M2 - Chrono-Environments and Paleoecology (CEPAGE)

The objective of this EU is to enable the implementation of projects defined within the framework of the M1S2 EU project.

Summary of EU content:

- Independent work supervised by student groups: readjustment of project objectives and methodology if necessary, data acquisition, ecological and/or evolutionary analyses and interpretations according to the provisional schedule defined in M1S2, presentation of results at a joint symposium for the different courses.

Assessment methods:

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

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This EU focuses on analyzing the impact of humans on the climate and the environment.

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Present different methodological approaches in an applied context, from data acquisition to interpretation. Each approach is covered in half a day (3 hours), addressing data acquisition methods (1.5 hours of practical work) and interpretation of results (1.5 hours of tutorials).

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"The aim of this EU is to present and explain the concepts, issues, operational approach 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 data sets covering ecology, paleoecology, paleobiogeography, archaeobiology, archaeology, and paleoethnobiology. Particular attention will be paid to:

- the functional role of ecological disturbances such as fires in vegetation cover transformations;

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

- the exploitation, cultivation/breeding, and domestication of plants and animals based on the study of modern and bioarchaeological data. "

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The objective of this EU is to support students in developing their career plans and searching for internships, while beginning to prepare for their integration into professional life by providing a comprehensive and personalized overview of possible career paths.

In practical terms, meetings with various stakeholders provide an opportunity to present the doctoral thesis (presentation of the GAIA doctoral school, presentations by doctoral students) and the professional network targeted by the various courses (research professions and non-academic sector). Activities specific to each course then enable students to better target the scientific fields most relevant to their professional projects. Finally, tutorial sessions are designed to prepare students for writing scientific articles in English.

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In this course, we will address the main theoretical concepts of evolutionary processes through the fossil record. We will discuss how to reconcile microevolutionary and macroevolutionary mechanisms. The concepts covered will be: species and intraspecific variability, speciation and the pace of evolution, adaptive radiation (ecological speciation) in the fossil record, targeted extinctions (migrant-native competition) or mass extinctions (major biological crises), evolutionary modalities (anagenesis and saltationism) observed in the fossil record, and a comprehensive review of microevolutionary mechanisms.

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The objective of this resolutely transdisciplinary course is to provide students with the skills needed for the effective management and relevant use of data of various origins and types, particularly those with a spatial component. The course consists of three complementary and successive sections. 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 axis presents the diversity of spatial analysis tools that enable the quantitative exploitation of spatial data, whether metrics or statistical tests.

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The educational objective of this teaching unit is to reposition the major soil types on a global scale, explain their formation, and identify the mineral phases or main abiotic factors likely to regulate biological activity in soils. Based on this analysis, the various soil organisms (microorganisms, micro-, meso- and macrofauna) will be presented, along with their relationships, in order to reposition the cycle of organic matter and mineral elements in the soil at different temporal and spatial scales. The concepts of recycling, biogeochemical cycles and community assembly rules will also be addressed. This course unit is organized around lectures and conferences, as well as tutorials 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). Developmental and functional approaches (mainly odontology) will be illustrated by various methodologies developed on the Montpellier campus (in particular X-ray microtomography). A critical review of reference articles in the field will be followed by an oral presentation and a question-and-answer session."

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Land use changes are responsible for approximately 10% of anthropogenic carbon dioxide emissions. Tropical forest ecosystems can contribute to both pillars of addressing global warming, namely mitigation and adaptation:

-Tropical forests and plantations are important 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 that 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 intervention.

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

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 political measures for mitigating and adapting to this change. The potential of tropical agroecosystems is assessed on the basis of scientific studies and existing operational projects.

Teaching and learning methods:

-Classes (18 hours)

-TD (3 hours).

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1. Bayesian inference: Motivation and simple example. 

2. The likelihood. 

3. A detour to explore priors. 

4. Markov chain Monte Carlo methods (MCMC)

5. Bayesian analyses in R with the Jags software.  

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

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

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1. "The way in which the modern West represents nature is the least well-shared thing 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 an invention of Europeans that is only one of the possibilities available to societies to account for the living and non-living beings that surround them.

While Philippe Descola contributes to renewing questions about society-environment relations, he nevertheless draws on a long tradition in the humanities and social sciences. Numerous works already explore the various forms of knowledge and social organization to which these relations give rise: ethnoscience, anthropology of technology, economic anthropology, ethnoecology, sociology of science and technology, etc.

This issue is far from being confined to the academic sphere. It also attracts the interest of conservationists (biodiversity, natural resources, etc.) and industry (pharmacology). It also mobilizes so-called "indigenous" populations who are demanding, both locally and internationally, access to resources and the preservation of intangible heritage.

2. Located at the intersection of social sciences and life sciences, these disciplines analyze how human societies use plants, animals, and other components of the environment, but also how their conceptions and representations of their environment(s) guide 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 reconsidered the distinction between so-called "traditional" and "modern" societies in order to better address new contemporary environmental and social transformations.

On the one hand, even the most isolated local communities are affected by events that are decided and take place at different levels (international conventions, economic crises). Their immediate environment is also affected by global phenomena (climate change, erosion of biodiversity, etc.). In turn, their actions can also have international ecological, social, and economic repercussions, for example when these societies organize to bring their demands to international arenas.

On the other hand, modern societies' relationship with their environment is being reconfigured in light of the fact that our planet is becoming increasingly "artificialized" and threatened by serious disruptions and crises. The place of fauna and flora is being reconsidered and is the subject of controversy regarding their rights. Furthermore, the dawn of a new geological era, the Anthropocene, is being invoked to challenge both the natural sciences and the humanities and social sciences on the need to take a different approach to the shared history of the environment and societies.

3. The work of scientists and engineers is being viewed in a new light. In this regard, a new scientific project in the humanities and social sciences aims to reconsider 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 for analyzing global processes.

These recent changes in scale invite researchers in the humanities and social sciences to (re)consider their approach through a reflexive lens: they are no longer mere observers, but can also be active participants in processes, even when they are not directly involved in a social movement.

4. The objective of this module is to introduce these different scientific and operational fields. It aims to provide students with reference points and food for thought, enabling them to develop scientific questions on the relationship between society and the environment, with a view to reflecting on how to address current environmental and social issues. The varied geographical and disciplinary experiences of the speakers will illustrate the approach through a wide range of ecosystem types, sociocultural contexts, and themes. In the time available, we do not claim to cover all themes, approaches, and methods exhaustively. Any student wishing to study this field in greater depth will need to undertake more in-depth training.

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The objective of this EU is to support students in finalizing their professional projects and preparing for life after their master's degree.

The EU is organized on a course-wide basis, with regular discussion sessions between the teaching team and students.

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The individual M2 internship lasts approximately 5 to 6 months and must be carried out, depending on the course concerned, 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 can be carried out in a local, national, or international organization, on a topic approved by the teaching team so as to fit in with the specific objectives of the program followed by the student.

Assessment: The internship is assessed during a public defense before a jury, during which the content of the thesis and the quality of the responses to the jury's questions are evaluated. The student's behavior and enthusiasm during the internship are assessed by the internship supervisor.

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