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FIGURES 1–10 in Placoneis cocquytiae, a new raphid diatom (Bacillariophyceae) from the Senegal River (Senegal, West Africa)
No full textFIGURES 1–10. LM: Placoneis cocquytiae, images to depict variation; all from the type population in Kidira, Senegal. Scale bar = 10 µm.Published as part of Fofana, Cheikh Abdoul Kader, Sow, El Hadji, Taylor, Jonathan, Ector, Luc & Vijver, Bart Van De, 2014, Placoneis cocquytiae, a new raphid diatom (Bacillariophyceae) from the Senegal River (Senegal, West Africa), pp. 139-147 in Phytotaxa 161 (2) on page 141, DOI: 10.11646/phytotaxa.161.2.5, http://zenodo.org/record/512898
Placoneis cocquytiae, a new raphid diatom (Bacillariophyceae) from the Senegal River (Senegal, West Africa)
No full textFofana, Cheikh Abdoul Kader, Sow, El Hadji, Taylor, Jonathan, Ector, Luc, Vijver, Bart Van De (2014): Placoneis cocquytiae, a new raphid diatom (Bacillariophyceae) from the Senegal River (Senegal, West Africa). Phytotaxa 161 (2): 139-147, DOI: 10.11646/phytotaxa.161.2.5, URL: http://dx.doi.org/10.11646/phytotaxa.161.2.
Figs 1–5 in Morphology of two Mastogloia species (Bacillariophyta) from Lac de Guiers (Senegal) and comparison with the type material of M. braunii
No full textFigs 1–5. Mastogloia braunii Grunow. Light micrographs (LM) of valves from the type population (Grunow 23583 – capsule 0645, Vienna, Austria). 1–3. LM views of 3 valves showing variation in valve size and shape. The arrows in Fig. 2 indicate shortened striae near the central area. 3–4. Same valve taken at different foci. 4–5. LM views of the partectal ring with the partecta. Scale bar: 10 μm.Published as part of Vijver, Bart Van De, Fofana, Cheikh Abdoul Kader, Sow, El Hadji, Cocquyt, Christine, Blanco, Saúl & Ector, Luc, 2017, Morphology of two Mastogloia species (Bacillariophyta) from Lac de Guiers (Senegal) and comparison with the type material of M. braunii, pp. 1-23 in European Journal of Taxonomy 374 on page 4, DOI: 10.5852/ejt.2017.374, http://zenodo.org/record/383851
FIGURES 11–17 in Placoneis cocquytiae, a new raphid diatom (Bacillariophyceae) from the Senegal River (Senegal, West Africa)
No full textFIGURES 11–17. SEM: Placoneis cocquytiae, all images from type population, Kidira, Senegal. Fig. 11. External overview of an entire valve; arrows indicate presence of an undulation in raphe branches. Note also irregular final striae near apex. Fig. 12. External overview of an entire valve in oblique view showing the series of areolae on mantle and stepped mantle edge. Fig. 13. External detail of central area allowing a view of the proximal raphe pores. Fig. 14. External detail of valve apex showing mantle areolae, distal raphe ending and irregular last stria on valve face. Fig. 15. Internal overview of entire valve. Fig. 16. Internal detail of central area showing raised central part and short deflected proximal raphe endings; note volate occlusions. Fig. 17. Internal detail of valve apex with helictoglossa. Scale bars represent10 µm.Published as part of Fofana, Cheikh Abdoul Kader, Sow, El Hadji, Taylor, Jonathan, Ector, Luc & Vijver, Bart Van De, 2014, Placoneis cocquytiae, a new raphid diatom (Bacillariophyceae) from the Senegal River (Senegal, West Africa), pp. 139-147 in Phytotaxa 161 (2) on page 142, DOI: 10.11646/phytotaxa.161.2.5, http://zenodo.org/record/512898
VULNÉRABILITÉ DE LA COMMUNE DE DJILOR (RÉGION DE FATICK) AUX CHANGEMENTS CLIMATIQUES ET STRATÉGIES D’ADAPTATION DES COMMUNAUTÉS
Full text linkThe municipality of Djilor is marked by a tendency to degradation of resources. They are subject to the effects of climate change. This degradation is manifested by salinization of agricultural land, reduction of vegetation cover, reduction of grazing etc. Thus, the study of the vulnerability of the commune of Djilor to climate change and adaptation strategies of communities is the subject of this contribution. It allows us to understand the adaptation systems of local populations to the effects of climate change. The approach integrates the tools of vulnerability and adaptive capacity analysis to climate change (AVCA) and identification of risks at the community level - adaptation and livelihoods (CRiSTAL). This allowed for a participatory diagnosis of threats, constraints and opportunities related to climate change and endogenous knowledge on adaptation measures. The results show the existence of five categories of resources: natural resources, physical resources, human resources, financial resources and social resources. The analysis of vulnerability reveals that hazards directly or indirectly linked to climate change are present and are manifested more by salinization, rainfall variability, drought and floods. These hazards negatively influence these resources and have consequences on agriculture, livestock, fishing, forestry and trade. Faced with this situation, the populations are adopting adaptation strategies. Nevertheless, the situation persists and its effects are still remarkable
Evolution de la Mangrove de la Reserve de Biosphere du Delta du Saloum, Senegal
Full text linkThe mangrove is at the base of many ecological and socioeconomic functions in the Saloum Delta. However, in recent years, this ecosystem is subject to degradation whose causes are natural and human. It is thus necessary to study the dynamics of this ecosystem in order to understand the factors that contribute to its degradation. The remote sensing is a frequently used tool for monitoring environments. It is often used to study the spatiotemporal evolution of wetlands in the Sahelian zone. The adopted approach integrates Corona aerial photography, 1984 and 1999 Landsat satellite imagery, Sentinel 2 satellite imagery and fieldwork. The results show a regressive dynamics of the mangrove swamp which translates as follows: 55831.03 ha in 1965, 53533.70 ha in 1984, 54,135.86 ha in 1999, 53691.69 ha in 2017 and a decline rate of 3.83% between 1965 and 2017. La mangrove est à la base de multiples fonctions écologiques et socioéconomiques dans le delta du Saloum. Cependant, depuis quelques années, cet écosystème est soumis à une dégradation dont les causes sont d’ordre naturel et anthropique. Il s’avère ainsi important d’étudier la dynamique de cet écosystème pour comprendre les facteurs qui concourent à sa dégradation. La télédétection constitue un outil fréquemment utilisé pour le suivi des milieux. Il est souvent utilisé pour étudier l’évolution spatiotemporelle des milieux humides en zone sahélienne. Dans le cas de cette étude, la méthodologie utilisée intègre le traitement des photographies aériennes Corona de 1965, des images satellitaires Landsat de 1984 et 1999, Sentinel 2 de 2017 et destravaux de terrain pour l’élaboration des cartes d’occupation du sol. Les résultats montrent une dynamique à tendance régressive de la mangrove qui se traduit de la sorte : 55831,03 ha en 1965, 53533,70 ha en 1984, 54135,86 ha en 1999, 53691,69 ha en 2017 et un taux de recul de 3,83% entre 1965 et 2017
Les enjeux sociaux du discours sur la pauvreté en milieu rural sénégalais (perceptions du phénomène et production de normes à Niakhar et à Bakel)
No full textLa thèse montre, en pointant l'exemple du Sénégal (Niakhar en pays serer, Bakel chez les soninké), pays africain en développement faisant l'objet de mesures spécifiques de réduction de la pauvreté, les rapports de pouvoir qui structurent l'avènement du discours massif sur la pauvreté dans le champ du développement. Les acteurs intervenant à différents niveaux (local, national, global) instrumentalisent le thème de la lutte contre la pauvreté pour défendre leurs positions et légitimer leurs fonctions. De ce fait, les interactions avec la population trouvent difficilement un espace d'expression, en raison de la privatisation de l'accès aux dispositifs de solidarité collective ou institutionnelle. Il en ressort que la configuration de l'État post-ajustement, marqué par une désubstantialisation de la citoyenneté et la multiplication d'acteurs fonctionnant avec des logiques concurrentes, constitue l'enjeu majeur du discours sur la pauvreté.PARIS1-BU Pierre Mendès-France (751132102) / SudocSudocFranceF
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
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