Biodiversity: Its Importance to Human Health
Total Page:16
File Type:pdf, Size:1020Kb
Biodiversity: Its Importance to Human Health Interim Executive Summary Editor Eric Chivian M.D. A Project of the Center for Health and the Global Center for Health and the Global Environment Environment Harvard Medical School Harvard Medical School 401 Park Drive, 2nd Floor East Boston, MA 02215 under the auspices of the 617 384 8530 Telephone World Health Organization, 617 384 8585 Fax the United Nations Development [email protected] Programme, and the United Nations www.med.harvard.edu/chge Environment Programme The project Biodiversity: Its Importance to Human Health Working Group 1: Biodiversity Working Group 4: The Value of Plants, Animals, has been made possible through the generous support Chairs and Microbes to Medical Research of several individuals and the following foundations: Stuart Pimm Chairs Bristol-Myers Squibb Company Maria Alice dos Santos Alves Eric Chivian Nathan Cummings Foundation Members Joshua Rosenthal Richard & Rhoda Goldman Fund Christer Nilsson Members Clarence E. Heller Charitable Foundation Callum Roberts Mark Cattet Johnson & Johnson Terry Root John Daly John D. and Catherine T. MacArthur Foundation Stephen Schneider Andrew Hendrickx The New York Community Trust Melanie Stiassny Toshio Narahasi The Josephine Bay Paul and C. Michael Paul Foundation, Inc. Ralph Nelson The Pocantico Conference Center of the Rockefeller Brothers Fund Working Group 2: Ecosystem Services Baldomero Olivera V. Kann Rasmussen Foundation Chairs Ken Paigen Wallace Genetic Foundation Jerry Melillo Gary Ruvkun Wallace Global Fund Osvaldo Sala The Winslow Foundation Members Working Group 5: Ecosystem Disturbance, Amy Austin Biodiversity, and Human Infectious Diseases Donald Boesch Chairs Scott Collins David Molyneux Johnson & Johnson generously provided the funding Norma Fowler Richard Ostfeld for this second printing. Linda Joyce Members William Lauenroth Felix Amerasinghe Roger Pielke Robert Bos Jose Sarrukhan Peter Daszak Mary Scholes Paul Epstein Pier Vallinga Thomas Kristensen Brian Walker Stephen Morse Rusong Wang Yasmin Rubio Working Group 3: Medicines from Working Group 6: The Role of Biodiversity Natural Sources in World Food Production Chairs Chairs David Newman Daniel Hillel John Kilama Cynthia Rosenzweig Members Members Gordon Cragg Francisco Garcia-Olmedo Gabriela Coelho de Souza Andrew Pierce Elaine Elisabetsky David Sherman William Fenical Zhao Shidong Ana Paula Schulte Haas Amos Tandler Charles Wambebe Diana Wall Working Group 7: Policy Options Chairs Jeffrey McNeely Madhav Gadgil Members Martha Chouchena-Rojas Vernon Heywood Walter Reid Setijati Sastrapradja 10693 Pgs 01-5.aa 1/28/04 3:17 PM Page 1 Biodiversity: Its Importance to Human Health Interim Executive Summary A Project of the Center for Health and the Global Environment Harvard Medical School under the auspices of the World Health Organization, the United Nations Development Programme, and the United Nations Environment Programme Editor Eric Chivian M.D. Associate Editors Maria Alice dos Santos Alves Ph.D. (Brazil) Aaron S. Bernstein (USA) Robert Bos M.Sc. (WHO) Paul Epstein M.D., MPH (USA) Madhav Gadgil Ph.D. (India) Hiremagular Gopalan Ph.D. (UNEP) Daniel Hillel Ph.D. (Israel) John Kilama Ph.D. (USA/Uganda) Jeffrey McNeely Ph.D. (IUCN) Jerry Melillo Ph.D. (USA) David Molyneux Ph.D., Dsc (UK) Jo Mulongoy Ph.D. (CBD) David Newman Ph.D. (USA) Richard Ostfeld Ph.D. (USA) Stuart Pimm Ph.D. (USA) Joshua Rosenthal Ph.D. (USA) Cynthia Rosenzweig Ph.D. (USA) Osvaldo Sala Ph.D. (Argentina) 1 Biodiversity 10693 Pgs 01-5.aa 1/28/04 3:17 PM Page 2 © 2002 Center for Health and the Global Environment Harvard Medical School 2003 2nd printing (with revisions) The views expressed in this report are those of the authors and do not necessarily reflect those of the World Health Organization, the United Nations Development Programme, the United Nations Environment Programme, or other cooperating institutions or agencies. The mention of a commercial company or product does not imply endorsement by any of the institutions or agencies involved in this report. Design by WGBH Design Cover Photo: Blue Poison Arrow Frog (Dendrobates azureus) 0410093 © Art Wolfe 1991 10693 Pgs 01-5.aa 1/28/04 3:17 PM Page 3 Chapter 1: Contents Biodiversity 6 Chapter 2: Ecosystem Services 13 Chapter 3: Medicines from Natural Sources 19 Chapter 4: The Value of Plants, Animals, and Microbes to Medical Research 26 Chapter 5: Ecosystem Disturbance, Biodiversity, and Human Infectious Diseases 34 Chapter 6: The Role of Biodiversity in World Food Production 41 Chapter 7: Policy Options 49 10693 Pgs 01-5.aa 1/28/04 3:17 PM Page 4 Introduction calculating, on the basis of habitat destruction alone, that as many as two thirds of all species on E.O. Wilson once said about ants “we need them Earth could be lost by the end of this century, a to survive, but they don’t need us at all.” The proportion of lost species that matches the great same, in fact, could be said about countless other extinction event, 65 million years ago, that wiped insects, bacteria, fungi, plankton, plants, and out the dinosaurs. That event was most likely the other organisms. This central truth, however, is result of a giant asteroid striking the Earth; largely lost to most of us. Rather, we act as if we this one we alone are causing. were totally independent of Nature, as if it were We have done all these things, our species, an infinite source of products and services for our Homo sapiens sapiens, one species out of use alone, and an infinite sink for our wastes. perhaps ten million or more, and a very young During the past 50 years, for example, we species at that, having evolved only about 130,000 have squandered one fourth of the world’s topsoil, years ago, behaving as if these alterations were one fifth of its agricultural land, and one third of happening someplace other than where we live, as its forests, while at the same time needing these if they had no effect on us whatsoever. resources more than ever, having increased our This mindless degradation of the planet is population from 2.5 billion to over 6.1 billion. driven by many factors, not the least of which is We have dumped many millions of tons of toxic our inability to take seriously the implications of chemicals onto soils and into fresh water, the our rapidly growing populations and of our oceans, and the air, while knowing very little unsustainable consumption, largely by people in about the effects these chemicals have on other industrialized countries, of its resources. species, or, in fact, on ourselves. We have changed Ultimately, our behavior is the result of a the composition of the atmosphere, thinning the fundamental failure to recognize that human ozone layer that filters out harmful ultraviolet beings are an inseparable part of Nature and that radiation, toxic to all living things on land and in we cannot damage it severely without severely surface waters, and increasing the concentration damaging ourselves. of atmospheric carbon dioxide to levels not present This report was first conceived ten years ago on Earth for more than 420,000 years. These at the Earth Summit in Rio de Janeiro when the carbon dioxide emissions, caused mainly by our great promise of that event and its ambitious goals burning fossil fuels, are unleashing a warming of for controlling global climate change and conserv- the Earth’s surface and a change in the climate ing the world’s biodiversity were first elaborated. that will increasingly threaten our health, and the What was recognized then, and what is even more survival of other species worldwide. And we are widely appreciated now, was that, in contrast to now consuming or wasting almost half of all the the issue of climate change, there was inadequate planet’s net photosynthetic production on land attention being paid to the potential consequences and more than half of its available freshwater. for human health resulting from species loss and Most disturbing of all, we are so damaging the the disruption of ecosystems. This general neglect habitats in which other species live that we are of the relationship between biodiversity and driving them to extinction, the only truly human health, it was believed, was a very serious irreversible consequence of our environmental problem. Not only were the full human dimen- assaults, at a rate that is hundreds or perhaps sions of biodiversity loss failing to inform policy even thousands of times greater than natural decisions, but the general public, lacking an background rates. As a result, some biologists are understanding of the health risks involved, was 4 Biodiversity: Its Importance to Human Health 10693 Pgs 01-5.aa 1/28/04 3:17 PM Page 5 not grasping the magnitude of the biodiversity • Chapter 3 covers medicines and natural crisis, and not developing a sense of urgency to pesticides that are derived from plants, animals, address it. Unfortunately, aesthetic, ethical, and microbes. religious, even economic, arguments had not • Chapter 4 traces the dependency of medical been enough to convince them. research on other species. To address this need, the Center for Health and the Global Environment at Harvard Medical • Chapter 5 examines the complex relationships School proposed that it coordinate an internation- among ecosystem disruption, biodiversity, and al scientific effort to compile what was known the emergence and spread of human infectious about how other species contribute to human diseases. health, under the auspices of the World Health • Chapter 6 discusses the role of biodiversity in Organization (WHO), the United Nations world food production—on land, in freshwater, Development Programme (UNDP), and the and in the oceans. United Nations Environment Programme (UNEP), and to produce a report on the subject • Chapter 7 provides for the policy-maker a that would be the most comprehensive one preliminary list of suggested options to consider available.