Technical field(s) of expertise: Purushothaman C. Abhilash is affiliated as a senior Assistant Professor of Sustainability Science in the Institute of Environment and Sustainable Development (IESD) at Banaras Hindu University in Varanasi, India, and leading the Agroecosystem Specialist Group of IUCN-Commission on Ecosystem Management. He is a fellow of the National Academy of Agricultural Sciences, India. His research interest lies on various inventive methods for restoring marginal, degraded and polluted lands for regaining ecosystem services, deriving additional benefits like biomass production for supporting a biobased economy, land system management, sustainable utilization of agrobiodiversity, nature-based solutions and ecosystem-based adaptations for climate-resilient and planet healthy food production, and sustainable agriscape management for food and nutritional security. He is particularly interested in system sustainability, circular economy principles, policy realignment and the localization of UN-SDGs for the sustainable development. He is sitting on the editorial board of prestigious journals on Ecology, Environment, and Sustainable Development from Elsevier, Springer-Nature, Wiley, and MDPI, and also serving as a subject expert for UN-IPBES, IRP- UNEP, UNDP-BES Network, IPCC, UNCCD, APN, GLP, and IUCN Commissions (CEM, CEC, CEESP, and SSC) for fostering global sustainability.

Technical field(s) of expertise: Disaster risk reduction

Technical field(s) of expertise:  Inventaire et analyse de la dynamique des espèces exotiques envahissantes  Étude des perceptions locales et engagement communautaire sur les espèces envahissantes  Évaluation prioritaire et gestion stratégique des espèces exotiques envahissantes  Développement et promotion de méthodes efficaces de lutte contre les espèces envahissantes  Éducation et sensibilisation aux meilleures pratiques de gestion des espèces exotiques envahissantes  Conception d’approches innovantes pour la gestion durable de la biodiversité et la valorisation des services écosystémiques  Gestion et valorisation des données biologiques d’herbiers  Analyse biostatistique appliquée à l’écologie  Utilisation des systèmes d’information géographique (SIG) pour l’analyse environnementale  Modélisation des dynamiques forestières et gestion durable des forêts  Application de la géostatistique pour l’analyse spatiale des écosystèmes

Technical field(s) of expertise: - Biodiversity and Ecosystem Services, - Climate and Land Use Changes. - Sustainable Development Perspective. Specialisation : Science-Policy Interfaces Management on BES for Nature Based Solutions including Innovative land Use for Climate Adaptation and Mitigation solutions

Technical field(s) of expertise: Biodiversity finance, environmental finance, environmental governance, biodiversity conservation

Technical field(s) of expertise: Geography, remote sensing, location-based social media, geoinformatics, cultural ecosystem services, non-material nature's contributions to people, mobility, cross-border commuting

Technical field(s) of expertise: IPBES expert, biodiversity, ecosystem services, transdisciplinary research, climate change, knowledge brokering, ecosystem assessments, scenarios, dialogues

Technical field(s) of expertise: Nature-based Solutions, Ecosystem restoration, Science-Policy-Practice -Interfaces, Climate-resilient food systems, Climate change adaptation, Biodiversity conservation, Ecosystem services, Sustainable agriculture, NDCs review, Protected areas, Climate finance, Water resource management & WASH, Carbon Market.

Technical field(s) of expertise: Environmental economics, natural capital accounting, trade & environment, climate change economics and Blue Economy. In general the economics of environmental policy including biodiversity-business-ecosystems

Technical field(s) of expertise: Ecosystem Services Assessment, Natural resources management, Agricultural Extension and Rural Development, Environmental Economics, Sustainable development Goals, water sustainability, wetland and river basin management