Cited by 762Wildlife Ecology and ConservationSpecies Distribution and Climate ChangeAnimal Ecology and Behavior Studies

The DOI matches its Crossref record; 161 of the 162 references it cites were found in a registry or an index; 5 of the 101 sources its claims cite were checked for support.

Perspectives in machine learning for wildlife conservation

Open access

Abstract

Inexpensive and accessible sensors are accelerating data acquisition in animal ecology. These technologies hold great potential for large-scale ecological understanding, but are limited by current processing approaches which inefficiently distill data into relevant information. We argue that animal ecologists can capitalize on large datasets generated by modern sensors by combining machine learning approaches with domain knowledge. Incorporating machine learning into ecological workflows could improve inputs for ecological models and lead to integrated hybrid modeling tools. This approach will require close interdisciplinary collaboration to ensure the quality of novel approaches and train a new generation of data scientists in ecology and conservation.

Overview

AI snapshot

Written from the paper’s full text.

TL;DR

This Perspective argues that animal ecology and conservation can exploit modern sensor data by integrating machine learning with ecological domain knowledge, rather than applying off-the-shelf ML. It reviews success stories across detection, re-identification, pose estimation, environmental reconstruction, and biodiversity modeling, and outlines attention points for responsible, interdisciplinary use.

Key findings

  • Sensor expansion creates a data deluge: Agouti hosted 31 million images in August 2021 with only 1.5 million annotated, while Wildlife Insights was automatically processing 17 million camera trap images in August 2021; ML analysis cost reductions are estimated between 2 and 10×.
  • ML/DL improve detection and identification: large mammal detection in Kuzikus improved from 20% to 80% recall at 75% precision; chimpanzee face recognition on 23 individuals and 1 million images achieved >90% accuracy (DL 84% vs. human novices 20% and experts 42%); tiger re-identification exceeded 90% across 92 tigers and 8,000 video clips.
  • Domain-informed/hybrid models improve performance: Context R-CNN increased mean species identification precision on Snapshot Serengeti by 17.9%; taxonomic and locational priors improved plant classification by about 5%; distribution and photographer-bias priors improved iNaturalist accuracy by up to 12%; expert ranger knowledge improved poaching predictions.
  • Operational examples show scale: MegaDetector was used by Wildlife Protection Solutions across over 400 connected cameras in 18 countries, analyzing over 900K images in a year and detecting at least one real threat per week; Idaho Department of Fish and Game automated 9.5 million of 11 million camera trap images, halved labeling costs, and reduced a ~5-year labeling lag.

Methods

  • Perspective/narrative review, not a primary empirical study; it synthesizes literature and case studies at the interface of machine learning, animal ecology, and wildlife conservation.
  • Covers sensor types including camera traps, bioacoustic sensors, on-animal bio-loggers, UAVs, satellites, and community science, and ML tasks including detection/classification, individual re-identification, pose/3D reconstruction, environmental reconstruction, and species richness/interaction modeling.
  • Main analysis is qualitative synthesis with cited performance examples; no systematic search strategy, meta-analysis, or new dataset is described.

Limitations

  • Stated by the paper: geographic, sensor, and species biases can limit model generalization; quality control and uncertainty estimation are urgently needed; open data sharing carries ethical/privacy risks such as poacher access; and ML has environmental and financial costs.
  • Stated by the paper: community science labels can be noisy or erroneous; drone flights below 150 m can significantly affect mammal behavior; passive acoustic monitoring and camera traps face data-scale, domain-shift, and labeled-data scarcity challenges.
  • Evident from the text: as a Perspective, it is not a systematic review and reports selected examples rather than exhaustive evidence; it presents no primary data collection or formal quantitative synthesis.

Model-written summary. Check it against the paper before relying on it.

Integrity signals

Registry

Crossref · 10.1038/s41467-022-27980-y

Cites

161 of 161 references verified0 citation errors · 0 not checkable

Statistics

Nothing to recompute.

Figures

Fig. 1 Examples of research acceleration by machine learning-based systems in animal ecology. a The BirdNET algorithm61 was used to detect Carolina wren vocalizations in more than 35,000 h of passive acoustic monitoring data from Ithaca, New York, allowing researchers to document the gradual recovery of the population following a harsh winter season in 2015. b Machine-learning algorithms were used to analyze movement of savannah herbivores fitted with bio-logging devices in order to identify human threats. The method can localize human intruders to within 500 m, suggesting `sentinel animals' may be a useful tool in the fight against wildlife poaching148. c TRex, a new image-based tracking software, can track the movement and posture of hundreds of individually-recognized animals in real-time. Here the software has been used to visualize the formation of trails in a termite colony149. d, e Pose estimation software, such as DeepPoseKit (d)75 and DeepLabCut (e)74,142 allows researchers to track the body position of individual animals from video imagery, including drone footage, and estimate 3D postures in the wild. Panels b, c, and d are reproduced under CC BY 4.0 licenses. Panels b and d are cropped versions of the originals; the legend for panel b has been rewritten and reorganized. Panel e is reproduced with permission from Joska et al.142.
Fig. 1 Examples of research acceleration by machine learning-based systems in animal ecology. a The BirdNET algorithm61 was used to detect Carolina wren vocalizations in more than 35,000 h of passive acoustic monitoring data from Ithaca, New York, allowing researchers to document the gradual recovery of the population following a harsh winter season in 2015. b Machine-learning algorithms were used to analyze movement of savannah herbivores fitted with bio-logging devices in order to identify human threats. The method can localize human intruders to within 500 m, suggesting `sentinel animals' may be a useful tool in the fight against wildlife poaching148. c TRex, a new image-based tracking software, can track the movement and posture of hundreds of individually-recognized animals in real-time. Here the software has been used to visualize the formation of trails in a termite colony149. d, e Pose estimation software, such as DeepPoseKit (d)75 and DeepLabCut (e)74,142 allows researchers to track the body position of individual animals from video imagery, including drone footage, and estimate 3D postures in the wild. Panels b, c, and d are reproduced under CC BY 4.0 licenses. Panels b and d are cropped versions of the originals; the legend for panel b has been rewritten and reorganized. Panel e is reproduced with permission from Joska et al.142.CC BY · PubMed Central
Fig. 2 Incorporating ML into the ecological scientific process. Traditional ecological research pipeline (colored text and boxes) and contributions of ML to the different stages discussed in this paper (black text).
Fig. 2 Incorporating ML into the ecological scientific process. Traditional ecological research pipeline (colored text and boxes) and contributions of ML to the different stages discussed in this paper (black text).CC BY · PubMed Central
Fig. 3 A variety of sensors used in animal ecology. Studies frequently combine data from multiple sensors at the same geographic location, or data from multiple locations to achieve deeper ecological insights. Sentinel-2 (ESA) satellite image courtesy of the U.S. Geological Survey.
Fig. 3 A variety of sensors used in animal ecology. Studies frequently combine data from multiple sensors at the same geographic location, or data from multiple locations to achieve deeper ecological insights. Sentinel-2 (ESA) satellite image courtesy of the U.S. Geological Survey.CC BY · PubMed Central
Fig. 4 The Wildbook Ecosystem. Wildbook allows scientists and wildlife managers to leverage the power of communities and ML to monitor wildlife populations. Images of target species are collected via research projects, community science events (e.g., the Great Grevy’s Rally; see text), or by scraping social media platforms using Wildbook AI tools. Wildbook software uses computer vision technology to process the images, yielding species and individual identities for the photographed animals. This information is stored in databases on Wildbook data management servers. The data and biological insights generated by Wildbook facilitates exchange of expertise between biologists, data scientists, and stakeholder communities around the world.
Fig. 4 The Wildbook Ecosystem. Wildbook allows scientists and wildlife managers to leverage the power of communities and ML to monitor wildlife populations. Images of target species are collected via research projects, community science events (e.g., the Great Grevy’s Rally; see text), or by scraping social media platforms using Wildbook AI tools. Wildbook software uses computer vision technology to process the images, yielding species and individual identities for the photographed animals. This information is stored in databases on Wildbook data management servers. The data and biological insights generated by Wildbook facilitates exchange of expertise between biologists, data scientists, and stakeholder communities around the world.CC BY · PubMed Central
Fig. 5 Setting a common vocabulary: ecology tasks vs corresponding ones in computer vision. Imagery can be used to capture a range of behavioral and ecological data, which can be processed into usable information with ML tools. Aerial imagery (from drones, or satellites for large species) can be used to localize animals and track their movements over time and model the 3D structure of landscapes using photogrammetry. Posture estimation tools allow researchers to estimate animal postures, which can then be used to infer behaviors using clustering algorithms. Finally, computer vision techniques allow for the identification and re-identification of known individuals across encounters.
Fig. 5 Setting a common vocabulary: ecology tasks vs corresponding ones in computer vision. Imagery can be used to capture a range of behavioral and ecological data, which can be processed into usable information with ML tools. Aerial imagery (from drones, or satellites for large species) can be used to localize animals and track their movements over time and model the 3D structure of landscapes using photogrammetry. Posture estimation tools allow researchers to estimate animal postures, which can then be used to infer behaviors using clustering algorithms. Finally, computer vision techniques allow for the identification and re-identification of known individuals across encounters.CC BY · PubMed Central
Fig. 6 AI for Wildlife Conservation in Practice: the MegaDetector. The near-universal need of all camera trap projects to efficiently filter empty images and localize humans, animals, and vehicles in camera trap data, combined with the robustness to geographic, hardware, and species variability the MegaDetector provides due to its large, diverse training set makes it a useful, practical tool for many conservation applications out of the box. The work done by the Microsoft AI for Earth team to provide assistance running the model via hands-on engineering assistance, open-source tools, and a public API have made the MegaDetector accessible to ecologists and a part of the ecological research workflow for over 30 organizations worldwide.
Fig. 6 AI for Wildlife Conservation in Practice: the MegaDetector. The near-universal need of all camera trap projects to efficiently filter empty images and localize humans, animals, and vehicles in camera trap data, combined with the robustness to geographic, hardware, and species variability the MegaDetector provides due to its large, diverse training set makes it a useful, practical tool for many conservation applications out of the box. The work done by the Microsoft AI for Earth team to provide assistance running the model via hands-on engineering assistance, open-source tools, and a public API have made the MegaDetector accessible to ecologists and a part of the ecological research workflow for over 30 organizations worldwide.CC BY · PubMed Central

Verification

Claims the paper makes

67 Not checked yet · 62 No basis given · 23 Own interpretation · 2 Supported · 1 Partly supported · accuracy not yet measured

Verify all 96 references — free account

Show all 45 claims

  • It may state two separate claims as one. 60
  • Probably not a substantial claim. 74
110 of 110
  • The paper relies on this without support.

    Community science efforts increase public engagement in science and conservation.

    “Community science efforts also increase public engagement in science and conservation.”
  • The paper relies on this without support.

    Machine and deep learning are necessary accelerators for wildlife research and conservation actions in natural reserves.

    “Machine and deep learning are becoming necessary accelerators for wildlife research and conservation actions in natural reserves.”
  • The paper relies on this without support.

    Environmental costs of AI are often disregarded because energy consumption of large calculations is still considered an endless resource.

    “environmental costs of AI are often disregarded, as energy consumption of large calculations is still considered an endless resource (assuming that the money to pay for it is available).”
  • The paper relies on this without support.

    GeoLifeCLEF curated a dataset of 1.9 million iNaturalist observations from North America and France depicting over 31,000 species, together with environmental predictors, and asked users to predict a ranked list of likely species per geospatial grid cell.

    “GeoLifeCLEF curated a dataset of 1.9 million iNaturalist observations from North America and France depicting over 31,000 species, together with environmental predictors (land cover, altitude, climatic data, etc.), and asked users to predict a ranked list of likely species per geospatial grid cell.”
  • The paper relies on this without support.

    The winners of the 2021 GeoLifeCLEF edition achieved only an approximate 26% top-30 accuracy.

    “This challenging task remains an open challenge—the winners of the 2021 edition achieved only an approximate 26% top-30 accuracy.”
  • The paper relies on this without support.

    Animal ecology and wildlife conservation need to make sense of large and ever-increasing streams of data to provide accurate estimations of populations, understand animal behavior and fight against poaching and loss of biodiversity.

    “Animal ecology and wildlife conservation need to make sense of large and ever-increasing streams of data to provide accurate estimations of populations, understand animal behavior and fight against poaching and loss of biodiversity.”
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Citations

Cites

Show all 162 references

Research works printed but not linked: 2

  1. Sugai, L. S. M., Silva, T. S. F., Ribeiro Jr, J. W. & Llusia, D. Terrestrial passive acoustic monitoring: review and perspectives. BioScience 69, 15–25 (2019). · DOI
  2. Kellenberger, B., Veen., T., Folmer, E. & Tuia, D. 21,000 birds in 4.5 hours: efficient large-scale seabird detection with machine learning. Remote Sens. Ecol. Conserv. https://doi.org/10.1002/rse2.200 (2021). · DOI

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Metadata

Authors
Tuia, D., Kellenberger, B., Beery, S., Costelloe, B. R., Zuffi, S., Risse, B., Mathis, A., Mathis, M. W., van Langevelde, F., Burghardt, T., Kays, R., Klinck, H., Wikelski, M., Couzin, I. D., van Horn, G., Crofoot, M. C., Stewart, C. V., & Berger-Wolf, T.
Affiliations
  • École Polytechnique Fédérale de Lausanne (CH)
  • California Institute of Technology (US)
  • University of Konstanz (DE)
  • Istituto di Matematica Applicata e Tecnologie Informatiche (IT)
  • University of Münster (DE)
  • University of Bristol (GB)
  • North Carolina Museum of Natural Sciences (US)
  • Cornell University (US)
  • Rensselaer Polytechnic Institute (US)
  • The Ohio State University (US)
Corresponding author
Tuia, Devis
Venue
Nature Communications
Published
2022-02-09
Volume
13
Issue
1
Pages
792-792
ISSN
2041-1723 (ISSN-L)
OpenAlex
W4210883322
Cited by
740
References
162
Citations by year
2026: 189 · 2025: 192 · 2024: 156 · 2023: 144 · 2022: 59
FWCI
12.64
Type
journal article
Language
en
Open access
Locations
  • Nature Communications (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • arXiv (Cornell University) (submittedVersion)
  • CaltechAUTHORS (California Institute of Technology) (submittedVersion, cc-by)
  • RePEc: Research Papers in Economics (submittedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • Infoscience (Ecole Polytechnique Fédérale de Lausanne) (submittedVersion, cc-by-nc-nd)
  • CNR ExploRA (submittedVersion, cc-by)
  • KOPS (University of Konstanz) (submittedVersion)
  • Socio-Environmental Systems Modeling (submittedVersion, cc-by)
  • Explore Bristol Research (submittedVersion, cc-by)
  • Data Archiving and Networked Services (DANS) (submittedVersion, other-oa)
  • arXiv (Cornell University)
Funders
  • National Science Foundation (1745301, IIS 1514174, IOS 1250895, 1453555, 1550853)
  • Deutsche Forschungsgemeinschaft (EXC 2117-422037984)
  • Fondation Bertarelli
  • David and Lucile Packard Foundation (2016-65130)
Topics
  • Physical Sciences › Environmental Science › Ecology › Wildlife Ecology and Conservation
  • Physical Sciences › Environmental Science › Ecological Modeling › Species Distribution and Climate Change
  • Physical Sciences › Environmental Science › Ecology › Animal Ecology and Behavior Studies
Keywords
machine learning, wildlife conservation, animal ecology, low-cost sensors, ecological data, hybrid modeling, domain knowledge integration, ecological modeling, interdisciplinary collaboration, data science education
MeSH terms
Machine Learning, Animals, Animals, Wild, Automation, Conservation of Natural Resources, Ecology, Models, Theoretical, Ecosystem, Knowledge

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