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Article

Vehicular Livestock Mobility in West Africa: Seasonal Traffic Flows of Cattle, Sheep, and Goats across Bamako

by
Louis Amprako
1,
Hanna Karg
1,2,
Regina Roessler
3,
Jennifer Provost
3,
Edmund Kyei Akoto-Danso
1,
Seydou Sidibe
4 and
Andreas Buerkert
1,*
1
Organic Plant Production and Agroecosystems Research in the Tropics and Subtropics (OPATS), University of Kassel, Steinstrasse 19, D-37213 Witzenhausen, Germany
2
Institute of Environmental Social Sciences and Geography, University of Freiburg, Physical Geography, Schreiberstraße 20, D-79085 Freiburg, Germany
3
Animal Husbandry in the Tropics and Subtropics, University of Kassel, Steinstrasse 19, D-37213 Witzenhausen, Germany
4
Institut d’Economie Rurale (IER), Bamako, Mali
*
Author to whom correspondence should be addressed.
Sustainability 2021, 13(1), 171; https://doi.org/10.3390/su13010171
Submission received: 23 November 2020 / Revised: 21 December 2020 / Accepted: 22 December 2020 / Published: 26 December 2020
(This article belongs to the Section Resources and Sustainable Utilization)
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Abstract

:
Mali is a major livestock producing country in West Africa. However, in recent years, the sector has faced multiple challenges like farmer-herder conflicts, overuse of grazing and water resources, and the effects of climate change. Meanwhile, traditional livestock systems are becoming less important given the increased availability of vehicular transport for regional and international animal trade as well as new opportunities for more specialised urban and peri-urban production systems. To assess the role of Mali’s capital city Bamako for livestock consumption and trade, this study examined the scale of livestock movement in the city, comprising influxes, outfluxes, and transits. To this end, flows of cattle, small ruminants, and livestock feed were recorded through road surveys covering three different seasons. The results showed the role of Bamako as a major trade hub in the distribution of ruminants. While traffic of cattle and sheep was regional, movement of goats was smaller and more localised. Religious festivals were an important driver of livestock traffic, both in terms of the numbers of livestock and the distance covered. This study highlights the role of cities for livestock mobility and contributes to a better understanding of challenges related to urban livestock production and trade and its requirements for better livestock management.

1. Introduction

The West African Sahel is a semi-arid region located between the Sahara and the humid Savannah region. It is particularly vulnerable to food insecurity. Crop production in this region is severely limited by low soil fertility and aridity, and therefore, pastoralism is a popular feature of the Sahelian agriculture, contributing to food supply and income generation [1]. The risk of food insecurity in the Sahel is further exacerbated by rapid population growth [2]. Over millennia, Sahelian pastoralists have coevolved with their environment, migrating at the onset of the rainy season along fixed feeding corridors with their livestock to vast grasslands of the north and returning at its end to the south [3]. Together, transhumance and other types of livestock production provide about 20% of the caloric requirements of the Sahelian population [4], contribute up to 15% to the Gross Domestic Product (GDP), and provide income to over 40 million Sahelians [5]. Apart from its economic and nutritional contribution, livestock is also important for religious and cultural celebrations [4]. Livestock trade points have been established to facilitate livestock flows within the Sahel and across West Africa [6].
Mali is a major exporter of livestock throughout the Sahel region [7,8] and livestock trade contributes about 19% of the country’s GDP [9]. For the last decade, livestock production and trade has been threatened by violent conflicts [10]. In 2012, an uprising, involving Tuaregs, jihadists, and the government forces of Mali, led to a political coup, which triggered security interventions within the country and the entire Sahel region [10]. This affected the mobility of herders and their livestock, a constraint which will likely remain for years to come [11]. Another security concern are simmering tensions and sporadic attacks between the Fulani livestock herders and the Bambara and Dogon crop farmers over the use of the increasingly scarce land and water resources [12]. These conflicts over resources have been fueled by national policies favouring the development of crop farming over pastoralism since the country’s independence [13] and the weak implementation of collective land use rights for pastoralists in the absence of land titles [14].
Currently, livestock trade in Mali mostly consists of live animals that are trekked to cities or large livestock markets, either for local consumption or for further export to coastal countries [15]. However, the limited access to grazing and water sources and the insecurity hindering livestock mobility have contributed to an expansion of vehicular long-distance transportation of live animals. Furthermore, traditional livestock farming systems are undergoing a gradual shift to more intensive sedentary livestock systems and to more specialised to milk or meat [16], partly monetarised economic systems [17]. Increasingly, such specialised livestock production systems prevail in and around larger cities and heavily rely on livestock feed from rural areas [16]. This evolution of traditional livestock production into specialised livestock systems focused on demand of urban areas stimulates livestock trading and as a result, urban centres in Africa are progressively becoming important trade hubs [18] while also playing an important role in urban livestock rearing [19]. For instance, Bamako harbours the largest livestock markets in the country and attracts large numbers of livestock for urban consumption and trade [20]. It is likely that due to the increasing demand for livestock products in urban areas across the region, the scale of livestock movements in cities of the Sahel will increase in terms of numbers as well as distance covered.
Information on the current scale of vehicular livestock movements into West African urban centres remains scarce despite its relevance towards the associated pressure on natural resources and the essential facilities that are needed to accommodate increasing numbers of animals in rapidly growing urban centres. To contribute to filling this research gap, this study examined overall vehicular livestock movements for (1) urban consumption, (2) redistribution, and (3) transits in Bamako during three different seasons. A particular focus was placed on the quantitative assessment of livestock flows and feed entering, leaving, and passing through the city whereby we recorded their geographical origin and destination.

2. Materials and Methods

2.1. Study Site Description

Following the Koeppen classification [21] the main cattle production areas of Mali are characterised by a hot desert climate whereby towns like Kidal, Gao, and Timbuktu are hottest during the dry season while rainfall increases southwards, comprising cities like Mopti, Ségou, and Bamako. The latter has a tropical savanna climate with a mean maximum temperature of 35 °C, a mean minimum temperature of 21 °C, and an annual rainfall of 991 mm [22]. At a population of 2.6 million, Bamako has one of Africa’s fastest growth rates [23,24]. Due to its geographical location and its national relevance as Mali’s capital, Bamako serves as a central trade hub for goods traded both within the country and in the sub-region. Therefore, we chose this city as a suitable study site to collect data on vehicular livestock mobility and to analyse influxes, outfluxes, and transits within the region.

2.2. Methods

2.2.1. Collection of Primary Data on Flows of Livestock and Livestock Feed

From 11/2015 to 8/2017 information on the movement of cattle, sheep, and goats as well as the flows of livestock feed into the city was recorded on all major and minor access roads to the city of Bamako (Figure 1). Given the strong seasonality of livestock movements and livestock feed transports, the surveys were carried out in three different seasons representing the hot dry season, the rainy season, and the harvest season.
Mali’s hot season stretches from March to June, and is characterised by monthly average temperatures of up to 37 °C and negligible precipitation [25], making it a critical period for food security due to its associated water scarcity which severely restricts crop and animal production. The rainy season begins in June/July and lasts until October/November with an average daily high temperature of 32 °C and about 260 mm of rainfall [25]. This period is suitable for the cultivation of crops for food and is characterised by the availability of grazing areas and adequate water supply for livestock. Finally, the harvest season which lasts from November to around January is characterised by widespread food availability for humans and of southern pasture and crop residues for livestock.
In each season, incoming and outgoing livestock and feed flows were recorded during one week per season for 24 h on major roads and 12 h per day (daytime only) on minor roads. Enumerators were trained to take records using a standardised survey form, including date/time, vehicle type, and identification number as well as specific information on type and quantity of incoming and outgoing cattle, sheep and goats, as well as livestock feed, geographical source, and destination of livestock and livestock feed. For the latter, highly processed livestock feed such as concentrates, and salt licks were excluded. Livestock numbers were estimated based on the information provided by drivers and from the enumerator’s visual inspection (Table 1). Due to the size variability of units (transported mainly in bundles) used in livestock feed collection, it was not possible to estimate the quantity in terms of weight of livestock feed flows and for this reason a measure of frequency was used.
Two enumerators were responsible for each road, with one on either side of the traffic. The point of data collection was at an official checkpoint on each of the major roads and three of the minor roads; in the case of the remaining minor road the data collection was at a strategically located point where vehicles would stop or slow down. At the official check points of the police, the gendarmerie, the water and forestry commission, the phytosanitary commission and the veterinary service, vehicles must stop for document inspection or payment of fees. This short stop offered enumerators the possibility to acquire information from the drivers about their cargo. We considered bicycles, tricycles, motorbikes, private and commercial cars including trucks, tractors, (mini-)buses, and trucks as modes of transportation. Surveys were conducted in the harvest season from 16.–22.11.2015, hot season from 02.–09.05.2016 and rainy season from 25.–31.08.2017.

2.2.2. Data Processing and Analysis

Data were entered into a PostgreSQL database, thereby linking geographical sources and destinations to georeferenced locations. When the precise number of animals was not recorded, processing included assigning a specific livestock count to each of the transportation units based on field research and expert knowledge. After cleaning and processing the data, records were grouped into:
  • Incoming flows (livestock and livestock feed coming from outside the city into the city),
  • Outgoing flows (livestock moving from within the city for a destination outside the city), and
  • Transiting flows (livestock coming from outside the city, passing through the city for a destination outside the city).
Livestock flows for each season and for each livestock were calculated to determine the scale of livestock movement. The spatial analysis used the season- and livestock-specific records with georeferenced information on source and destination. First, the main geographical source areas per season were plotted for each livestock type. Second, the incoming, outgoing, and transiting livestock flows were displayed on a map with the line thickness linking source and destination proportional to the livestock numbers. Sources of livestock feed were also plotted on a map. For these sources, we considered the number of records (counts) rather than overall quantities due to the aforementioned reasons.
Urban consumption was estimated as the difference of incoming livestock and outgoing livestock flows. Volumes of outgoing livestock flows indicated livestock trade between Bamako and other destinations, and thus, the city’s role as a trade hub.

2.2.3. Limitations of the Study

The study relied on information provided by vehicle drivers or their assistants. When respondents were reluctant to provide the required information or when vehicles did not stop, we were unable to obtain information about their destination or source location. In these cases, the number of livestock or cargo space was estimated. Across the seasons, 27%, 42%, and 34% of the recorded cattle, goats, and sheep transports, respectively, did not yield information on geographical source and destination and could therefore not be used in the spatial analysis. Additionally, we only recorded livestock movements on the road, and thus have missed livestock that was trekked and thereby bypassing the road. Uncertainties regarding the local consumption of livestock arose where livestock entered Bamako for later export, or where influxes occurred before our rather short survey periods.

3. Results & Discussion

3.1. Scale, Seasonality, and Sources of Livestock Flows

Throughout the three seasons, we recorded a daily average (±SD) of 873 ± 131 cattle, 6019 ± 1633 sheep, and 210 ± 44 goats on Bamako’s roads including records without location data (detailed information in Appendix A). Of all recorded livestock, vehicle transported livestock was 98% and trekked livestock was 2%. Most cattle recorded on the roads were transported in trucks (91%), and only 9% were conveyed in other transportation vehicles like tricycle vans. Sheep were also mainly transported on trucks (57%), followed by public minibus tops (22%), and bus tops (8%). Goats were mainly transported by minibuses (56%), one third transported in trucks, and the remainder by motorbikes.
For all livestock types, the number of incoming animals exceeded the number of outgoing animals by far, underlining Bamako’s role as an urban consumption hub (Figure 2a–c). The difference was particularly marked in the movement of cattle, with the incoming numbers exceeding the outgoing by up to 24 times throughout the rainy season. For the hot and harvest season, they exceeded by 14 and 19 times, respectively (Figure 2a). For sheep, we recorded 7 to 11 times more incoming than outgoing numbers (Figure 2b), and 2 to 6 times more goats were entering than leaving the city (Figure 2c).
Sheep influxes were highest, with about 8,000 animals entering the city daily in the rainy season, 1000 animals in the hot season, and 800 in the harvest season (Figure 2b). It is important to note that the actual numbers were higher, considering that 15–37% of the records did not contain data on geographical source and destination. The higher sheep influxes during the rainy season were clearly linked to the rainy season’s coincidence with the Eid al Adha celebration. This religious festivity calls for the slaughtering and eating of livestock, typically a ram, by each Muslim household. Slaughtering of sheep and the consumption of mutton during religious and cultural festivals like Eid al Adha, baptisms, and weddings increase meat consumption [26], meat price, and livestock price, making them lucrative for traders [27]. Like incoming sheep, the highest number of outgoing and transiting sheep was recorded during the rainy season when more than 800 sheep left the city per day, compared to about 100 sheep in the hot and harvest season. Likewise, more than 900 sheep per day were on transit in the rainy season versus 140 in the hot and 130 in the harvest season.
In the rainy season, we recorded higher daily numbers of incoming cattle than in the other two seasons (Figure 2a). Accordingly, the cattle numbers entering the city during this season amounted to 770 animals per day, compared to 380 and 260 cattle in the hot and harvest season, respectively. Again, 3–33% of all records did not contain spatial information and cattle numbers were higher. Williams [7] and Provost [28] confirmed higher livestock numbers and market prices for livestock during the rainy season. Apart from religious festivals that stimulate livestock trade, the increased trade of cattle may also be related to the commencement of the academic year in September, when the need to pay school fees is an important factor for the sale of livestock in Africa [29]. As already indicated, the proportion of outbound cattle was small in comparison with those incoming, and so were the absolute numbers, even when including those records without spatial information: only 13–32 cattle left the city daily, with the highest number in the rainy season. The daily number of cattle passing through the city was highest in the hot season (>200 cattle) and lowest in the rainy season (86 cattle).
Compared to cattle and sheep, the movement of goats played a minor role, with only slightly over 100 animals entering the city per day across the seasons (17–52% without spatial information). Possibly, goats were rather produced in private homes for consumption than imported from distant areas. The number of goats leaving the city for other destinations was similar to the number of outgoing cattle. Like cattle, the number of goats passing through the city was highest in the hot season and lowest in the rainy season (Figure 2c).

3.2. Direction of Livestock and Feed Flows

3.2.1. Incoming Livestock Flows

The main geographical sources for cattle entering Bamako throughout the three seasons were Ségou (21%) and Mopti (16%) as well as the city’s surroundings within 50 km (6%; Figure 3 and Figure 4). The southern part of the country around Sikasso was an additional source of cattle (3%) which was particularly evident in the rainy season (Figure 3). Sheep were mainly from Bamako’s northern surroundings up to the Mauritanian border (23%), whereas Mopti (9%) and Ségou (4%) were less important sources for sheep entering Bamako (Figure 3 and Figure 4). Mauritania is an important livestock producing country in West Africa and between 2015 and 2017, a cumulative total of 81 million livestock were produced by Mali and Mauritania together with the latter contributing 40% of the total headcount [30].
Irrespective of the season, goats did not cover large distances but came mainly from Bamako’s surroundings (25%) and Ségou (13%). A plausible explanation for this could be the browsing nature of goats compared to the grazing nature of sheep [31] and the suitability of rearing goats close to the homestead. This would also explain the fewer goats recorded on the road as compared with sheep, despite the goat population in Mali for 2017 being 24 million, that is about 28% more than the population of sheep for that year [30].
The importance of Ségou, Mopti, and to a lesser extent Sikasso for livestock trade can be explained by their high number of livestock markets, allowing livestock aggregation and movement [15]. Ségou’s role also reflects its major road connection to Bamako, making it a reliable trade corridor. Additionally, the city is in a region of Mali with large irrigation schemes making crop residues a readily available feed resource for livestock in an otherwise semi-arid region [32]. Mopti is a dominant source of cattle because of its large grazing areas which also make it a popular route for transhumance [33]. Large grazing areas are promoted by the hydrology of Mopti, with the presence of the Niger and the Bani rivers as well as the many connecting lakes which provide drinking water to the livestock herds during the dry season [34]. Aside from the large grazing areas, Mopti also possesses the highest number of livestock markets (113) in the country [15], which attract 28% of Mali’s marketed breeding cattle [35]. Sikasso also is an important livestock source although not as prominent as Mopti and Ségou. It is characterised by a tropical wet climate [21] which explains the cultivation of the cash crop cotton (Gossypium hirsutum L.; [36]) predominating livestock farming.

3.2.2. Outgoing Livestock Flows

Cattle were leaving Bamako towards neighbouring Senegal (39% of outgoing flows) and to Kourémale (19%), one of the three livestock border markets to Guinea [37]. A large proportion of outbound sheep (39%) and goats (19%) were directly exported to Guinea (Figure 5).
Senegal and Guinea are major importers of livestock from Mali (Figure 5). A plausible reason for this is the dominance of Islam in both countries. As already mentioned, Islamic festivals provide a strong sink for livestock in West Africa [38]. Nevertheless, Guinea is also a transit location for livestock supply to Sierra Leone and Liberia [39] contributing to the large outflows from Mali. Additionally, Guinea’s national production of livestock, especially cattle, is plagued by parasitic disease and Africa’s highest incidence of trypanosomiasis [40].

3.2.3. Transits

Bamako lies on major transport corridors connecting different parts of the country as well as neighbouring countries. Therefore, we also recorded vehicles passing through the city for other destinations. Such transits were particularly relevant for cattle, with up to 19% of the total cattle flows being transits (excluding flows without spatial information). The majority of cattle transits in Bamako were sourced from Kati Dral (43%), 25 km from Bamako’s city centre, and transported mainly to Kourémale (58%) and to Senegal (11%; Figure 6). Kati Dral, a dominant livestock market, serves mainly for export and assembles cattle from other markets in the country, such as the Nioro market in the north west of the country [41].
The vehicular mobility of livestock into neighbouring countries of Mali has been facilitated by the improvement of road infrastructure. For example, livestock distribution to Senegal has benefitted from the Dakar-Bamako road and the other roads that connect to many major livestock sources within Bamako [15]. Due to the improvement of these roads, 31% of Mali’s cattle for export, representing the highest national cattle export proportion, pass through Bamako to Senegal [35].
According to our data, transits of small ruminants were less important than those of cattle. The proportion of sheep flows (excluding records without spatial information) in overall transit flows was 9–12% and occurred both at a very small (city to regional) scale (<5%) and across West Africa (39% to Guinea; Figure 6). Goats accounted for 9–18% of all transit flows and moved mainly within the national borders (Figure 6). One plausible reason for this could be that cattle are considered valuable assets and are therefore more important as a store of wealth [42] than small ruminants. Another reason is that in coastal countries, where demand is high, cattle keeping is challenging, one reason being that cattle are particularly susceptible to trypanosomiasis because the tse tse fly (Glossina sp Wiedemann, 1830) vector is common in the more humid coastal areas [43]. Hence, more cattle than sheep and goats are imported to coastal countries. Lastly, small ruminants may be more easily produced on a small-scale by people, hence its lower importance for transits.

3.2.4. Incoming Feed Flows

In our study, we captured about 500 daily records of livestock feed in the rainy season, about 200 in the harvest season, and about 124 in the hot season. About 43% of the recorded livestock feed flows were transported by motorbikes, followed by minibuses (15%), motorised tricycles (14%), hand trucks (13%), bicycles (5%; Figure 7a), private vehicles (4%), pedestrians (3%), trucks and other vehicles (2%), and donkey and horse cart (1%), indicating the small scale of the business. Additionally, feedstuffs were mostly transported over short distances, hence no large vehicles are required. Livestock feed was transported heaped or in bags (Figure 7b). Our data showed that 70% of the feed sources were sourced from within a 25-km radius from the city centre (Figure 8). The major areas were southwards of Bamako along the Niger river, namely Farada, Samaya, and Tourela. These areas encompass the flooded plains along the Niger river, which have better access to water and are therefore favourable for crop farming and pasture [44] in comparison with the northern downstream section of the Niger river which is narrower, rockier, and drier with less possibility of crop farming and lower availability of pasture [45].
The populations of cattle, sheep, and goats in Bamako have been estimated at 35,000, 58,000, and 36,000, respectively [35], which corresponds to a population of 33,900 ruminants of 250 kg body weight (Tropical Livestock Unit, TLU). With a yearly feed intake of 482 kg DM (dry matter) for an average sheep, 396 kg DM for a goat and 2156 kg for a cattle [46], it can be assumed that about 66,920 t of feed DM are required annually for the ruminant livestock herd in Bamako. Currently, the city loses surrounding grassland at a rate of about 2.6% per year while its urban area is expanding at 5.4% [47], mainly towards the Kabala axis, which is also one of the biggest zones of fodder production (Figure 6). Where grassland is not converted into an urban built-up area, the transport of feeds into the city will lead to nutrient depletion of the feed-supplying rural hinterlands if the nutrients are not returned in the form of livestock manure [46].

3.3. Future Perspective

Bamako, with a population of about 2.6 million (2020), will keep expanding to absorb its increasing population, projected to increase by 50% by 2030 [47,48]. This will increase the demand for food and in particular livestock products [49], given that the per capita meat consumption of urban dwellers is also increasing as the middle class grows in Sub-Saharan Africa [20]. In 2013, meat consumption in Mali reached an annual per capita consumption of 18.6 kg/capita [30] which was three times as high as in other parts of West Africa. However, it was still far below North America’s 36.1 kg/capita for that same year [30].
Increased livestock demand provides an economic opportunity for actors along the livestock supply chain. However, livestock infrastructure like marketing, processing, slaughtering, and veterinary services infrastructure in Bamako is inadequate [2]. This is partly because the organization of livestock institutions has been difficult, and modern livestock infrastructure like slaughter houses and milk dairies require uninterrupted electricity supply for efficient operation, despite major improvements in electricity coverage and reliability in recent years [50]. A more productive future may require increasing private investments in the sector [51], including for the efficient and reliable post-processing of livestock products.
Mali’s road transport of livestock is also affected by the country’s poor road infrastructure and political instability. The increased number of road checkpoints in response to the threat of terrorism in Mali slows down livestock transportation, meaning that livestock will spend longer time on the road, which may affect animal welfare, animal mortality, and animal price. Taking into consideration that only 16% of rural areas have access to roads [52], it is obvious that this situation bottlenecks vehicular livestock transportation. Herders will have to trek their animals to the next livestock “assembly” market from where livestock can be further transported on the road. The poor road network may also affect important livestock sources in the northern areas of Mopti, Timbuktu, and Gao, which means that herders will have to trek their livestock if they want to get to Bamako for better prices [15]. This trekking also implies that livestock herders will have more contact with farmers along the grazing corridor to Bamako which may trigger conflicts between herders and farmers [53].

4. Conclusions

Our study showed that livestock inflows exceeded the outflows by far for cattle, and to a smaller extent for small ruminants, underlining the city’s role as a consumption centre. Bamako also acts as a major transit hub for cattle, connecting the major cattle markets nationwide, and linking the country to Senegal and Guinea. Sheep, on the other hand, are rather kept in urban livestock markets before being exported. The flows of goats are small, both in terms of quantity and distance covered, possibly due to the spatial concentration of production and consumption within Bamako and its periphery. Our study revealed the importance of religious festivals for livestock trade, reflected in a substantially higher influx of sheep compared to other seasons.

Author Contributions

Conceptualization, L.A., H.K., E.K.A.-D. and A.B.; methodology, L.A., H.K., E.K.A.-D. and A.B.; validation, A.B., H.K.; formal analysis, L.A. and H.K.; investigation, L.A., H.K. and E.K.A.-D.; resources, A.B.; data curation, L.A., H.K., and E.K.A.-D.; writing—original draft preparation, L.A., H.K., R.R., J.P., S.S.; writing—review and editing, A.B., L.A., H.K., R.R., E.K.A.-D., J.P.; visualization, L.A. and H.K.; supervision, A.B.; project administration, A.B., H.K., E.K.A.-D.; funding acquisition, A.B. All authors have read and agreed to the published version of the manuscript.

Funding

This study was funded by the German Federal Ministry of Education and Research (BMBF) and the German Federal Ministry for Economic Cooperation and Development (BMZ) within the framework of the UrbanFoodPlus project (www.urbanfoodplus.org) as part of the GlobE initiative (BMBF, FKZ 031A242A).

Institutional Review Board Statement

Not applicable.

Informed Consent Statement

Not applicable.

Data Availability Statement

Data is contained within the article.

Acknowledgments

We would like to thank Hamidou Nantoumé of l’Institut d’Économie Rurale (IER), and Moussa Sissoko of Point Sud for their cooperation. We also thank our enumerators for their dedication and Billa Samuel Fru for supporting the first survey. The support of Police Nationale du Mali, Instituant le Controle Phytosanitaire en Republique du Mali and Direction Nationale Eaux et Forêts du Mali is greatly appreciated.

Conflicts of Interest

The authors declare no conflict of interest. The sponsors had no role in the design, execution, interpretation, or writing of the study.

Appendix A

Table
Table A1. Livestock flows (in numbers per day) in Bamako (Mali) in the hot, rainy, and harvest season of 2015–2017.
Table A1. Livestock flows (in numbers per day) in Bamako (Mali) in the hot, rainy, and harvest season of 2015–2017.
Number%
LivestockDirectionHotHarvestRainyLeanPeakRainy
CattleIncoming377259768406860
Outgoing261332332
Transits228978624257
No location information3061340333331
Total9373821288100100100
SheepIncoming10387868072616552
Outgoing90114816595
Transits1401309188116
No location information4451815785261537
Total1713121115,590100100100
GoatIncoming133113125285837
Outgoing78222217116
Transits47261510135
No location information21433177451752
Total472194338100100100

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Figure 1. Data collection points on major and minor access roads leading to the city of Bamako, Mali. Due to the diversion of the road leading from Kati to Bamako, data were collected at two other check points. Data duplicates were removed before analysis.
Figure 1. Data collection points on major and minor access roads leading to the city of Bamako, Mali. Due to the diversion of the road leading from Kati to Bamako, data were collected at two other check points. Data duplicates were removed before analysis.
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Figure 2. Daily incoming, outgoing, and transit numbers of cattle (a), sheep (b), and goat (c) during different seasons from 2015–2017 in Bamako, Mali.
Figure 2. Daily incoming, outgoing, and transit numbers of cattle (a), sheep (b), and goat (c) during different seasons from 2015–2017 in Bamako, Mali.
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Figure 3. Geographical sources of livestock recorded in Bamako (Mali) during the hot, rainy, and harvest season of 2015–2017.
Figure 3. Geographical sources of livestock recorded in Bamako (Mali) during the hot, rainy, and harvest season of 2015–2017.
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Figure 4. Flow maps of cattle, sheep, and goat into Bamako (Mali) during the hot, rainy, and harvest season of 2015–2017. The thickness of lines linking sources and destinations is proportional to the livestock volume.
Figure 4. Flow maps of cattle, sheep, and goat into Bamako (Mali) during the hot, rainy, and harvest season of 2015–2017. The thickness of lines linking sources and destinations is proportional to the livestock volume.
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Figure 5. Flow maps of cattle, sheep, and goat leaving Bamako (Mali) during the hot, rainy, and harvest season of 2015–2017. The thickness of the lines linking sources and destinations is proportional to livestock volume.
Figure 5. Flow maps of cattle, sheep, and goat leaving Bamako (Mali) during the hot, rainy, and harvest season of 2015–2017. The thickness of the lines linking sources and destinations is proportional to livestock volume.
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Figure 6. Flow maps of cattle, sheep, and goat transiting Bamako (Mali) during the hot, rainy, and harvest season of 2015–2017. The thickness of the lines linking sources and destinations is proportional to livestock volume.
Figure 6. Flow maps of cattle, sheep, and goat transiting Bamako (Mali) during the hot, rainy, and harvest season of 2015–2017. The thickness of the lines linking sources and destinations is proportional to livestock volume.
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Figure 7. Livestock feed (a) transported by a motorised tricycle and a motorcycle and (b) in a heap at the roadside in Bamako, Mali.
Figure 7. Livestock feed (a) transported by a motorised tricycle and a motorcycle and (b) in a heap at the roadside in Bamako, Mali.
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Figure 8. Locations of important sources of livestock feed in Bamako. Red bubbles represent locations and their diameter proportional to the total record count. Data were collected in the hot, rainy, and harvest season of 2015–2017.
Figure 8. Locations of important sources of livestock feed in Bamako. Red bubbles represent locations and their diameter proportional to the total record count. Data were collected in the hot, rainy, and harvest season of 2015–2017.
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Table
Table 1. Transportation mode, livestock type and its capacity in livestock movements of Bamako (Mali) from 11/2015 to 8/2017.
Table 1. Transportation mode, livestock type and its capacity in livestock movements of Bamako (Mali) from 11/2015 to 8/2017.
Transportation ModeLivestockCapacity
Articulated truckCattle40
TruckCattle20
Pick-up truckCattle1
TaxiCattle1
Tricycle vanCattle1
Articulated truckSheep200
TruckSheep/Goat150
Pick-up truckSheep/Goat10
Commercial busSheep/Goat50
Commercial bus (roof)Sheep/Goat15
Tricycle vanSheep/Goat10
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Amprako, L.; Karg, H.; Roessler, R.; Provost, J.; Akoto-Danso, E.K.; Sidibe, S.; Buerkert, A. Vehicular Livestock Mobility in West Africa: Seasonal Traffic Flows of Cattle, Sheep, and Goats across Bamako. Sustainability 2021, 13, 171. https://doi.org/10.3390/su13010171

AMA Style

Amprako L, Karg H, Roessler R, Provost J, Akoto-Danso EK, Sidibe S, Buerkert A. Vehicular Livestock Mobility in West Africa: Seasonal Traffic Flows of Cattle, Sheep, and Goats across Bamako. Sustainability. 2021; 13(1):171. https://doi.org/10.3390/su13010171

Chicago/Turabian Style

Amprako, Louis, Hanna Karg, Regina Roessler, Jennifer Provost, Edmund Kyei Akoto-Danso, Seydou Sidibe, and Andreas Buerkert. 2021. "Vehicular Livestock Mobility in West Africa: Seasonal Traffic Flows of Cattle, Sheep, and Goats across Bamako" Sustainability 13, no. 1: 171. https://doi.org/10.3390/su13010171

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