M2 - Chronological Environments and Paleoecology (CEPAGE)

The objective of this course unit is to facilitate the implementation of the projects defined as part of the M1S2 course unit.

Summary of the learning unit:

- Independent work supervised by student groups: readjustment of project objectives and methodology as needed; data collection; ecological and/or evolutionary analyses and interpretations in accordance with the tentative schedule established in M1S2; presentation of results at a joint symposium for the various tracks.

Assessment Procedures:

As with the M1 course, this course is based on a problem-based learning approach. Students are therefore assessed on an ongoing basis based on their progress in completing their project (40% of the grade), and then at the end of the semester on their ability to present and discuss their project results during an oral presentation at a general project presentation session (60% of the overall grade).

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This unit focuses on analyzing the impact of human activity on the climate and the environment

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Present various methodological approaches in an applied context, from data collection through interpretation. Each approach is covered over half a day (3 hours), focusing on data collection methods (1.5 hours of lab work) and the interpretation of results (1.5 hours of tutorial).

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"The objective of this course is to present and explain the concepts, issues, operational approaches in the field and in the laboratory, and methodological and analytical strategies used to infer and reconstruct fluctuations in wild and human-exploited biodiversity over time. It draws on empirical and modeled datasets from the fields of ecology, paleoecology, paleobiogeography, archaeobiology, archaeology, and paleethnobiology. Particular attention will be paid to:

- the functional role of ecological disturbances, such as wildfires, in changes to vegetation cover;

- the impact of changes in human societies on the dynamics of forest ecosystems;

- the use, cultivation, and domestication of plants and animals based on the analysis of modern and bioarchaeological data."

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The goal of this course unit is to support students in developing their career plans and searching for internships, while helping them begin to prepare for their transition into the workforce by providing a comprehensive yet personalized overview of possible career paths.

Specifically, sessions with various stakeholders provide an opportunity to present the doctoral thesis (a presentation by the GAIA doctoral school, presentations by doctoral students) and to explore the professional opportunities targeted by the different tracks (research careers and the non-academic sector). Activities specific to each track then help students better identify the scientific fields most closely aligned with their career goals. Finally, tutorial sessions are designed to prepare students for writing scientific articles in English.

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In this course unit, we will explore the main theoretical concepts of evolutionary processes as reflected in the fossil record. We will focus on reconciling microevolutionary and macroevolutionary mechanisms. The concepts covered will include: species and intraspecific variability, speciation and the rates of evolution, adaptive radiations (ecological speciation) in the fossil record, targeted extinctions (competition between migrants and native species) or mass extinctions (major biological crises), evolutionary modes (anagenesis and saltationism) observed in the fossil record, and a comprehensive review of microevolutionary mechanisms.

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The goal of this resolutely transdisciplinary course is to provide the skills necessary for the effective management and meaningful use of data from various sources and of various types, particularly data with a spatial component. The course consists of three complementary, sequential modules. The first addresses the challenges inherent in data compilation and the solutions provided by database management systems (DBMS): from database design to queries. The second focuses on geographic information systems (GIS): from cartographic representation to geoprocessing. Finally, the third area presents the diversity of spatial analysis tools that enable the quantitative exploitation of spatial data, whether through metrics or statistical tests.

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The educational objective of this course unit is to provide an overview of the major soil types on a global scale, explain their formation, and identify the mineral phases or primary abiotic factors that may regulate biological activity in soils. Based on this analysis, the various soil organisms (microorganisms, micro-, meso-, and macrofauna) will be presented, along with their interactions, in order to contextualize the cycles of organic matter and mineral elements in the soil across different temporal and spatial scales. The concepts of recycling, the closure of biogeochemical cycles, and the principles governing community assembly will also be addressed. This course unit is organized around lectures and presentations, as well as tutorial sessions and fieldwork.

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"The objective is to analyze the phylogenetic, developmental, and functional constraints that may have governed the morphological changes observable in the fossil record. The phylogenetic approach will be addressed using reconstruction methods applicable to fossils (parsimony; cladistic analysis). The developmental and functional approaches (primarily odontology) will be illustrated using various methodologies developed on the Montpellier campus (notably X-ray microtomography). A critical review of key articles in the field will be presented orally, followed by a question-and-answer session."

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Land-use changes account for approximately 10% of anthropogenic carbon dioxide emissions. Tropical forest ecosystems can contribute to both pillars of addressing climate change—namely, mitigation and adaptation:

-Tropical forests and plantations are significant potential carbon sinks; their biomass can provide energy as a substitute for fossil fuels, while reducing deforestation and forest degradation and improving forest management (REDD+) can significantly reduce anthropogenic GHG emissions

-The ability of human societies—which are still predominantly rural—to adapt to climate change depends in part on the state of available natural resources, while the necessary adaptation of tropical ecosystems to climate change can be facilitated by human interventions.

As part of the implementation of the United Nations Framework Convention on Climate Change, mechanisms such as the Clean Development Mechanism (CDM) and REDD+, along with voluntary markets and ecosystem-based adaptation, provide new opportunities for tropical forestry, as well as a potential lever for the protection or restoration of tropical forests. This module provides an understanding of the basic concepts of climate change, the role of tropical ecosystems in the global carbon cycle, and the technical, political, and economic responses to the challenges of climate change.

Module Content:

This module provides basic knowledge on topics such as the carbon cycle, the mechanisms and consequences of climate change, and the technical and policy measures for mitigating and adapting to climate change. The potential of tropical agroecosystems is assessed based on scientific studies and existing operational projects.

Teaching and Learning Methods:

-Course (18 hours)

-Tutorial (3 hours).

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1. Bayesian inference: Motivation and a simple example. 

2. The likelihood. 

3. A detour to explore priors. 

4. Markov chain Monte Carlo (MCMC) methods

5. Bayesian analyses in R using the Jags software.  

6. Compare scientific hypotheses using model selection (WAIC).

7. Heterogeneity and multilevel models (also known as mixed models). 

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1. “The way the modern West conceives of nature is the least widely shared view in the world” (Descola, 2005, p. 56). According to anthropologist Philippe Descola, the category of “Nature,” as a reality separate from the human world, is a European invention that is merely one of the possibilities available to societies for accounting for the living and non-living beings that surround them.

While Philippe Descola helps to revitalize the discussion of the relationship between society and the environment, he nevertheless draws on a long tradition in the humanities and social sciences. Numerous studies have already explored the various forms of knowledge and social organization that arise from this relationship: ethnoscience, the anthropology of technology, economic anthropology, ethnoecology, the sociology of science and technology, and so on.

This issue is by no means confined to the academic sphere. It also attracts the interest of stakeholders in conservation (biodiversity, natural resources, etc.) and industry (pharmacology). It also mobilizes so-called “indigenous” peoples, who are advocating—both locally and internationally—for access to resources and the preservation of their intangible cultural heritage.

2. Situated at the intersection of the social sciences and the life sciences, these disciplines analyze how human societies use plants, animals, and other components of the environment, as well as how their conceptions and representations of their environment(s) shape these uses. This research also explores how human societies organize themselves, perpetuate themselves, change to adapt to new contexts (globalization, global changes), and transmit knowledge about their relationships with nature.

For a long time, these disciplines focused more specifically on the interrelationships between so-called “traditional” societies and their immediate environment. Subsequently, beginning in the 1970s, researchers reevaluated the distinction between so-called “traditional” and “modern” societies in order to better address new contemporary environmental and social transformations.

Indeed, on the one hand, local communities—even the most isolated ones—are affected by events that are decided and unfold at various levels (international agreements, economic crises). Their immediate environment is also affected by global phenomena (climate change, loss of biodiversity, etc.). Conversely, their actions can also have international ecological, social, and economic repercussions, for example, when these communities organize to voice their demands in international forums.

Furthermore, the relationship that modern societies have with their environment is being reshaped in light of the reality of an increasingly “artificialized” planet threatened by serious disruptions and crises. The role of flora and fauna is being reevaluated, and their rights are the subject of controversy. Furthermore, the onset of a new geological era—the Anthropocene—is cited to challenge both the natural sciences and the humanities and social sciences to reconsider how we view the shared history of the environment and societies.

3. The very work of scientists and engineers is being viewed in a new light. In this regard, a new research project in the humanities and social sciences aims to reexamine the role of “non-humans” and calls for the development of analytical categories other than those of Nature and Culture. New scales and methods of investigation are also being considered to analyze global processes.

These recent shifts in scale prompt researchers in the humanities and social sciences to (re)examine their methodology through a reflective approach: they are no longer mere observers, but can also be active participants in these processes—even when they are not directly involved in a social movement.

4. The objective of this module is to introduce these various scientific and operational fields. It aims to provide students with points of reference and food for thought so that they can formulate scientific questions about the relationship between society and the environment, with a view to reflecting on how to address current environmental and social challenges. The instructors’ diverse geographical and disciplinary backgrounds will help illustrate this approach through a wide range of ecosystem types, sociocultural contexts, and themes. Given the time constraints, we do not intend to provide an exhaustive coverage of all topics, approaches, and methods. Any student wishing to delve deeper into this field should pursue more in-depth training.

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The goal of this course unit is to support students as they finalize their career plans and prepare for life after the master’s program.

The EU is organized around the entire program, with regular discussion sessions between the teaching staff and students.

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The M2 individual internship lasts approximately 5 to 6 months and, depending on the student’s track, must be completed in a research laboratory or a non-academic organization. It allows students to gain in-depth professional experience in the field of biodiversity, evolution, or ecology. It may be conducted at a local, national, or international organization on a topic approved by the faculty to ensure it aligns with the specific objectives of the student’s track of study.

Evaluation: The internship is evaluated during a public defense before a panel, during which the content of the thesis and the quality of the student’s responses to the panel’s questions are assessed. The student’s conduct and initiative during the internship are evaluated by the internship supervisor.

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