David Blanchon
Tipping point and sentinels : monitoring, interpreting and managing environmental changes in southern Arizona
This research project aims at linking two concepts, “tipping points” and “sentinels”, which are highly debated in the scientific literature. Its originality is to combine a range of approaches, from ecology to social and behavioral sciences.
The research will focus on three case studies in Pima County: the spread of buffelgrass at Tumamoc Hill; the effects of urban extension and mining planning on water resources in Eastern Tucson watershed; and the development of wine-growing industry in the face of climate change. Based on empirical findings, the project will provide new insights into the role of tipping points and sentinels in assessing and managing environmental changes.
Type de projet
Projet OHM
OHM(s) concerné(s)
  • Pima County
Anthropologie, Biologie, Géographie, Socio-anthropologie


D. Blanchon travaille depuis maintenant de longues années sur les thèmes de la gestion de l’eau, notamment à travers son projet IUF « Hydrosystèmes et hydropolitiques en Afrique ». Il est également membre fondateur du Res-Eaux (https://reseaux.parisnanterre.fr/). Si ses recherches ont porté essentiellement sur l’Afrique, il a également publié des textes et organisé des conférences à portée plus théorique, comme par exemple l’International seminar on Science and ‘Engagement’ in Water Studies. Les Etats-unis sont un nouveau terrain, mais familier par des lectures, également des séjours de recherche, à l’Université de Yale (en tant que lecteur de français, 1997-1998) et à Berkeley (2013) dans le cadre de sa délégation IUF. Il a été très récemment membre du groupe de réflexion portant sur la question de la solidarité écologique, porté par le Ministère de la Transition écologique et solidaire et l’Agence Française de la Biodiversité.


Regis,Benjamin,Adriana,Frédéric,Stéphane,Marie-Blanche Ferrière,Wilder,Zuniga-Teran,Keck,Tonnelat,Roudaut
Régis Ferrière is Director of the iGLOBES International Research Laboratory, with a split appointment between ENS Paris (Biology departemnt) and the University of Arizona (department of Ecology and Evolutionary Biology). Ferriere is a mathematical ecologist who studies how adaptive evolution shapes the structure, dynamics and function of ecological systems. Ferrière discovered the role that adaptive evolution may play in driving ecological systems towards tipping points. In his current work at the interface of mathematical ecology, sociology, and psychology, he and his lab explore the determinants of human behavioral response to climate change and climate extremes.
Regis,Benjamin,Adriana,Frédéric,Stéphane,Marie-Blanche Ferrière,Wilder,Zuniga-Teran,Keck,Tonnelat,Roudaut
Benjamin Wilder is Director of the Desert Laboratory on Tumamoc Hill as well as a desert ecologist. His work aims to establish ecological baselines to inform conservation and management decisions. He has extensive experience in buffelgrass control and management as well as understanding this invasive species in the context of global climate change and increased connectivity due to globalization
Regis,Benjamin,Adriana,Frédéric,Stéphane,Marie-Blanche Ferrière,Wilder,Zuniga-Teran,Keck,Tonnelat,Roudaut
Adriana Zuniga-Teran is an Assistant Research Scientist at the University of Arizona’s Udall Center for Studies in Public Policy and the School of Landscape Architecture and Planning. With a background in architecture and expertise in neighborhood design, Adriana combines knowledge-building with problem-solving of real-world challenges in her research projects. Adriana works with stakeholders and community partners to answer questions related to water security, urban resilience, and environmental justice, by focusing on greenspace/green infrastructure across the urban-rural continuum.
Regis,Benjamin,Adriana,Frédéric,Stéphane,Marie-Blanche Ferrière,Wilder,Zuniga-Teran,Keck,Tonnelat,Roudaut
Frédéric Keck is a senior researcher at the CNRS. He has published a series of works on the history of French anthropology in its relations with philosophy (Comte, Lévy-Bruhl, Durkheim, Bergson, Lévi-Strauss). He also worked with P. Rabinow on the concept of biopower. He carried out ethnographic surveys on animal health crises: BSE, SARS, “bird flu” and “swine flu”. His work, at the crossroads of the history of science, the sociology of risks and the anthropology of nature, focuses more generally on standards of “biosecurity” applied to humans and animals, and on the forms of forecasting that they produce regarding health and ecological disasters.
Regis,Benjamin,Adriana,Frédéric,Stéphane,Marie-Blanche Ferrière,Wilder,Zuniga-Teran,Keck,Tonnelat,Roudaut
Stéphane Tonnelat is a research fellow at CNRS and currently Deputy Director of UMR LAVUE. He conducts ethnographic work on various types of urban public spaces in Paris and New York. Its main areas are the urban interstices (abandoned land, wastelands), parks and gardens, the metro and the ferry. He is also co-editor of the online magazine Metropolitiques. As part of his research on the environment, he has worked with Samuel Bordreuil and Anne Lovell on a project to study audiences for the reconstruction of New Orleans since Hurricane Katrina.
Regis,Benjamin,Adriana,Frédéric,Stéphane,Marie-Blanche Ferrière,Wilder,Zuniga-Teran,Keck,Tonnelat,Roudaut