Browsing by Autor "Roberto Vides-Almonacid"

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    Análisis de las dinámicas socio-ecológicas de la Cuenca Zapocó : Informe sobre el Bosque Modelo Chiquitano (Bolivia) para el Deliverable 2.5 "Socio-Ecological Dynamics": Tarea 2.4
    (Centre de Coopération Internationale en Recherche Agronomique pour le Développement, 2013) Abigaïl Fallot; Maria-Teresa Aguilar; Roberto Vides-Almonacid; Jean-François Le Coq
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    Bolivian forests hold carbon storage potential
    (American Association for the Advancement of Science, 2025) Oswaldo Maillard; Roberto Vides-Almonacid
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    Building a shared representation of the landscape as a socio-ecological system and visualizing the challenges of climate-smart agriculture.
    (Centre National de la Recherche Scientifique, 2015) Abigaïl Fallot; Jean-François Le Coq; Julio Cesar Salinas; Teresa Amezcua Aguilar; Romy Cronenbold; Roberto Vides-Almonacid; Tahia Devisscher
    Climate threats exacerbate issues of natural resource management in rural landscapes, namely water, forest and agricultural land. In order to consistently address these issues, we highlight the usefulness of a joint vision of the landscape where the actors share their knowledge on the mechanisms at work when considering the central problem that affect the landscape as well as the proposed solutions. On the basis of several case studies, we present and analyze participatory conceptual modelling as a process and a series of methods that allow building a shared understanding of the landscape as a socio-ecological system. The case study that better illustrates the diversity of suitable methods and necessary adjustments in the modelling process, is the Zapoco watershed in the Chiquitano Model Forest (Bolivia), characterized both by its natural richness and its economic poverty. In the framework of the research-action EcoAdapt project for community-based adaptation at the landscape level, we reviewed the modelling approaches which better served our purpose and ended in the articulation of tools belonging to different approaches. As a main result, we obtained graphical representations that the actors can easily understand and use to describe their context (Open Standards for the Practices of Conservation), their practices (Problem-Actors-Resources-Dynamics-Interactions) and their history (Resilience thinking). In a practical way, the models built address the complexity of the landscape and bring into focus needs for research (knowledge gaps, main uncertainties) and for action (coordination failures, unsustainable dynamics). From the perspective of companion modelling, we finally discuss the outreach of participatory conceptual modelling in the promotion of climate smart agriculture.
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    Effect of Deforestation on Land Surface Temperature in the Chiquitania Region, Bolivia
    (Multidisciplinary Digital Publishing Institute, 2022) Oswaldo Maillard; Roberto Vides-Almonacid; Álvaro Salazar; Daniel M. Larrea‐Alcázar
    Neotropical forests offer alternatives to surface cooling and their conservation is an effective solution for mitigating the effects of climate change. Little is known about the importance of tropical dry forests for temperature regulation in Chiquitania, a region with increasing deforestation rates. The impact that deforestation processes are having on the surface temperature in Chiquitania remains an open question. This study evaluated trends in forest cover loss based on land surface temperatures (°C) in forested and deforested areas in Chiquitania. We hypothesized a positive relationship between higher deforestation and a temperature increase, which would decrease the resilience of highly disturbed Chiquitano forests. We evaluated ten sampling sites (10 × 10 km), including five in forested areas with some type of protection and the other five in areas with populated centers and accelerated forest loss. We developed scripts on the Google Earth Engine (GEE) platform using information from the Normalized Difference Vegetation Index (NDVI, MOD13A2) and the daytime and nighttime Land Surface Temperature (LST, MYD11A1) from MODIS products for the period 2001–2021. The statistical significance of the trends of the time series averages of the MODIS products was analyzed using a nonparametric Mann–Kendall test and the degree of the relationship between the variables was determined using the Pearson statistic. Our results based on NDVI analysis showed consistent vegetation growth in forested areas across the study period, while the opposite occurred in deforested lands. Regarding surface temperature trends, the results for daytime LST showed a positive increase in the four deforested areas. Comparatively, daytime LST averages in deforested areas were warmer than those in forested areas, with a difference of 3.1 °C. Additionally, correlation analyses showed a significant relationship between low NDVI values due to deforestation in three sites and an increase in daytime LST, while for nighttime LST this phenomenon was registered in two deforested areas. Our results suggest a significant relationship between the loss of forest cover and the increase in land surface temperature in Chiquitania. This study could be the first step in designing and implementing an early climate–forest monitoring system in this region.
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    Impact of Fires on Key Biodiversity Areas (KBAs) and Priority Bird Species for Conservation in Bolivia
    (Multidisciplinary Digital Publishing Institute, 2022) Oswaldo Maillard; Sebastián K. Herzog; Rodrigo Wilber Soria-Auza; Roberto Vides-Almonacid
    Key Biodiversity Areas (KBAs) are sites that contribute significantly to the protection of the planet’s biodiversity. In this study, we evaluated the annual burned areas and the intensity of the fires that affected Bolivia and its 58 KBAs (23.3 million ha) over the last 20 years (2001–2020). In particular, we analyzed the impact of wildfires on the distribution of Bolivian birds at the levels of overall species richness, endemic species and threatened species (Critically Endangered, Endangered, Vulnerable). We found that at the KBA level, the cumulative area of wildfires was 21.6 million ha, while the absolute area impacted was 5.6 million ha. The KBAs most affected by the wildfires are located in the departments of Beni and Santa Cruz; mainly in the KBAs Área Natural de Manejo Integrado San Matías, Oeste del río Mamoré, Este del río Mamoré, Noel Kempff Mercado and Área Natural de Manejo Integrado Otuquis. The wildfires impacted the distribution of 54 threatened species and 15 endemic species in the KBAs. Based on the results of this study, it is a priority to communicate to Bolivian government authorities the importance of KBAs as a strategy for the conservation of the country’s biodiversity and the threats resulting from anthropogenic fires.
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    Integridad del paisaje y riesgos de degradación del hábitat del jaguar (Panthera onca) en áreas ganaderas de las tierras bajas de Santa Cruz, Bolivia
    (2020) Oswaldo Maillard; Sixto Angulo; Roberto Vides-Almonacid; Damián I. Rumiz; Peter Vogt; Octavio Monroy‐Vilchis; Hermes Justiniano; Huáscar Azurduy; Roger Coronado; Claudia Venegas
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    Riesgos ambientales en las unidades hidrográficas de las serranías chiquitanas, departamento de Santa Cruz, Bolivia
    (2019) Oswaldo Maillard; Julio Cesar Salinas; Sixto Angulo; Roberto Vides-Almonacid