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Yousef S. Al-Hafedh

Bio: Yousef S. Al-Hafedh is an academic researcher from King Abdulaziz City for Science and Technology. The author has contributed to research in topics: Nile tilapia & Fish farming. The author has an hindex of 9, co-authored 17 publications receiving 2343 citations.

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Journal ArticleDOI
Sandra Díaz1, Sebsebe Demissew2, Julia Carabias3, Carlos Alfredo Joly4, Mark Lonsdale, Neville Ash5, Anne Larigauderie, Jay Ram Adhikari, Salvatore Arico6, András Báldi, Ann M. Bartuska7, Ivar Andreas Baste, Adem Bilgin, Eduardo S. Brondizio8, Kai M. A. Chan9, Viviana E. Figueroa, Anantha Kumar Duraiappah, Markus Fischer, Rosemary Hill10, Thomas Koetz, Paul Leadley11, Philip O'b. Lyver12, Georgina M. Mace13, Berta Martín-López14, Michiko Okumura5, Diego Pacheco, Unai Pascual15, Edgar Selvin Pérez, Belinda Reyers16, Eva Roth17, Osamu Saito18, Robert J. Scholes19, Nalini Sharma5, Heather Tallis20, Randolph R. Thaman21, Robert T. Watson22, Tetsukazu Yahara23, Zakri Abdul Hamid, Callistus Akosim, Yousef S. Al-Hafedh24, Rashad Allahverdiyev, Edward Amankwah, T. Stanley Asah25, Zemede Asfaw2, Gabor Bartus26, Anathea L. Brooks6, Jorge Caillaux27, Gemedo Dalle, Dedy Darnaedi, Amanda Driver (Sanbi), Gunay Erpul28, Pablo Escobar-Eyzaguirre, Pierre Failler29, Ali Moustafa Mokhtar Fouda, Bojie Fu30, Haripriya Gundimeda31, Shizuka Hashimoto32, Floyd Homer, Sandra Lavorel33, Gabriela Lichtenstein34, William Armand Mala35, Wadzanayi Mandivenyi, Piotr Matczak36, Carmel Mbizvo, Mehrasa Mehrdadi, Jean Paul Metzger37, Jean Bruno Mikissa38, Henrik Moller39, Harold A. Mooney40, Peter J. Mumby41, Harini Nagendra42, Carsten Nesshöver43, Alfred Oteng-Yeboah44, György Pataki45, Marie Roué, Jennifer Rubis6, Maria Schultz46, Peggy Smith47, Rashid Sumaila9, Kazuhiko Takeuchi18, Spencer Thomas, Madhu Verma48, Youn Yeo-Chang49, Diana Zlatanova50 
National University of Cordoba1, Addis Ababa University2, National Autonomous University of Mexico3, State University of Campinas4, United Nations Environment Programme5, UNESCO6, United States Department of Agriculture7, Indiana University8, University of British Columbia9, Commonwealth Scientific and Industrial Research Organisation10, University of Paris-Sud11, Landcare Research12, University College London13, Autonomous University of Madrid14, University of Cambridge15, Council for Scientific and Industrial Research16, University of Southern Denmark17, United Nations University18, Virginia Tech College of Natural Resources and Environment19, The Nature Conservancy20, University of the South Pacific21, University of East Anglia22, Kyushu University23, King Abdulaziz City for Science and Technology24, University of Washington25, Budapest University of Technology and Economics26, Environmental Law Institute27, Ankara University28, University of Portsmouth29, Chinese Academy of Sciences30, Indian Institute of Technology Bombay31, Kyoto University32, Joseph Fourier University33, National Scientific and Technical Research Council34, University of Yaoundé35, Polish Academy of Sciences36, University of São Paulo37, École Normale Supérieure38, University of Otago39, Stanford University40, University of Queensland41, Azim Premji University42, Helmholtz Centre for Environmental Research - UFZ43, University of Ghana44, Corvinus University of Budapest45, Stockholm University46, Lakehead University47, Indian Institute of Forest Management48, Seoul National University49, Sofia University50
TL;DR: The first public product of the Intergovernmental Platform on Biodiversity and Ecosystem Services (IPBES) is its Conceptual Framework as discussed by the authors, which will underpin all IPBES functions and provide structure and comparability to the syntheses that will produce at different spatial scales, on different themes, and in different regions.

1,585 citations

Journal ArticleDOI
TL;DR: In this paper, the authors present the rationale for the inclusive valuation of nature's contributions to people (NCP) in decision making, as well as broad methodological steps for doing so, and argue that transformative practices aiming at sustainable futures would benefit from embracing such diversity, which require recognizing and addressing power relationships across stakeholder groups that hold different values on human nature-relations and NCP.

985 citations

Journal ArticleDOI
TL;DR: An indoor aquaponic system was operated for maximizing water reuse and year-round intensive food production (Nile tilapia, Oreochromis niloticus, and leaf lettuce) at different fish feed to plants ratios.
Abstract: An indoor aquaponic system (i.e., the integration of fish culture with hydroponic plant production in a recirculating setup) was operated for maximizing water reuse and year-round intensive food production (Nile tilapia, Oreochromis niloticus, and leaf lettuce) at different fish feed to plants ratios. The system consisted of a fish culture component, solid removal component, and hydroponic component comprising six long channels with floating styrofoam rafts for holding plants. Fish culture effluents flowed by gravity from the fish culture component to the solid removal component and then to the hydroponic component. Effluents were collected in a sump from which a 1-horsepower in-line pump recirculated the water back to the fish culture tanks at a rate of about 250 L/min. The hydroponic component performed as biofilter and effectively managed the water quality. Fish production was staggered to harvest one of the four fish tanks at regular intervals when fish attained a minimum weight of 250 g. Out of the total eight harvests in 13 mo, net fish production per harvest averaged 33.5 kg/m3 of water with an overall water consumption of 320 L/kg of fish produced along with the production of leaf lettuce at 42 heads/m2 of hydroponic surface area. Only 1.4% of the total system water was added daily to compensate the evaporation and transpiration losses. A ratio of 56 g fish feed/m2 of hydroponic surface effectively controlled nutrient buildup in the effluents. However, plant density could be decreased from 42 to 25–30 plants/m2 to produce a better quality lettuce.

130 citations

Journal ArticleDOI
TL;DR: Three kinds of locally available plastic biofilter media with different configurations (plastic rolls, PVC pipes and scrub pads) were evaluated for their efficiency in organic waste removal from the effluents of an intensive recirculating tilapia culture system.

64 citations


Cited by
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TL;DR: In this paper, the authors trace the history leading up to these publications and the subsequent debates, research, institutions, policies, on-the-ground actions, and controversies they triggered.
Abstract: It has been 20 years since two seminal publications about ecosystem services came out: an edited book by Gretchen Daily and an article in Nature by a group of ecologists and economists on the value of the world’s ecosystem services. Both of these have been very highly cited and kicked off an explosion of research, policy, and applications of the idea, including the establishment of this journal. This article traces the history leading up to these publications and the subsequent debates, research, institutions, policies, on-the-ground actions, and controversies they triggered. It also explores what we have learned during this period about the key issues: from definitions to classification to valuation, from integrated modelling to public participation and communication, and the evolution of institutions and governance innovation. Finally, it provides recommendations for the future. In particular, it points to the weakness of the mainstream economic approaches to valuation, growth, and development. It concludes that the substantial contributions of ecosystem services to the sustainable wellbeing of humans and the rest of nature should be at the core of the fundamental change needed in economic theory and practice if we are to achieve a societal transformation to a sustainable and desirable future.

1,514 citations

Journal ArticleDOI
19 Jan 2018-Science
TL;DR: The notion of nature's contributions to people (NCP) was introduced by the Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services (IPBES) as mentioned in this paper, a joint global effort by governments, academia, and civil society to assess and promote knowledge of Earth's biodiversity and ecosystems and their contribution to human societies.
Abstract: A major challenge today and into the future is to maintain or enhance beneficial contributions of nature to a good quality of life for all people. This is among the key motivations of the Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services (IPBES), a joint global effort by governments, academia, and civil society to assess and promote knowledge of Earth's biodiversity and ecosystems and their contribution to human societies in order to inform policy formulation. One of the more recent key elements of the IPBES conceptual framework ( 1 ) is the notion of nature's contributions to people (NCP), which builds on the ecosystem service concept popularized by the Millennium Ecosystem Assessment (MA) ( 2 ). But as we detail below, NCP as defined and put into practice in IPBES differs from earlier work in several important ways. First, the NCP approach recognizes the central and pervasive role that culture plays in defining all links between people and nature. Second, use of NCP elevates, emphasizes, and operationalizes the role of indigenous and local knowledge in understanding nature's contribution to people.

1,470 citations

Journal ArticleDOI
TL;DR: In this paper, the authors present the rationale for the inclusive valuation of nature's contributions to people (NCP) in decision making, as well as broad methodological steps for doing so, and argue that transformative practices aiming at sustainable futures would benefit from embracing such diversity, which require recognizing and addressing power relationships across stakeholder groups that hold different values on human nature-relations and NCP.

985 citations

Journal ArticleDOI
13 Dec 2019-Science
TL;DR: The first integrated global-scale intergovernmental assessment of the status, trends, and future of the links between people and nature provides an unprecedented picture of the extent of the authors' mutual dependence, the breadth and depth of the ongoing and impending crisis, and the interconnectedness among sectors and regions.
Abstract: The human impact on life on Earth has increased sharply since the 1970s, driven by the demands of a growing population with rising average per capita income. Nature is currently supplying more materials than ever before, but this has come at the high cost of unprecedented global declines in the extent and integrity of ecosystems, distinctness of local ecological communities, abundance and number of wild species, and the number of local domesticated varieties. Such changes reduce vital benefits that people receive from nature and threaten the quality of life of future generations. Both the benefits of an expanding economy and the costs of reducing nature's benefits are unequally distributed. The fabric of life on which we all depend-nature and its contributions to people-is unravelling rapidly. Despite the severity of the threats and lack of enough progress in tackling them to date, opportunities exist to change future trajectories through transformative action. Such action must begin immediately, however, and address the root economic, social, and technological causes of nature's deterioration.

913 citations

Journal ArticleDOI
Jingjing Liang1, Thomas W. Crowther2, Nicolas Picard3, Susan K. Wiser4, Mo Zhou1, Giorgio Alberti5, Ernst Detlef Schulze6, A. David McGuire7, Fabio Bozzato, Hans Pretzsch8, Sergio de-Miguel, Alain Paquette9, Bruno Hérault10, Michael Scherer-Lorenzen11, Christopher B. Barrett12, Henry B. Glick2, Geerten M. Hengeveld13, Gert-Jan Nabuurs13, Sebastian Pfautsch14, Helder Viana15, Helder Viana16, Alexander Christian Vibrans, Christian Ammer17, Peter Schall17, David David Verbyla7, N. M. Tchebakova18, Markus Fischer19, James V. Watson1, Han Y. H. Chen20, Xiangdong Lei, Mart-Jan Schelhaas13, Huicui Lu13, Damiano Gianelle, Elena I. Parfenova18, Christian Salas21, Eungul Lee1, Boknam Lee22, Hyun-Seok Kim, Helge Bruelheide23, David A. Coomes24, Daniel Piotto, Terry Sunderland25, Terry Sunderland26, Bernhard Schmid27, Sylvie Gourlet-Fleury, Bonaventure Sonké28, Rebecca Tavani3, Jun Zhu29, Susanne Brandl8, Jordi Vayreda, Fumiaki Kitahara, Eric B. Searle20, Victor J. Neldner30, Michael R. Ngugi30, Christopher Baraloto31, Christopher Baraloto32, Lorenzo Frizzera, Radomir Bałazy33, Jacek Oleksyn34, Jacek Oleksyn35, Tomasz Zawiła-Niedźwiecki36, Olivier Bouriaud37, Filippo Bussotti38, Leena Finér, Bogdan Jaroszewicz39, Tommaso Jucker24, Fernando Valladares40, Fernando Valladares41, Andrzej M. Jagodziński35, Pablo Luis Peri42, Pablo Luis Peri43, Pablo Luis Peri44, Christelle Gonmadje28, William Marthy45, Timothy G. O'Brien45, Emanuel H. Martin46, Andrew R. Marshall47, Francesco Rovero, Robert Bitariho, Pascal A. Niklaus27, Patricia Alvarez-Loayza48, Nurdin Chamuya49, Renato Valencia50, Frédéric Mortier, Verginia Wortel, Nestor L. Engone-Obiang51, Leandro Valle Ferreira52, David E. Odeke, R. Vásquez, Simon L. Lewis53, Simon L. Lewis54, Peter B. Reich14, Peter B. Reich34 
West Virginia University1, Yale University2, Food and Agriculture Organization3, Landcare Research4, University of Udine5, Max Planck Society6, University of Alaska Fairbanks7, Technische Universität München8, Université du Québec à Montréal9, University of the French West Indies and Guiana10, University of Freiburg Faculty of Biology11, Cornell University12, Wageningen University and Research Centre13, University of Sydney14, University of Trás-os-Montes and Alto Douro15, Polytechnic Institute of Viseu16, University of Göttingen17, Russian Academy of Sciences18, Oeschger Centre for Climate Change Research19, Lakehead University20, University of La Frontera21, Seoul National University22, Martin Luther University of Halle-Wittenberg23, University of Cambridge24, James Cook University25, Center for International Forestry Research26, University of Zurich27, University of Yaoundé I28, University of Wisconsin-Madison29, Queensland Government30, Institut national de la recherche agronomique31, Florida International University32, Forest Research Institute33, University of Minnesota34, Polish Academy of Sciences35, Warsaw University of Life Sciences36, Ştefan cel Mare University of Suceava37, University of Florence38, University of Warsaw39, Spanish National Research Council40, King Juan Carlos University41, National Scientific and Technical Research Council42, International Trademark Association43, National University of Austral Patagonia44, Wildlife Conservation Society45, College of African Wildlife Management46, University of York47, Durham University48, Ontario Ministry of Natural Resources49, Pontificia Universidad Católica del Ecuador50, Centre national de la recherche scientifique51, Museu Paraense Emílio Goeldi52, University College London53, University of Leeds54
14 Oct 2016-Science
TL;DR: A consistent positive concave-down effect of biodiversity on forest productivity across the world is revealed, showing that a continued biodiversity loss would result in an accelerating decline in forest productivity worldwide.
Abstract: The biodiversity-productivity relationship (BPR) is foundational to our understanding of the global extinction crisis and its impacts on ecosystem functioning. Understanding BPR is critical for the accurate valuation and effective conservation of biodiversity. Using ground-sourced data from 777,126 permanent plots, spanning 44 countries and most terrestrial biomes, we reveal a globally consistent positive concave-down BPR, showing that continued biodiversity loss would result in an accelerating decline in forest productivity worldwide. The value of biodiversity in maintaining commercial forest productivity alone-US$166 billion to 490 billion per year according to our estimation-is more than twice what it would cost to implement effective global conservation. This highlights the need for a worldwide reassessment of biodiversity values, forest management strategies, and conservation priorities.

889 citations