Search

Your search keyword '"Georges Gulemvuga"' showing total 2 results
Start Over Author "Georges Gulemvuga" Topic 01 natural sciences
2 results on '"Georges Gulemvuga"'

1. A global agenda for advancing freshwater biodiversity research

Author

Ralf B. Schäfer, Matthew Gollock, Hans Jürgen Hahn, Pierre A. Mvogo Ndongo, Jason D. Stockwell, Zeb S. Hogan, Jonathan M. Jeschke, Francis S. Magbanua, Thibault Datry, Clifford A. Ochs, Javier Muzon, Shin-ichiro S. Matsuzaki, James H. Thorp, Benjamin Kupilas, Martin Friedrichs-Manthey, Jens C. Nejstgaard, Harmony Patricio, Janne Soininen, Nike Sommerwerk, Susanne Worischka, Rita Adrian, Juergen Geist, Jan J. Kuiper, Angelica Batista-Morales, Ismael A. Kimirei, Levan Mumladze, David Dudgeon, Mathias Kuemmerlen, Meilan Jiang, Christopher P. Gordon, Georges Gulemvuga, Peter Haase, Astrid Schmidt-Kloiber, Jean Ricardo Simões Vitule, Ding Wang, Jonathan D. Tonkin, Topiltzin Contreras-MacBeath, Gregor Kalinkat, Sami Domisch, Hans-Peter Grossart, Virgilio Hermoso, Daniel Hering, Bert Kohlmann, Simone D. Langhans, Peter Goethals, Donald J. Baird, Qinghua Cai, Richard K. Johnson, Claudio Baigún, Alain Maasri, Subodh Sharma, Mireia Valle, Jeffrey J. Opperman, Jana Friedrich, Florian Leese, Viola Clausnitzer, Steffen U. Pauls, Bindiya Rashni, Oxana Nikitina, Frank Suhling, Jani Heino, Joerg Freyhof, Rajeev Raghavan, Ole Seehausen, Pablo E. Gutiérrez-Fonseca, Alonso Ramírez, Tibor Eros, Klaus-Douwe B. Dijkstra, Lee E. Brown, Steven J. Cooke, Vere Ross-Gillespie, Aventino Kasangaki, Gonzalo Delacámara, Michael T. Monaghan, Richard Lansdown, Fengzhi He, Bakhtiyor Karimov, Christian Wolter, Luc De Meester, Oghenekaro Nelson Odume, Michael J. Samways, Deep Narayan Shah, Franz Hölker, Klement Tockner, Mark O. Gessner, Martin Volk, Rebecca Tharme, Ram Devi Tachamo Shah, Núria Bonada, David Tickner, Van Tu Do, João Vitor Campos-Silva, Mihai Adamescu, Charles P. Hawkins, Hendrik Freitag, Sonja C. Jähnig, Institute of Biotechnology, Biosciences, Department of Geosciences and Geography, Helsinki Institute of Sustainability Science (HELSUS), Thrall, Peter (Herausgeber*in), and Thrall, Peter

Subjects
0106 biological sciences, 010504 meteorology & atmospheric sciences, Research areas, data infrastructure, freshwater biodiversity crisis, Social ecology, Biodiversity, Fresh Water, bepress|Life Sciences|Biodiversity, 010501 environmental sciences, 01 natural sciences, CITIZEN SCIENCE, bepress|Life Sciences, freshwaters, Research priorities, Freshwaters, CHALLENGES, Ecology, QS Ecology, Management, research priorities, 1181 Ecology, evolutionary biology, Data infrastructure, Life Sciences & Biomedicine, Biologie, management, Conservation of Natural Resources, Monitoring, Evolution, Ecology (disciplines), Environmental Sciences & Ecology, 010603 evolutionary biology, GeneralLiterature_MISCELLANEOUS, Freshwater biodiversity crisis, Behavior and Systematics, Political science, 14. Life underwater, Environmental planning, DAMS, Ecosystem, Ecology, Evolution, Behavior and Systematics, 0105 earth and related environmental sciences, Science & Technology, 010604 marine biology & hydrobiology, 15. Life on land, social ecology, monitoring, 13. Climate action, Sustainable management, Earth and Environmental Sciences, 570 Life sciences, biology, Stewardship
Abstract

Global freshwater biodiversity is declining dramatically, and meeting the challenges of this crisis requires bold goals and the mobilisation of substantial resources. While the reasons are varied, investments in both research and conservation of freshwater biodiversity lag far behind those in the terrestrial and marine realms. Inspired by a global consultation, we identify 15 pressing priority needs, grouped into five research areas, in an effort to support informed stewardship of freshwater biodiversity. The proposed agenda aims to advance freshwater biodiversity research globally as a critical step in improving coordinated actions towards its sustainable management and conservation. ispartof: ECOLOGY LETTERS vol:25 issue:2 pages:255-263 ispartof: location:England status: published

Published
2022
Full Text
View/download PDF

2. Recent budget of hydroclimatology and hydrosedimentology of the Congo River in Central Africa

Author

Santiago Yepez, Gil Mahé, Georges Gulemvuga, Raphael Tshimanga, Guy Dieudonne Moukandi N’Kaya, C.R. Nguimalet, Didier Orange, Jean Marie Tshitenge, Mark A. Trigg, Alain Laraque, Géosciences Environnement Toulouse (GET), Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD), University Marien Ngouabi of Brazzaville (umng), Ecologie fonctionnelle et biogéochimie des sols et des agro-écosystèmes (UMR Eco&Sols), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut de Recherche pour le Développement (IRD)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), University of Kinshasa (UNIKIN), Hydrosciences Montpellier (HSM), Institut national des sciences de l'Univers (INSU - CNRS)-Institut de Recherche pour le Développement (IRD)-Université Montpellier 2 - Sciences et Techniques (UM2)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Université de Bangui, University of Leeds, Universidad de Concepción [Chile], Commission Internationale du Bassin Congo-Oubangui-Sangha (CICOS), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut de Recherche pour le Développement (IRD)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut Agro - Montpellier SupAgro, Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro), Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), and Universidad de Concepción - University of Concepcion [Chile]

Subjects
lcsh:Hydraulic engineering, 010504 meteorology & atmospheric sciences, Geography, Planning and Development, 0207 environmental engineering, Drainage basin, Aquifer, 02 engineering and technology, Aquatic Science, Structural basin, 01 natural sciences, Biochemistry, Water balance, Hydrology (agriculture), lcsh:Water supply for domestic and industrial purposes, lcsh:TC1-978, Tributary, hydroclimatology, hydrosedimentology, [SDU.STU.HY]Sciences of the Universe [physics]/Earth Sciences/Hydrology, 020701 environmental engineering, hydrogeochemical, 0105 earth and related environmental sciences, Water Science and Technology, [SDV.EE]Life Sciences [q-bio]/Ecology, environment, geography, lcsh:TD201-500, geography.geographical_feature_category, Plateau, 15. Life on land, 6. Clean water, 13. Climate action, Erosion, Environmental science, Congo River Basin, Physical geography
Abstract

Although the Congo Basin is still one of the least studied river basins in the world, this paper attempts to provide a multidisciplinary but non-exhaustive synthesis on the general hydrology of the Congo River by highlighting some points of interest and some particular results obtained over a century of surveys and scientific studies. The Congo River is especially marked by its hydrological regularity only interrupted by the wet decade of 1960, which is its major anomaly over nearly 120 years of daily observations. Its interannual flow is 40,500 m3 s−1. This great flow regularity should not hide important spatial variations. As an example, we can cite the Ubangi basin, which is the most northern and the most affected by a reduction in flow, which has been a cause for concern since 1970 and constitutes a serious hindrance for river navigation. With regard to material fluxes, nearly 88 × 106 tonnes of material are exported annually from the Congo Basin to the Atlantic Ocean, composed of 33.6 × 106 tonnes of TSS, 38.1 × 106 tonnes of TDS and 16.2 × 106 tonnes of DOC. In this ancient flat basin, the absence of mountains chains and the extent of its coverage by dense rainforest explains that chemical weathering (10.6 t km−2 year−1 of TDS) slightly predominates physical erosion (9.3 t km−2 year−1 of TSS), followed by organic production (4.5 t km−2 year−1 of DOC). As the interannual mean discharges are similar, it can be assumed that these interannual averages of material fluxes, calculated over the longest period (2006–2017) of monthly monitoring of its sedimentology and bio-physical-chemistry, are therefore representative of the flow record available since 1902 (with the exception of the wet decade of 1960). Spatial heterogeneity within the Congo Basin has made it possible to establish an original hydrological classification of right bank tributaries, which takes into account vegetation cover and lithology to explain their hydrological regimes. Those of the Batéké plateau present a hydroclimatic paradox with hydrological regimes that are among the most stable on the planet, but also with some of the most pristine waters as a result of the intense drainage of an immense sandy-sandstone aquifer. This aquifer contributes to the regularity of the Congo River flows, as does the buffer role of the mysterious “Cuvette Centrale”. As the study of this last one sector can only be done indirectly, this paper presents its first hydrological regime calculated by inter-gauging station water balance. Without neglecting the indispensable in situ work, the contributions of remote sensing and numerical modelling should be increasingly used to try to circumvent the dramatic lack of field data that persists in this basin.

Published
2020
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results