International journals
35. Cabon V., Quénol H., Deletre B., Copin L., Dubreuil V. & Bergerot B. 2024. Body size responses to urban temperature variations are determined by life history traits in 11 common spider species. Functional Ecology, In Press.
34. Mauchamp A., Bonis A., Crabot J., Bergerot B., Gore O. & Paillisson JM. 2024. Interplay between water regime components and wet grassland plant communities. Wetlands, 44:50.
33. Cabon V., Quénol H., Dubreuil V. Ridel A. & Bergerot B. 2024. Urban heat island and reduced habitat complexity explain spider community composition by excluding large and heat-sensitive species. Land, 13:83.
32. Gerber R., Piscart C., Roussel JM. & Bergerot B. 2023. Morphology-based classification of the flying capacities of aquatic insects: a first attempt. Current Zoology, In Press.
31. Cabon V., Pincebourde S., Colinet H., Dubreuil V., Georges R., Launoy M., Pétillon J., Quénol H. & Bergerot B. 2023. Preferred temperature in the warmth of cities: body size, sex and development stage matter more than urban climate in a ground-dwelling spider. Journal of Thermal Biology, 117: 103706.
30. Gerber R., Piscart C., Roussel JM., Georges R., Houet T., Royer J. & Bergerot B. 2023. Landscape models can predict the distribution of aquatic insects across agricultural areas. Landscape Ecology, 38: 2917-2929.
29. Rivas J., Fuentes A., Maria A., Bergerot B., Siaussat D. & Renault D. 2023. Effects of plasticizers on the activity of glycolytic enzymes in the moth Spodoptera littoralis. Journal of Insect Physiology, 149:104533.
28. Crabot J., Bergerot B., Bonis A., Gore O., Mauchamp A. & Paillisson J.M. 2023. Do highly anthropized hydrological conditions in marshes influence fish communities according to their life-history strategies? River Research and Applications, 39: 1551-1577.
27. Gerber R., Cabon L., Piscart C., Roussel JM. & Bergerot B. 2022. Body stores of emergent aquatic insects are associated with body size, sex, swarming behaviour, and dispersal strategies. Freshwater Biology, 67: 2161-2175.
26. Gerber R., Bergerot B., Roussel JM. & Piscart C. 2022. The role of hydrographic mapping in the study of emerging aquatic insects at the landscape scale. Water, 14: 3019.
25. Bergerot B. 2022. The citizen science paradox. Land, 8:1151.
24. Crabot J., Mauchamp A., Rossignol N., Bergerot B., Bonis A., Gore O. & Paillisson JM. 2022. How hydrology and landscape shape Odonata assemblages in marshlands crossed by ditches. Freshwater Biology, 67:1228-1241.
23. Omoniyi G.E., Piscart C., Pellan L. & Bergerot B. 2022. Responses of macroinvertebrate communities to hydromorphological restoration of headwater streams in Brittany. Water, 14:553.
22. Butet A., Rantier Y. & Bergerot B. 2022. Land use changes and raptor population trends: a twelve-year monitoring of two common species in agricultural landscapes of Western France. Global Ecology and Conservation, 34:e02027
21. Bergerot B., Lemasle PG., Boussard H., Betbeder J., Jambon O., Georges R., Croci S., Burel F. & Baudry J. 2022. Threshold and weighted-distance methods: A combined multiscale approach improves explanatory power of forest carabid beetle abundance in agricultural landscape. Landscape Ecology, 37: 159-174.
20. Meyer-Grandbastien A., Burel F., Hellier E. & Bergerot B. 2021. Characterization of visitors' perception of landscape heterogeneity in urban green spaces. Urban Science, 5:86.
19. Omoniyi G.E., Bergerot B., Pellan L., Delmotte M., Crave A., Heyman J. & Piscart C. 2021. In-stream variability of litter breakdown and consequences on environmental monitoring. Water, 13:2246.
18. Mauchamp A., Gore O., Paillisson JM., Bergerot B. & Bonis A. 2021. Delineating the influence of water conditions and landscape on plant communities in eutrophic ditch networks. Wetlands Ecology and Management, 29:417-432.
17. Bergerot B., Hellier E. & Burel F. 2020. Does the management of woody edges in urban parks match aesthetic and ecological user perception? Journal of Urban Ecology, 6:1-11 PDF
16. Meyer A., Burel F., Hellier E. & Bergerot B. 2020. A step towards understanding the relationship between species diversity and psychological restoration of visitors in urban green spaces using landscape heterogeneity. Landscape and Urban Planning, 195:103728.
15. Bergerot B., Bret V. & Cattanéo F. 2019. Similarity in seasonal flow regimes, not regional environmental classifications explain synchrony in brown trout population dynamics in France. Freshwater Biology, 64:1226-1238
14. Marion L. & Bergerot B. 2018. Northern range shift may be due to increased competition induced by protection of species rather than to climate change alone. Ecology and Evolution, 8:8364-8379.
13. Bergerot B. & Cattanéo F. 2017. Hydrological drivers of brown population dynamics in France. Ecohydrology, 10:e1765.
12. Fontaine B., Bergerot B., Leviol I. & Julliard R. 2016. Impact of urbanization and gardening practices on common butterfly communities in France. Ecology and Evolution, 6:8174-8180.
11. Bret V., Bergerot B., Capra H., Gouraud V. & Lamouroux N. 2016. Influence of discharge, hydraulics, water temperature and dispersal on density synchrony in brown trout populations (Salmo trutta). Canadian Journal of Fisheries and Aquatic Sciences, 73:319-329.
10. Bergerot B., Hugueny B. & Belliard J. 2015. Relating life-history traits, environmental constraints and local extinctions in river fish. Freshwater Biology, 60: 1279-1291.
9. Bergerot B., Hugueny B. & Belliard J. 2013. When local extinction and colonization of river fishes can be predicted by regional occupancy: the role of spatial scales. PlosONE, 8(12): e84138.
8. Bergerot B., Tournant P., Moussus J-P., Stevens V. M., Julliard R., Baguette M. & Foltête J-C. 2013. Coupling inter-patch movement and landscape graph to assess functional connectivity. Population Ecology. 55: 193-203.
7. Bergerot B., Merckx T., van Dyck H. & Baguette M. 2012. Habitat fragmentation impacts mobility in a common and widespread woodland butterfly: do sexes respond differently? BMC Ecology, 12(5). doi:10.1186/1472-6785-12-5.
6. Bergerot B., Fontaine B., Julliard R. & Baguette M. 2011. Landscape variables impact the structure and composition of butterfly assemblages along an urbanization gradient. Landscape Ecology, 26:83-94.
5. Bergerot B., Julliard R. & Baguette M. 2010. Metacommunity dynamics: Decline of functional relationship along a habitat fragmentation gradient. PlosONE, 5(6): e11294. doi:10.1371/journal.pone.0011294.<
4. Bergerot B., Fontaine B., Renard M., Cadi A. & Julliard R. 2010. Preferences for exotic flowers do not promote urban life in butterflies. Landscape and Urban Planning. 96: 98-107.
3. Piscart C., Bergerot B., Laffaille P. & Marmonnier P. 2010. Are amphipod invaders a threat to regional biodiversity? Biological Invasions, 12: 853-863.
2. Bergerot B., Lasne E., Vigneron T. & Laffaille P. 2008. Prioritization of fish communities with a view to conservation and restoration at a large European basin scale, The Loire (France). Biodiversity and Conservation. 17:2247-2262.
1. Lasne E., Bergerot B., Lek S. & Laffaille P. 2007. Fish zonation and indicator species for the evaluation of rivers’ ecological status: example from The Loire basin (France). River Research and Applications, 23:1-14.
Other publications
- Bergerot B., 2010. Rhopalocera community functionning in urban and periurban areas. Thesis. 229p. PDF
- Bergerot B., 2009. Toward biodiversity prioritization. Biologos, http://www.biologos.univ-rennes1.fr/. PDF
Main projects
- Ecosystem services provided by streams to adjacent agricultural terrestrial ecosystems, STRANGE - ANR project, November 2023 - June 2027.
Streams are traditionally viewed as receptacles rather than sources of energy with regard to nutrient and energy cycles. However, numerous studies have shown that lakes and rivers are
important source of energy for the terrestrial environment, mainly through the emergence of winged aquatic insects, by providing nutritional subsidies to terrestrial consumers. The
objective of this project is to evaluate the ecosystem services provided by aquatic ecosystems in adjacent agricultural environments. More precisely, (1) we will focus on three
ecosystem services provided and mediated by emerging aquatic insects that are fundamental to agronomy (pollination, foodweb support, and soil fertilization). (2) In parallel to the first
objective, we will study the history of the governance of French riparian areas to examine current management practices, their associated representations, and their recent
improvements in the governance in order to increase the adoption of ecologically responsible practices by stakeholders. (3) We will map physical and biological characteristics of
streams and catchments with high-resolution data and remote sensing techniques to estimate the respective contribution of various drivers (land uses, landscape features, etc.) and
spatially exhaustively evaluate the related ecosystems services at multiple scales. To achieve these objectives, we will rely on five sites located along a gradient of agricultural
intensification and in different agricultural context. This selection follows a call for collaboration within three Zones Ateliers (ZA Armorique, ZA Loire, ZA Brest-Iroise) from the
French Long Term Socio-Ecological Research network (LTSER RZA). The two PIs will be helped is their tasks by 15 other scientists from 11 research units with complementary skills
in ecology (plant and animal ecology, foodweb, pollination), geography (remote sensing, spatial modeling, land use planning) and social scientists (ecological economy, management,
planning).
Project funded by the Agence Nationale de la Recherche (ANR).
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- Effects of microclimatic variability on urban wildlife in the context of climate change, MICROCLIM - Brittany regional project, October 2021 - September 2024.
Many studies show that variables such as land cover or species interactions are important in explaining species distribution patterns at large spatiotemporal resolutions. Climatic variables are also often found to be important in predicting species range boundaries at large scales. While the analysis of flora distribution patterns in relation to urban heat islands has been the subject of many research, few studies have linked urban heat island microclimates to fauna. However, microclimatic contrasts on fine spatial scales (a few hundred meters) and temporal scales (annual) are strong in urban environments and are therefore likely to have a strong impact on wildlife. To date, few urban sites have been sufficiently instrumented to highlight the impacts of these microclimates on fauna. The city of Rennes offers these particular study conditions because the city presents a dense network of microclimatic sensors since 2014 to obtain fine-scale microclimatic information. The scientific questions addressed by this thesis will allow a better understanding of the impact of microclimatic effects on animal biodiversity patterns in cities. The objectives of this thesis at the interface between climatology and ecology are to provide innovative knowledge (1) by relating spatial temperature variability at a fine scale (a few tens of meters) to the distribution patterns of animal species in the city, (2) to analyze the consequences of this spatial variability of the local climate on the dispersal processes of animal species, (3) to make projections of species distributions in relation to the urban heat island and future climate change scenarios.
Co-financed by the Brittany region and the University of Rennes 1.
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- Project LIFEPLAN - A Plan¬et¬ary In¬vent¬ory of Life, ERC European Project. 2019 - 2025.
At present, an estimated 80% of all species on Earth still await discovery. At the same time, we are losing biodiversity at an alarming rate. There is an urgent need to make sense of patterns and processes in biodiversity - while dealing with the unknown in an efficient way. Through LIFEPLAN, we aim to establish the current state of biodiversity across the globe, and to use our insights for generating accurate predictions of its future state under future scenarios. In LIFEPLAN, we thus characterize biological diversity through a worldwide sampling program, and develop the bioinformatic and statistical approaches needed to make the most out of these data. Together, we will generate the most ambitious, globally distributed and systematically collected data set to date on a broad range of taxonomical groups. Importantly, we will employ modern sampling methods that do not require taxonomical expertise from those collecting the data, and that will result in data that are directly comparable among different locations. We are now looking for collaborators, and hope that you will join our endeavor.
LIFEPLAN awarded ERC Synergy funding 2019-2025.
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- Assessment, follow-up and evaluation of the actions of restoration of Brittany watercourses, BERCEAU Life project. 2017 - 2021.
To improve the functioning of rivers and to contribute to obtaining a good water quality in sufficient quantity, restoration actions are carried out in Brittany. They contribute to the maintenance of the biological life of rivers. The BERCEAU project was developed with the support of the Scientific Resource Center on Water in Brittany (CRESEB) on the basis of needs raised by river technicians. The project brings together researchers, operators (project owners), technical and institutional partners in a co-construction approach. It aims to provide decision-makers and local actors with technical tools to evaluate the effectiveness of the actions they carry out in their territories. About ten restoration sites will be monitored before and after work. The scientists will involve the operators in the implementation of the measurements and the assistance in the interpretation. In parallel, recommendations on the storage of data collected during restoration operations will be produced.
Brittany region funding 2017-2021.
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- Connectivity patterns and processes along a gradient of European landscapes with woody vegetation and spatial heterogeneity (WOODNET), Biodiversa European Project. January 2017 - December 2019.
WOODNET aims at providing innovative spatially-explicit tools for connectivity analysis along a range of landscapes from forest and shrubland to agricultural landscapes where woody vegetation elements play a key role for conservation or service delivery. Novel satellite images at different resolutions, permitting to describe the internal structure of landscape elements, will produce improved resistance maps, considering landscape characteristics at different scales, and supported by species empirical data and models of habitat suitability, resource selection and landscape genetics. New connectivity models based on a diversity of possible pathways for species movements through landscapes will be produced. WOODNET also considers the effect of landscape legacies (past connectivity) on current species distribution. The biological models are diverse, from bears and lynx for large landscapes dominated by forests or shrublands to beetles, plants, birds and damselflies for landscapes characterized by hedgerows. We will provide new tools for enhancing connectivity analysis of a diversity of functional networks, together with an evaluation of the synergies and antagonisms among them. We will, for arable crops, study how landscape connectivity drives the distribution of pest and beneficial arthropods and the associated (dis)services. The project also discusses science-policy interface and legal connectivity issues, focusing on how law may integrate both connectivity science, stakeholders knowledge and scientific uncertainty to inform green infrastructure (GI) policy and provide for adaptive management. This is an important point for discussion with stakeholders. We will decipher the different sources of scientific uncertainties, and their consequences on the design of the legal framework of GBIs. The involvement of stakeholders at different scales will permit to further discuss the links between research design and its outputs on GBIs implementation and management.
This research project is funded by the European project Horizon 2020 ERA-NET COFUND scheme.
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- Ecological and sociological perception of greenways in urban areas, University of Rennes 1. October 2016 - September 2019.
Facing urbanization, urban green spaces are important landscape elements for sociological and ecological concerns. Although in the past stakeholders considered mainly the aesthetics of these elements, users are now demanding for diversified urban green spaces (e.g. parks with various floral compositions, trees, open spaces with more natural areas, greenways…). At the same time, in France, the ‘trame verte et bleue’ policy (Grenelle 2010) leads to the development of urban greenways to favor and maintain biodiversity. However few scientific studies focused their attention on the combined ecological and sociological value of new urban greenways in order to assess stakeholder’s actions.
We aim to analyze if sociological perception of greenways by users in Rennes city (France) is in accordance with efforts made by stakeholders in favor of biodiversity in the framework of ‘trame verte et bleue’ policy (Grenelle 2010). Two main hypotheses will be tested: (1) the ecological requirement defined by researchers to increase biodiversity in greenways may diverge from sociological needs of users, (2) both ecological and sociological concerns can be improved through management practices of urban parks at specific spatiotemporal scales.
This research project is fully funded by the French Research Ministry (MENRT grant).
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- Role of hydrology for freshwater fish populations and communities, postdoctoral research fellow in collaboration with the Haute Ecole du Paysage et d'Architecture (Hepia), Geneva, Switzerland. February 2012 - August 2015.
Flow regime is a key factor in lotic systems, as it controls the spatio-temporal variability of habitats at different scales. By defining a template for aquatic habitats, hydrology constrains a body of both physical and biological processes that are essential for the good ecological functioning of the system. Increasing demand and use of freshwater resources, for e.g., agriculture, industry, power generation, or domestic needs, result in a quantitative alteration of river flows, which may takes various forms (from a very local flow decrease to a complete change in the flow regime over whole reaches). Ongoing trends of climatic changes, be they gradual and running over long-term, also suggest a possibly severe distortion of future flow regimes. Yet, significant links between the degree of flow alteration and the ecological impact on the system have been demonstrated. Functional relationships underlying these links between flow and ecology are little understood, and overall poorly quantified. It is therefore extremely difficult to predict responses of biological communities to various kinds of flow regime alteration, especially as they are often accompanied by other environmental degradations (temperature, physico-chemistry, sediment transport...). Looking for direct hydrology-biology relationships appears to be a key stage for the further development of management-oriented decision tools.
Identifying the true effect of flow changes is an awkward task as hydrology-biology relationships may spuriously emerge simply due to the spatial and/or temporal correlation between flow characteristics and other key environmental drivers of communities (e.g. distance from the source, elevation, stream width, basin area...). A means to circumvent this problem is to account for the effects of the major environmental drivers, by using both multiple-site and -year data series. The fish database held by the ONEMA (the French national office of water and aquatic systems) gathers spatial-temporal information for fish communities collected at a large number of sites all across France, with time-series > 10 years for more than one hundred sites. This exceptional dataset is particularly interesting for analysing fish-flow relationships.
This research project is fully funded by the French National Agency for Water and Aquatic Environments (ONEMA).
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- Evaluation of local extinction and colonization rates for French river fish species – Identification of controlling factors, postdoctoral research fellow in collaboration with the Institut de national de Recherche en Science et Technologies pour l'Environnement et l'Agriculture (IRSTEA) and the Institut de Recherche pour le Développement (IRD), Antony, France. October 2010 - February 2012.
In the context of future evolutions of environmental conditions and human activities, freshwater fish species conservation and management imply a better understanding of extinction and colonization processes and of abiotic or biotic factors controlling these processes. The aim of my researches is (1) to quantify extinction and colonization rates for French river fish species at the local scale (i.e. sampling site scale) and (2) to study how these rates may vary according ecological and biological traits of species, possible species interactions (competition predation) and environmental features of study sites, recent climatic change and human pressures.
This research project is a part of the national project FISHLOSS (Background, recent and anticipated patterns of freshwater fish extinctions: devising quantitative approaches despite scarcity of ecological information) funded by the French National Research Agency (ANR).
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- Development and coordination of the French Butterfly Monitoring Scheme for stakeholders (PROPAGE project) at the National Museum of Natural History (Paris, France) since 2007.
http://vigienature.mnhn.fr/propage
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- Identification of important sites for conservation of freshwater biodiversity along the Loire in France (extending the species-based approach) in collaboration with the University of Rennes 1, France. Directed by Pr. Pascal Laffaille (UMR 5245- Toulouse, France). January-June 2007.
Having been overexploited, degraded or destroyed for a considerable period, natural ecosystems are now considered as a precious inheritance which must be preserved and restored because of the multiple functions that they can fulfil and profits that they could generate. Indeed, the decrease in biodiversity goes hand-in-hand with major ecological or environmental disorders which imply important economic and social consequences for our society. From this report was born a key notion in the evolution of mentalities which we have named the "nature value". In effect, every trophic network constitutes a complete chain which can be likened to a function. Every level of these trophic networks which, ends in an economic activity, has a direct and indirect use value according to the products and the services which it can generate. The nature valuation is calculated as the profit obtained after a cost/gains analysis. However, constant economic pressure does not allow the conservation of all threatened zones. The localization of the places of interest has become an urgent challenge to be resolved for territory management, in order to integrate biodiversity conservation into socioeconomic concerns. In spite of the profusion of tools which enable an estimation of the biological diversity of an environment, the administrators lack protocols in order to prioritize areas for the initiation of biodiversity conservation or restoration campaigns.
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- Study of fish communities at the Loire basin scale (France) and implications for conservation and restoration in collaboration with the University of Rennes 1, France. Directed by Pr. Pascal Laffaille (UMR 5245- Toulouse, France). April-August 2006.
Books
- Bergerot B., 2011. Sur la piste des papillons (On the track of butterflies). Editions Dunod. 192p. PDF
Book contributions
- Poulet N., Séon-Massin N. & Basilico L., 2013. Régime de débit et peuplements piscicoles. 63-65pp. In Poulet N., Séon-Massin N. & Basilico L. (Eds), 2013. Biodiversité aquatique: du diagnostic à la restauration. Les rencontres de l'ONEMA. 90p. PDF
- Gourmand A.L., 2012. Fonctionnement des communautés de rhopalocères. 125-159pp (Based on Bergerot B. 2010, thesis PDF) . In Renault O. (Eds), 2012. La faune de Seine et Marne. Mieux connaître pour mieux préserver. Editions Librairie des Musées. 359p.