Biodiversité, flux et changements globaux

Nathalie FROMIN

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I am a soil ecologist studying plant - microorganisms - soil interactions in terrestrial ecosystems in a context of global change. My research aims at understanding the response of soil microbial communities and the processes they control to plant diversity in a changing world.

See my publications on ResearchGate




7 rue du Four Solaire

66120 Odeillo

tél : 33 (0)4 68 30 77 46


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Brief biography

  • 1995: Forest Engineer (Ecole Nationale du Génie Rural des Eaux et des Forêts, Nancy, France)
  • 1995: Diplôme d'Etudes Approfondies in microbial ecology (Univ. Claude Bernard, Lyon, France)
  • 1998: PhD in microbial ecology (Université de Provence, Marseille, France)
  • 1999-2004: research associate and master assistant, University of Neuchâtel (Switzerland)
  • 2004-2005: research associate, Centre d'Ecologie Fonctionnelle et Evolutive (Montpellier, France)



Soil microbial ecology, biodiversity, plant-microorganism interactions, above-belowground interactions, carbon and nutrient cycling, global change, functional diversity, soil organic matter


Recent collective works:

"Les sols à l'heure du changement climatique" (Société Française d'Ecologie et Evolution, 2019)


Collective expertise on the impact of artificialization on soil diversity (in French) : Expertise collective sur les effets de l'artificialisation des sols sur la biodiversité des sols


Report State of knowledge on Soil Biodiversity (FAO of UN, 2020)


Recent and ongoing projects :

o TALVEG2: Une approche innovante pour l'aménagement et le monitoring des écosystèmes (2015-2018) Partners: société Valorhiz, INRA (coord. Alexia Stokes), CNRS (coord. Nathalie Fromin), financing FEDER - Région Occitanie. See

o MULTIVERS: Global change, plant-soil diversity a,d ecosystem multifunctionlity: the role of plant and soil organism biodiversity in soil functions (2016-2017) Grant CNRS-INSU EC2CO, coordination Grégoire Freschet (UMR CEFE).

o SoilForEurope: Predicting European forest soil biodiversity and its functioning under ongoing climate change (2017-2019). Financing ERANET BiodivERsA, coordination Stephan Hättenschwiler. see

o DIV-TROP: What biological mechanisms link biodiversity to tropical forest functioning? A tree experiment in Brazil (2018-2019) Financing LabEx Centre Médirerranéen Environnement et Biodiversité, coordination Joannes Guillemot (CIRAD - UMR Eco&Sols).

o ASSET: Assessing the Synergies and Side Effects of enhanced weathering and biochar as negative emission Technologies (2021-2022). Financing MUSE Montpellier Université d’Excellence, Coordination Alex MILCU (Ecotron Montpellier).

o BELOW : Soil Biodiversity and Ecosystem multifunctionality in Occitanie under Water constraints. Défi-clé Occitanie BIODIVOC. Coordination Grégoire Freschet (SETE Moulis) & Stephan Hättenschwiler (UMR CEFE).

o SOLALECOLE: La transition agroécologique dans les écoles : quelles perceptions, potentiels et engagements nécessaires pour un meilleur bien-être des humains et des sols ? (2021-2022) Appel à projet CO3: Co-construction des Connaissances. Coordination : Nathalie Fromin (CEFE), Pierre Ganault (association CoSciences),


Recent publications

Huys R., Poirier V., Bourget M.Y., Roumet C., Hättenschwiler S., Fromin N., Munson A.D., Freschet G. (2022) Plant litter chemistry controls coarse-textured soil carbon dynamics. Journal of Ecology

Shihan A., Hättenschwiler S., Fromin N. (2022) Root traits rather than functional diversity of soil microorganisms respond to drought and plant species composition in Mediterranean shrubland species. Frontiers in Forest and Global Change 5: 921191

Zhun M., Roumet C., Rossi L.M.W., Merino-Martín L., Rowe N., Nespoulos J., Taugourdeau O., Boukcim H., Fourtier S., Del Rey-Granado M., Ramel M., Ji K., Zuo J., Fromin N., Stokes A., Fort F. (2023) Inter- and intraspecific variations in root mechanical traits for 12 herbaceous plants and their link with the root economics space. Oïkos 1: e09032

Dupin B., Durand B., Cambecèdes J., Fromin N. (2022) Plants playing at home: Advantage of native plant seeds for ski slope revegetation in the French Pyrénées. Ecological Engineering 174: 106463.

Gillespie L., Hättenschwiler S., Milcu A., Wambsganss J., Shihan A., Fromin N. Tree species mixing affects soil microbial functioning indirectly via root and litter traits and soil parameters in European forests. Functional Ecology 35: 2190-2204 doi/10.1111/1365-2435.13877

Gillespie L.M., Fromin N., Milcu A., Buatois B., Pontoizeau C., Hättenschwiler S. (2020) Higher tree diversity increases soil microbial resistance to drought. Communications Biology 3:377.

Fromin N., Shihan A., Santonja M., Baldy V., Hättenschwiler S. (in press) Soil microbial activity in a Mediterranean garrigue responds more to changing shrub community than to reduced rainfall. Plant and Soil 449: 405-421. doi:10.1007/s11104-020-04501-8

Coq S., Nahmani J., Kazakou E., Fromin N., David J.-L. (in press) Do litter-feeding macroarthropods disrupt cascading effects of land use on microbial decomposition activity? Basic and Applied Ecology 46: 24-34. doi: 10.1016/j.baae.2020.03.004

Rossi L.M.W., Zhung M., Merino-Martin L., Roumet C., Fort F., Taugourdeau O., Boukcim H., Fourtier S., Del Rey Granado M., Chevallier T., Cardinael R., Fromin N., Stokes A. (in press) Pathway to persistence: plant root traits alter carbon accumulation in different soil carbon pools through microbial mediation. Plant and Soil 452:457-478.doi:10.1007/s11104-020-04469-5

Santonja M., Milcu A., Fromin N., Rancon A., Shihan A., Fernandez C., Baldy V., Hättenschwiler S. (2019) Temporal shifts in plant diversity effects on carbon and nitrogen dynamics during litter decomposition in a Mediterranean shrubland exposed to reduced precipitation. Ecosystems 22:939-954. doi:10.1007/s10021-018-0315-4 

Fanin N., Fromin N., Baranta S., Hättenschwiler S. (2017) Stoichiometric plasticity of microbial communities is similar between litter and soil in a tropical rainforest. Scientific Reports 7: 12498. doi:10.1038/s41598-017-12609-8

Santonja M.& Rancon A., Fromin N., Baldy V., Hättenschwiler S., Fernandez C., Montes N., Mirleau P. (2017) Plant litter diversity increases microbial abundance, fungal diversity, and carbon and nitrogen cycling in a Mediterranean shrubland. Soil Biology and Biochemistry 111: 124-134.

Gallet R., Violle C., Fromin N., Zahab R., Enquist B., Lenormand T. (2017) The evolution of bacterial cell size: the internal diffusion constraint. The ISME Journal 11: 1559-1568. doi:10.1038/ismej.2017.35

Shihan A., Hättenschwiler S., Milcu A., Joly F.-X., Santonja M., Fromin N. (2017) Changes in soil microbial substrate utilization in response to altered litter diversity and precipitation in a Mediterranean shrubland. Biology & Fertility of Soils 53: 171-185. doi:10.1007/s00374-016-1166-9

Joly F-X, Fromin N., Kiikilä O., Scherer-Lorenzen M., Hättenschwiler S. (2016) Diversity of leaf litter leachates from temperate forest trees and its consequences for soil microbial activity. Biogeochemsitry 129: 373-388 DOI: 10.1007/s10533-016-0239-z

Roy J., Picon-Cochard C., Augusti A., Benot M.-L., Thiery L., Darsonville O., Landais D., Piel C., Defossez M., Devidal S., Escape C., Ravel O., Fromin N., Volaire F., Milcu A., Bahn M., Soussana J.-F. (2016) Elevated CO2 maintains grassland net carbon uptake under a future heat and drought extreme. Proceedings of the National Academy of Sciences of the United States of America 113(22): 6224-6229. doi:10.1073/pnas.1524527113

Fanin N., Fromin N., Bertrand I. (2016) Functional breadth and home-field advantage generate functional differences among soil microbial decomposers. Ecology 97(4): 1023-1037

Fanin N., Hättenschwiler S., Chavez Soria P., Fromin N (2016) (A)synchronous availabilities of N and P regulate the activity and structure of the microbial decomposer community. Frontiers in Microbiology 6: art. 1507 doi: 10.3389/fmicb.2015.01507

Coulis M., Fromin N., David J.-F., Gavinet J., Clet A., Roy J., Devidal S., Hättenschwiler S. (2015) Functional dissimilarity across trophic levels as a driver of soil processes in a Mediterranean decomposer system exposed to two moisture levels. Oïkos 124: 1304-1316. doi: 10.1111/oik.01917

Joly F-X, Coulis M., Gérard A., Fromin N., Hättenschwiler S. (2015) Litter-type specific microbial responses to the transformation of leaf litter into millipede fecal pellets. Soil Biology & Biochemistry 86: 17-23

Fanin N., Hättenschwiler S., Schimann H., Fromin N. (2015) Interactive effects of C, N, and P fertilization on soil microbial community structure and function in an Amazonian rainforest. Functional Ecology 29: 140-150

Barantal S., Schimann H., Fromin N., Hättenschwiler S. (2014) C, N, and P fertilization in an Amazonian rainforest support stoichiometric dissimilarity as a driver of litter diversity effects on decomposition. Proceedings of the Royal Society B 281: 20141682

Fanin N., Hättenschwiler S., Fromin N. (2014) Litter fingerprint on microbial biomass, activity, and community structure in the underlying soil. Plant & Soil 379:79-91

Coulis M., Hättenschwiler S., Fromin N., David J.-F. (2013) Macroarthropod-microorganism interactions during the decomposition of Mediterranean shrub litter at different moisture levels. Soil Biology & Biochemistry 64: 114-121.

Fanin N., Fromin N., Buatois B., Hättenschwiler S. (2013) An experimental test of the hypothesis of non-homeostatic consumer stoichiometry in a plant litter-microbe system. Ecology Letters 16 : 764-772 doi: 10.1111/ele.12108

Fromin N., Saby N., Lensi R., Brunet D., Porte B., Domenach A.-M., Roggy J.-C. (2013) Spatial variability of soil microbial functioning in a tropical rainforest of French Guiana using nested sampling. Geoderma 197-198: 98-107

Fanin N., Barantal S., Fromin N., Schimann H., Schevin P., Hättenschwiler S. (2012) Distinct microbial limitations in litter and underlying soil revealed by Carbon and nutrient limitations in a tropical rainforest. PLoS ONE 7(12): e49990

Barantal S., Schimann H., Fromin N., Hättenschwiler S. (2012) Nutrient and carbon limitation on decomposition in an Amazonian moist forest. Ecosystems 15: 1039-1052

Fromin N., Porte B., Lensi R., Hamelin J., Domenach A.-M., Buatois B., Roggy J.-C. (2012) Spatial heterogeneity of the functional stability of microbial respiration process: A microcosm study using tropical forest soil. Journal of Soils and Sediments 12:1030-1039


External links

See my publications on ResearchGate

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