Download or read book Rapport Du Groupe de Travail de la FAO Sur L valuation Des Petits P lagiques Au Large de L Afrique Nord occidentale written by FAO Working Group on the Assessment of Small Pelagic Fish off Northwest Africa. Meeting and published by Food & Agriculture Organization of the UN (FAO). This book was released on 2011 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: FRIDTJOF NANSEN and the national research vessels AL AMIR, AL AWAM and ITAF DEME, and in 2007 and 2008 these national research vessels carried out a coordinated regional survey during the months of October-December. It should be noted that during the 2008 survey, the Gambia was not covered. The 2009 survey, hence, only provides a partial coverage of the region and estimates had to be made for Senegal and the Gambia. The Nansen series continues with a converted value from the national research vessels to the "Nansen Value". Although important changes were observed in the abundance and exploitation level for some of the stocks, the overall general situation with respect to the state of the different stocks was found to be similar to that of 2009, with the exception of the Atlantic horse mackerel (Trachurus trachurus), which this year was considered overexploited.
Download or read book Report of the FAO Working Group on the Assessment of Small Pelagic Fish Off Northwest Africa written by Working Group on the Assessment of Small Pelagic Fish Off Northwest Africa Food and Agriculture Organization and published by . This book was released on 2013 with total page 253 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Rapport Du Groupe de Travail de la FAO Sur L valuation Des Petits P lagiques Au Large de L Afrique Nord occidentale written by FAO Working Group on the Assessment of Small Pelagic Fish off Northwest Africa. Meeting and published by Food & Agriculture Org.. This book was released on 2007 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Group assessed the status of the small pelagic resources in Northwest Africa and make projections on the development of the status of the stocks and on future effort and catch levels. As a precautionary measure, the catch level for this species should not exceed the average over the last three years of 115 000 tonnes. For bonga, the recommendation from 2006 is maintained as no new information is available on this species, and the Working Group recommended that the catch level should not exceed 42 000 tonnes. - Le Groupe a examine l'etat actuel des ressources de petits pelagiques en Afrique nord occidentale en fait des projections sur le developpement, l'effort futur et les niveaux de capture. Comme mesure de precaution, le niveau de capture pour cette espece ne devrait pas depasser la moyenne de 115 000 tonnes des trois dernieres annees. Pour l'ethmalose, la recommandation de 2006 est maintenue car aucune information nouvelle n'est disponible pour cette espece et le Groupe de travail a recommande que le niveau de capture ne depasse pas 42 000 tonnes"
Download or read book Rapport Du Groupe de Travail de la FAO Sur L valuation Des Petits P lagiques Au Large de L Afrique Nord occidentale written by Food and Agriculture Organization of the United Nations. Working Group on the Assessment of Small Pelagic Fish off Northwest Africa. Meeting and published by Food & Agriculture Org.. This book was released on 2001 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Rapport Du Groupe de Travail de la FAO Sur L valuation Des Petits P lagiques Au Large de L Afrique Nord occidentale written by Food and Agriculture Organization of the United Nations and published by Fao Fisheries and Aquaculture. This book was released on 2008 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt: The eighth meeting of the Group assessed the status of the small pelagic resources in Northwest Africa and made projections on the development of the status of the stocks and on future effort and catch levels. With the exception of sardine in zone c the other small pelagic fish stocks in the region are considered to be fully or overexploited. The advice for the stocks are given in relation to the agreed reference points and on basis of the projections for the next five years.
Download or read book Rapport Du Groupe de Travail de la FAO Sur L valuation Des Petits P lagiques Au Large de L Afrique Nord occidentale written by and published by Food & Agriculture Org.. This book was released on 2002 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt: During this year's meeting the emphasis was on updating the database as well as knowledge of assessment methods within the group. At the beginning of the meeting a two-day course in assessment methodology was held. A separate section is devoted to each main group of species (sardine, sardinellas, horse mackerels and mackerel). For each of these, actualized information until 2001 is given on stock identity, the fisheries, catch and effort, biological data and abundance indices.--Publisher's description.
Download or read book Rapport Du Groupe de Travail de la FAO Sur L valuation Des Petits P lagiques Au Large de L Afrique Nord occidentale written by FAO Working Group on the Assessment of Small Pelagic Fish off Northwest Africa. Meeting and published by Food & Agriculture Organization of the UN (FAO). This book was released on 2011 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Working Group used dynamic production models for all stocks. An index of environmental quality has been introduced in the production models since 2005. For most of the stocks, the time series from the acoustic surveys with the R/V DR. FRIDTJOF NANSEN and national research vessels are used as the index of abundance in the assessments and future assessments would therefore depend on the continuation of the time series by the local research vessels. The Norwegian research vessel, DR. FRIDTJOF NANSEN surveyed the subregion from 1995 to 2006, carrying out acoustic surveys during the months October-December each year. In addition, from 2001 to 2003, the vessel carried out acoustic surveys covering the same area from May to July. From 2004 to 2006, intercalibrations and parallel surveys were carried out between R/V DR.
Download or read book Terra 2008 written by Leslie Rainer and published by Getty Publications. This book was released on 2011-06-14 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt: Earthen architecture constitutes one of the most diverse forms of cultural heritage and one of the most challenging to preserve. It dates from all periods and is found on all continents but is particularly prevalent in Africa, where it has been a building tradition for centuries. Sites range from ancestral cities in Mali to the palaces of Abomey in Benin, from monuments and mosques in Iran and Buddhist temples on the Silk Road to Spanish missions in California. This volume's sixty-four papers address such themes as earthen architecture in Mali, the conservation of living sites, local knowledge systems and intangible aspects, seismic and other natural forces, the conservation and management of archaeological sites, research advances, and training.
Download or read book Water Heritage written by Willem Willems and published by . This book was released on 2017-01-15 with total page 434 pages. Available in PDF, EPUB and Kindle. Book excerpt: Water is vital for life, and its availability has been a concern for mankind throughout the ages. Its presence has always been ascertained in a variety of ways and the development of human society everywhere is connected with various forms of water management. Man also needed to manage water to find protection from its dangers and the need for that is increasing. In the coming decades, the impact of climate change is expected to intensify floods and droughts, affect groundwater resources, raise sea levels, increase pollution and enhance the frequency and magnitude of disasters. Societies around the world are challenged to adapt to these threats to ensure water security, economic prosperity and environmental and cultural sustainability. This book deals with the heritage of water management and the use that was made of water, as well as the impact of water management on heritage. An example of the former may be an ancient irrigation system in the Filipines or in the Middle East that still functions today, while the latter may reflect the importance of maintaining groundwater levels for the preservation of organic remains on archaeological sites or of wooden piles underneath standing buildings. In either case the papers in this book reflect the dynamic nature of water, and hence the equally dynamic relation between water management and heritage. This publication follows up on a Heritage and Water conference in Amsterdam, the first of its kind. Its main purpose is to credibly present the importance and value of heritage and historical experience for water and sustainable development, and vice versa, present the importance of water management for the protection of heritage. It presents evolving insights and concepts about Water and about Heritage from a variety of disciplines, policy and public perspectives illustrated with cases studies and aims to connect decision makers with experts such as engineers, archaeologists, historians, geographers, ecologist and landscape architects
Download or read book Magmatism and the Causes of Continental Break up written by Bryan C. Storey and published by Geological Society of America. This book was released on 1992 with total page 426 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biodiversity and Sustainable Development written by Rabindra Nath Pati and published by . This book was released on 2010 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Papers presented at the First Global Summit on Sustainable Development and Biodiversity, held at Raipur during 7-9 February 2009.
Download or read book Conservation de la For t Dense en Afrique Centrale Et de L Ouest written by Kevin M. Cleaver and published by World Bank Publications. This book was released on 1992 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume brings together selected papers presented and discussed at the Conference on Conservation of West and Central African Rainforests, held in Abidjan, November 5-9, 1990.
Download or read book Governing Africa s Forests in a Globalized World written by Laura Anne German and published by Routledge. This book was released on 2009-12-01 with total page 435 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many countries around the world are engaged in decentralization processes, and most African countries face serious problems with forest governance, from benefits sharing to illegality and sustainable forest management. This book summarizes experiences to date on the extent and nature of decentralization and its outcomes - most of which suggest an underperformance of governance reforms - and explores the viability of different governance instruments in the context of weak governance and expanding commercial pressures over forests. Findings are grouped into two thematic areas: decentralization, livelihoods and sustainable forest management; and international trade, finance and forest sector governance reforms. The authors examine diverse forces shaping the forest sector, including the theory and practice of decentralization, usurpation of authority, corruption and illegality, inequitable patterns of benefits capture and expansion of international trade in timber and carbon credits, and discuss related outcomes on livelihoods, forest condition and equity. The book builds on earlier volumes exploring different dimensions of decentralization and perspectives from other world regions, and distills dimensions of forest governance that are both unique to Africa and representative of broader global patterns. The authors ground their analysis in relevant theory while drawing out implications of their findings for policy and practice.
Download or read book Useful Plants of Ghana written by Daniel K. Abbiw and published by . This book was released on 1990 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aims to document, as much as possible, the useful plant material of Ghana. Divided into subjects such as food, fuel, potions and medicines, construction and weeds, the plants are listed according to their scientific and Ghanaian common names, as well as by their English names, if available.
Download or read book Saints of the Atlas written by Ernest Gellner and published by ACLS History E-Book Project. This book was released on 2008-11 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Heritage Sites of Astronomy and Archaeoastronomy in the Context of the UNESCO World Heritage Convention written by Clive L. N. Ruggles and published by . This book was released on 2017-11-30 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: This joint venture between ICOMOS, the advisory body to UNESCO on cultural sites, and the International Astronomical Union is the second volume in an ongoing exploration of themes and issues relating to astronomical heritage in particular and to science and technology heritage in general. It examines a number of key questions relating to astronomical heritage sites and their potential recognition as World Heritage, attempting to identify what might constitute "outstanding universal value" in relation to astronomy. "Heritage Sites of Astronomy and Archaeoastronomy--Volume 2" represents the culmination of several years' work to address some of the most challenging issues raised in the first ICOMOS-IAU Thematic Study, published in 2010. These include the recognition and preservation of the value of dark skies at both cultural and natural sites and landscapes; balancing archaeoastronomical considerations in the context of broader archaeological and cultural values; the potential for serial nominations; and management issues such as preserving the integrity of astronomical sightlines through the landscape.Its case studies are developed in greater depth than those in volume 1, and generally structured as segments of draft nomination dossiers. They include seven-stone antas (prehistoric dolmens) in Portugal and Spain, the thirteen towers of Chankillo in Peru, the astronomical timing of irrigation in Oman, Pic du Midi de Bigorre Observatory in France, Baikonur Cosmodrome in Kazakhstan, and Aoraki-Mackenzie International Dark Sky Reserve in New Zealand. A case study on Stonehenge, already a World Heritage Site, focuses on preserving the integrity of the solstitial sightlines.As for the first ICOMOS-IAU Thematic Study, a international team of authors including historians, astronomers and heritage professionals is led by Professor Clive Ruggles for the IAU and Professor Michel Cotte for ICOMOS.
Download or read book Report of the FAO CECAF Working Group on the Assessment of Small Pelagic Fish Subgroup South Elmina Ghana 12 20 September 2018 written by Food and Agriculture Organization of the United Nations and published by Food & Agriculture Org.. This book was released on 2019-07-17 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt: The fourth meeting of the FAO/CECAF Working Group on the Assessment of Small Pelagic Fish – Subgroup South was held in Elmina, Ghana from 12-20 September 2018. The overall objective of the Working Group is to contribute to the improved management of small pelagic resources in West Africa through the assessment of the state of the stocks and fisheries in order to ensure sustainable use of these resources for the benefit of coastal countries. The species assessed by the Working Group were: sardinella (Sardinella aurita and Sardinella maderensis), bonga (Ethmalosa fimbriata), anchovy (Engraulis encrasicolus) and horse mackerel (Trachurus trecae and Decapterus rhonchus), and other Carangidae, in the region between the northern border of Guinea-Bissau and the southern border of Angola. La quatrième réunion du Groupe de travail FAO/COPACE sur l’évaluation des petits pélagiques – Sous-groupe Sud, s’ets tenue à Elmina, Ghana, du 12 au 20 septembre 2018. L’objectif général du Groupe de travail est d’améliorer la gestion des ressources en petits pélagiques en Afrique de l’Ouest grâce à l’évaluation de l’état des stocks et des pêcheries de façon à assurer une utilisation durable de ces ressources au bénéfice des pays côtiers. Les espèces évaluées par le Groupe de travail sont les suivantes: les sardinelles (Sardinella aurita et t Sardinella maderensis), l’ethmalose (Ethmalosa fimbriata), l’anchois (Engraulis encrasicolus) et les chinchards (Trachurus trecae et Decapterus rhonchus) et autres carangidés, dans la région située entre la frontière nord de la Guinée-Bissau et la frontière sud de l’Angola.
