two protected areas of Burkina Faso (Comoé-Leraba and Nazinga). Despite the dataset was collected throughout several years and with a very high field eff...
Understanding age-dependent mortality processes is a critical challenge for population biologists. Actuarial senescence appears to be a common process across the tree of life. Senescence patterns are highly variable in pluricellular organisms: senescence can be gradual or sharp and its onset may be early or delayed. By contrast, studies revealed th...
The meat of wild animals (bushmeat) is consumed extensively in many tropical regions. Over the past few decades bushmeat consumption has greatly increased, threatening the survival of some hunted species and the supply of animal protein to countless numbers of people. Understanding patterns of bushmeat consumption is thus vital to ensure the sustai...
No field studies have been conducted characterizing the habitat characteristics and eventual spatial resource partitioning between softshell turtles (family Trionychidae) in West and Central Africa. Here, we analyze the macrohabitat, microhabitat (along four variables), and apparent population abundance of Nile Soft-shelled Terrapin (Trionyx triung...
In large Sub-Saharan African cities bushmeat consumption is a major threat to many species. These sizeable urban populations generate an unprecedented demand for bushmeat. The study of the effect of age, sex and geographic location in bushmeat eating in African cities may offer valuable insights on which population groups to target in behaviour cha...
Effets de la densité des compétiteurs et du régime des pluies sur la dynamique de population à long terme d’une communauté d’herbivores dans une savane ouest-africaine
En dépit de beaucoup d ’ articles scientifiques consacrés à l’écologie des communautés des ongulés dans les savanes africaine, seules quelques études se sont focalisées sur l’Afrique...
In large Sub-Saharan African cities bushmeat consumption is a major threat to many species. These sizeable urban populations generate an unprecedented demand for bushmeat. The study of the effect of age, sex and geographic location in bushmeat eating in African cities may offer valuable insights on which population groups to target in behaviour cha...
The vulture populations in West Africa are undergoing dramatic decline over the last 30 years. Their particular ecology and sociality makes them vulnerable to various risks, including environmental changes, poisoning and bioaccumulation of toxic substances from agricultural products, pesticides, and veterinary drugs used in cattle livestock. In add...
In this paper, the results of the first density investigations (via DISTANCE methodology on line transect surveys) for the threatened African spurred tortoise Centrochelys sulcata from West African Sahel (Niger and Burkina Faso) are reported. Spurred tortoises were encountered in 51.8% of Burkina Faso transects (n = 27) and in 60.7% of Niger transe...
Incursion ou non ? Étude des corrélations écologiques du conflit Homme-Éléphant dans le Ranch de Gibier de Nazinga (Burkina Faso)
Le phénomène de conflit Homme-Éléphant constitue une préoccupation majeure dans de nombreux pays en voie de développement. Cependant, on ne dispose que de peu d’informations sur sa dynamique dans les pays de l’Afrique de...
In West Africa, whether in forests or savannahs, most of the large mammal species have a scattered spatial distribution. Monitoring their population size represents a logistic, financial, theoretical challenge because we counting transects are not appropriate, unlike elsewhere in Africa. In this paper, we (1) analyse the patterns of interannual (20...
The African Spurred Tortoise (Centrochelys sulcata), the second largest tortoise species in the world, is threatened with extinction because of a variety of threats, including habitat loss. Because details of habitat use for this species have not been published for wild populations of this species, we conducted this study to qualify and quantify ha...
Few studies are available on the population dynamics of medium and large mammals in gallery forests of the Sudan and Sahel regions of West Africa. Line-transect studies of the abundance (estimated by KIA) of nine species of ungulates and three species of primates were carried out between 2004 and 2013 in the Comoé-Leraba protected area of Burkina F...
1. An age and sex structure study of the West African savannah elephant (Loxodonta africana africana) population of the Nazinga Game ranch (Burkina Faso) was carried out using direct sightings of individuals near water points where they group during hot periods of the day, and droppings circumference measurements of dung pile along line transects,...
In order to explore the bushmeat trade patterns in the Sahel, we carried out a multidisciplinary study focusing on Burkina Faso. We conducted baseline interview surveys in order to understand the variation of the perception of people towards bushmeat in relation to their place (urban versus rural), gender and age. In addition, the long-term populat...
African elephants (Loxodonta africana) are ecosystem engineers in African savannahs, but their role in the modifications of the populations of trees by means of their browsing activities has been poorly studied so far in West Africa. We studied the disturbance of elephants to eight selected species of trees in the Nazinga Game Ranch (Burkina Faso),...
Knowledge of juvenile dispersal is important for understanding population dynamics and for effective conservation, particularly of geographically isolated raptor populations. Here, we report the first documented case of a long-distance movement of an Egyptian Vulture Neophron percnopterus from the French population to Sicily. This observation opens...
The African spurred tortoise (Centrochelys sulcata) is the second largest terrestrial turtle in the world, with a scattered distribution across the Sahel, in West Africa. This species is seriously threatened and declining consistently throughout the range, but little is kown on the causes of its decline. It has been hypothesized that this tortoise...
The African spurred tortoise (Centrochelys sulcata) is a threatened species,
especially in West Africa, where it shows a scattered distribution. In Burkina Faso, the species
distribution is unknown and we documented the current distribution and potential habitat
characteristics. We found evidence of the species in a few sites in the northern and ea...
A report synthesizing the findings of a 3-year initiative (2003-6) to better understand:
• the current size, composition and status of the elephant population
• the ecological requirements of the elephants
• patterns of human activity and their influence on the human-elephant relationship/elephant livelihoods
• the location and severity of threats,...
The ecology of West African arid savannah snakes is still poorly
known, especially in regard to the fossorial species. Here, field data
on distribution, morphometrics, habitat use and diet are reported
for the sand boa Eryx muelleri (Erycidae) from three different
countries, i.e. Burkina Faso, Togo and Nigeria. This snake was
observed in 21 distinc...
Crop raiding by elephants continues to increase as human populations in elephant ranges expand. The risk of crop losses can be reduced by identifying the most important farm land features that attract elephants. Risk factors vary from place to place and must be identified by site-specific studies. The most important risk factors include distance of...
Statistical power is the key issue when evaluating wildlife trends. Wildlife managers in West Africa lack light
aeroplanes and must often estimate wildlife trends on foot, either by counting the animals themselves or by
counting their dung. We compared direct ground counts of elephants and dung counts in two consecutive years
in Nazinga Game Ranch...
Elephant wet and dry season distributions were compared at Nazinga Game Ranch in southern Burkina Faso. Dropping counts along line transects provided an index of occupancy at the end of each season: wet 2006, dry 2007 and dry 2008. We expected that the distribution of elephants would differ between the dry and the wet seasons, with elephants concen...
We tested the hypothesis that elephant distribution inside the Nazinga Game Ranch (Southern Burkina Faso) during the wet season is influenced by villages outside, while in the dry season elephants are restricted only by water. Occupancy was evaluated by recording elephant dung-piles on 54 line transects in each of three seasons: wet 2006, dry 2007...
Elephant wet and dry season distributions were compared at Nazinga Game Ranch in southern Burkina Faso.
Dropping counts along line transects provided an index of occupancy at the end of each season: wet 2006,
dry 2007 and dry 2008. We expected that the distribution of elephants would differ between the dry and the
wet seasons, with elephants con...
The efficiency of meandering transects—in terms of accuracy, precision and effort required for estimating elephant abundance—was evaluated in the Kakum Conservation Area in Ghana. Four consecutive elephant dung surveys were carried out between February 2000 and February 2002 using meandering transects. The resulting dung density estimates were adju...
Crop raiding by elephants is becoming a serious management problem around many protected areas in West Africa as forests shrink and human populations expand. We describe a case study of the Kakum Conservation Area in Ghana's forest zone. We monitored 203 farms to explain why some suffered huge losses from elephants while close neighbours remained u...
The Kakum Conservation Area appears to be Ghana's most successful national park, with 60,000 visitors each year and its role in boosting the economy of Cape Coast, the regional capital. But to the local farming community, the park is not a blessing. Marauding elephants damage their crops, making the local community hostile towards the park and towa...
A dry-season dung count was carried out in January 2001 at the Ankasa Conservation Area in south-western
Ghana to estimate the elephant population. After a reconnaissance, the study area was stratified into three
strata of density: high, medium and low. But a better design was to arrange a high-density stratum along the
Suhien River, on which 43 du...
Projects
Projects (10)
LEK (Local Ecological Knowledge) is crucial for understanding patterns and trajectories of conservation biology issues in tropical regions, including, for instance, the bushmeat trade, the survival or extinction trajectories of threatened species, the extent and directions of human-wildlife conflicts, etc. In this project, funded by various external donors throughout the years, we use face-to-face interviews with local persons/communities as a way to record crucial data for the benefit of conservation in some African and Asian countries.