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M I L L E N N I U M E C O S Y S T E M A S S E S S M E N T WASHINGTON COVELO LONDON www.islandpress.org All Island Press books are printed on recycled paper 9 ISBN 1-59726-040-1 781597 260404 90000 Synthesis M I L L E N N I U M E C O S Y S T E M A S S E S S M E N T Synthesis     M I L L E N N I U M E C O S Y S T E M A S S E S S M E N T Secretariat Support Organizations The United Nations Environment Programme (UNEP) coordinates the Millennium Ecosystem Assessment Secretariat, which is based at the following partner institutions: Food and Agriculture Organization of the United Nations, Italy Institute of Economic Growth, India International Maize and Wheat Improvement Center (CIMMYT), Mexico (until 2002 ) Meridian Institute, United States National Institute of Public Health and the Environment (RIVM), Netherlands (until mid-2004 ) Scientific Committee on Problems of the Environment (SCOPE), France UNEP-World Conservation Monitoring Centre, United Kingdom University of Pretoria, South Africa University of Wisconsin-Madison, United States World Resources Institute (WRI), United States WorldFish Center, Malaysia Maps and graphics: Emmanuelle Bournay and Philippe Rekacewicz, UNEP/GRID-Arendal, Norway The production of maps and graphics was made possible by the generous support of the Ministry of Foreign Affairs of Norway and UNEP/GRID-Arendal. Photos: Front cover: ■ Tran Thi Hoa, The World Bank Back cover: ■ David Woodfall/WWI/Peter Arnold, Inc. Harold A. Mooney (co-chair), Stanford University, United States Angela Cropper (co-chair), The Cropper Foundation, Trinidad and Tobago Doris Capistrano, Center for Inter- national Forestry Research, Indonesia Stephen R. Carpenter, University of Wisconsin-Madison, United States Kanchan Chopra, Institute of Economic Growth, India Partha Dasgupta, University of Cambridge, United Kingdom Rik Leemans, Wageningen University, Netherlands Robert M. May, University of Oxford, United Kingdom Prabhu Pingali, Food and Agriculture Organization of the United Nations, Italy Rashid Hassan, University of Pretoria, South Africa Cristián Samper, Smithsonian National Museum of Natural History, United States Robert Scholes, Council for Scientific and Industrial Research, South Africa Robert T. Watson, The World Bank, United States (ex officio ) A. H. Zakri, United Nations University, Japan (ex officio ) Zhao Shidong, Chinese Academy of Sciences, China Editorial Board Chairs José Sarukhán, Universidad Nacio- nal Autónoma de México, Mexico Anne Whyte, Mestor Associates Ltd., Canada MA Director Walter V. Reid, Millennium Ecosystem Assessment, Malaysia and United States Millennium Ecosystem Assessment Panel Co-chairs Robert T. Watson, Chief Scientist, The World Bank A.H. Zakri, Director, Institute of Advanced Studies, United Nations University Institutional Representatives Salvatore Arico, Programme Officer, Division of Ecological and Earth Sciences, United Nations Educational, Scientific and Cultural Organization Peter Bridgewater, Secretary General, Ramsar Convention on Wetlands Hama Arba Diallo, Executive Secretary, United Nations Convention to Combat Desertification Adel El-Beltagy, Director General, International Center for Agricultural Research in Dry Areas, Consultative Group on International Agricultural Research Max Finlayson, Chair, Scien- tific and Technical Review Panel, Ramsar Convention on Wetlands Colin Galbraith, Chair, Scientific Council, Convention on Migratory Species Erika Harms, Senior Program Officer for Biodiversity, United Nations Foundation Robert Hepworth, Acting Executive Secretary, Convention on Migratory Species Olav Kjørven, Director, Energy and Environment Group, United Nations Development Programme Kerstin Leitner, Assistant Director-General, Sustainable Development and Healthy Environments, World Health Organization Alfred Oteng-Yeboah, Chair, Subsidiary Body on Scientific, Technical and Techno - logical Advice, Convention on Biological Diversity Christian Prip, Chair, Subsidiary Body on Scientific, Technical and Technological Advice, Convention on Biological Diversity Mario A. Ramos, Biodiversity Program Manager, Global Environment Facility Thomas Rosswall, Executive Director, International Council for Science - ICSU Achim Steiner, Director General, IUCN - The World Conservation Union Halldor Thorgeirsson, Coordinator, United Nations Framework Convention on Climate Change Klaus Töpfer, Executive Director, United Nations Environment Programme Jeff Tschirley, Chief, Environmental and Natural Resources Service, Research, Extension and Training Division, Food and Agriculture Organiza - tion of the United Nations Riccardo Valentini, Chair, Committee on Science and Technology, United Nations Convention to Combat Desertification Hamdallah Zedan, Executive Secretary, Convention on Biological Diversity At-large Members Fernando Almeida, Executive President, Business Council for Sustainable Development-Brazil Phoebe Barnard, Global Invasive Species Programme, South Africa Gordana Beltram, Undersecretary, Ministry of the Environment and Spatial Planning, Slovenia Delmar Blasco, Former Secretary General, Ramsar Convention on Wetlands, Spain Antony Burgmans, Chairman, Unilever N.V., Netherlands Esther Camac-Ramirez, Asociación Ixä Ca Vaá de Desarrollo e Información Indigena, Costa Rica Angela Cropper (ex officio), President, The Cropper Founda - tion, Trinidad and Tobago Partha Dasgupta, Professor, Faculty of Economics and Politics, University of Cambridge, United Kingdom José María Figueres, Fundación Costa Rica para el Desarrollo Sostenible, Costa Rica Fred Fortier, Indigenous Peoples’ Biodiversity Information Network, Canada Mohamed H.A. Hassan, Executive Director, Third World Academy of Sciences for the Developing World, Italy Jonathan Lash, President, World Resources Institute, United States Wangari Maathai, Vice Minister for Environment, Kenya Paul Maro, Professor, Department of Geography, University of Dar es Salaam, Tanzania Harold A. Mooney (ex officio), Professor, Department of Biological Sciences, Stanford University, United States Marina Motovilova, Faculty of Geography, Laboratory of Moscow Region, Russia M.K. Prasad, Environment Centre of the Kerala Sastra Sahitya Parishad, India Walter V. Reid, Director, Millennium Ecosystem Assessment, Malaysia and United States Henry Schacht, Past Chairman of the Board, Lucent Technologies, United States Peter Johan Schei, Director, The Fridtjof Nansen Institute, Norway Ismail Serageldin, President, Bibliotheca Alexandrina, Egypt David Suzuki, Chair, David Suzuki Foundation, Canada M.S. Swaminathan, Chairman, MS Swaminathan Research Foundation, India José Galízia Tundisi, President, International Institute of Ecology, Brazil Axel Wenblad, Vice President Environmental Affairs, Skanska AB, Sweden Xu Guanhua, Minister, Ministry of Science and Technology, China Muhammad Yunus, Managing Director, Grameen Bank, Bangladesh Millennium Ecosystem Assessment Board The MA Board represents the users of the findings of the MA process. Ecosystems and Human Well-being Synthesis A Report of the Millennium Ecosystem Assessment Core Writing Team Walter V. Reid, Harold A. Mooney, Angela Cropper, Doris Capistrano, Stephen R. Carpenter, Kanchan Chopra, Partha Dasgupta, Thomas Dietz, Anantha Kumar Duraiappah, Rashid Hassan, Roger Kasperson, Rik Leemans, Robert M. May, Tony (A.J.) McMichael, Prabhu Pingali, Cristián Samper, Robert Scholes, Robert T. Watson, A.H. Zakri, Zhao Shidong, Neville J. Ash, Elena Bennett, Pushpam Kumar, Marcus J. Lee, Ciara Raudsepp-Hearne, Henk Simons, Jillian Thonell, and Monika B. Zurek Extended Writing Team MA Coordinating Lead Authors, Lead Authors, Contributing Authors, and Sub-global Assessment Coordinators Review Editors José Sarukhán and Anne Whyte (co-chairs) and MA Board of Review Editors Suggested citation: Millennium Ecosystem Assessment, 2005. Ecosystems and Human Well-being: Synthesis. Island Press, Washington, DC. Copyright © 2005 World Resources Institute All rights reserved under International and Pan-American Copyright Conventions. No part of this book may be reproduced in any form or by any means without permission in writing from the copyright holder: World Resources Institute, 10 G Street NE, Suite 800, Washington, DC 20002. ISLAND PRESS is a trademark of The Center for Resource Economics. Library of Congress Cataloging-in-Publication data. Ecosystems and human well-being : synthesis / Millennium Ecosystem Assessment. p. cm. – (The Millennium Ecosystem Assessment series) ISBN 1-59726-040-1 (pbk. : alk. paper) 1. Human ecology. 2. Ecosystem management. I. Millennium Ecosystem Assessment (Program) II. Series. GF50.E26 2005 304.2–dc22 2005010265 British Cataloguing-in-Publication data available. Printed on recycled, acid-free paper Book design by Dever Designs Manufactured in the United States of America Foreword ii Preface v Reader’s Guide x Summary for Decision-makers 1 Finding 1: Ecosystem Change in Last 50 Years 2 Finding 2: Gains and Losses from Ecosystem Change 5 Finding 3: Ecosystem Prospects for Next 50 Years 14 Finding 4: Reversing Ecosystem Degradation 18 Key Questions in the Millennium Ecosystem Assessment 25 1. How have ecosystems changed? 26 2. How have ecosystem services and their uses changed? 39 3. How have ecosystem changes affected human well-being and poverty alleviation? 49 4. What are the most critical factors causing ecosystem changes? 64 5. How might ecosystems and their services change in the future under various plausible scenarios? 71 6. What can be learned about the consequences of ecosystem change for human well-being at sub-global scales? 84 7. What is known about time scales, inertia, and the risk of nonlinear changes in ecosystems? 88 8. What options exist to manage ecosystems sustainably? 92 9. What are the most important uncertainties hindering decision-making concerning ecosystems? 101 Appendix A. Ecosystem Service Reports 103 Appendix B. Effectiveness of Assessed Responses 123 Appendix C. Authors, Coordinators, and Review Editors 132 Appendix D. Abbreviations, Acronyms, and Figure Sources 136 Appendix E. Assessment Report Tables of Contents 137 Contents Ecosystems and Human Well-being: S y n t h e s i s ii Foreword The Millennium Ecosystem Assessment was called for by United Nations Secretary-General Kofi Annan in 2000 in his report to the UN General Assembly, We the Peoples: The Role of the United Nations in the 21st Century. Governments subsequently supported the establishment of the assessment through decisions taken by three international conventions, and the MA was initiated in 2001. The MA was conducted under the auspices of the United Nations, with the secretariat coordinated by the United Nations Environment Programme, and it was governed by a multistake- holder board that included representatives of international institutions, governments, business, NGOs, and indigenous peoples. The objective of the MA was to assess the consequences of ecosystem change for human well-being and to establish the scientific basis for actions needed to enhance the conservation and sustainable use of ecosystems and their contributions to human well-being. This report presents a synthesis and integration of the findings of the four MA Working Groups (Condition and Trends, Scenarios, Responses, and Sub-global Assessments). It does not, however, provide a comprehensive summary of each Working Group report, and readers are encouraged to also review the findings of these separately. This synthesis is organized around the core questions originally posed to the assessment: How have ecosystems and their services changed? What has caused these changes? How have these changes affected human well-being? How might ecosystems change in the future and what are the implications for human well-being? And what options exist to enhance the con- servation of ecosystems and their contribution to human well-being? This assessment would not have been possible without the extraordinary commitment of the more than 2,000 authors and reviewers worldwide who contributed their knowledge, creativity, time, and enthusiasm to this process. We would like to express our gratitude to the members of the MA Assessment Panel, Coordinating Lead Authors, Lead Authors, Contributing Authors, Board of Review Editors, and Expert Reviewers who contributed to this process, and we wish to acknowledge the in-kind support of their institutions, which enabled their participation. (The list of reviewers is available at www.MAweb.org.) We also thank the members of the synthesis teams and the synthesis team co-chairs: Zafar Adeel, Carlos Corvalan, Rebecca D’Cruz, Nick Davidson, Anantha Kumar Duraiappah, C. Max Finlayson, Simon Hales, Jane Lubchenco, Anthony McMichael, Shahid Naeem, David Niemeijer, Steve Percy, Uriel Safriel, and Robin White. We would like to thank the host organizations of the MA Technical Support Units—WorldFish Center (Malaysia); UNEP-World Conservation Monitoring Centre (United Kingdom); Institute of Economic Growth (India); National Institute of Public Health and the Environment (Netherlands); University of Pretoria (South Africa), U.N. Food and Agriculture Organization; World Resources Institute, Meridian Institute, and Center for Limnology of the University of Wisconsin (all in the United States); Scientific Committee on Problems of the Environment (France); and Interna- tional Maize and Wheat Improvement Center (Mexico)—for the support they provided to the process. The Scenarios Working Group was established as a joint project of the MA and the Scientific Committee on Problems of the Envi- ronment, and we thank SCOPE for the scientific input and oversight that it provided. We thank the members of the MA Board (listed earlier) for the guidance and oversight they provided to this process and we also thank the current and previous Board Alternates: Ivar Baste, Jeroen Bordewijk, David Cooper, Carlos Corvalan, Nick Davidson, Lyle Glowka, Guo Risheng, Ju Hongbo, Ju Jin, Kagumaho (Bob) Kakuyo, Melinda Kimble, Kanta Kumari, Stephen Lonergan, Charles Ian McNeill, Joseph Kalemani Mulongoy, Ndegwa Ndiang’ui, and Mohamed Maged Younes. The contributions of past members of the MA Board were instrumental in shaping the MA focus and process and these individuals include Philbert Brown, Gisbert Glaser, He Changchui, Richard Helmer, Yolanda Kakabadse, Yoriko Kawaguchi, Ann Kern, Roberto Lenton, Corinne Lepage, Hubert Markl, Arnulf Müller- Helbrecht, Alfred Oteng-Yeboah, Seema Paul, Susan Pineda Mercado, Jan Plesnik, Peter Raven, Cristián Samper, Ecosystems and Human Well-being: S y n t h e s i s iii Ola Smith, Dennis Tirpak, Alvaro Umaña, and Meryl Williams. We wish to also thank the members of the Explor- atory Steering Committee that designed the MA project in 1999–2000. This group included a number of the current and past Board members, as well as Edward Ayensu, Daniel Claasen, Mark Collins, Andrew Dearing, Louise Fresco, Madhav Gadgil, Habiba Gitay, Zuzana Guziova, Calestous Juma, John Krebs, Jane Lubchenco, Jeffrey McNeely, Ndegwa Ndiang’ui, Janos Pasztor, Prabhu L. Pingali, Per Pinstrup-Andersen, and José Sarukhán. And we would like to acknowledge the support and guidance provided by the secretariats and the scientific and technical bodies of the Convention on Biological Diversity, the Ramsar Convention on Wetlands, the Convention to Combat Desertification, and the Convention on Migratory Species, which have helped to define the focus of the MA and of this report. We are grateful to two members of the Board of Review Editors, Gordon Orians and Richard Norgaard, who played a particu- larly important role during the review and revision of this synthesis report. And, we would like to thank Ian Noble and Mingsarn Kaosa-ard for their contributions as members of the Assessment Panel during 2002. We thank the interns and volunteers who worked with the MA Secretariat, part-time members of the Secretariat staff, the administrative staff of the host organizations, and colleagues in other organizations who were instrumental in facilitating the process: Isabelle Alegre, Adlai Amor, Hyacinth Billings, Cecilia Blasco, Delmar Blasco, Herbert Caudill, Lina Cimarrusti, Emily Cooper, Dalène du Plessis, Keisha-Maria Garcia, Habiba Gitay, Helen Gray, Sherry Heileman, Norbert Henninger, Tim Hirsch, Toshie Honda, Francisco Ingouville, Humphrey Kagunda, Brygida Kubiak, Nicholas Lapham, Liz Levitt, Christian Marx, Stephanie Moore, John Mukoza, Arivudai Nambi, Laurie Neville, Rosemarie Philips, Veronique Plocq Fichelet, Maggie Powell, Janet Ranganathan, Carolina Katz Reid, Liana Reilly, Carol Rosen, Mariana Sanchez Abregu, Anne Schram, Jean Sedgwick, Tang Siang Nee, Darrell Taylor, Tutti Tischler, Daniel Tunstall, Woody Turner, Mark Valentine, Elsie Vélez-Whited, Elizabeth Wilson, and Mark Zimsky. Special thanks are due to Linda Starke, who skillfully edited this report, and to Philippe Rekacewicz and Emmanuelle Bournay of UNEP/GRID-Arendal, who prepared the Figures. We also want to acknowledge the support of a large number of nongovernmental organizations and networks around the world that have assisted in outreach efforts: Alexandria University, Argentine Business Council for Sustainable Development, Asociación Ixa Ca Vaá (Costa Rica), Arab Media Forum for Environment and Develop- ment, Brazilian Business Council on Sustainable Development, Charles University (Czech Republic), Chinese Acad- emy of Sciences, European Environmental Agency, European Union of Science Journalists’ Associations, EIS-Africa (Burkina Faso), Forest Institute of the State of São Paulo, Foro Ecológico (Peru), Fridtjof Nansen Institute (Norway), Fundación Natura (Ecuador), Global Development Learning Network, Indonesian Biodiversity Foundation, Institute for Biodiversity Conservation and Research–Academy of Sciences of Bolivia, International Alliance of Indigenous Peo- ples of the Tropical Forests, IUCN office in Uzbekistan, IUCN Regional Offices for West Africa and South America, Permanent Inter-States Committee for Drought Control in the Sahel, Peruvian Society of Environmental Law, Probio- andes (Peru), Professional Council of Environmental Analysts of Argentina, Regional Center AGRHYMET (Niger), Regional Environmental Centre for Central Asia, Resources and Research for Sustainable Development (Chile), Royal Society (United Kingdom), Stockholm University, Suez Canal University, Terra Nuova (Nicaragua), The Nature Conservancy (United States), United Nations University, University of Chile, University of the Philippines, World Assembly of Youth, World Business Council for Sustainable Development, WWF-Brazil, WWF-Italy, and WWF-US. We are extremely grateful to the donors that provided major financial support for the MA and the MA Sub-global Assessments: Global Environment Facility; United Nations Foundation; The David and Lucile Packard Foundation; The World Bank; Consultative Group on International Agricultural Research; United Nations Environment Pro- gramme; Government of China; Ministry of Foreign Affairs of the Government of Norway; Kingdom of Saudi Arabia; Ecosystems and Human Well-being: S y n t h e s i s iv and the Swedish International Biodiversity Programme. We also thank other organizations that provided financial support: Asia Pacific Network for Global Change Research; Association of Caribbean States; British High Commis- sion, Trinidad and Tobago; Caixa Geral de Depósitos, Portugal; Canadian International Development Agency; Christensen Fund; Cropper Foundation, Environmental Management Authority of Trinidad and Tobago; Ford Foundation; Government of India; International Council for Science; International Development Research Centre; Island Resources Foundation; Japan Ministry of Environment; Laguna Lake Development Authority; Philippine Department of Environment and Natural Resources; Rockefeller Foundation; U.N. Educational, Scientific and Cul- tural Organization; UNEP Division of Early Warning and Assessment; United Kingdom Department for Environ- ment, Food and Rural Affairs; United States National Aeronautic and Space Administration; and Universidade de Coimbra, Portugal. Generous in-kind support has been provided by many other institutions (a full list is available at www.MAweb.org). The work to establish and design the MA was supported by grants from The Avina Group, The David and Lucile Packard Foundation, Global Environment Facility, Directorate for Nature Management of Norway, Swedish International Development Cooperation Authority, Summit Foundation, UNDP, UNEP, United Nations Foundation, United States Agency for International Development, Wallace Global Fund, and The World Bank. We give special thanks for the extraordinary contributions of the coordinators and full-time staff of the MA Secretariat: Neville Ash, Elena Bennett, Chan Wai Leng, John Ehrmann, Lori Han, Christine Jalleh, Nicole Khi, Pushpam Kumar, Marcus Lee, Belinda Lim, Nicolas Lucas, Mampiti Matete, Tasha Merican, Meenakshi Rathore, Ciara Raudsepp-Hearne, Henk Simons, Sara Suriani, Jillian Thonell, Valerie Thompson, and Monika Zurek. Finally, we would particularly like to thank Angela Cropper and Harold Mooney, the co-chairs of the MA Assess- ment Panel, and José Sarukhán and Anne Whyte, the co-chairs of the MA Review Board, for their skillful leadership of the assessment and review processes, and Walter Reid, the MA Director for his pivotal role in establishing the assessment, his leadership, and his outstanding contributions to the process. Dr. Robert T. Watson MA Board Co-chair Chief Scientist The World Bank Dr. A.H. Zakri MA Board Co-chair Director, Institute for Advanced Studies United Nations University Ecosystems and Human Well-being: S y n t h e s i s v The Millennium Ecosystem Assessment was carried out between 2001 and 2005 to assess the consequences of ecosys- tem change for human well-being and to establish the scientific basis for actions needed to enhance the conservation and sustainable use of ecosystems and their contributions to human well-being. The MA responds to government requests for information received through four international conventions—the Convention on Biological Diversity, the United Nations Convention to Combat Desertification, the Ramsar Convention on Wetlands, and the Convention on Migratory Species—and is designed to also meet needs of other stakeholders, including the business community, the health sector, nongovernmental organizations, and indigenous peoples. The sub-global assessments also aimed to meet the needs of users in the regions where they were undertaken. The assessment focuses on the linkages between ecosystems and human well-being and, in particular, on “ecosystem services.” An ecosystem is a dynamic complex of plant, animal, and microorganism communities and the nonliving environment interacting as a functional unit. The MA deals with the full range of ecosystems—from those relatively undisturbed, such as natural forests, to landscapes with mixed patterns of human use, to ecosystems intensively man- aged and modified by humans, such as agricultural land and urban areas. Ecosystem services are the benefits people obtain from ecosystems. These include provisioning services such as food, water, timber, and fiber; regulating services that affect climate, floods, disease, wastes, and water quality; cultural services that provide recreational, aesthetic, and spiri- tual benefits; and supporting services such as soil formation, photosynthesis, and nutrient cycling. (See Figure A.) The human species, while buffered against environmental changes by culture and technology, is fundamentally dependent on the flow of ecosystem services. The MA examines how changes in ecosystem services influence human well-being. Human well-being is assumed to have multiple constituents, including the basic material for a good life, such as secure and adequate livelihoods, enough food at all times, shelter, clothing, and access to goods; health, including feeling well and having a healthy physical environment, such as clean air and access to clean water; good social relations, including social cohesion, mutual respect, and the ability to help others and provide for children; security, including secure access to natural and other resources, personal safety, and security from natural and human-made disasters; and freedom of choice and action, including the opportunity to achieve what an individual values doing and being. Freedom of choice and action is influenced by other constituents of well-being (as well as by other factors, notably education) and is also a precondition for achieving other components of well-being, particularly with respect to equity and fairness. The conceptual framework for the MA posits that people are integral parts of ecosystems and that a dynamic inter- action exists between them and other parts of ecosystems, with the changing human condition driving, both directly and indirectly, changes in ecosystems and thereby causing changes in human well-being. (See Figure B.) At the same time, social, economic, and cultural factors unrelated to ecosystems alter the human condition, and many natural forces influence ecosystems. Although the MA emphasizes the linkages between ecosystems and human well-being, it recognizes that the actions people take that influence ecosystems result not just from concern about human well-being but also from considerations of the intrinsic value of species and ecosystems. Intrinsic value is the value of something in and for itself, irrespective of its utility for someone else. The Millennium Ecosystem Assessment synthesizes information from the scientific literature and relevant peer- reviewed datasets and models. It incorporates knowledge held by the private sector, practitioners, local communities, and indigenous peoples. The MA did not aim to generate new primary knowledge, but instead sought to add value to existing information by collating, evaluating, summarizing, interpreting, and communicating it in a useful form. Assessments like this one apply the judgment of experts to existing knowledge to provide scientifically credible answers to policy-relevant questions. The focus on policy-relevant questions and the explicit use of expert judgment distinguish this type of assessment from a scientific review. Preface Ecosystems and Human Well-being: S y n t h e s i s vi Provisioning FOOD FRESH WATER WOOD AND FIBER FUEL Regulating CLIMATE REGULATION FLOOD REGULATION DISEASE REGULATION WATER PURIFICATION Cultural AESTHETIC SPIRITUAL EDUCATIONAL RECREATIONA L Supporting NUTRIENT CYCLING SOIL FORMATION PRIMARY PRODUCTION Security PERSONAL SAFETY SECURE RESOURCE ACCESS SECURITY FROM DISASTERS Basic material fo r good life ADEQUATE LIVELIHOODS SUFFICIENT NUTRITIOUS FOOD SHELTER ACCESS TO GOODS Health STRENGTH FEELING WELL ACCESS TO CLEAN AIR AND WATE R Good social relations SOCIAL COHESION MUTUAL RESPECT ABILITY TO HELP OTHERS Freedom of choice and action OPPORTUNITY TO BE ABLE TO ACHIEVE WHAT AN INDIVIDUAL VALUES DOING AND BEING ECOSYSTEM SERVICES CONSTITUENTS OF WELL-BEIN G LIFE ON EARTH - BIODIVERSITY Low Medium High ARROW’S COLOR Potential for mediation by socioeconomic factors Weak Medium Strong ARROW’S WIDTH Intensity of linkages between ecosystem services and human well-being Source: Millennium Ecosystem Assessment Ecosystems and Human Well-being: S y n t h e s i s vi Figure A. Linkages between Ecosystem Services and Human Well-being This Figure depicts the strength of linkages between categories of ecosystem services and components of human well-being that are commonly encountered, and includes indications of the extent to which it is possible for socioeconomic factors to mediate the linkage. (For example, if it is possible to purchase a substitute for a degraded ecosystem service, then there is a high potential for mediation.) The strength of the linkages and the potential for mediation differ in different ecosystems and regions. In addition to the influence of ecosystem services on human well-being depicted here, other factors—including other environmental factors as well as economic, social, technological, and cultural factors—influence human well-being, and ecosystems are in turn affected by changes in human well-being. (See Figure B.) [...]... potential area converted – 10 0 Ecosystems and Human Well-being: S y n t h e s i s 20 30 40 50 60 70 80 90 100 % MEDITERRANEAN FORESTS, WOODLANDS, AND SCRUB TEMPERATE FOREST STEPPE AND WOODLAND TEMPERATE BROADLEAF AND MIXED FORESTS TROPICAL AND SUB-TROPICAL DRY BROADLEAF FORESTS FLOODED GRASSLANDS AND SAVANNAS TROPICAL AND SUB-TROPICAL GRASSLANDS, SAVANNAS, AND SHRUBLANDS TROPICAL AND SUB-TROPICAL CONIFEROUS... that were assessed: ■ What are the current condition and trends of ecosystems, ecosystem services, and human well-being? ■ What are plausible future changes in ecosystems and their ecosystem services and the consequent changes in human well-being? ■ What can be done to enhance well-being and conserve ecosystems? What are the strengths and weaknesses of response options that can be considered to realize... Cultivated Mountain Dryland Coastal 0 Island Forest and woodland Polar Gross domestic product Sources: Millennium Ecosystem Assessment (human migration and deepening poverty sometimes contributing to conflict and instability) Despite these tremendous challenges, people living in drylands and their land management systems have a proven resilience and the capability of preventing land degradation, although... institutions, and practices can mitigate some but not all of the negative consequences of growing pressures on ecosystems But the changes required are substantial and are not currently under way An effective set of responses to ensure the sustainable management of ecosystems requires substantial changes in institutions and 2 Ecosystems and Human Well-being: S y n t h e s i s governance, economic policies and. .. use of ecosystems Finding #1: Over the past 50 years, humans have changed ecosystems more rapidly and extensively than in any comparable period of time in human history, largely to meet rapidly growing demands for food, fresh water, timber, fiber, and fuel This has resulted in a substantial and largely irreversible loss in the diversity of life on Earth The structure and functioning of the world’s ecosystems. .. they appear in italics x Ecosystems and Human Well-being: S y n t h e s i s Summary for Decision-makers E veryone in the world depends completely on Earth’s ecosystems and the services they provide, such as food, water, disease management, climate regulation, spiritual fulfillment, and aesthetic enjoyment Over the past 50 years, humans have changed these ecosystems more rapidly and extensively than in... levels of human wellbeing Approximately 10–20% of the world’s drylands are degraded (medium certainty) directly harming the people living in these areas and indirectly harming a larger population through biophysical impacts (dust storms, greenhouse gas emissions, and regional climate change) and through socioeconomic impacts Ecosystems and Human Well-being: S y n t h e s i s 13 Figure 12 Human Population... humans have changed ecosystems more rapidly and extensively than in any comparable period of time in human history, largely to meet rapidly growing demands for food, fresh water, timber, fiber, and fuel This has resulted in a substantial and largely irreversible loss in the diversity of life on Earth ■ The changes that have been made to ecosystems have contributed to substantial net gains in human well-being. .. that health and social conditions for the North and South could further diverge, exacerbating health problems in many low-income regions Changes in ecosystems 18 Ecosystems and Human Well-being: S y n t h e s i s influence the abundance of human pathogens such as malaria and cholera as well as the risk of emergence of new diseases Malaria is responsible for 11% of the disease burden in Africa, and it is... enhance human well-being and conserve ecosystems Source: Millennium Ecosystem Assessment Ecosystems and Human Well-being: S y n t h e s i s vii Five overarching questions, along with more detailed lists of user needs developed through discussions with stakeholders or provided by governments through international conventions, guided the issues that were assessed: ■ What are the current condition and trends . strategies and interventions can be applied at many points in this framework to enhance human well-being and conserve ecosystems. Ecosystems and Human Well-being: . FORESTS, WOODLANDS, AND SCRUB TROPICAL AND SUB-TROPICAL DRY BROADLEAF FORESTS TROPICAL AND SUB-TROPICAL GRASSLANDS, SAVANNAS, AND SHRUBLANDS FLOODED GRASSLANDS AND