RESEARCH RESEARCH Six priority topics for development Studying and understanding the environment Protecting biodiversity and ecosystems Societies, health and development Ethics in research for developing countries 8-9 11 17 23 29 7 SIX PRIORITY TOPICS FOR DEVELOPMENT Topic 1 Environmental hazards and the safety of Southern communities Topic 2 Sustainable ecosystem management in the South Topic 3 Southern continental and coastal water resources and their use Southern countries are more exposed than the developed North to environmental hazards such as earthquakes, landslides, volcanic eruptions, hurricanes, floods and epidemics. Most of the regions vital for the planet’s biodiversity are located in Southern countries. These countries possess a vast range of ecosystems, from desert to rainforest, ocean to river and savanna to mountain. They are also undergoing spectacular population growth and major population movements, and are feeling the effects of global climate change. These features result in over-exploitation of traditionally used ecosystems, deforestation for the purposes of trade, agriculture and urbanisation, and cultivation of vulnerable marginal land. Access to water is a serious problem in many Southern countries. Identifying water reserves and understanding how best to access and manage them are among the key requirements for development. To assess and forecast such risks, IRD research focuses on severe seismic events, the eruptive dynamics of volcanoes located near major towns, the potential impact of climate change, and desertification processes. Satellite observation enables the teams concerned to take a comprehensive approach to phenomena that threaten populations and the environment, starting from localised cases. We also conduct research on the social and economic pressures connected with natural resources in areas affected by natural hazards. And lastly, the way in which the affected communities perceive and represent these hazards is now recognised as a determining factor for safety management. 8 To achieve sustainable ecosystem management, continental and marine ecosystem dynamics and biodiversity need to be catalogued and described in all their complexity and their interactions. We need to understand how these ecosystems function by analysing physical and chemical properties and soils. The challenges of sustainable development concern both government environmental policy and local practices. The study of ocean-atmosphere interactions holds promise for forecasting the African monsoon in the Sahelian zone. Water quality is an important factor for human health and for fishery resources. As human populations in Southern countries grow, there are major migration movements into areas near rivers, lakes and the sea. The human impact on these environments, including pressure from fishing and aquaculture, is increasing dramatically. To protect these ecosystems and their resources, we need to catalogue the resources and forecast their ability to withstand increasing human use. Topic 4 Food security in the South Topic 5 Health in the South: epidemics, endemic and emerging diseases, healthcare systems Topic 6 Economic, social, identity and spatial dynamics issues in the South Ensuring food security is an essential aspect of poverty reduction. Avoiding malnutrition depends in part on improving processing methods and learning about healthy, balanced diets. In Southern countries, development is still seriously hampered by public health problems and infectious and emerging diseases. The human and social dimensions of development challenges are expressed largely through policies to reduce poverty, inequality, the effects of globalisation and the impact of technological progress. For the most part, today’s fast-growing food requirements will be met by agriculture, its output and the nutritional quality of its produce. Intensifying production under sustainable conditions will depend on a number of basic, structuring knowledge areas. For example, learning more about the biology and physiology of crop species and identifying genetic mechanisms will accelerate plant breeding. An «ecological agronomy» will be achieved by increasing yields under sustainable conditions while maintaining soil fertility, minimising erosion and reducing inputs. This particularly depends on a more thorough knowledge of soil structure, macrofaunal activity and nitrogenfixing symbiosis in plants. Improving productivity also implies crop protection and management of crop pests, diseases and parasites, particularly through advances in biological control. IRD research mainly concerns diseases connected with poverty (malaria, tuberculosis and HIV/AIDS), the so-called «neglected» diseases (mainly trypanosomiasis and leishmaniasis) and emerging viral diseases (dengue, Ebola and West Nile). Other research focuses on the genetic diversity and structure of the pathogens,characterisation of the vectors, drug resistance and natural bioactive compounds found in terrestrial or marine organisms. Special attention is paid to the social and anthropological aspects of health, through studies of healthcare quality, patients’ observance of prescribed treatments, preventive behaviour, the organisation of health services and representations of illness. Most work in this sphere is multidisciplinary, involving social scientists alongside doctors, biologists and epidemiologists. Population dynamics, migration and urbanisation are particularly fruitful focuses for studying social change. Analysing trends in knowledge, education policy, linguistic diversity, identity reconstruction and diasporas helps to improve understanding and forecasting of societal changes. Research in archaeology not only sheds light on the past of Southern societies, it also shows how people adapt their cultural and technological models to natural constraints. SIX PRIORITY TOPICS FOR DEVELOPMENT 9 10 Earth and environment STUDYING AND UNDERSTANDING THE ENVIRONMENT The aims of the Earth and Environment department (DME) are to understand physical natural phenomena, to assess resources and to study the risk-hazard relations connected with complex interactions between the solid and fluid envelopes of our planet and the action of the biosphere on those envelopes. Seventy-five per cent of the department’s research scientists are working in joint research units with universities and other research bodies, particularly the CNRS, CNES, INRA, Cemagref and CIRAD. Two international joint laboratories, in India and Brazil, were set up and two more, in Chile and South Africa, are under discussion. In this respect the department acts as an interactive portal enabling many partners to conduct exchanges and intercommunicate with French research structures. As regards environmental risks and hazards, in 2004 IRD research focused on seismic activity, setting up networks in South America to observe and monitor tectonic phenomena. On the climate side, two of our key research programmes are studying palaeoclimates and analysing the desertification process on the fringes of the Sahara. Tropical ocean systems and soils (in relation to atmosphere, water and biology) are addressed through physical and chemical observation using inputs from biology and the social sciences.There are four strands to IRD research on hydrologic systems: experimental and field hydrology, water resources and reserves, management of hydrologic systems and international flow monitoring systems (with the world hydrological cycle observing system Whycos, and research in the major river basins of the Amazon, Orenoco, Congo and Niger). Applied mathematics, data processing and satellite-based observation systems also play a part in the study of complex processes. © IR D/ V . Si m on n eau x The department also pilots major international projects. AMMA, a research programme on the African monsoon, has over 200 researchers from the G8 countries and 200 African researchers. The aims are to acquire a variety of data for short-term climate forecasting in West Africa and to control the impact of climate change. An example of partnership with other French and European organisation in desertification control is the long-term ecological surveillance network managed by the Sahara and Sahel Observatory. This programme is now supported by Europe under the name of DeSurvey. The IRD is also lead agency for French research organisations working under the New Partnership for Africa’s Development (NEPAD), particularly in work to set up centres of excellence on water and integrate them into global networks. These examples, based on combined global and analytical approaches, should improve governance in two fields that are now of vital importance: water and desertification. Contact dme@paris.ird.fr gn / P. W a © IRD © IRD / P. W a gn on on 11 Earth and environment SEISMIC HAZARDS AND RISK PREVENTION IN ALGERIA Earthquakes can have a catastrophic impact in urban areas. In Algeria, following the earthquake that hit Boumerdès on 21 May 2003, scientists from the Grenoble Laboratory of Internal Geophysics and Tectonophysics and the Algerian National Centre for Applied Research in Paraseismic Engineering conducted research with a view to adapting urban planning and land use to a region’s seismic profile, so reducing its vulnerability in the event of a quake. Demarcating areas where building should not be permitted and defining architectural criteria, the survey took the social conditions of rebuilding into account. To explain major disparities in the distribution of damage, microzoning was carried out on the towns of Boumerdès, Zemmouri and Bouinan. The measurements taken showed that the entire stratigraphic column was affected by the quake, from the tertiary rocks directly overlying the basement to the most recent layers. This finding is of prime importance for identifying the laws of rock behaviour. On a broader scale, the analysis showed that the structures activated by the Boumerdès quake were sharply partitioned. We now know that the Mitidja basin continues under the sea; the fault that shifted during this earthquake is bordered on its southern side by a major strikeslip fault that is part of the Thénia system. Characterisation of seismic waves in relation to the orientation of the fault activated when the seism occurred explained the distribution of damage to buildings in the town. Scientists 12 established the relation between the initial state of the buildings and the amount of damage after the earthquake. These observations show that for risk prevention purposes, seismic monitoring and visual checks on changes in the state of buildings can usefully complement each other. Contacts guillier@bondy.ird.fr stephane.cartier@obs.ujf-grenoble.fr The geophysical survey was complemented by an analysis of the social, communicational and legal aspects for the populations affected, the better to understand how town planning policy can incorporate seismic information. After a post-quake observation and reorganisation phase, several issues were examined: institutional management of the crisis, malfunctions in the infrastructure networks, economic consequences and the difficulty of getting businesses functioning again, evaluation of dwellings, rehousing, psychological fears and the role of the media in a situation of physical and political uncertainty. The interdisciplinary approach developed in the Boumerdès area continues, to help define criteria for rebuilding. The work will serve for designing a quick, simple method for classifying the state of buildings affected by an earthquake, modelling the parameters of the town’s sedimentary basin and setting up a database on the different types of vulnerable building, for the city of Algiers. Continuous recording coupled with other methods will be used to demarcate zones where the risk of landslip is high and to identify the traces of faults liable to become active again. © IR D /Y. H e ll o ©I RD / Y. Hel lo Earth and environment ANALOGUE MODELLING OF GEOLOGICAL PHENOMENA The Andes cordillera constitutes an ideal natural laboratory for studying volcanic eruptions and the geological functioning of a mountain chain. However, to explain the evolution of the surface of a continent, scientists need to model geological processes. It remains extremely difficult to reconstitute in three dimensions the processes by which the Earth’s crust is deformed and erodes over tens of millions of years, and the interactions between deformation and erosion. On a different timescale, volcanic phenomena such as pyroclastic flows (extremely hot mixtures of volcanic gas and ash generated by the gravitational collapse of a lava dome or an eruption column) are also poorly understood. To improve understanding of these complex processes, natural phenomena can be simulated in the laboratory using reduced-scale models. These experiments reproduce in a few hours the deformations affecting the surface of the planet over several million years.This change in timescale can be achieved by using analogous materials – materials that simulate the mechanical properties of rocks, but at much higher speeds. Dry sand, silicon gum, glucose syrup and even honey can be used to simulate the behaviour of different types of rock in the lithosphere and asthenosphere(1). The role of erosion and its effect on the evolution of landform are modelled by ablation processes, using an aspiration system for example. The University of Chile’s Geology Department and the IRD have set up an analogue modelling laboratory in Santiago. Here, the formation of terrestrial structures can be reproduced for a basin or for the entire lithosphere and upper mantle. Researchers and students are studying the influence of different types of rock behaviour on the development of strike-slip faults and the emplacement of Chile’s major copper deposits. They are also conducting experiments to understand how sedimentary basins are established and the relationship between transfers of matter (by erosion and sedimentation) and the evolution of compressive structures. Using experiments like these to reproduce the functioning of natural systems, scientists can predict more effectively where to find economically useful minerals in the Earth’s crust. For the experiments designed to simulate pyroclastic flows, we generate gravitational currents of particles in suspension in air. Modelling shows that flows of small particles such as volcanic ash propagate at constant velocity, like purely liquid flows. These findings are surprising in that the moving particles are almost in contact, which in principle ought to produce a different type of behaviour.This work will help to understand the evolution of several potentially dangerous Chilean volcanoes such as Villarica and Lascar. (1) Asthenosphere: the layer between the mantle and the overlying lithosphere, on which the tectonic plates move about. Analogue model of the Andes A PARTNER’S VIEWPOINT Reynaldo Charrier, DIRECTOR, DEPARTMENT OF G E O L O G Y, U N I V E R S I T Y O F C H I L E D © IR ér / G. H The development of mountain chains along active continental margins involves deformation, volcanic eruptions, earthquakes and uplifting of huge volumes of rock. An overall understanding of these processes requires expertise in structural geology, petrology, vulcanology, seismology and geomorphology. With the new analogue modelling laboratory in the University of Chile’s Geology Department we have been able to conduct several experiments to improve understanding of several complex situations involving interactions between the oceanic plates that border South America and Antarctica. The role of pre-existing structures in the deformation and uplifting of the Andes chain in central Chile, near Santiago, is also being studied with the aid of models. One goal is to identify the areas where uplifting and erosion are most intense, in order to warn of landslide hazards in areas close to human settlements. ail Contacts O.Roche@opgc.univ-bpclermont.fr martinod@lmtg.obs-mip.fr 13 Contact rcharrie@cec.uchile.cl Earth and environment OCEAN DYNAMICS AND CLIMATE The surface waters of the equatorial Pacific play a major part in changes in the Earth’s changing climate. It is there that the El Niño phenomenon occurs, with its major repercussions on year-to-year climate variation. One consequence of this variability is that ocean waters may act either as sink or as source of atmospheric carbon dioxide, so playing a part in the carbon cycle – and in global warming. The waters of the Eastern Pacific are relatively cool (22-28° C) and salty (> 36g/L). Carbon dioxide is released from these waters into the atmosphere when the combined action of the trade winds and the Coriolis force brings an upwelling of deep water to the surface. The waters of the Western Pacific are warmer (> 28° C) and less salty (> 35 g/L). This is the "warm pool" whose carbon dioxide content is in balance with that of the atmosphere. Between the two water masses is a zone a few kilometres wide, and this is the seat of the physical mechanisms that facilitate or restrict the movement of the warm pool across the Pacific. The two water masses vary widely in their respective surface areas, depending on climatic conditions. During El Niño, the waters of the warm pool spread eastward, sometimes even reaching the coast of South America. Parameters important for studying this phenomenon, such as the salinity, carbon dioxide content and chemical properties of the water, cannot be measured remotely from 14 satellites. To understand the phenomenon, computer modelling is used, with in situ validation. This is the reason for the IRD's regular oceanographic surveys in the Pacific, the most recent of which took place in March and April 2004 on board the IRD's Nouméabased oceanography vessel Alis. During these surveys, the temperature, salinity, surface carbon dioxide content and current are recorded continuously. Other measurements are taken at intervals between the surface and a depth of 1000 metres using a sounder equipped with sensors, which also collects water samples for chemical analysis. Improvements to this technique now provide data on currents in the water column at each station; the new configuration and the types of apparatus used constitute a first for a French research ship. Data gathered during this and earlier surveys confirm the complex interconnections between different processes at all scales, as reflected in the properties of the frontal zone. From this information the scientists have linked unusual salinity values in the warm pool with a ten-year trend in the South Pacific. At the other end of the spectrum, researchers have discovered that the physical and bio-geochemical fronts do not coincide, and have linked this with variations in atmospheric forcing over periods of a few weeks. Contact eldin@ird.fr © IR D /C ©I RD /C .Ma es .M a e s Earth and environment WHYCOS, THE WORLD HYDROLOGICAL CYCLE OBSERVING SYSTEM Many countries in the South are faced with the problem of obtaining enough water of suitable quality. Forty per cent of the world’s population live in countries where water stress is medium to high. There is a danger that water shortage will hinder these countries’ economic development. One fundamental requirement for optimum management of water resources is to have adequate data. However, it is difficult to obtain reliable data quickly to cover long periods, especially where several countries share the same river basin. To address this problem, the World Meteorological Office (WMO) has launched Whycos, the World Hydrological Cycle Observing System. The system’s components complement countries’ own efforts to obtain uniform data in real time; some are regional (e.g. Med-Hycos), others cover cross-border river basins (Niger-Hycos, Volta-Hycos and Mekong-Hycos). IRD hydrologists launched the first regional components of Whycos: Med-Hycos in the Mediterranean and AOC-Hycos in West and Central Africa. Its pilot phase completed, AOC-Hycos now continues with Niger-Hycos for the Niger basin and Volta-Hycos for the Volta (1). The aims are to equip some sixty monitoring stations to transmit data by satellite or telephone and to establish a database in each country of the river basin. As for Med-Hycos, in May 2004 some 270 participants from 40 countries met at the Balwois conference in Macedonia, financed by the European Union. Working in partnership with the Compagnie Nationale du Rhône, IRD scientists have also developed Hydromet, a software for storing, processing and transmitting hydrological and meteorological data. The software is adapted to African requirements and the Hycos projects, and is approved by the WMO for hydrological monitoring stations. Whycos is modelled on the WMO’s World Weather Watch and uses the same information and telecommunications technologies. It will be used to disseminate high-quality data, to promote international collaboration and to build up the capacities of national hydrological services. It will provide the international community with a tool for monitoring water resources worldwide and for understanding the global water cycle. D © IR /M.G auti er A PARTNER’S VIEWPOINT Mohamed Tawfik, HEAD OF THE HYDROLOGY DIVISION, WMO Reliable, referenced databases developed under these projects could be used in many research programmes on water resources, resource management and changes in resource levels. Not all the data accumulated over recent decades, for example by IRD hydrologists in Africa and on other continents, have been digitised. The IRD plans to input these data so as to build up long time series. © IR D (1) The French development and environmental agencies, Agence Française de Développement and Fond Français pour l’Environnement Mondial, have awarded €3,000,000 to NigerHycos and €1,000,000 to Volta-Hycos. /O. B arri è The World Meteorological Office and the IRD have been collaborating fruitfully for ten years now to develop and implement a number of regional components of Whycos, in the Mediterranean basin, Africa and the Caribbean. The IRD has hosted experts from participating countries, forging lasting co-operation links among institutions. It possesses an impressive body of experience in designing, implementing and managing hydrological monitoring stations, from data acquisition to developing tools for data processing, archiving and dissemination. These are invaluable competencies for implementing the Hycos projects on the Volta and Niger rivers and in the Caribbean. This all makes the IRD a key partner for the WMO. re Contact : MTawfik@wmo.int Contact thebe@mpl.ird.fr 15 Rourc vivant 16 Living Rourc PROTECTING BIODIVERSITY AND ECOSYSTEMS The overall aim of research in the Living Resources department is to ensure that ecosystems and the uses made of them are viable, well managed and meet the imperatives of sustainable development. Tropical farming systems are one focus, others are coastal marine and continental aquatic ecosystems and their characteristic biodiversity. The IRD’s evaluation process has resulted in larger, more reactive research units with more ambitious scientific aims. In microbiology and soil science, for example, seven units have been reorganised into three teams taking complementary approaches. 2004 research topics include the use of marginal, vulnerable land, fertilisation or rehabilitation of exhausted soils and assessing the potential of agriculture to sequester carbon. To involve European partners more closely, the Institute joined Cirad in an European Economic Interest Grouping called Ecart whose goal is to stimulate European expertise in tropical agronomy. Research in Senegal and northeastern Thailand produced results that help to explain the severe salinisation in local rice fields. Several units are working on crop pests and diseases. Other IRD scientists are involved in plant breeding, using genomics and molecular biology tools. Internationally, the IRD developed closer partnership with Consultative Group on International Agricultural Research (CGIAR) centres in 2004, taking part in the CGIAR’s Challenge programmes; in particular, teams working on genetic resources were selected for the Generation Challenge Programme. IRD researchers and their partners studying varieties of maize grown in Mexico provided genetic proof that farming practices play a vital part in maintaining wide diversity. Contact drv@paris.ird.fr Scientists studying the management of tropical ecosystems combine input from the natural sciences and the analytical sciences – modelling, spatialisation and bioinformatics. Other 2004 research topics were protected areas and how they are evolving, environmental ethics and economics. Biodepollution and productive use of microorganisms was another field of work; studies in Australian and Mexican oil fields identified species of bacteria that consume nitrates. Water quality is of vital importance for human health, fishery and aquaculture. Preserving the biological quality of continental and coastal waters and conserving fishery ecosystems are also on the department’s agenda. IRD researchers involved in developing national strategy on biodiversity research took part in the Paris Conference on biodiversity governance, marine biodiversity in particular. This focus was illustrated by the Institute’s travelling exhibition on «Fish and Men». The IRD also plays a part in the European Science Foundation and encourages teams to submit proposals for Eurocore programmes, in order to integrate more closely with European structures. is /Y.P a r © IR D © IR D /A .R iv a l 17 LE POINT DE VUE D’UN PARTENAIRE A PARTNER’S VIEWPOINT Julien Demenois, OFFICE NATIONAL DES EAUX ET DE FORÊTS (ONF), FRENCH GUIANA The French forestry authority ONF has been managing 7.5 million hectares of tropical rainforest in French Guiana since 1967. Only some parts of the peri-coastal fringe of the forest, about 1.7 million hectares, can be reached by road or track. Access to the rest is by river or by air, which is a major obstacle to sustainable forest management. Approaches like those the IRD has developed under the CAREFOR and DIME projects are of great interest to the ONF and other management bodies in the SILVOLAB GIS partnership. With methods for predicting parameters such as mean tree diameter or the composition of the flora, forest managers hope to be able to target their diagnostic and field survey efforts more effectively and gain a better understanding of larger areas for land use planning. These techniques look promising and realistic. They should also benefit forest monitoring and logging surveillance once the forthcoming SPOT 5 receiving station is installed in Guiana. Contact julien.demenois@onf.fr Living Rourc IMAGERY FOR TROPICAL FOREST MANAGEMENT To manage tropical rainforest sustainably it is essential to be able to estimate and map the descriptive parameters of the vegetation, such as biomass and biodiversity, for a large area of forest. But these ecosystems are extremely complex, so parameters of this kind can only be directly measured over small areas. Despite the increasing precision of satellite or aerial imagery, until now there had been no reliable method for extrapolating local data to large areas from remotely sensed images. correlated with a set of forest parameters such as density, mean tree diameter, distribution of tree diameters and mean tree height. Reversing the analysis, one can predict from the texture index the characteristics of a forest far beyond the reference plots and map these parameters for an area of several thousand hectares. This is valuable for estimating biomass and carbon stock, monitoring the impact of logging or defining forest types in order to design management plans. IRD scientists working in a joint research unit(1) with a teacher-researcher from the ENGREF, the French Institute of Forestry, Agricultural and Environmental Engineering, now propose a new method of canopy analysis. In a pilot study of a site near the Petit Saut dam in French Guiana, they mathematically analysed digitised aerial photographs using a method developed for studying brousse tigrée in Africa. The results show that the method is useful for studying the texture of tropical rainforest canopy. A mathematical formula called the Fourier transform is used to classify pictures of forest canopy according to the frequency of recurrent motifs of various sizes. A coarse-grained canopy indicates an area where the predominant pattern consists of stands of tall trees alternating with large natural treefall clearings, whereas a finely-grained texture marks a juxtaposition of small tree crowns. The method holds great promise, as it can be reproduced for different types of tree population and different dates. The initial findings have been confirmed by tests in French Guiana on tree populations that had been selectively logged, and in an area of mangrove. The method can be applied both to traditional aerial photographs such as have been taken since the 1950s in tropical regions and to recent satellite images such as those taken by the Ikonos and QuickBird satellites. The study of images taken in French Guiana shows that canopy texture is very closely 18 Contacts Raphael.pelissier@mpl.ird.fr pierre.couteron@ifpindia.org (1) Joint research unit UMR AMAP, «botAnique et bioinforMatique de l’Architecture des Plantes». © IR D /B . de M érona Following these first results, a databank coupling canopy images and field measurements will be set up in early 2005 at the IRD centre in Cayenne. This will enable the IRD to capitalise information in order to refine and gradually validate the correlations between the canopy texture index and the forest structure parameters. The system could in the long run become a common management tool for Guiana’s forests A © IN R roy /C . L e Living Rourc RESTORING MINES SITES IN NEW CALEDONIA New Caledonia is the world’s fourth-ranking nickel producer. Nickel is mined on an openpit system, stripping off soil and vegetation. This increases erosion and endangers some components of biodiversity. It is therefore important to restore mine sites. This mainly means establishing a new vegetation cover that can then evolve towards a biologically diverse state. With mining expanding fast, New Caledonia must reconcile its industrial development with management of a biological heritage that is recognised worldwide for its diversity and originality. At present, revegetation is based on local species selected during earlier research. These are species that thrive in poor soils that are toxic to most plants. They are relatively slow growers, which limits their ground coverage and the extent to which they improve soil fertility – a process that has to happen before secondary species can establish themselves naturally. So it is crucial to find ways to accelerate and amplify the installation and development of the species planted. Current research is intended to improve the performance of pioneer species growing in symbiosis with nitrogen-fixing bacteria or with mycorrhizae that facilitate the host plant’s uptake of nutrient minerals. Isolation trials, selection and characterisation of different symbiotic microorganisms with a role in plants mineral nutrition on mining soils are being conducted under several joint programmes(1). The research shows that Serianthes calycina, a leguminous plant that was giving the best results in terms of growth, nitrogen input and the establishment of a range of other species in its shade, lives in symbiosis with Brachyrhizobium, a bacteria that has some strains particularly good at fixing nitrogen. As regards symbiosis between plants and mycorrhizae – fungi that colonise plant roots – the research has shown that tree species of the genuses Gymnostoma (Casuarinaceae family) and Araucaria (Araucariaceae) have root nodules whose presence could promote regeneration of the forest ecosystem. The researchers have also discovered symbioses between several pioneer species of the Myrtaceae family and fungi new to science. Contacts Tanguy.Jaffre@noumea.ird.nc Bernard.Dreyfus@mpl.ird.fr A NATIONAL TECHNOLOGY RESEARCH CENTRE LE POINTAND DE VUE ON “NICKEL THE D’UN PARTENAIRE ENVIRONMENT” These results, based on characterising and utilising symbiotic components of local biodiversity will help to improve the restoration of degraded sites, with planted or sown species being inoculated with the most efficient strains of the microorganisms isolated. Accelerating and amplifying colonisation of bare ground by vegetation should reduce costs and so make it possible to treat larger areas. D © IR /Wir rma As announced by the Deputy Minister for Research at the New Caledonia Research Conference in August 2004, a National Technology Research Centre on Nickel and the Environment is soon to be created. nn With nickel ore prospecting and mining increasing and more mining companies involved, the aim of the research centre is to promote mining in a sustainable development perspective and to structure collaboration between public sector research laboratories and major companies. National new research centre will improve knowledge of the parent rock and optimise the revegetation process. (1) Research involving the IRD, the joint research unit UMR CNRS 5557 of the University of Lyon 1, INRA, the Ecole Nationale Supérieure Agronomique in Montpellier, the University of New Caledonia, the New Caledonia Institute of Agronomy and CIRAD. Contact Fabrice Colin dir.noumea@noumea.ird.fr © IR D / T. J affr è 19 Living Rourc FISH UNDER ENVIRONMENTAL PRESSURE Different fish species respond differently to natural or man-made changes to environmental conditions. Some species show remarkable physiological adaptations, such as resistance to salinity or pollution. Others can modify their reproductive or growth mechanisms to survive in places where less adaptable species die out. Examples of this are dwarfism and early sexual maturity. The effects of these disturbances are seen on individuals and on populations structure. Though often reported, these adaptive responses are poorly understood. IRD scientists and their Senegalese and Gambian partners in West Africa are comparing phenomena in the Gambia estuary and the Sine Saloum in Senegal. Although geographically close, the two areas have different hydrological conditions and ecosystems. The Gambia estuary has normal salinity and has not suffered major natural or man-made alterations, whereas the Sine Saloum is a ‘reverse estuary’ where salinity is very high at the upstream end. The goal is to measure the effects of hypersalinity on species and populations and identify their response thresholds, in order to identify biological indicators for assessing the health of these ecosystems. Two fish species, a tilapia (Sarotherodon melanotheron) and the Bonga shad (Ethmalosa fimbriata), were chosen as complementary biological models. These fish are able to live in waters as hypersaline as those found upstream in the Saloum, mainly by modifying their 20 reproductive cycle and growth. Sexually mature males and females of both species are smaller in the most saline parts of the Saloum than in the Gambia estuary. This feature, which is linked to other biological characteristics, reflects a response to environmental constraints. Contact Raymond.Lae@ird.fr IRD scientists also assessed the impact of fishing pressure on the organisation of fish populations in the two estuaries. Annual monitoring of fish catches and landings show that in the Gambia estuary (taken here as the reference environment), fishing focuses mainly on prawn. Wide-mesh nets and long-lines are used, but only for large species. Such specialised fishing under-exploits the estuary’s fish resources, suggesting that in this case fishing cannot be regarded as a major disturbance to the ecosystem. The information gathered about river, lake, lagoon and estuary ecosystems in West Africa is stored in databanks used directly for statistical analysis or as input for models to assess the extent of change to food chains caused by hypersalinity. These results have been achieved through close collaboration between the IRD and its Senegalese and Gambian partners, particularly through supervision of some twenty students. © IR D /E -C D o m in iq u e /M © IR D n . L e ge dre Living Rourc CONTROLLING SOIL SALINISATION In the mid-twentieth century, the soils of northeastern Thailand’s inland seasonal wetlands started to become saline; massive deforestation at that time caused saline groundwater to rise to shallow depths. At first, areas of some hundred square metres appeared where rice could no longer grow; then these areas spread to cover entire wetlands. Thai researchers had tested all the conventional methods for controlling land salinisation, in vain, but there were some farmers who managed to keep higher-thanaverage yields on their farms by a traditional combination of irrigation management and organic inputs. In 2001, the Department of Rural Development at the Thai agriculture ministry and some farm cooperatives started a programme to improve understanding of the processes involved in salinisation and find the scientific basis for the villagers’ traditional practices. One farm using salinity control methods and one using traditional methods were compared, while the properties of soil and soil solution on each farm being monitored for three years. In 2004 the results were reviewed, revealing an original situation and showing the vulnerability of the current rice farming system. The water management methods of the traditional system partly desalinate the top ten centimetres of soil, while the soil beneath remains too salty for roots to spread. The study also shows that salt accumulating on the surface is not only caused by salt water rising by capillary action in the dry season, but also, as measurements of geophysical factors and solute flows showed in some places, by salt water rising from deep levels during the wet season, as with an artesian spring. It is probable that this water under pressure is in balance with groundwater on the slopes, and that the saline areas overlie fractures in the rock beneath. These are important findings for salinisation control. It is not simply a matter of preventing salt from rising in the dry season and desalinating when the wet season starts; the rise of saline water must also be controlled during the wet season. The traditional water management methods do this, using every means possible to maintain a sheet of water on the fields throughout the cropping season. For rice roots to grow properly, soil acidity also has to be neutralised. The scientists found that these soils, which are acid in the dry season, are often neutral when covered by a sheet of water, owing to the action of soil microorganisms. A study is now under way, in collaboration with the University of Paris XI Orsay, to discover whether the traditional inputs of organic matter on saline patches may primarily serve to stimulate microorganism activity rather than to add crop nutrients as is usually the case. © IR D /J -L . M a eght A PARTNER’S VIEWPOINT Dr. Yupa Hanboonsong, DIRECTOR, OFFICE OF INTERNATIONAL A G R I C U LT U R E , UNIVERSITY OF KHON KAEN ©I RD /J- L. M aeg Over the years, the Agriculture Faculty at the University of Khon Kaen had developed an informal collaboration with the IRD, particularly in the form of scientific exchanges of students and researchers. To structure the partnership, in 2004 a four-year project was set up, jointly funded by the French and Thai governments. The project is based on collaboration between a network of Thai universities coordinated by the University of Khon Kaen and a network of French research institutes co-ordinated by the IRD. The aim is to enable French and Thai scientists to work together on common issues and on problems that concern both countries. This arrangement could serve as a model in other sectors, so strengthening research in Thailand. ht Contact Roland.Poss@mpl.ird.fr 21 Contact yupa_han@kku.ac.th Rourc vivant 22 Socii and Health Department SOCIETIES, HEALTH, DEVELOPMENT The IRD has 26 research units, 1 service unit and 6 joint research units working on social and health issues. Southern countries, especially the poorest, have to cope with endemic vector-borne diseases such as malaria, arboviruses, leishmaniasis and trypanosomiasis, and the persistence or emergence of such pathologies as AIDS, tuberculosis and meningitis. Access to simple, low-cost treatments is a leading health priority. As regards HIV, in 2004 IRD researchers, their Cameroonian partners and Doctors without Borders demonstrated for the first time that a fixed-dose generic retroviral triple therapy is both effective and well tolerated. In Thailand, a clinical trial performed with American and Thai researchers showed that the combination of a short AZT treatment with a single dose of nevirapine, another anti-viral drug, reduces the risk of mother-to-baby HIV transmission from 6% to less than 2% (without treatment, the risk is 35%). Counterfeit drugs are another health problem. A survey in Cameroon revealed that selfmedication against malaria favours an increase in the number of treatment-resistant parasites and hence treatment failures and wasted healthcare expenditure. On the topic of access to natural resources, the IRD conducted multidisciplinary research on the social, economic and environmental impact of protected areas. Meanwhile researchers studying marine and terrestrial biodiversity and ethnopharmacology isolated anti-malarial substances in New Caledonian sponges. In research aiming to reduce nutritional deficiencies, an IRD team working with national and Canadian scientists in Burkina Faso showed that consuming red palm oil reduces vitamin A deficiency in women and children. Globalisation and social change On the public policy side, the IRD analyses poverty and inequality reduction measures in terms of both macro- and micro-economics. Educational and public health policies were examined in 2004 from the standpoint of children’s school performance and school dropout rates, access to health systems and family planning. D/ © IR M.-N i . F av er Other IRD researchers were conducting indepth research on the impact of armed conflict, in Africa particularly, from the standpoint of on displaced populations and refugees. Research in Colombia focused on issues of people mixed origin, multiculturalism and the place of «black communities» in the policy applied to «indigenous peoples». © IR D /C Contact dss@paris.ird.fr . Jour d ie r 23 A PARTNER’S VIEWPOINT Prof. Martin Akogbéto, P R O F. M A R T I N A K O G B É T O , DIRECTOR, CENTRE DE RECHERCHE ENTOMOLOGIQUE DE COTONOU (CREC) The use of insecticide-treated mosquito nets is an essential aspect of malaria control, and many countries have strategic plans for accelerating widespread use. But although the nets are effective in preventing mosquito bites, results so far have not matched the hopes placed in them. It may be that their use is hampered by practical attitudes and conditions of use. To find out, a network for socioanthropology applied to malaria prevention has set up a series of surveys in West Africa to identify socio-cultural indicators on the acceptability of mosquito nets and the reasons why people use them or reject them. We would like these surveys be run in as many countries and socio-cultural settings as possible, to identify people’s habits, tastes and expectations with regard to mosquito nets. That way we will be able to offer suitable types of net for different communities. Contact akogbeto@leland.bj Socii and Health Department IMPREGNATED MOSQUITO NETS: AN EFFICIENT WAY TO PREVENT MALARIA Malaria is a major health problem in many parts of the world, and in Africa, one child under five dies every second from this disease. According to Unicef, these lives could be saved by the use of mosquito nets impregnated with insecticide, which is currently the best way to reduce malaria mortality rates. One of the aims of the WHO malaria summit in Abuja, Nigeria, in April 2000, was to have 60% of populations at risk from malaria under impregnated mosquito nets by the end of 2005. This goal will probably not be met, but it does highlight the increasing importance of such protection and the need to spread the idea among the most severely affected communities. Medical entomologists from the IRD ran the first mosquito net impregnation scheme in 1983, in Burkina Faso, using a pyrethroid insecticide. This research continues, partly in response to growing need in high-risk countries and partly to counter pyrethroid resistance in the anopheles mosquito, vector of the disease, as quickly as possible. The Montpellier insect pest control laboratory (LIN, Laboratoire de Lutte contre les Insectes Nuisibles), a WHO collaboration centre, has helped to market impregnated mosquito nets that have lasting efficacy without need to re-impregnation. With the emergence of resistant species, the Institute’s scientists have developed the con- 24 cept of dual treatment of the nets, using two insecticides with different modes of action, either in a mixture or applied separately in a mosaic of patches. Applied as a mixture, the two insecticides act in synergy. This means that lower dosages can be used, reducing both the cost and the toxicity of the treatment. This method is a particularly suitable response to the difficult economic situations in many highrisk countries. It was assessed in the Montpellier laboratory and then in Côte d’Ivoire, Benin and Cameroon, in natural conditions, on both pesticide-resistant and sensitive populations of anopheles. ber /V. R o © IR D t This work has been facilitated by a malaria vector research network, the Anopheles Biology and Control network, established in 2003 by an IRD researcher. The network operates between four institutes, in Benin, Burkina Faso, Cameroon and Côte d’Ivoire, enabling scientists to address different entomological and epidemiological situations within the malaria endemic zone. © IR D /M Another promising line of research began in 2004, into combined use of repellents and insecticides. The IRD has filed a patent on this subject and tests should soon start in Benin. . Dukh a n Contact hougard@ird.fr lle c © IR D/ C. Be Socii and Health Department MARINE ORGANISMS MAY HOLD MEDICAL PROMISE With more than a million deaths a year from malaria, this parasite disease still has a major social and economic impact. Parasite resistance to conventional treatments such as chloroquine has rendered these drugs ineffective in many tropical regions. Although other antimalaria drugs have been discovered recently, there is an urgent need to find new compounds to combat this scourge because basic curative and preventive treatments are still lacking. IRD researchers and their partners have strengthened their collaboration to speed up the discovery of new drugs based on natural substances for several types of therapeutic purpose. Partners pool their sources of biodiversity and technologies for identifying active compounds. High-speed screening is used to put tens of thousands of samples of natural or synthetic compounds in contact with targets such as the characteristic enzymes and proteins of a particular disease-causing pathogen. Just as plants have provided numerous medical drugs, from aspirin and quinine to morphine and artemisinin, marine organisms are another vast reservoir of original molecules that could prove to have therapeutic properties. Marine organisms are hugely diverse, and so are the chemical compounds extracted from them. For example, more than 300 new substances of pharmacological interest have been identified so far in marine fauna from New Caledonia’s shallow waters and deep ocean. In collaborative work between scientists and industrial partners, three specific malaria targets were introduced in turn into the robot and over 45,000 extracts were screened for effects on them. Forty molecules proved to be active, three-quarters of them from marine organisms. About ten proved active in vitro, but no sufficiently significant anti-malaria action has so far been achieved in vivo. These are important results for pure research, however. The scientists have identified molecules which, in vitro, can prevent proteins vital to the parasite from functioning. They come from marine sponges, some of which are abundant in the deep waters of New Caledonia. These natural substances can now be used to compare the activity of human and parasite proteins, and will serve as prototypes for synthesising and optimising new compounds until a compound with real therapeutic potential is produced. lch er © IR D/ E. Fo A PARTNER’S VIEWPOINT Liberto Yubero and François Amalric, PIERRE-FABRE-CNRS STEERING COMMITTEE © IR D /A . L h u il li Identifying compounds of therapeutic interest among marine and terrestrial natural substances is a shared objective of Pierre Fabre Médicament, the IRD and the CNRS. In 2001 the partners signed a tripartite agreement for joint research to identify molecules active against malaria, cancer or cardiovascular or central nervous system diseases. The IRD’s support in the field was decisive for gaining access to French Guiana’s biodiversity and New Caledonia’s marine organisms. Thanks to the IRD scientists’ skills in extracting and identifying marine natural substances we have discovered new molecular tools for pure research, into cancer and malaria particularly. er Contacts Liberto.yubero@pierre-fabre.com amalric@ipbs.fr Contacts nepveu@cict.fr cecile.debitus@ird.fr bou /P. L a © IR D te 25 A PARTNER’S VIEWPOINT Margarita Estrada, A N T H R O P O L O G I S T, C E N T R O D E INVESTIGACIONES Y ESTUDIOS SUPERIORES EN ANTROPOLOGÍA (CIESAS) Thanks to our collaboration with the IRD we were able to bring a comparative dimension to the programme in Guanajuato State, for example by organising an international seminar entitled «Globalisation areas» in June 2004. Forty-seven well-known experts and researchers – economists, sociologists, geographers and political scientists – met in the capital of Guanajuato State to compare the local and regional impacts of globalisation, based on field studies in Latin America, Asia and sub-Saharan Africa. The conclusions show that local development models differ and argue for a multidisciplinary approach to this diversity, will be published in 2005 under the imprimaturs of both institutions. Another outcome of the collaboration is the publication, in French and Spanish, of a book comparing experiences of change in industry in Mexico, Brazil and India. Student training was also a major concern of the partnership; this was achieved through our centre’s new «Global-Local» research focus. Contact mei@juarez.ciesas.edu.mx Socii and Health Department SOCIAL AND ECONOMIC CHANGE IN MEXICO The transformation of businesses and means of production in small towns in southern countries is closely linked to changes in political, economic, sociological and geographical determinants. In Mexico, a research programme began in 2001 under the title «Entrepreneurs, globalisation and reorganisation of production in the State of Guanajuato». Its aim is to analyse changes in the centre-west of the country caused by the policy of opening up trade and the intensification of world competition. The five towns studied are part of Guanajuato State industrial corridor, and each has well-established specialisations: leather and footwear, the motor industry, agri-food and textiles, oil and petrochemicals, mechanics and food processing. Rural municipalities were also studied; country people have set up huge numbers of small workshops as an indispensable adjunct to farming, which is jeopardised by liberalisation. The analysis sheds light both on changes in production in each town over the past 20 years and on changes in local business circles, among the key players in the current reorganisation. The surveys revealed the way very small operators in several traditional sectors, especially footwear and garments, are resisting competition (legal or illegal) from Asian produce. Overall, the informal sector is holding up, both in job numbers and output volume, but at the cost of a devaluation of family labour, more recourse to short marketing circuits and sometimes delocalisation to rural areas where labour, especially women’s labour, is cheaper. In contrast, many small and medium businesses, 26 particularly in the footwear sector, have been unable to withstand international competition for lack of financial and relational resources. New, high-technology activities, often with North American capital, have started up in Guanajuato State in recent years. In the metalworking and motor mechanics industries they have regenerated the local productive fabric and maintained the State’s gross domestic product. But they have not helped to re-employ workers from earlier industrial sites, focusing instead on recruiting from rural areas. Influential business circles in Guanajuato play a decisive part in the restructuring of the urban manufacturing fabric made necessary by globalisation. They have reoriented their investments, for example converting the town of León into a service centre of regional importance. They started to become active in municipal and State-level political life in the 1980s, so generating synergy between their business strategies and local public policy. Their influence networks have spread to some of the country’s more important industrial centres and the United States. By lobbying they have attracted foreign capital, developed joint investments and so modernised the «top» end of the local production apparatus. ba ze e © IR D/ P. La © IR D /P. L a bazee Contact plabazee@yahoo.fr baz /P. L a © IR D ee Socii and Health Department 0 A I E A CC LA A Singapour Nias K A L I M A N T RIAU SUMATRA OUEST Siberut Bangka JAMBI es ld ipe ai ch aw Ar ent M Contacts Dominique.Guillaud@orleans.ird.fr hforest@rad.net.id S M I E D us about the past. Work on Nias island has shown that the introduction of metal, no more than three centuries ago, went hand in hand with a proliferation of megaliths. The Nias island research also touches on the relationship between technology and social organisation; as amply related by oral transmission, when iron was introduced there was fierce competition between groups to obtain the metal, resulting in a hierarchical ranking among the groups. The Sumatran research also confirmed a date of 9,000 years ago for the first human migrations, in caves all the way to the south of the island. Further West, an unexpected date of 12,000 years ago has been established for the settlement of Nias island. The first Neolithic settlements in the Nias highlands have been dated to 3,600 years ago, and metal age settlements have also been found there. In the highlands of southern Sumatra, combining excavation with anthropological and geographical approaches has enabled researchers to link the archaeological data with what today’s populations tell about their history and living space. This type of work sheds light on the ways in which communities construct their territories and identities – a crucial question today in an archipelago that is becoming more decentralised, with each region asserting its identity. Clearly, the quest for the past has its relevance for issues of present-day importance. 500 km SUMATRA NORD 0° No one has forgotten the tsunami that devastated the north coast of Sumatra at the end of 2004. With an event of such violence the obvious question is how often it has happened in the past and whether the next might be predictable. The region has often suffered natural disasters – volcanic eruptions, floods, wildfire and earthquakes. Such episodes may therefore be considered one of the factors that shape human settlement decisions. From archaeology we know that the fossilised traces of such events, unequal as they are in their destructiveness, are not always easy to read, and that their estimated impact on past societies is closely linked to those societies’ material cultures. In Sumatra, «plant-centred» societies that depended on forest resources for almost every need were widespread until recently, and this type of society leaves little trace of its existence, its activities or the disasters it suffers. To address the problem of interpreting ancient remains, in 2004 a joint research team involving the IRD and the Indonesian National Research Centre for Archaeology focused on existing Sumatran societies that have plantcentred cultures. On the island of Siberut off the Sumatran coast, bamboo and other plants are still widely used for building and for making weapons, tools, fabrics and everyday objects. Studied in the context of their manufacture and use, these objects shed light on the type of society and territoriality associated with such plant-based technologies. The organisation of space – collecting and hunting ranges, areas used for a group’s cultural life – also informs 400 L IT THE BETTER TO UNDERSTAND THE PRESENT 300 A RO ET ACEH 200 M D SUMATRA: REVEALING THE PAST, 100 Sumatra Sud BENGKULU © D. Guillaud, IRD. LAMPUNG reliefs (> 200 m) basses terres et pénéplaines Jakarta J A V A aires d'étude A PARTNER’S VIEWPOINT Dr. Harry Truman Simanjuntak, NATIONAL RESEARCH CENTRE FOR ARCHAEOLOGY (PUSBANG ARKEOLOGI), JAKARTA, INDONESIA /D © IR D . G u il la ud The joint Franco-Indonesian archaeology research programme we launched with the IRD in 2001 has completed its research topic on the ecology of human settlements in South Sumatra. We hosted an IRD researcher at our centre, and he greatly stimulated work here through feedback seminars in Indonesian, continuous student training at the University of Jakarta and valuable help in managing our newly uncovered archaeological collections. Excavations, prospecting and surveys of oral traditions have enabled us to identify new chronological milestones in the process of southern Sumatra’s settlement by humans. Our aim for the next few years is to extend this work to the small islands of western Sumatra, Siberut in the Mentawai Islands and Nias Island further north, where no archaeology has been done so far because of their isolation and the poor conservation of remains. On these islands we will be able to examine past and present spaces and trace far back into the past the settlement patterns of traditional societies in an equatorial forest environment. © IR D /D . G u il la u d 27 Contact truman@bit.net.id 28 PROFESSIONAL CONDUCT AND ETHICS Consultative Committee on professional conduct and ethics Chair Dominique Lecourt Professor of philosophy, Denis Diderot University (Paris 7) Key personalities from developing and emerging countries Rafael Loyola Diaz Researcher, Instituto de Investigaciones Sociales, Autonomous National University, Mexico Isabelle Ndjole Assouho Tokpanou Honorary President, Forum for African Women Educationalists, Cameroon, IRD staff members Sandrine Chifflet Research engineer, CAMELIA unit (UR103), Marseille Maurice Lourd Director, IRD Centre, Bondy François Simondon Director, Epidemiology and Prevention research centre, (UR 024), Montpellier Key personalities in European science Jean-Claude André Director, European Centre for Research and Advanced Training in Scientific Computation Roger Guedj Professor, joint director of the Bio-organic Chemistry Laboratory, CNRS-University of Nice Sophia Antipolis (UMR 6001) Vladimir De Semir Associate Professor of Science Journalism, Pompeu Sabra University, Barcelona at 1 July 2005 Based on its meetings with staff at IRD and its partner organisation, the Consultative Committee on professional conduct and ethics (CCDE) has produced a guide to good practice in research for development. About a dozen research projects were submitted to the Committee in 2004, as were questions concerning ethics in evaluation, partnership with Southern countries and free access to scientific knowledge. The Committee also took part in discussions with the ethics committees of other French institutions. Interview with Dominique Lecourt, Chair of the Consultative Committee on professional conduct and ethics (CCDE) - What were the main fields in which the Ethics Committee was consulted? When the committee started up in 2002, most of the projects submitted to it were in medicine and health. They were about epidemiological research, clinical trials, cohort studies, worrying diseases like AIDS and parasite diseases, and nutritional problems. Despite the wide range of the IRD’s work, it is not surprising that demand for an ethical opinion was concentrated in health-related areas, because it was in these fields that ethical issues first arose historically. These issues have been thought about and discussed internationally for more than forty years. However, in the past three years people have become more aware and are raising ethical questions in all fields of research. Now we are asked for opinions on environment, biodiversity and access to resources. – Does research in Southern countries call for a particular ethic? Research in partnership with Southern countries – countries with different histories, different cultures and forms of social organisation from ours – requires us to know about the other, listen to them, take their expectations into account and no doubt be particularly attentive to the ethical side, though perhaps not adopt a particular ethic. The Committee is holding a seminar in May 2005 at the Collège de France in Paris, where we will invite the scientific community to think about this question. It will certainly prompt much debate and require well-thought-out answers, which will be widely disseminated afterwards. concerning evaluation and access to scientific knowledge, for example. Also, research conducted in partnership can put a scientist in a situation where interests conflict, for example between the policy of the host country and the recommendations that follow from the results of the research. On all these questions arising from researchers’ day to day practice, the committee is regularly asked to reflect and offer partial answers that will help the research teams in their work. Contact ccde@paris.ird.fr - On the professional conduct side, what kinds of questions has the committee been consulted about? Deontology is about rules governing conduct in a given profession. The activities connected with a research institute’s various missions – research, consultancy, evaluation, training, communication – are based on precisely formulated rules. But it is not always easy to apply the rules, especially in an international situation where competition is fierce; so the committee has been consulted on questions 29