Copyright 2020 - copyright UMR ESPACE-DEV - 2017

Nos dernières publications - Juillet 2020

icone documentation publication

  1. Braud I., Chaffard Véronique, Coussot Charly, Galle Sylvie, Juen P., Alexandre H., Baillion P., Battais A., Boudevillain B., Branger F., Brissebrat G., Cailletaud R., Cochonneau Gérard, Decoupes R., Desconnets Jean-Christophe, Dubreuil A., Fabre J., Gabillard S., Gerard M. F., Grellet S., Herrmann A., Laarman O., Lajeunesse E., Le Henaff G., Lobry O., Mauclerc A., Paroissien J. B., Pierret M. C., Silvera Norbert, Squividant H. (2020). Building the information system of the French Critical Zone Observatories network : Theia/OZCAR-IS. Hydrological Sciences Journal = Journal des Sciences Hydrologiques, [Early access].

    http://dx.doi.org/10.1080/02626667.2020.1764568

    WOS:000542864400001

    The French Critical Zone research infrastructure, OZCAR-RI, gathers 20 observatories sampling various compartments of the critical zone, each having developed their own data management and distribution systems. A common information system (Theia/OZCAR IS) was built to make theirin situobservation FAIR (findable, accessible, interoperable, reusable). The IS architecture was designed after consultation of the users, data producers and IT teams involved in data management. A common data model based on various metadata standards was defined to create information fluxes between observatories' ISs and the Theia/OZCAR IS. Controlled vocabularies were defined to develop a data discovery web portal offering a faceted search with various criteria, including variables names and categories that were harmonized in a thesaurus published on the web. This paper describes the IS architecture, the pivot data model and open-source solutions used to implement data discovery, and future steps to implement data downloading and interoperability services.

    Affiliation IRD : UMR 252 (IGE) ; UMR 113 (CESBIO) ; (sans mention d'UMR) ; UMR 234 (GET) ; UMR 228 (ESPACE-DEV) ; UMR 144 (LISAH) ; UMR 242 (IEES-Paris)

    Lien Horizon FDI : http://www.documentation.ird.fr/hor/fdi:010079116

    Descr. géo. Horizon : FRANCE

  2. Cissoko M., Sagara I., Sankare M. H., Dieng S., Guindo Abdoulaye, Doumbia Z., Allasseini B., Traore D., Fomba S., Bendiane M. K., Landier Jordi, Dessay Nadine, Gaudart J. (2020). Geo-epidemiology of malaria at the health area level, Dire health district, Mali, 2013-2017. International Journal of Environmental Research and Public Health, 17 (11).

    http://dx.doi.org/10.3390/ijerph17113982

    WOS:000542629600235

    Background: According to the World Health Organization, there were more than 228 million cases of malaria globally in 2018, with 93% of cases occurring in Africa; in Mali, a 13% increase in the number of cases was observed between 2015 and 2018; this study aimed to evaluate the impact of meteorological and environmental factors on the geo-epidemiology of malaria in the health district of Dire, Mali. Methods: Meteorological and environmental variables were synthesized using principal component analysis and multiple correspondence analysis, the relationship between malaria incidence and synthetic indicators was determined using a multivariate general additive model; hotspots were detected by SaTScan. Results: Malaria incidence showed high inter and intra-annual variability; the period of high transmission lasted from September to February; health areas characterized by proximity to the river, propensity for flooding and high agricultural yield were the most at risk, with an incidence rate ratio of 2.21 with confidence intervals (95% CI: 1.85-2.58); malaria incidence in Dire declined from 120 to 20 cases per 10,000 person-weeks between 2013 and 2017. Conclusion: The identification of areas and periods of high transmission can help improve malaria control strategies.

    Affiliation IRD : (sans mention d'UMR) ; UMR 216 (MERIT) ; UMR 228 (ESPACE-DEV) ; UMR 259 (SESSTIM)

    Copublication Sud avec : Mali

    Lien Horizon FDI : http://www.documentation.ird.fr/hor/fdi:010079146

    Descr. géo. Horizon : MALI ; DIRE REGION

  3. Defrance Dimitri, Catry Thibault, Rajaud A., Dessay Nadine, Sultan Benjamin. (2020). Impacts of Greenland and Antarctic Ice Sheet melt on future Koppen climate zone changes simulated by an atmospheric and oceanic general circulation model. Applied Geography, 119.

    http://dx.doi.org/10.1016/j.apgeog.2020.102216

    WOS:000541867800001

    Climate change studies in recent decades have been based on Global Climate Models (GCMs), and the changes in the distribution of climatic regions over time extracted from these models can be represented using the Koppen climatic classification system, which predicts the global distribution of biomes based on monthly precipitation and average temperatures. In this study, the Koppen classification is used to evaluate the impacts of the melting of the Greenland and Antarctic Ice Sheets on GCM simulation results, on regional and global scales. To assess the impacts of accelerated ice sheet melting, an approach is utilized which is based on numerical simulations from the IPSL-CM5A-LR GCM; here, freshwater is introduced near the ice sheets and is superimposed on the RCP8.5 scenario. The changes in the distribution of the Koppen climatic regions under various scenarios (a historical run from observations, RCP8.5, and various examples of polar ice sheet melting) and comparisons between them reveal that major changes will occur on the global scale during the period 2041-2060. The analysis of group shifts within the Koppen classification system reveals that when freshwater from Greenland or Antarctica is introduced into the ocean, the inter-tropical belt undergoes greater change than it does under the RCP8.5 scenario. A focus on sub-group shifts within the Koppen classification system shows that changes in precipitation have major impacts on the climate in the Southern Hemisphere. Further, the changes are more drastic if the freshwater originates from Greenland than from Antarctica or from both locations. However, changes in temperature strongly impact the climate in the Northern Hemisphere and are significantly affected by the melting of the Greenland Ice Sheet. This study highlights the importance of considering ice sheet melting in the modeling of future global climate.

    Affiliation IRD : UMR 228 (ESPACE-DEV)

    Lien Horizon FDI : http://www.documentation.ird.fr/hor/fdi:010079119

    Descr. géo. Horizon : MONDE ; GROENLAND ; ANTARCTIQUE

  4. Do Vale I., Miranda I. S., Mitja Danielle, Santos A. M., dos Santos G. G. A., Leao F. M., Oliveira M. G., Costa L. G. D. (2020). Conservation potential of shade-tolerant forest species in agricultural mosaics in the eastern Brazilian Amazon. Acta Amazonica, 50 (2), 124-132.

    http://dx.doi.org/10.1590/1809-4392201902772

    WOS:000541901000005

    Shade-tolerant forest species are among the most susceptible to habitat loss in agricultural mosaics, where a variety of croplands is connected to forests at different levels of anthropogenic disturbance. We aimed to evaluate the community similarity of shade-tolerant species among different land use types across agricultural mosaics with different levels of disturbance. The study was conducted in three municipalities in southern and southeastern Para state, in eastern Amazonia. A multiple-community similarity measure based on the Horn similarity index was used to compare land use types and assess the resilience of shade-tolerant species towards forest loss and disturbance at the landscape level. High shade-tolerant species similarity was found between mature forest fragments that underwent different levels of disturbance in all three agricultural mosaics, but secondary forests had lower similarity with mature forest in the most fragmented and altered mosaic. Shade-tolerant species showed very low density in croplands, but the same group of species seemed to colonize agricultural fields of annual crops and clean pasture, as they showed high community similarity. Another group of species was present in invaded pastures, probably due to the effects of time since land abandonment after woody species colonization. Mixed tree plantations were more similar to mature and secondary forests than other types of croplands. Shade-tolerant species similarity was higher among land use types inserted in agricultural landscapes that maintained conserved forest fragments. Our results suggest that the conservation of mature forests and landscape connectivity are crucial to the maintenance of shade-tolerant species in agricultural mosaics.

    Affiliation IRD : UMR 228 (ESPACE-DEV)

    Copublication Sud avec : Brésil

    Lien Horizon FDI : http://www.documentation.ird.fr/hor/fdi:010079118

    Descr. géo. Horizon : BRESIL ; AMAZONIE ; PARA

  5. Karcher D. B., Fache Elodie, Breckwoldt A., Govan H., Ilosvay X. E. E., Kon Kam King Juliette, Riera Léa, Sabinot Catherine. (2020). Trends in South Pacific fisheries management. Marine Policy, 118.

    http://dx.doi.org/10.1016/j.marpol.2020.104021

    WOS:000541263600018

    While categorized as Small Island Developing States, South Pacific Island nations are the custodians of major ocean areas containing marine resources of high commercial and environmental significance. Yet, these resources are threatened by climate change, overfishing, Illegal, Unreported and Unregulated (IUU) fishing, as well as habitat destruction. The study, carried out in the early stage of the interdisciplinary research project SOC-Pacific (

    Affiliation IRD : UMR 220 (GRED) ; UMR 228 (ESPACE-DEV)

    Copublication Sud avec : Fidji

    Lien Horizon FDI : http://www.documentation.ird.fr/hor/fdi:010078813

    Descr. géo. Horizon : FIDJI ; NOUVELLE CALEDONIE ; VANUATU ; PACIFIQUE

  6. Shabtay A., Lagabrielle Erwann, Plot V., Potin G., Guyomard D. (2020). Marine spatial planning provides a comprehensive framework for building evidence-based shark risk management policies with sea-users. Environmental Science and Policy, 111, 18-26.

    http://dx.doi.org/10.1016/j.envsci.2020.05.014

    WOS:000540245400003

    Marine spatial planning (MSP), a process aimed at negotiating the spatial allocation of human activities at sea, has to integrate new challenges arising from growing human activities and their impacts on threatened marine ecosystems. Yet, human-wildlife interactions that result in threat to humans are rarely explicitly addressed in planning and almost not at all in MSP. Rare events of unprovoked shark bites can significantly impact local economies while leading to polarized social debates that often hinder the development of evidence-based shark risk public policy. Here, we suggest an approach for integrating shark risk and its management into MSP. The method addresses simultaneously the spatial, social, and ecological components of shark risk and its inherent uncertainties. The approach is applied on Reunion Island case study where shark risk management is implemented as a response to a rapid increase in the frequency of shark bite events over the past decade. Similar to other countries where shark risk management is implemented, sharks' removal is in the heart of social debate in Reunion Islands (3860 shark fishing operations in 5 years) and data gaps provide a fertile ground for alternative discourses and social conflicts about shark risk. Through a structured public consultation involving 200 stakeholders we demonstrate how MSP can be used to address shark risk while considering multiple sea-uses and conservation objectives. The results suggest that the approach is ideal, both for integrating shark risk as a driver to the MSP process, and for developing a transparent, sustainable and evidence-based shark risk public policy as it places shark risk management within a broader social-ecological spectrum of stakes.

    Affiliation IRD : UMR 228 (ESPACE-DEV) ; UMR 250 (ENTROPIE)

    Lien Horizon FDI : http://www.documentation.ird.fr/hor/fdi:010078223

    Descr. géo. Horizon : REUNION

  7. Tritsch Isabelle, Le Velly G., Mertens Benoît, Meyfroidt P., Sannier C., Makak J. S., Houngbedji K. (2020). Do forest-management plans and FSC certification help avoid deforestation in the Congo Basin ?. Ecological Economics, 175.

    http://dx.doi.org/10.1016/j.ecolecon.2020.106660

    WOS:000539110100008

    To allow for the production of timber while preserving conservation values, forestry regulations in the Congo Basin have made Forest Management Plans (FMP) mandatory in logging concessions. This paper uses original high-resolution maps of forest-cover changes and official records on the activities of logging concessions to analyze the impact of FMP on deforestation in this region. We apply quasi-experimental and difference-indifference approaches to evaluate the change in deforestation in concessions managed under an approved FMP. We find that between 2000 and 2010, deforestation was 74% lower in concessions with an FMP compared to others. Building on a theory of change, further analyses revealed that this decrease in deforestation takes time to occur and is highest around communities located in and nearby logging concessions, and in areas close to previous deforestation. These findings suggest that FMP help avoid deforestation by allowing logging companies to rotate cycles of timber extraction, thereby avoiding the overexploitation of areas that were previously logged, and by the better regulation of access to concessions by closing former logging roads to limit illegal activities such as shifting agriculture, hunting and the illegal harvest of timber or fuel-wood.

    Affiliation IRD : UMR 228 (ESPACE-DEV) ; UMR 260 (LEDa)

    Copublication Sud avec : Gabon

    Lien Horizon FDI : http://www.documentation.ird.fr/hor/fdi:010078195

    Descr. géo. Horizon : CAMEROUN ; CONGO ; GABON ; CENTRAFRICAINE REPUBLIQUE ; CONGO BASSIN

 

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