Floristic and structural vegetation typology of bonobo habitats in a forest-savanna mosaic (Bolobo Territory, D.R.Congo)

Pennec, Flora; Krief, Sabrina; Hladik, Annette; Ayingweu, Constantin Lubini; Bortolamiol, Sarah; Ngawolo, Jean-Christophe Bokika; Narat, Victor

doi:10.5091/plecevo.2016.1157

Cited by 15 publications

(31 citation statements)

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“…Bonobo groups might encounter each other when food resources are abundant enough for individuals of associating groups. Bonobos, at present, inhabit diverse environments from dense forests, where most studies of wild bonobos, including this study, have been conducted, to the forest‐savanna mosaics where food abundance would be relatively low (Inogwabini, Bewa, Longwango, Abokome, & Vuvu, ; Pennec et al, ). Detailed comparisons of behavioral data during inter‐group associations across various environments are needed to understand the ecological factors that affect inter‐group relationships in bonobos.…”

Section: Discussionmentioning

confidence: 99%

Inter‐group aggressive interaction patterns indicate male mate defense and female cooperation across bonobo groups at Wamba, Democratic Republic of the Congo

Tokuyama

Sakamaki

Furuichi

2019

American J Phys Anthropol

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Objectives: Although conflicts between groups over valuable resources are common in the animal kingdom, an individual's strategy toward out-group individuals may differ according to the benefits and costs received from inter-group interactions. Groups of bonobos encounter each other frequently and may mingle and range together from a few hours to a few days. During these inter-group associations, individuals across groups exhibit both aggressive and affiliative interactions. This study aimed to examine the strategies that bonobos employ with other groups, by comparing the patterns of within-and inter-group aggression. Materials and methods:We observed the aggressive interactions within a group of wild bonobos and between the group and three neighboring groups in Wamba, Luo Scientific Reserve, DR Congo.Results: Bonobos increased the level of cooperation to attack out-group individuals more than they do to attack within-group individuals. Additionally, they reduced the aggression between within-group members during inter-group associations, compared to that when not associated with other groups. Males selectively and cooperatively attacked out-group males. Inter-group aggression among females was rare. Furthermore, females sometimes formed coalitions with out-group individuals to attack a common target. Discussion: Our results support the hypothesis that inter-group competition occurs in bonobos, with males across groups competing over mates. Females across groups were tolerant and even cooperative with each other. Regardless of the ideal male strategy, female tolerant and cooperative relationships across groups and female within-group superiority over males could preserve tolerant inter-group relationships in bonobos. K E Y W O R D S agonistic interactions, cooperation, inter-group relationships, multigroup association, Pan paniscus

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Section: Discussionmentioning

confidence: 99%

Inter‐group aggressive interaction patterns indicate male mate defense and female cooperation across bonobo groups at Wamba, Democratic Republic of the Congo

Tokuyama

Sakamaki

Furuichi

2019

American J Phys Anthropol

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“…We conducted the study in the North Batéké Chiefdom of the Maï‐Ndombe Province (DRC). This region is situated in a forest‐savannah mosaic at the edge of the Congo Basin forest (Pennec et al., 2016). This humid tropical zone experiences four seasons: a major dry season from mid‐May to mid‐September; a major rainy season from September to January; and one short dry season from January to March, followed by a short rainy season from March to May.…”

Section: Methodsmentioning

confidence: 99%

“…Between May 2012 and May 2013, the annual rainfall was 2,387 mm (Narat, Pennec, Simmen, Ngawolo, & Krief, 2015). Between May 2012 and April 2014, the mean temperature at 7.00 a.m. was 22.6°C (Pennec et al., 2016). Located <300 km from the capital Kinshasa, with direct access by the Congo River, the region is a primary supplier of agricultural food for the capital, in particular maize and cassava, but also of forest products as Gnetum africanum leaves, forest snails, bushmeat and charcoal.…”

Section: Methodsmentioning

confidence: 99%

“…Conversely, hunting, fishing and gathering are punctual resource exploitation activities and do not actively influence landscape dynamics and structure in the short term. In the long term, TA B L E 3 Location of the 51 plots addressing landscape structure and botanical composition (Pennec et al, 2016) in comparison with study land cover map using 2017 Sentinel-2 satellite imagery agriculture. As Figure 6 shows, very few agricultural fields are located in the community forest network.…”

Section: Landscape Dynamics According To Classification Based On Lamentioning

confidence: 99%

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Multidimensional analysis of landscape dynamics in a Central African forest‐savannah mosaic

et al. 2020

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Most landscape cover assessments for conservation programmes rely largely on remote sensing analyses. These analyses, however, neglect how people inhabiting protected zones perceive and structure land cover. Using socio-ecological systems (SES) analysis in a forest-savannah mosaic on the Congo Basin forest edge (Democratic Republic of Congo), we investigated how human practices, landscape perceptions and land use patterns affected forest cover. We conducted remote sensing analysis using a Sentinel-2 satellite image and 187 GPS landmarks, producing a land cover map with 11 classes. Our results yielded an 81.85% correspondence with additional 164 GPS landmarks, a robust score in tropical areas. We conducted 40 individual interviews, eighteen focus group discussion workshops and nine months of participant observation of human practices to identify 19 land units and elaborate a granular SES system structuring the landscape. Integrating local knowledge and practices with general ecological and agronomic processes, we developed a landscape dynamics model revealing progressive forest colonisation of savannahs. Our methods demonstrate that a forest-edge landscape cover evaluation through remote sensing and local knowledge can contribute to finer-grained assessment of land cover and ecosystem services. This assessment can assist conservation efforts by considering local populations' practices on and perceptions of landscape change. Résumé La plupart des études de couverture terrestre effectuées dans le cadre de programmes de conservation s'appuient en grande partie sur des analyses basées sur la télédétection. Cependant, ces analyses négligent la façon dont les populations habitant dans les zones protégées perçoivent et structurent la couverture terrestre. À l'aide d'analyses portant sur les systèmes socio-écologiques (SEE) effectuées dans une mosaïque de forêts et de savanes située à la lisière de la forêt du Bassin du Congo (République démocratique du Congo), nous avons étudié la façon dont les pratiques humaines, la perception de la couverture terrestre et la structure de l'utilisation des terres affectait la couverture forestière. Nous avons réalisé une analyse basée sur la télédétection en utilisant une image satellite Sentinel 2 et 187 repères GPS pour produire une carte de la couverture terrestre contenant 11 catégories. Nos résultats ont montré une correspondance de 81.85% avec 164 repères GPS supplémentaires, | 693 DEMICHELIS Et aL.

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“…For example, many frugivores are able to track fruiting patterns at small spatial and temporal scales, and fruit availability can be a driver of frugivorous species' abundance (White 1978). These patterns have been investigated in a number of frugivorous bird species (e.g., Rey 1995;Restrepo, Gomez, and Heredia 1999;Moegenburg and Levey 2003;Seoane et al 2006), various ape (e.g., Vogel et al 2015;Pennec et al 2016;Marshall and Leighton 2006;Marshall et al 2014), and various primate species (e.g., Kinnaird and O'Brien 2005;Milton et al 2005;Rovero and Struhsaker 2007). However, climatic constraints to species biogeography are the most common of range constraints and are thought to be specifically limiting to a number of taxa, including primates (Korstjens et al 2010;Stone et al 2013).…”

Section: Introductionmentioning

confidence: 99%

Chimpanzee (Pan troglodytes verus) density and environmental gradients at their biogeographical range edge

Wessling

Dieguez

Llana

et al. 2020

Preprint

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Identifying ecological gradients at the range edge of a species is an essential step for revealing the underlying mechanisms and constraints that limit the species' geographic range. Here, we aimed to describe the patterns of variation in chimpanzee density and habitat characteristics perpendicular to the northern range edge and to investigate potential environmental mechanisms for chimpanzee distribution in a savanna-mosaic habitat. We estimated chimpanzee densities at six sites forming a 126km latitudinal gradient at the biogeographical range edge of the western chimpanzee in the savanna-mosaic habitats of southeastern Senegal. To accompany these data, we used systematically placed vegetation plots to characterize the habitats at each site for habitat heterogeneity, tree density and size, floral assemblages, among other variables. We found that both biotic and abiotic factors represent potential determinants of the chimpanzee range limit in this ecoregion. Specifically, chimpanzee-occupied landscapes at the limit had smaller available floral assemblages, less habitat heterogeneity, and contained fewer closed canopy habitats in which chimpanzees could seek refuge from high temperatures than landscapes farther from the range limit. This pattern was accompanied by a decline in chimpanzee density with increasing proximity to the range limit. Our results provide several indications of the potential limits to the chimpanzee niche and the implications of these limits to chimpanzee biogeography, especially in the face of climate change predictions, as well as to species distributional modeling more generally.

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Floristic and structural vegetation typology of bonobo habitats in a forest-savanna mosaic (Bolobo Territory, D.R.Congo)

Cited by 15 publications

References 0 publications

Inter‐group aggressive interaction patterns indicate male mate defense and female cooperation across bonobo groups at Wamba, Democratic Republic of the Congo

Inter‐group aggressive interaction patterns indicate male mate defense and female cooperation across bonobo groups at Wamba, Democratic Republic of the Congo

Multidimensional analysis of landscape dynamics in a Central African forest‐savannah mosaic

Chimpanzee (Pan troglodytes verus) density and environmental gradients at their biogeographical range edge

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