Assessing species interactions using integrated predator-prey models
Inferring the strength of species interactions from demographic data is a challenging task. The Integrated Population Modelling (IPM) approach, bringing together population counts, capture-recapture, and individual-level fecundity data into a unified model framework, has been extended from single sp...
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| Language: | English |
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2023-11-01
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| Series: | Peer Community Journal |
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| Online Access: | https://peercommunityjournal.org/articles/10.24072/pcjournal.337/ |
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| author | Paquet, Matthieu Barraquand, Frédéric |
| author_facet | Paquet, Matthieu Barraquand, Frédéric |
| author_sort | Paquet, Matthieu |
| collection | DOAJ |
| description | Inferring the strength of species interactions from demographic data is a challenging task. The Integrated Population Modelling (IPM) approach, bringing together population counts, capture-recapture, and individual-level fecundity data into a unified model framework, has been extended from single species to the community level. This allows to specify IPMs for multiple species with interactions specified as links between vital rates and stage-specific densities. However, there is no evaluation of such models when interactions are actually absent---while any interaction inference method runs the risk of producing false positives. We investigate here whether multispecies IPMs could output interactions where there are in fact none, building on an existing predator-prey IPM. We show that interspecific density-dependence estimates are centered on zero when simulated to be zero, and therefore their estimation is unbiased. Their coverage probability, quantifying how many times credible intervals include zero, is also satisfactory. We further confirm that adding random temporal variation to multispecies density-dependent link functions does not alter these results. This study therefore reaffirms the potential of multispecies IPMs to infer correctly how biotic interactions influence demography, although future studies should investigate model misspecifications.
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| format | Article |
| id | doaj-art-f535204c804a44b4aec4a7a0edfffdae |
| institution | Kabale University |
| issn | 2804-3871 |
| language | English |
| publishDate | 2023-11-01 |
| publisher | Peer Community In |
| record_format | Article |
| series | Peer Community Journal |
| spelling | doaj-art-f535204c804a44b4aec4a7a0edfffdae2025-02-07T10:16:48ZengPeer Community InPeer Community Journal2804-38712023-11-01310.24072/pcjournal.33710.24072/pcjournal.337Assessing species interactions using integrated predator-prey models Paquet, Matthieu0https://orcid.org/0000-0003-1182-2299Barraquand, Frédéric1https://orcid.org/0000-0002-4759-0269Institute of Mathematics of Bordeaux, University of Bordeaux, CNRS, Bordeaux INP, Talence, FranceInstitute of Mathematics of Bordeaux, University of Bordeaux, CNRS, Bordeaux INP, Talence, FranceInferring the strength of species interactions from demographic data is a challenging task. The Integrated Population Modelling (IPM) approach, bringing together population counts, capture-recapture, and individual-level fecundity data into a unified model framework, has been extended from single species to the community level. This allows to specify IPMs for multiple species with interactions specified as links between vital rates and stage-specific densities. However, there is no evaluation of such models when interactions are actually absent---while any interaction inference method runs the risk of producing false positives. We investigate here whether multispecies IPMs could output interactions where there are in fact none, building on an existing predator-prey IPM. We show that interspecific density-dependence estimates are centered on zero when simulated to be zero, and therefore their estimation is unbiased. Their coverage probability, quantifying how many times credible intervals include zero, is also satisfactory. We further confirm that adding random temporal variation to multispecies density-dependent link functions does not alter these results. This study therefore reaffirms the potential of multispecies IPMs to infer correctly how biotic interactions influence demography, although future studies should investigate model misspecifications. https://peercommunityjournal.org/articles/10.24072/pcjournal.337/Integrated Population Model; data assimilation; species interactions; predation; density-dependence |
| spellingShingle | Paquet, Matthieu Barraquand, Frédéric Assessing species interactions using integrated predator-prey models Peer Community Journal Integrated Population Model; data assimilation; species interactions; predation; density-dependence |
| title | Assessing species interactions using integrated predator-prey models
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| title_full | Assessing species interactions using integrated predator-prey models
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| title_fullStr | Assessing species interactions using integrated predator-prey models
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| title_full_unstemmed | Assessing species interactions using integrated predator-prey models
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| title_short | Assessing species interactions using integrated predator-prey models
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| title_sort | assessing species interactions using integrated predator prey models |
| topic | Integrated Population Model; data assimilation; species interactions; predation; density-dependence |
| url | https://peercommunityjournal.org/articles/10.24072/pcjournal.337/ |
| work_keys_str_mv | AT paquetmatthieu assessingspeciesinteractionsusingintegratedpredatorpreymodels AT barraquandfrederic assessingspeciesinteractionsusingintegratedpredatorpreymodels |