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Analyse De Limpact Dune Aire Marine Protegee Amp Sur Le Fonctionnement Trophique Dun Ecosysteme
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Book Synopsis Analyse de l'impact d'une Aire Marine Protégée (AMP) sur le fonctionnement trophique d'un écosystème by : Mathieu Colleter
Download or read book Analyse de l'impact d'une Aire Marine Protégée (AMP) sur le fonctionnement trophique d'un écosystème written by Mathieu Colleter and published by . This book was released on 2010 with total page 41 pages. Available in PDF, EPUB and Kindle. Book excerpt: Les écosystèmes marins ont connu de profonds bouleversements durant les dernières décennies, et ce notamment par une augmentation de la pression anthropique. La pêche a un impact direct sur les ressources, mais également indirect via les réseaux trophiques. Face à ce constat alarmant, de nombreux Etats se sont engagés à mettre en place une Approche Ecosystémique des Pêches (AEP) afin de mieux gérer les ressources en prenant en compte les impacts anthropiques sur l'ensemble des compartiments d'un écosystème. Au sein de cette politique de gestion, l'utilisation des Aires Marines Protégées (AMP) pour sauvegarder et gérer les écosystèmes s'est imposée comme un outil efficace. Cependant, l'intérêt des AMP comme outil de gestion des stocks halieutiques, et comme méthode de minimisation de l'impact de la pêche à l'échelle d'un écosystème global, reste mal connu. L'objectif de cette étude, menée dans le cadre du projet de recherche AMPHORE, est d'évaluer l'impact de la mise en place d'une AMP sur le fonctionnement trophique de l'écosystème du bolong de Bamboung (Sine-Saloum, Sénégal). Cette zone fait l'objet d'un suivi scientifique depuis 2003, dernière année où la pêche était autorisée. Dans un premier temps, un modèle trophodynamique Ecopath est construit pour l'année 2003. Ce modèle de référence permet une synthèse cohérente du fonctionnement trophique de l'écosystème. Puis des séries d'indices d'abondance sont calculées grâce aux données de pêche expérimentale, nous permettant de construire des modèles dérivés pour l'année 2008 et le Sangako, bolong similaire mais pêché. Nous cherchons ensuite à mesurer l'effet réserve en simulant, à l'aide des routines EcoTroph, différents scénarii de pêche, et en quantifiant leurs effets sur les biomasses et la biodiversité trophique de l'écosystème. Enfin, une analyse de sensibilité est menée.
Book Synopsis Evaluation de l'efficacité des AMP par modélisation du fonctionnement trophique de l'écosystème by : Audrey Valls
Download or read book Evaluation de l'efficacité des AMP par modélisation du fonctionnement trophique de l'écosystème written by Audrey Valls and published by . This book was released on 2009 with total page 35 pages. Available in PDF, EPUB and Kindle. Book excerpt: Les Aires Marines Protégées (AMP) sont considérées comme un outil majeur pour la gestion des stocks halieutiques dans le cadre de l'Approche Ecosystémique des Pêches. Cependant, les gestionnaires disposent assez rarement d'une évaluation objective de l'efficacité de ces AMP d'un point de vue halieutique. L'objectif de cette étude, menée dans le cadre du projet de recherche AMPHORE, est d'évaluer l'impact de l'AMP du Parc national de Port-Cros, en Méditerranée, sur le fonctionnement trophique de l'écosystème sous-jacent. Cette zone protégée dispose d'une importante biodiversité et fait l'objet d'un suivi scientifique, approfondi et ancien, de l'essentiel de ses compartiments biologiques et des activités humaines de prélèvement qui y sont pratiquées. Dans un premier temps, un modèle trophodynamique Ecopath est construit, visant à proposer une synthèse cohérente des connaissances acquises sur le fonctionnement de cette aire marine protégée. Ce modèle compte 41 groupes, dont 18 groupes de poissons. Il repose sur des données provenant de comptages visuels en plongée, de chalutages et d'analyses de contenus stomacaux. Nous cherchons ensuite à mesurer l'effet réserve en simulant, à l'aide des routines EcoTroph, différents scénarios de pêche, et en quantifiant leurs effets sur les biomasses et la biodiversité trophique de l'écosystème. Nous nous intéressons enfin à la robustesse de cette démarche de modélisation par une analyse de sensibilité du modèle EcoTroph.
Author :Jessica S. Sanders Publisher :Food & Agriculture Organization of the UN (FAO) ISBN 13 : Total Pages :128 pages Book Rating :4.:/5 (319 download)
Book Synopsis Marine Protected Areas by : Jessica S. Sanders
Download or read book Marine Protected Areas written by Jessica S. Sanders and published by Food & Agriculture Organization of the UN (FAO). This book was released on 2013 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt: The five case studies from Belize, Mauritania, Samoa, Philippines and Japan were prepared as part of a set of 16 studies gathering national experiences from around the world. The studies are intended to ground the FAO Technical Guidelines on Marine Protected Areas (MPAs) and Fisheries1 in practical experience and to inform the use of MPAs globally
Book Synopsis Portugal, the U.S. and NATO. by : Luc Crollen
Download or read book Portugal, the U.S. and NATO. written by Luc Crollen and published by [Louvain] : Leuven University Press. This book was released on 1973 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :Food and Agriculture Organization of the United Nations Publisher :Food & Agriculture Org. ISBN 13 :9251305536 Total Pages :435 pages Book Rating :4.2/5 (513 download)
Book Synopsis Regional Conference on building a future for sustainable small-scale fisheries in the Mediterranean and the Black Sea by : Food and Agriculture Organization of the United Nations
Download or read book Regional Conference on building a future for sustainable small-scale fisheries in the Mediterranean and the Black Sea written by Food and Agriculture Organization of the United Nations and published by Food & Agriculture Org.. This book was released on 2018-10-31 with total page 435 pages. Available in PDF, EPUB and Kindle. Book excerpt: According to the report, the conference focused on the main challenges for the sustainable development of small-scale fisheries, including promoting political commitment and tailored strategies, raising awareness, and sharing knowledge.
Book Synopsis Coral Reefs and Climate Change by : Jonathan Turnbull Phinney
Download or read book Coral Reefs and Climate Change written by Jonathan Turnbull Phinney and published by American Geophysical Union. This book was released on 2006-01-10 with total page 251 pages. Available in PDF, EPUB and Kindle. Book excerpt: Published by the American Geophysical Union as part of the Coastal and Estuarine Studies, Volume 61. The effects of increased atmospheric carbon dioxide and related climate change on shallow coral reefs are gaining considerable attention for scientific and economic reasons worldwide. Although increased scientific research has improved our understanding of the response of coral reefs to climate change, we still lack key information that can help guide reef management. Research and monitoring of coral reef ecosystems over the past few decades have documented two major threats related to increasing concentrations of atmospheric CO2: (1) increased sea surface temperatures and (2) increased seawater acidity (lower pH). Higher atmospheric CO2 levels have resulted in rising sea surface temperatures and proven to be an acute threat to corals and other reef-dwelling organisms. Short periods (days) of elevated sea surface temperatures by as little as 1–2°C above the normal maximum temperature has led to more frequent and more widespread episodes of coral bleaching-the expulsion of symbiotic algae. A more chronic consequence of increasing atmospheric CO2 is the lowering of pH of surface waters, which affects the rate at which corals and other reef organisms secrete and build their calcium carbonate skeletons. Average pH of the surface ocean has already decreased by an estimated 0.1 unit since preindustrial times, and will continue to decline in concert with rising atmospheric CO2. These climate-related Stressors combined with other direct anthropogenic assaults, such as overfishing and pollution, weaken reef organisms and increase their susceptibility to disease.
Book Synopsis Basic Technics in Ecological Farming / Techniques de Base en Agriculture Biologique / Grundsätzliche Verfahren der ökologischen Landwirtschaft / Le Maintien de la Fertilité des Sols / The Maintenance of Soil Fertility / Die Erhaltung der Bodenfruchtbarkeit by : Stuart Hill
Download or read book Basic Technics in Ecological Farming / Techniques de Base en Agriculture Biologique / Grundsätzliche Verfahren der ökologischen Landwirtschaft / Le Maintien de la Fertilité des Sols / The Maintenance of Soil Fertility / Die Erhaltung der Bodenfruchtbarkeit written by Stuart Hill and published by Birkhäuser. This book was released on 2013-12-14 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Marine Protected Areas by : Joachim Claudet
Download or read book Marine Protected Areas written by Joachim Claudet and published by . This book was released on 2011-09-29 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides regional and global perspectives on the role of Marine Protected Areas in the restoration and conservation of biodiversity.
Book Synopsis The Mediterranean region under climate change by : Collectif
Download or read book The Mediterranean region under climate change written by Collectif and published by IRD Éditions. This book was released on 2018-11-19 with total page 736 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book has been published by Allenvi (French National Alliance for Environmental Research) to coincide with the 22nd Conference of Parties to the United Nations Framework Convention on Climate Change (COP22) in Marrakesh. It is the outcome of work by academic researchers on both sides of the Mediterranean and provides a remarkable scientific review of the mechanisms of climate change and its impacts on the environment, the economy, health and Mediterranean societies. It will also be valuable in developing responses that draw on “scientific evidence” to address the issues of adaptation, resource conservation, solutions and risk prevention. Reflecting the full complexity of the Mediterranean environment, the book is a major scientific contribution to the climate issue, where various scientific considerations converge to break down the boundaries between disciplines.
Book Synopsis State of the World's Oceans by : Michelle Allsopp
Download or read book State of the World's Oceans written by Michelle Allsopp and published by Springer Science & Business Media. This book was released on 2008-12-16 with total page 262 pages. Available in PDF, EPUB and Kindle. Book excerpt: The world’s oceans cover 70% of the earth’s surface and are home to a myriad of amazing and beautiful creatures. However, the biodiversity of the oceans is incre- ingly coming under serious threat from many human activities including overfi- ing, use of destructive fishing methods, pollution and commercial aquaculture. In addition, climate change is already having an impact on some marine ecosystems. This book discusses some of the major threats facing marine ecosystems by cons- ering a range of topics, under chapters discussing biodiversity (Chapter 1), fisheries (Chapter 2), aquaculture (Chapter 3), pollution (Chapter 4) and the impacts of increasing greenhouse gas emissions (Chapter 5). It goes on to explore solutions to the problems by discussing equitable and sustainable management of the oceans (Chapter 6) and protecting marine ecosystems using marine reserves (Chapter 7). Presently, 76% of the oceans are fully or over-exploited with respect to fishing, and many species have been severely depleted. It is abundantly clear that, in general, current fisheries management regimes are to blame for much of the widespread degradation of the oceans. Many policy-makers and scientists now agree that we must adopt a radical new approach to managing the seas – one that is precautionary in nature and has protection of the whole marine ecosystem as its primary objective. This ‘ecosystem-based approach’ is vital if we are to ensure the health of our oceans for future generations.
Book Synopsis Tropical Marine Plants of Palau by : Hideo Ohba
Download or read book Tropical Marine Plants of Palau written by Hideo Ohba and published by . This book was released on 2007 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Global Atlas of Marine Fisheries by : Daniel Pauly
Download or read book Global Atlas of Marine Fisheries written by Daniel Pauly and published by Island Press. This book was released on 2016-10-06 with total page 519 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Global Atlas of Marine Fisheries is the first and only book to provide accurate, country-by-country fishery catch data. This groundbreaking information has been gathered from independent sources by the world's foremost fisheries experts. Edited by Daniel Pauly and Dirk Zeller of the Sea Around Us Project, the Atlas includes one-page reports on 273 countries and their territories, plus fourteen topical global chapters. Each national report describes the current state of the country's fishery; the policies, politics, and social factors affecting it; and potential solutions. The global chapters address cross-cutting issues, from the economics of fisheries to the impacts of mariculture. Extensive maps and graphics offer attractive and accessible visual representations.
Book Synopsis Fully-protected Marine Reserves by : Callum M. Roberts
Download or read book Fully-protected Marine Reserves written by Callum M. Roberts and published by . This book was released on 2000 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Tourism Encounter by : Florence Babb
Download or read book The Tourism Encounter written by Florence Babb and published by Stanford University Press. This book was released on 2010-08-30 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt: In recent decades, several Latin American nations have experienced political transitions that have caused a decline in tourism. In spite of—or even because of—that history, these areas are again becoming popular destinations. This work reveals that in post-conflict nations, tourism often takes up where social transformation leaves off and sometimes benefits from formerly off-limits status. Comparing cases in Cuba, Mexico, Nicaragua, and Peru, Babb shows how tourism is a major force in remaking transitional nations. While tourism touts scenic beauty and colonial charm, it also capitalizes on the desire for a brush with recent revolutionary history. In the process, selective histories are promoted and nations remade. This work presents the diverse stories of those linked to the trade and reveals how interpretations of the past and desires for the future coincide and collide in the global marketplace of tourism.
Book Synopsis Coasts Under Changing Climate: Observations and Modeling by : Rafael Almar
Download or read book Coasts Under Changing Climate: Observations and Modeling written by Rafael Almar and published by Frontiers Media SA. This book was released on 2022-01-04 with total page 197 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Cassava-Mealybug Interactions by : Paul-André Calatayud
Download or read book Cassava-Mealybug Interactions written by Paul-André Calatayud and published by IRD Editions. This book was released on 2006 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt: Most basic information on plant-mealybug interactions during the last decade has come from research on the cassava Manihot esculenta Crantz (Euphorbiaceae) system with two mealybug species, namely Phenacoccus manihoti Matile-Ferrero and Phenacoccus herreni Cox and Williams (Sternorrhyncha: Pseudococcidae). Both these insects cause severe damage to cassava in Africa and South America, respectively. This book reviews these interactions (plant selection by the insects, nutritional requirements
Book Synopsis Marine and Coastal Protected Areas by : Rodney V. Salm
Download or read book Marine and Coastal Protected Areas written by Rodney V. Salm and published by IUCN. This book was released on 2000 with total page 406 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is a new edition of the classic textbook on marine protected area (MPA) management in the tropics, originally produced as an output of the Bali World Parks Congress in 1982. Approaches to planning and managing MPAs have evolved considerably. Major advances include innovative financing mechanisms, partnerships with the private sector and NGOs, and collaborative management between government and coastal communities. These advances have brought new approaches for MPA establishment and management that are more participatory, involving communities through interaction and collaboration rather than prescription. With new case studies and illustrations, the guide comes in a water-resistant cover for field use. It is intended for those who plan individual and/or national MPA systems and gives philosophical context for MPAs along with some basic principles and approaches.
