ECOLAB > Pages profils > AZEMAR Frédéric

Profil de Frédéric AZEMAR

Scuba diving investigations in the Neouvielle park

Email :

Téléphone / phone: 05 61 55 67 29

Bureau / office : 335

Institution : UPS

Statut / status: ITA

Adresse professionnelle / address:

Laboratoire Ecologie fonctionnelle et environnement (EcoLab)
Université Toulouse III Paul Sabatier
Batiment 4R1
Porte 335
31062 Toulouse cedex 9

Site perso / personal website :

Professional positions:

  • UPS, Engineer, Functional Ecology and Environment Laboratory - UMR 5245 (France; 2006-present).

Academic background:

  • 2007- Ph.D. Toulouse III University, EcoLab (France): Ecology of the zooplankton of the Scheldt estuary (Belgium).
  • 2001- Master degree. Toulouse III University, CESAC (France), Study of the predation impact of the palmate newt (Triturus helveticus) and the notonect (Notonecta maculata) on a natural population of zooplankton.

Research area: Biodiversity and Freshwater ecology

My goal is to investigate the freshwater diversity in relation with environmental pressures and changes. In this context, I am interested by the trophic interactions. My study models are diverse, from the zooplankton to fishes.

My works realized in collaboration with French and foreign colleagues are based on both laboratory and in situ experiments and on field observations, including scientific scuba diving.

PhD thesis co-supervisor, with Pr. M. Tackx (Univ. Toulouse) and Dr. B. Alhou (Univ. Niamey, Niger).

  • Hassane Souley Adamou (2017-2020). Impact of the city of Niamey on the zooplankton community of the Niger river.


  • Responsible of the Scientific SCUBA diving team of EcoLab, since 2007.
  • Responsible of the Biologic analyses service.
  • Responsible of the microscope labs.


  • RECIF LOT, co-responsible, 2013-2015.
  • Fish farm impact on the Céret river, co-responsible with EGIS-Eau.


  • Member of the laboratory board, since 2007.
  • Member of the laboratory informatic commission.
  • Member of the health and safety commission (4R1 site).


  • Member of an expert commitee for the HCERES: Evaluation of the research unit BOREA (2017).

Main/Recent publications


 Azémar F. (2007) L’écologie du zooplancton de l’estuaire de l’Escaut (Belgique). Thèse de l’UPS.



  • Dejean A., Compin A., Delabie J.H.C., Azémar F., Corbara B. & Leponce M. (2019) Biotic and abiotic determinants of the formation of ant mosaics in primary Neotropical rainforests. Ecological Entomology DOI: 10.1111/een.12735


  • Dejean A., Orivel J., Leponce M., Compin A., Delabie J.H.C., Azémar F. & Corbara B. (2018) Ant-plant relationships in the canopy of an Amazonian rainforest: The presence of an ant mosaic. Biological Journal of the Linnean Society 125(2):344-354
  • Dejean A., Azémar F., Petitclerc F., Delabie J.H.C., Corbara B., Leroy C., Cereghino R. & Compin (2018) Highly modular pattern in ant-plant interactions involving specialized and non-specialized myrmecophytes.The Science of Nature 105 (7-8). DOI: 10.1007/s00114-018-1570-0
  • Servigne P., Orivel J., Azémar F., Carpenter J., Dejean A. & Corbara B. (2018) An uneasy alliance: a nesting association between aggressive ants and equally fierce social wasps. Insect Sciences DOI: 10.1111/1744-7917.12597
  • Capdeville C., Abdallah K., Buffan-Dubau E., Lin C., Azémar F., Lambs L., Fromard F., Rols J.-L. & J. Leflaive (2018) Limited impact of several years of pretreated wastewater discharge on fauna and vegetation in a mangrove ecosystem. Marine Pollution Bulletin 129: 379-391
  • Dejean A., Compin A., Leponce M., Azémar F., Bonhomme C., Talaga S., Pélozuelo L. Hénaut Y. & Corbara B. (2018) Ants impact the composition of the aquatic macroinvertebrate communities of a myrmecophytic tank bromeliad. Comptes Rendus Biologies 341(3): 200-207
  • Hénaut Y., Corbara B., Azémar F., Céréghino R. & A. Dejean (2018) An arboreal spider protects its offspring by diving into the water of tank bromeliads. Comptes Rendus Biologies 341(3): 196-199
  • Le Coz M., Chambord S., Souissi S., Meire P., Ovaert J., Buffan-Dubau E., Prygiel J., Azémar, F., Sossou A.C.,  Lamothe S., Julien F., Ouddane B., Net S., Dumoulin D. & Tackx M. (2018) Are zooplankton communities structured by taxa ecological niches or by hydrological features? Ecohydrology DOI 10.1002/eco.1956


  • Dejean A., Petitclerc F., Azémar F., Pelozuelo L., Talaga S., Leponce M., Compin A. (2017) Aquatic life in Neotropical rainforest canopies: techniques using artificial phytotelmata to study the invertebrate communities inhabiting therein Vie aquatique dans les canopées de forêts Néotropicales: techniques utilisant des phytotelmes artificiels pour étudier les communautés d'invertébrés. Comptes Rendus Biologies 341(1): DOI 10.1016/j.crvi.2017.10.003
  • Dejean A., Rodríguez-Pérez H., Carpenter J.M., Azémar F. & Corbara B. (2017) The predatory behavior of the Neotropical social wasp Polybia rejecta. Behavioural Processes 140: 161-168
  • Le Coz M., Chambord S., Meire P., Maris T., Azémar, F., Buffan-Dubau E., Kromkamp J.C., Sossou A.C., Prygiel J., Spronk G., Lamothe S., Ouddane B., Rabodinirina S., Net S., Dumoulin D., Peene J., Souissi S. & Tackx M. (2017) Test of some ecological concepts on the longitudinal distribution of zooplankton along a lowland water course. Hydrobiologia 796(3): DOI 10.1007/s10750-017-3256-6
  • Dejean A., Petitclerc F., Compin A., Azémar F., Corbara B., Delabie J.H.C. & Leroy C. (2017) Hollow internodes permit a Neotropical understory plant to shelter multiple mutualistic ant species, obtaining protection and nutrient provisioning (myrmecotrophy). The American Naturalist 190(5) DOI: 10.1086/693782
  • Dejean A., Azémar F., Libert M., Compin A., Herault B., Orivel J., Bouyer T. & Corbara B. (2017) Ant-lepidopteran associations along African forest edges. The Science of Nature 104: 7. doi:10.1007/s00114-016-1424-6


  • Chambord S., Maris T., Colas F., Van Engeland T., Sossou A. C., Azémar F., Le Coz M., Cox T., Buisson L., Souissi S., Meire P. & Tackx M. (2016) Mesozooplankton affinities in a recovering freshwater estuary. Estuarine, Coastal and Shelf Science: doi:10.1016/j.ecss.2016.04.016
  • Liu Y., Dedieu K., Sánchez-Pérez J.-M., Montuelle B., Buffan-Dubau E., Julien F., Azémar F., Sauvage S., Marmonier P., Yao J., Vervier P. & Gerino M. (2016) Role of biodiversity in the biogeochemical processes at the water-sediment interface of macroporous river bed: an experimental approach. Ecological Engineering: doi:10.1016/j.ecoleng.2016.03.049
  • Boulêtreau S., Verdeyroux P., Lorthiois E., Azémar F., Compin A. & F. Santoul (2016) Do you eat or not? Predation behaviour of European catfish (Silurus glanis) toward live bait on a hook. The Open Fish Science Journal 9: 8-14
  • Dejean A., Orivel J., Azémar F., Hérault B. & Corbara B. (2016) A cuckoo-like parasitic moth leads African weaver ant colonies to their ruin. Scientific reports 6:23778, doi: 10.1038/srep2377
  • Dejean A., Azémar F., Céréghino R., Leponce M., Corbara B., Orivel J., Compin A. (2015) The dynamics of ant mosaics in tropical rainforests characterized using the Self-Organizing Map algorithm. Insect Science : doi:10.1111/1744-7917.12208


  • Le Cohu R., Azémar F. & Tudesque L. (2015) Cymbella marvanii sp. nov., a new Cymbella species from the French Pyrenees. Diatom Research 30(3): doi:10.1080/0269249X.2015.1071284
  • Dejean A., Ryder S., Bolton B., Compin A., Leponce M., Azémar F., Céréghino R., Orivel J., Corbara B. (2015) How territoriality and host-tree taxa determine the structure of ant mosaics. Naturwissenschaften 102(5-6):1282
  • Le Guen R., Corbara B., Rossi V., Azémar F., Dejean A. (2015) Reciprocal protection from natural enemies in an ant-wasp association. Comptes Rendus Biologies 338(4):255-9. doi: 10.1016/j.crvi.2015.02.002
  • Dejean A., Azémar F., Céréghino R., Leponce M., Corbara B., Orivel J., Compin A. (2015) The dynamics of ant mosaics in tropical rainforests characterized using the Self-Organizing Map algorithm. Insect Science : doi:10.1111/1744-7917.12208


  • Hénaut Y., Corbara B., Pélozuelo L., Azémar F., Céréghino R., Herault B., Dejean A. (2014) A tank bromeliad favors spider presence in a tropical inundated forest. PloS ONE 9(12): e114592. doi:10.1371/journal.pone.0114592
  • Dejean A., Azémar F., Roux O. (2014) An invasive ant species able to counterattack marabunta raids. Comptes Rendus Biologies 337: 474-479
  • Schmeller D. S., Blooi M., Martel A., Garner T. W. J., Fisher M. C., Azémar F., Clare F. C., Leclerc C., Jäger L., Guevara-Nieto M., Loyau A., Pasmans F. (2014) Microscopic aquatic predators strongly affect infection dynamics of globally emerged pathogen. Current Biology 24(2): 176-180


  • Dejean A., Revel M., Azémar F. and Roux O. (2013) Altruism during predation in an assassin bug. Naturwissenschaften 100(10): 913-922
  • Mialet B., Majdi N., Tackx M., Azémar F. and Buffan-Dubau E. (2013) Selective feeding of bdelloid rotifers in river biofilms. Plos one 8(9): e75352


  • Cucherousset J., Boulêtreau S., Azémar F., Compin A., Guillaume M. & Santoul F. (2012) “Freshwater Killer Whales” : beaching behavior of an alien fish to hunt land birds. Plos one 7 (12): e50840
  • Dejean A., Delabie J. H. C., Corbara B., Azémar F., Groc S., Orivel J. and Leponce M. (2012) The ecology and feeding habits of the arboreal trap-jawed ant Daceton armigerum. Plos one 7 (6): e37683
  • Dejean A., Corbara B., Azémar F., Carpenter J. M. (2012) When attempted cleptobiosis turns fatal. Naturwissenschaften 99(7): 579-582


  • Le Cohu R., Lange Bertalot H. & Azémar F. (2011). Cymbopleura pyrenaica sp. nov. (Bacillariophyceae) and some other Cymbopleura species rarely observed in some lakes of the French Pyrenees. Cryptogamie, Algologie 32(4): 337-349
  • Le Cohu R. & Azémar F.(2011).Quelques remarques sur quatre espèces de Fragilariacae des Pyrénées françaises. Bull. Soc. Hist. Nat. Toulouse. 147: 3-10
  • Mialet B., Gouzou J., Azémar F., Maris T., Sossou C., Toumi N., Van Damme S., Meire P. & Tackx M. (2011). Response of zooplankton to improving water quality in the Scheldt estuary (Belgium). Est. Coast. Shelf Sci. 93: 47-57
  • Lagrue C., Azémar F., Besson A., Lamothe S. & Lecerf A. (2011). Novel ligature methods to study sublethal effects of sit-and-wait predators : description and test using Cordulegaster boltonii (Donovan, 1807) larvae (Anisoptera: Cordulegastridae). Odonatologica 40: 95-103
  • Le Cohu R. & Azémar F. (2011). Etude morphologique de quelques Cymbellaceae des Pyrénées françaises incluant la description d’une espèce nouvelle: Delicata couseranensis sp. nov. Cryptogamie Algologie 32: 131-155
  • Boulêtreau S., Charcosset J.-Y., Gamby J., Lyautey E., Mastrorillo S., Azémar F., Moulin F., Tribollet B. & Garabetian F. (2011). Rotating disk electrodes to monitor river biofilm thickness and elasticity. Water Research 45: 1347-1357


  • Le Cohu R. & Azémar F. (2010). Les genres Adlafia, Kobayasiella, Fallacia, Microstatus et Naviculadicta (Bacillariophycées) recensés dans quelques lacs des Pyrénées françaises. Bull. Soc. Hist. Nat. Toulouse. 146: 5-13
  • Azémar F., Maris, T., Mialet, B., Segers, H., Van Damme, S., Meire, P. & Tackx, M. (2010). Rotifers in the Schelde estuary (Belgium): a test of taxonomic relevance. J. Plankton Res. 32: 981-997
  • Mialet B., Azémar F., Maris T., Sossou C., Ruiz P., Lionard M., Van Damme S., Lecerf A., Muylaert K., Toumi N. & Tackx M. (2010). Spatial spring distribution of the copepod Eurytemora affinis (Copepoda, Calanoida) in a restoring estuary, the Scheldt (Belgium). Est. Coast. Shelf Sci., 88: 116-124


  • Azémar F., Boulêtreau S., Lionard M., Muylaert K., Vyverman W., Meire P. & Tackx M. (2007) Looking for general trends in trophic interaction among estuarine micro- and mesozooplankton proposing a data standardization method. J. Plankton Res., 29: i135-i147
  • Azémar F., Van Damme S., Meire P. & Tackx M. (2007) New occurrence of Lecane decipiens (Murray, 1913) and some other alien rotifers in the Schelde estuary (Belgium). Belg.J. Zool., 137(1): 75-83


  • Lionard M., Azémar F., Boulêtreau S., Muylaert K., Tackx M. & Vyverman W. (2005) Grazing by meso- and microzooplankton on phytoplankton in the upper reaches of the Schelde estuary (Belgium). Est. Coast. Shelf Sci., 64: 764-774
  • Tackx M., Azémar F., Boulêtreau S., De Pauw N., Sautour B., Bakker B., Gasparini S., Soetaert K., Van Damme S. & Meire P. (2005) Zooplankton in the Schelde estuary, Belgium and the Netherlands : long-term trends in spring populations. Hydrobiologia, 540: 275-278


  • Tackx M., De Pauw N., Van Mieghem R., Azémar F., Hannouti A., Van Damme S., Fiers F., Daro N. & Meire P. (2004) Zooplankton in the Schelde estuary, Belgium and The Netherlands. Spatial and temporal patterns. J. Plankton Res., 26: 133-141

Ongoing projects:

STeM-2018, Projet Interdisciplinaire de Guyane - AAP2018

MONEOS-OMES, Flemmish government, Belgium. 2002- …



Past projects:

BIOFOZI Nord-Pas de Calais Region, FRB. 2013-2015

RAINWEBS ANR. 12/2012-2016

RECIF LOT Fishery federation of Lot, Midi-Pyrenees Region, Water Agency. 2013-2015

SUBULAIRE National parc of Pyrenees, 2013-2016

POEMS, ZA Pygar, 2016

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