index - Laboratoire d'Excellence Dispositif de Recherche Interdisciplinaire sur les Interactions Hommes-Milieux Access content directly

The Observatoires Hommes-Milieux (OHM) system was designed as a tool to encourage, support and organise inter-disciplinarity. It is dedicated to the study and understanding of highly anthropised socio-ecosystems affected by sudden changes (socio-ecosystemic crises) that are increasingly taking place as part of Global Change (ecological, economic, social) or are its consequences. Through its research and the dissemination of its findings to scientific communities and society at large, it helps to promote sustainable development.
 
Since 2007, this OHM system has been designed and developed within the CNRS EDD, then INEE. It now comprises 13 OHMs, each focusing on its own specific area, 6 of which are located in metropolitan France, 2 overseas France and 5 abroad.
Since 2012, the LabEx DRIIHM (Interdisciplinary Research on Human-Milieu Interactions) has been responsible for its governance and for developing and coordinating cross-disciplinary activities.
 
 
The aim of this collection is to bring together all the scientific publications produced as part of projects developed in the OHMs and supported by LabEx DRIIHM, while at the same time making it possible to:

It lists all the publications contained in the sub-collections of the 13 OHMs that you can find via the tabs above.

 

View the collection

 

 

Instructions for depositors

What should be submitted to HAL?

  • The full text of articles published in peer-reviewed or non-peer-reviewed journals, after checking the terms of deposit granted by the publisher.

  • The full text of conference papers

  • At the very least, bibliographic references for all research products

How to submit to HAL?

  • Create your account or log in with your SciencesConf.org login

  • Check the rights granted by scientific journals

  • Tutorials

Attention

To ensure that publications are properly identified, please comply with the signature rules for scientific publications of LabEx DRIIHM :
  • Submissions for publications resulting from a DRIIHM-funded project must mention the LabEx as ANR-11-LABX-0010 in the "ANR Project" field on the "Metadata" page.

  • The repository must be "stamped" to the relevant OHM subcollection(s) either manually by the owner(s) of the subcollection(s) or by adding the keyword(s): "OHM(i) <Name of OHM>" (see "Further information").

  • The deposit must be made in agreement with the co-authors and in compliance with the publishers' policy.

  • As submitting your results to HAL constitutes a public disclosure, make sure beforehand that these research results are not subject to confidentiality obligations, or that they are not the subject of a procedure underway for the filing of a patent.

Further information

You will find below, for the LabEx and the OHM, a link to the descriptive sheet, the address of the site and the keyword to be added to the notice:
 
LabEx DRIIHM : https://www.driihm.fr/
Bassin Minier de Provence : https://www.ohm-provence.org/ -> OHM Bassin Minier de Provence
Oyapock (Guyane française) : https://ohm-oyapock.in2p3.fr/ -> OHM Oyapock
Estarreja (Portugal) : https://ohm-estarreja.in2p3.fr/ -> OHMi Estarreja
Tessékéré (Sénégal) : https://ohmi-tessekere.in2p3.fr/ -> OHMi Tessekere
Pyrénées-Haut Vicdessos : http://w3.ohmpyr.univ-tlse2.fr/ -> OHM Pyrenees
Vallée du Rhône : https://ohm-vallee-du-rhone.fr/ -> OHM Vallee du Rhone
Littoral Méditerranéen : https://www.ohm-littoral-mediterraneen.fr/-> OHM Littoral Mediterraneen
Nunavik (Canada) : https://ohmi-nunavik.in2p3.fr/ -> OHMi Nunavik
Pays de Bitche : https://ohm-pays-de-bitche.in2p3.fr/ -> OHM Pays de Bitche
Pima County (USA) : https://ohmi-pima-county.in2p3.fr/ -> OHMi Pima County
Littoral Caraïbe : https://ohm-littoral-caraibe.in2p3.fr/ -> OHM Littoral Caraibe
Patagonia-Bahia Exploradores (Chili) : https://ohm-bahia-exploradores.in2p3.fr/ -> OHMi Bahia Exploradores
Fessenheim : https://ohm-fessenheim.fr/ -> OHM Fessenheim

 

 

Latest articles

Socio-ecological research enlists inter- and transdisciplinarity to address complex environmental issues. Yet the “socio-ecological system” concept can be interpreted in many different ways. A characterization of the diverse practices in socio-ecological research could facilitate dialogue between researchers about the possible conceptual and ethical approaches. In this study, we investigated if a detailed analysis of scientific articles would reveal the nature and course of a socio-ecological research network, and the research angle of its members. The example we used was the Rhône River Long-Term Socio-Ecological Journal Pre-proof Research (LTSER) platform in France. We combined a multivariate analysis of a reading grid of publications by Rhône River LTSER researchers and a textual analysis of the scientific narratives. The publications were from a 10-year period and corresponded to those used in a recent international comparative analysis of LTSER platforms. The analysis revealed that the research was dominated by a biophysical approach, with a progressive increase in social aspects. The emergence of a transdisciplinary approach, co-constructed with operational partners, was also shown. The research conducted by the Rhône River LTSER was grounded in the context of managing a river with strong anthropic influences and interests, and the scientific approach aimed to provide knowledge for guiding decisions. Little reference was made in the publications to socio-ecological conceptual frameworks. Beyond the example of this LTSER platform, we identified indicators for describing the degree of inter- and transdisciplinarity and the different perceptions of socio-ecological systems. The narrative analysis revealed the angle of the research approach; this method could be used in future studies for a comparison of the diverse approaches of multiple research groups.

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Marinas are semi-enclosed environments characterised by reduced hydrodynamic energy, high sedimentation rates, and reduced oxygen levels. The ongoing development of activities and infrastructure construction are leading to deterioration in the quality of coastal aquatic environments, creating environmental risks. Trace metal elements (TMEs) and organotins are significant contaminants, prompting this study to evaluate the added value of spatiotemporal monitoring compared to one-time sediment assessments. Two Mediterranean harbours, Port Camargue (PC) and Port Carnon (C), differing in morphology and size, were monitored for a year with regular water sampling, focusing on TMEs and organotins. Sediment contamination, notably in the technical zone, revealed concentrations of Cu (309 and 1210 mg kg-1 for C and PC, respectively), Zn (242 and 425 mg kg-1 for C and PC, respectively), and tributyltin (TBT) (198 and 4678 µg (Sn) kg-1 for C and PC, respectively) surpassing the effect range-median (ERM), while other marina stations generally stayed below this threshold. Spatiotemporal water monitoring highlighted concentrations above environmental quality standards (EQS) at all stations of the larger marina. This exceedance was systematic for Cu and Zn in all samples, ranging respectively between 2.54 and 37.56 µg (Sn) L-1 and 0.63 and 33.48 µg (Sn) L-1. A notable temporal dynamic for TBT and Cu was also observed. Conversely, the open marina, connected to the open sea, rarely exhibited concentrations above EQS in water, despite sediment concentrations occasionally exceeding ERM values. This underscores that risk assessment in these ecosystems cannot rely solely on sediment characterisation.

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Ports are essential facilities for the functioning of our globalised economy, as well as for the territories they supply. Monitoring port activity is therefore a relevant way of assessing the economic intensity they generate, and enabling regional analyses of their relative weight, their areas of activity and their development trajectories. However, comparative analysis of port activity is hampered by the variable quality and uneven distribution of the data produced by port authorities, which is far from being homogeneous, which makes comparative approaches difficult. In this paper, using vessel positioning data obtained through the Automatic Identification System (AIS), we propose a method for the extraction, quantification and qualification of port calls. We apply this method to a dataset in the Caribbean, covering the whole of 2019. Our method was able to describe the activity of 101 ports (in the sense of port areas) in the Lesser Antilles, by identifying 171,626 calls and their duration, by 5,907 ships of various type, size, age or flag. A comparison with the statistics published by a number of reference ports authorities and by the UNCTAD (United Nations Conference on Trade and Development) shows that the median difference of computed port calls is about 11%, thus validating the proposed approach. By qualifying the type of vessel that passes through port waters, according to its characteristics, this approach based on the number of calls makes it possible to observe the capabilities and the infrastructural quality deployed in the ports in terms of vessels, and, stemming from it, to develop the hypothesis of port vulnerability, that is a perspective for our future work.

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Abstract Lynchets are ridges formed by erosion and sediment accumulation downstream of agricultural plots and offer valuable insights into past agricultural activity. These microtopographies cover vast areas and serve as indicators of historical changes in land use. As a result, their ubiquity across Europe makes them particularly interesting. In this study, we propose a geoarchaeological approach to analyze six lynchets, four in the Vosges Mountains and two on the Lorraine Plateau (France). The lynchets can be considered soil archives with no stratigraphic organization or chronological sequence from bottom to top, making it difficult to determine the age of the lynchets and identify changes in land use over time. To this end, we propose the analysis of historical and geo‐historical archives combined with the “pedosedimentary” archives of lynchets through charcoal identification and dating combined with near‐infrared spectroscopy to determine the age, vegetation, and past land use changes associated with lynchet landscapes. By combining these multiple data sources, we are better able to show the chronological development of these ancient agricultural systems and uncover valuable information on landscape history. Charcoal dating suggests a higher frequency of fires from the Middle Ages. The dating aligns with the regional dynamics of anthropogenic fires, indicating a potential use of fire for cultural purposes. We also demonstrate the difficulty of extrapolating the dating of a lynchet to the entire lynchet system. Our results highlight the difficulties of interpreting the formation and dating of lynchets and the lynchet system on the sole basis of charcoal analysis. However, we highlight the value of applying pedoanthracology to lynchets to determine the dynamics of land use change in former fields.

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The main objective of the study was to investigate the diversity of the woody stratum of the vegetation in intercommunity rangelands in the department of Koungheul based on an ecological inventory using vegetation surveys. The results indicate a rich flora of 70 species divided into 54 genera and 27 families where Ceasalpiniaceae and Rubiaceae are dominant (5 genera each). They are followed by Combretaceae and Euphorbiacea (4 genera each) and by Capparaceae, Fabaceae and Mimosaceae (3 genera for each family). But at the specific level, it is the Combretaceae which dominates with 10 species and Rubiaceae (7 species). It is more representative at the level of the rural community of Lour Esacale. The different values of vegetation parameters from one site to another indicate variability in community rangeland management practices. The woody stand, dominated by small Combretaceae, shows a relatively stable level of organization with an average equitability of about 45% for the two rural communities studied. Species such as Cordyla pinnata, Sclerocarya birrea, Adansonia digitata and Sterculia setigera contributed strongly to the basal and aerial cover of the overall stand. The regeneration of the stand is very good (about 85% on average) but it represents very few species, especially of the Combretaceae family. This shows a tendency to a progressive loss of species richness in the woody stratum.

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The main objective of the study was to investigate the diversity of the woody stratum of the vegetation in intercommunity rangelands in the department of Koungheul based on an ecological inventory using vegetation surveys. The results indicate a rich flora of 70 species divided into 54 genera and 27 families where Ceasalpiniaceae and Rubiaceae are dominant (5 genera each). They are followed by Combretaceae and Euphorbiacea (4 genera each) and by Capparaceae, Fabaceae and Mimosaceae (3 genera for each family). But at the specific level, it is the Combretaceae which dominates with 10 species and Rubiaceae (7 species). It is more representative at the level of the rural community of Lour Esacale. The different values of vegetation parameters from one site to another indicate variability in community rangeland management practices. The woody stand, dominated by small Combretaceae, shows a relatively stable level of organization with an average equitability of about 45% for the two rural communities studied. Species such as Cordyla pinnata, Sclerocarya birrea, Adansonia digitata and Sterculia setigera contributed strongly to the basal and aerial cover of the overall stand. The regeneration of the stand is very good (about 85% on average) but it represents very few species, especially of the Combretaceae family. This shows a tendency to a progressive loss of species richness in the woody stratum.

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Aux Etats-Unis, la chasse réunit près de 12 millions de licenciés, soit 4 % de la population. Le nombre de pratiquants diminue toutefois depuis le début des années 1980, dans un contexte marqué par la politisation croissante d’une activité de plus en plus contestée. Or, amenés à justifier leurs activités, comment les pratiquants se défendent-ils face à l’émergence de discours « anti-chasse » de plus en plus audibles et structurés ? Alors qu’ils voient leur hobby attaqué, comment les chasseurs parviennent-ils à défendre le maintien de leur activité ? À partir d’une enquête conduite en Arizona, l’un des États américain les plus réputés pour la valeur et la qualité de son gibier, cette contribution montre comment des promoteurs de l’activité font paradoxalement d’un loisir polémique une activité où se construit, s’organise et se diffuse une (contre-)éthique de la chasse à portée politique.

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River floodplain channels can serve as reproduction, nursery or refuge areas for fish. Although the complementary use of floodplain and main channels is known, few studies attempted to quantify this use and even fewer analysed its controlling factors. The objectives of this study are (1) to describe the spatio-temporal use of floodplain habitats and to identify their roles as complementary habitats for fish and (2) to analyse how abiotic variations and their modifications under restoration impact habitat use by fish. To meet these objectives, we analysed (Principal Components Analysis and Coinertia Analysis) multi-site data collected over 20 years in eight main channels and 23 floodplain channels of eight restored sectors of the French Rhône River. Results show that habitat use by fish is mainly related to spatial effects, with 37 % of within-sector variance in taxonomic assemblages explained by the stations. As expected, rheophilic species were more abundant in lotic stations and limnophilic species in lentic ones. In addition, we identified an euryecious guild, grouping young of the year taxa (roach, gudgeon, chub, bleak) that used all types of habitats and particularly lentic floodplain channels with short life-span. Temporal effects (with ~10 % of the variance explained by years) combine (1) the effect of restoration, that increased the diversity of fish assemblages across the floodplain, with stronger changes in floodplain channels whose connectivity regime was modified, (2) the effect of high flows on fish habitat use, that reinforces the nursery and refuge functions of floodplain channels. Our results demonstrate the importance of restoring the diversity of habitats and connectivity because floodplain habitats have complementary functions for fish. Furthermore, our results also suggest to account for temporal variations in order to better estimate the potential effects of restoration on river and their floodplains.

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The trajectory taken by the Provence Coalfield (or Bassin Minier de Provence), located between Aix-en-Provence and Marseille, is explained by its long mining history, disrupted by the closure of the mine in 2003. We approach this space from a global perspective, considering the social, economic and environmental dimensions of the socio-ecosystem. The conclusion puts forward scenarios for the evolution of the territory and the perspectives for research, underlining the growing role of the energy transition, especially in the context of the closure of the coal-fired power plant.

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A key component of the environment in coastal territories, the sea also creates special geographical features and grounds social and cultural identities. At a time of rising concern and multiple projects for its exploitation as well as its protection, public policies need to consider the social representation of the marine environment and people’s visions of its future. Relying on the concept of maritimity, defined as all the relationships binding human societies to the sea and the resulting landscape, economy and culture, we assess the maritime character of a coastal region in southern France by analysing the local sea–related associations its population are engaged in. This is made possible through the supervised extraction of the relevant data from the national directory of associations, the official database of non-profit associations in France, which are then given appropriate statistical and cartographic treatments. Results provide an indication of the depth of the region’s maritime character, as well as the areas of activity and places in which maritimity is the most developed. These are consistent with the social and economic profile of the region, highly engaged in tourism and a residential economy. Further work is recommended, with a view to exploring the region’s maritimity more closely by comparing it with other regions and applying finer analysis to the stated objectives of the sea-related associations

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