187 research outputs found
New Technologies for Ecosystem Analysis Planning and Management
No full textPlanning the rural environment is one of the most intriguing examples of technical challenge where a multi-disciplinary approach plays a crucial role. The agricultural production, both food and non-food, the social role of rural settlements, the state and diffusion of the infrastructural networks, the rural architectonic heritage that in many countries constitutes a major positive value, should be appropriately considered and sinergically interlaced for a sound planning of agricultural biosystems.
Human activities impose a transformation of the extra-urban land that may lead to the modification of the frail equilibrium of whole ecosystems. Sound planning strategies should be therefore pursued, employing a multidisciplinary approach that should take into account geographical, environmental and landscape factors as variables interacting among themselves and with the social and economic aspects. In order to simultaneously analyse all these properties, tools able to manage, interpret and integrate several data are necessary
An introduced Polychaete in South America - Ecologic Affinities of Manayunkia speciosa (Polychaeta, Sabellidae) and the Oligochaetes of Uruguay River, Argentina
No full textNon
The Functioning of Ecosystems
No full textThe ecosystems present a great diversity worldwide and use various functionalities according to ecologic regions. In this new context of variability and climatic changes, these ecosystems undergo notable modifications amplified by domestic uses of which it was subjected to. Indeed the ecosystems render diverse services to humanity from their composition and structure but the tolerable levels are unknown. The preservation of these ecosystemic services needs a clear understanding of their complexity. The role of the research is not only to characterise the ecosystems but also to clearly define the tolerable usage levels. Their characterisation proves to be important not only for the local populations that use it but also for the conservation of biodiversity. Hence, the measurement, management and protection of ecosystems need innovative and diverse methods. For all these reasons, the aim of this book is to bring out a general view on the biogeochemical cycles, the ecological imprints, the mathematical models and theories applicable to many situations
The Functioning of Ecosystems
No full textThe ecosystems present a great diversity worldwide and use various functionalities according to ecologic regions. In this new context of variability and climatic changes, these ecosystems undergo notable modifications amplified by domestic uses of which it was subjected to. Indeed the ecosystems render diverse services to humanity from their composition and structure but the tolerable levels are unknown. The preservation of these ecosystemic services needs a clear understanding of their complexity. The role of the research is not only to characterise the ecosystems but also to clearly define the tolerable usage levels. Their characterisation proves to be important not only for the local populations that use it but also for the conservation of biodiversity. Hence, the measurement, management and protection of ecosystems need innovative and diverse methods. For all these reasons, the aim of this book is to bring out a general view on the biogeochemical cycles, the ecological imprints, the mathematical models and theories applicable to many situations
Exploring the Impact of Ecological Degradation on the Green Development Efficiency: An Empirical Analysis Using the Novel Epsilon‐Based Measure and Global Malmquist–Luenberger Index
No full textThe profound consequences of ecological degradation on humanity's well-being are a severe matter acknowledged globally. This study examines the impact of ecological degradation on green development efficiency in less developed countries. A dataset from 1990 to 2020 was used to break down the impacts of ecological degradation on green development efficiency. Green development efficiency was calculated based on the epsilon-based measure model, while the dynamic change of green development efficiency was explored with the Global Malmquist-Luenberger Index model. The panel-corrected standard errors (PCSE) and feasible generalised least squares (FGLS) models are conducted to test the influence of ecological degradation on green development efficiency. The results show that ecological degradation inhibits green development efficiency, whereas green FDI, urbanisation, and economic growth benefit the increase of green development efficiency. In addition, government intervention shows a negative correlation with green development efficiency. The results of the spatial Durbin model (SDM) of green development efficiency also demonstrate an overall strong negative spatial spillover effect on local and neighbouring regions, with more significant effects at levels of the surroundings
Diversity of Ecosystems
No full textThe ecosystems present a great diversity worldwide and use various functionalities according to ecologic regions. In this new context of variability and climatic changes, these ecosystems undergo notable modifications amplified by domestic uses of which it was subjected to. Indeed the ecosystems render diverse services to humanity from their composition and structure but the tolerable levels are unknown. The preservation of these ecosystemic services needs a clear understanding of their complexity. The role of research is not only to characterise the ecosystems but also to clearly define the tolerable usage levels. Their characterisation proves to be important not only for the local populations that use it but also for the conservation of biodiversity. Hence, the measurement, management and protection of ecosystems need innovative and diverse methods. For all these reasons, the aim of this book is to bring out a general view on the function of ecosystems, modelling, sampling strategies, invading species, the response of organisms to modifications, the carbon dynamics, the mathematical models and theories that can be applied in diverse conditions
Bibliographie
No full textSources (par ordre chronologique) A- Thèses soutenues par des chercheurs nigériens Thèses en histoire soutenues en France et au Canada SALIFOU (André), Le Damagaram ou sultanat de Zinder au XIXe, Toulouse, thèse de troisième cycle, 1970/71. BA Konaté (Adam), Sonni Ali Ber, Varsovie, Université de Varsovie, 1975. HAMANI (Djibo Mallam), Contribution à l’étude des États hausa. L’Adar précolonial (République du Niger), Aix-en-Provence, 1975, dir. Yves Person. KARIMOU (Mahamane), Tradition orale e..
Autonomic management of networked small-medium factories
No full textThe Chapter reports the achievements of a research project that is developing a software platform with a suite of autonomic services enabling every company in the network to move from a situation where it wastes valuable resources in struggling with its customers and suppliers, towards a rational business environment where communication becomes faster, and operation and collaboration more efficient. The ultimate objective of the project is to set-up, develop, experiment and promote the adoption of a new collaboration practice within networked factories taking advantage of the autonomic model applied to a suite of support software services
Typologie et dynamique des peuplements arborés du bas glacis de Bondoukuy, ouest du Burkina Faso
No full textLa région de Bondoukuy est située dans le sud ouest du Burkina Faso (3°45' et 11°51'), dans le secteur sud soudanien. La pluviosité annuelle est de 847 mm répartis sur 5 à 6 mois. Elle permet la pratique de cultures céréalières comportant une rotation avec le coton, sous un parc arboré ou arbustif. L'étude de la typologie et de la dynamique des peuplements arborés du bas-glacis, a pour objectif la caractérisation de la régénération des populations des différentes espèces des parcs agroforestiers. L'étude est basée sur des observations à l'échelle des champs et sur des entretiens avec les paysans. Une typologie des peuplements arborés a d'abord été réalisée à partir de photographies aériennes. Celle-ci a abouti à la définition de dix unités paysagères qui ont servi de base pour la caractérisation du peuplement arboré au sol. En fonction de la dominance d'une ou de deux espèces, 5 types principaux de parcs ont été définis, caractérisés par un ou plusieurs faciès de parc. Il s'agit des parcs à #Parkia biglobosa et #Butyrospermum paradoxum, des parcs à dominance exclusive de #Butyrospermum paradoxum, des parcs à #Butyrospermum paradoxum et #Bombax costatum, des parcs à #Butyrospermum paradoxum et #Pterocarpus erinaceus, des parcs à #Butyrospermum paradoxum et #Burkea africana$. Par ailleurs, le recouvrement arbustif ou arboré par strate a permis de classer chaque faciès en parc arbustif ou arboré, bas ou haut. De l'analyse de la structure des populations des espèces par faciès, il se dégage d'une façon générale une classe d'âge qui domine les autres, entre 75 et 150 cm pour le karité, qui correspond aux individus qui produisent le maximum de fruits. La structure des populations des espèces prend ainsi une allure en cloche, de tendance équienne. Dans le contexte d'une culture itinérante, cette structure peut avoir une allure bimodale, reflétant la présence de plusieurs générations. (Résumé d'auteur
Etudes floristique, phytosociologique et phytogéographique de la végétation du Parc Régional du W du Niger
No full textDoctorat en Sciencesinfo:eu-repo/semantics/nonPublishe
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