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LifeCLEF 2021


Results Publication

The overview paper summarizing the results of all LifeCLEF 2021 challenges is available: Springer version - author version (pdf)

Individual working notes of tasks organizers and participants can be found within CLEF 2021 CEUR-WS proceedings (in "LifeCLEF" section).

LifeCLEF 2021 Workshop - Thursday, 23rd Sept (in the context of CLEF conference, overall programme) meeting

Provided schedules are in Bucharest time: UTC+3
For Central Europan Summer Time (CEST, UTC+2, e.g. Paris): -1
For Pacific Daylight Time (PDT, UTC-7, e.g. California): -10
For Australian Eastern Standard Time (AEST, UTC+10 e.g Brisbane): +7

11:30 - 13:00 LifeCLEF session 1 - chair: Alexis Joly - ZOOM meeting session 1

11:30-12:05 Keynote talk - Jessie Oliver (Queensland Univ. of Tech) - Designing citizen science technologies that support people learning and improving artificial intelligence
12:05-12:20 BirdCLEF challenge overview - Stefan Kahl (Cornell, Chemnitz univ.)
12:20-12:30 BirdCLEF participant - Jean-Francois Puget (NVIDIA) - STFT Transformers for Bird Song Recognition
12:30-12:45 SnakeCLEF challenge overview - Lukáš Picek (Univ. of West Bohemia)
12:45-13:00 PlantCLEF challenge overview - Hervé Goëau (CIRAD, PlantNet)

15:30 - 17:00 LifeCLEF session 2 - chair: Hervé Goëau - ZOOM meeting session 2

15:30-16:00 Invited talk - Marijn van der Velde (EU JRC) - Digital rural landscape monitoring for agricultural and environmental policies
16:00-16:15 GeoLifeCLEF challenge overview - Titouan Lorieul (Inria, univ. of Montpellier)
16:15-16:25 SnakeCLEF participant - Louise Bloch (Department of Computer Science, University of Applied Sciences and Arts Dortmund) - EfficientNets and Vision Transformers for Snake Species Identification Using Image and Location Information
16:25-16:35 GeoLifeCLEF participant - Sachith Seneviratne (Univ. of Melbourne) - Contrastive Representation Learning on remote sensing imagery for species habitat prediction
16:35-17:00 Invited talk - Sara Beery (Caltech) - Beyond Benchmarks: Going from Competition-Winning Methods to Real-World Solutions


  • Jan 2020: registration opens for all LifeCLEF challenges
  • Jan-March 2021: training and test data release
  • 7 May 2021: deadline for submission of runs by participants
  • 14 May 2021: release of processed results by the task organizers
  • 28 May 2021: deadline for submission of working note papers by participants [CEUR-WS proceedings]
  • 11 June 2021: notification of acceptance of working note papers [CEUR-WS proceedings]
  • 2 July 2021: camera ready working note papers by participants and organizers
  • 21-24 Sept 2021: CLEF 2021 Bucharest, Romania

LifeCLEF 2021 brief overview

A brief overview of the whole LifeCLEF lab will be presented at ECIR 2021 conference (March 28 – April 1, 2021).


Building accurate knowledge of the identity, the geographic distribution and the evolution of species is essential for a sustainable development of humanity, as well as for biodiversity conservation. However, the burden of the routine identification of plants and animals in the field is strongly penalizing the aggregation of new data and knowledge. Identifying and naming living plants or animals is actually almost impossible for the general public and often a difficult task for professionals and naturalists. Bridging this gap is a key challenge towards enabling effective biodiversity monitoring systems. The LifeCLEF evaluation campaign aims at boosting and evaluating the advances in this domain since 2011. In particular, the 2021 edition proposes three data-oriented challenges related to the identification and prediction of biodiversity: (i) BirdCLEF 2021: bird species recognition in audio soundscapes, (ii) GeoLifeCLEF 2021: location-based prediction of species based on environmental and occurrence data, (iii) PlantCLEF 2021: a cross-domain image classification task aimed at identifying plants in pictures based on a training set of herbarium sheets, and (iv) SnakeCLEF 2021: an image-based snake identification task.


The winner of each of the four LifeCLEF 2021 challenges will be offered a cloud credit grants of 5k USD as part of Microsoft's AI for earth program.

Registration and data access

Please look at the registration process on the page of each challenge.

CLEF Conference and working notes

CLEF Initiative CLEF 2021 logo

LifeCLEF lab is part of the Conference and Labs of the Evaluation Forum (CLEF). CLEF consists of independent peer-reviewed workshops on a broad range of challenges in the fields of multilingual and multimodal information access evaluation, and a set of benchmarking activities carried in various labs designed to test different aspects of mono and cross-language Information retrieval systems. More details can be found on the CLEF 2021 website.

Submitting a working note with the full description of the methods used in each run is mandatory. Any run that could not be reproduced thanks to its description in the working notes might be removed from the official publication of the results. Working notes are published within CEUR-WS proceedings, resulting in an assignment of an individual DOI (URN) and an indexing by many bibliography systems including DBLP. According to the CEUR-WS policies, a light review of the working notes will be conducted by LifeCLEF organizing committee to ensure quality. As an illustration, LifeCLEF 2020 working notes (task overviews and participant working notes) can be found within CLEF 2020 CEUR-WS proceedings.

Organizing Team


  • Alexis Joly, INRIA / University of Montpellier, LIRMM, ZENITH team, France,, France, alexis.joly(replace-by-an-arrobe)
  • Henning Müller, University of Applied Sciences Western Switzerland in Sierre, Switzerland, henning.mueller(replace-by-an-arrobe)


  • Stefan Kahl, Center for Conservation Bioacoustics, Cornell Lab of Ornithology, Cornell University, USA, sk2487(replace-by-an-arrobe)>
  • Willem-Pier Vellinga, Xeno-Canto foundation for nature sounds, The Netherlands, wp(replace-by-an-arrobe)
  • Holger Klinck, Center for Conservation Bioacoustics, Cornell Lab of Ornithology, Cornell University, USA, holger.klinck(replace-by-an-arrobe)>
  • Tom Denton, Google LLC, San Francisco, USA, tmd(replace-by-an-arrobe)
  • Hervé Glotin, University of Toulon, France, glotin(replace-by-an-arrobe)


  • Titouan Lorieul, University of Montpellier, Inria, LIRMM, titouan.lorieul(replace-by-an-arrobe)
  • Elijah Cole, Caltech, Computing and Mathematical Sciences, US, ecole(replace-by-an-arrobe)
  • Benjamin Deneu, INRIA / University of Montpellier, LIRMM, ZENITH team, France, benjamin.deneu(replace-by-an-arrobe)
  • Christophe Botella, Université de Grenoble Rhônes Alpes, France, christophe.botella(replace-by-an-arrobe)
  • Maximilien Servajean, LIRMM – UMPV, Montpellier, France, Maximilien.Servajean(replace-by-an-arrobe)


  • Hervé Goëau, Cirad - AMAP, Montpellier, France.
  • Pierre Bonnet, Cirad – AMAP, Montpellier, France, pierre.bonnet(replace-by-an-arrobe)


  • Lukas Picek, Dept. of Cybernetics, FAV, University of West Bohemia, Czechia, lukaspicek(replace-by-an-arrobe)
  • Andrew Durso, Department of Biological Sciences, Florida Gulf Coast University, Fort Myers, USA
  • Rafael Ruiz De Castaneda, University of Geneva, Switzerland, Rafael.RuizDeCastaneda(replace-by-an-arrobe)

Infrastructure support

  • Ivan Eggel, University of Applied Sciences Western Switzerland, Sierre, Switzerland, ivan.eggel(replace-by-an-arrobe)
  • Julien Champ, INRIA Sophia-Antipolis - ZENITH team, LIRMM, University of Montpellier, France, julien.champ(replace-by-an-arrobe)


Pl@ntNet      Pl@ntNet      Inria          CNRS      Xeno-Canto      Caltech      Cornell      Chemnitz      UM
ZCU-FAV      Cos4Cloud