Identifying conversion efficiency as a key ...
Document type :
Compte-rendu et recension critique d'ouvrage
DOI :
Title :
Identifying conversion efficiency as a key mechanism underlying food webs evolution : a step forward, or backward ?
Author(s) :
Fritsch, Coralie [Auteur]
Biology, genetics and statistics [BIGS]
Institut Élie Cartan de Lorraine [IECL]
Billiard, Sylvain [Auteur]
Évolution, Écologie et Paléontologie (Evo-Eco-Paleo) - UMR 8198 [Evo-Eco-Paléo (EEP)]
Champagnat, Nicolas [Auteur]
Biology, genetics and statistics [BIGS]
Institut Élie Cartan de Lorraine [IECL]
Biology, genetics and statistics [BIGS]
Institut Élie Cartan de Lorraine [IECL]
Billiard, Sylvain [Auteur]

Évolution, Écologie et Paléontologie (Evo-Eco-Paleo) - UMR 8198 [Evo-Eco-Paléo (EEP)]
Champagnat, Nicolas [Auteur]
Biology, genetics and statistics [BIGS]
Institut Élie Cartan de Lorraine [IECL]
Journal title :
Oikos
Pages :
904-930
Publisher :
Nordic Ecological Society
Publication date :
2021
ISSN :
0030-1299
English keyword(s) :
food webs models
trophic interactions
networks
community ecology
ecosystem
adaptive dynamics
biomass conversion efficiency
energy conversion efficiency
reproduction efficiency
trophic interactions
networks
community ecology
ecosystem
adaptive dynamics
biomass conversion efficiency
energy conversion efficiency
reproduction efficiency
HAL domain(s) :
Sciences de l'environnement/Biodiversité et Ecologie
Mathématiques [math]/Systèmes dynamiques [math.DS]
Mathématiques [math]/Systèmes dynamiques [math.DS]
English abstract : [en]
Body size or mass is one of the main factors underlying food webs structure. A large number of evolutionary models have shown that indeed, the adaptive evolution of body size (or mass) can give rise to hierarchically ...
Show more >Body size or mass is one of the main factors underlying food webs structure. A large number of evolutionary models have shown that indeed, the adaptive evolution of body size (or mass) can give rise to hierarchically organised trophic levels with complex between and within trophic interactions. However, these models generally make strong arbitrary assumptions on how traits evolve, casting doubts on their robustness. In particular, biomass conversion efficiency is always considered independent of the predator and prey size, which contradicts with the literature. In this paper, we propose a general model encompassing most previous models which allows to show that relaxing arbitrary assumptions gives rise to unrealistic food webs. We then show that considering biomass conversion efficiency dependent on species size is certainly key for food webs adaptive evolution because realistic food webs can evolve, making obsolete the need of arbitrary constraints on traits' evolution. We finally conclude that, on the one hand, ecologists should pay attention to how biomass flows into food webs in models. On the other hand, we question more generally the robustness of evolutionary models for the study of food webs.Show less >
Show more >Body size or mass is one of the main factors underlying food webs structure. A large number of evolutionary models have shown that indeed, the adaptive evolution of body size (or mass) can give rise to hierarchically organised trophic levels with complex between and within trophic interactions. However, these models generally make strong arbitrary assumptions on how traits evolve, casting doubts on their robustness. In particular, biomass conversion efficiency is always considered independent of the predator and prey size, which contradicts with the literature. In this paper, we propose a general model encompassing most previous models which allows to show that relaxing arbitrary assumptions gives rise to unrealistic food webs. We then show that considering biomass conversion efficiency dependent on species size is certainly key for food webs adaptive evolution because realistic food webs can evolve, making obsolete the need of arbitrary constraints on traits' evolution. We finally conclude that, on the one hand, ecologists should pay attention to how biomass flows into food webs in models. On the other hand, we question more generally the robustness of evolutionary models for the study of food webs.Show less >
Language :
Anglais
Popular science :
Non
Source :
Files
- https://hal.archives-ouvertes.fr/hal-02129313v3/document
- Open access
- Access the document
- https://hal.archives-ouvertes.fr/hal-02129313v3/file/cartoon-v2.pdf
- Open access
- Access the document
- https://hal.archives-ouvertes.fr/hal-02129313v3/file/fig1a_predation_rate_log_scale.pdf
- Open access
- Access the document
- https://hal.archives-ouvertes.fr/hal-02129313v3/file/fig1b_predation_rate.pdf
- Open access
- Access the document
- https://hal.archives-ouvertes.fr/hal-02129313v3/file/fig2_trait_z_bis_180705115856_branstrom.pdf
- Open access
- Access the document
- https://hal.archives-ouvertes.fr/hal-02129313v3/file/fig3_a1_fw_180705115450_BSC.pdf
- Open access
- Access the document
- https://hal.archives-ouvertes.fr/hal-02129313v3/file/fig3_a1_fw_tran_180705115450_BSC.pdf
- Open access
- Access the document
- https://hal.archives-ouvertes.fr/hal-02129313v3/file/fig3_a2_trait_z_bis_180705115450_BSC.pdf
- Open access
- Access the document
- https://hal.archives-ouvertes.fr/hal-02129313v3/file/fig3_a3_trait_mu_bis_180705115450_BSC.pdf
- Open access
- Access the document
- https://hal.archives-ouvertes.fr/hal-02129313v3/file/fig3_a4_fitness_180705115450_BSC.pdf
- Open access
- Access the document
- https://hal.archives-ouvertes.fr/hal-02129313v3/file/fig3_b1_fw_180705115344_BAC.pdf
- Open access
- Access the document
- https://hal.archives-ouvertes.fr/hal-02129313v3/file/fig3_b2_trait_z_bis_180705115344_BAC.pdf
- Open access
- Access the document
- https://hal.archives-ouvertes.fr/hal-02129313v3/file/fig3_b3_trait_mu_bis_180705115344_BAC.pdf
- Open access
- Access the document
- https://hal.archives-ouvertes.fr/hal-02129313v3/file/fig3_b4_fitness_180705115344_BAC.pdf
- Open access
- Access the document
- https://hal.archives-ouvertes.fr/hal-02129313v3/file/fig3_c1_fw_180829163504_BAC_1.pdf
- Open access
- Access the document
- https://hal.archives-ouvertes.fr/hal-02129313v3/file/fig3_c2_trait_z_bis_180829163504_BAC_1.pdf
- Open access
- Access the document
- https://hal.archives-ouvertes.fr/hal-02129313v3/file/fig3_c3_trait_mu_bis_180829163504_BAC_1.pdf
- Open access
- Access the document
- https://hal.archives-ouvertes.fr/hal-02129313v3/file/fig3_c4_fitness_180829163504_BAC_1.pdf
- Open access
- Access the document
- https://hal.archives-ouvertes.fr/hal-02129313v3/file/fig4a_xi.pdf
- Open access
- Access the document
- https://hal.archives-ouvertes.fr/hal-02129313v3/file/fig4_b_lambda.pdf
- Open access
- Access the document
- https://hal.archives-ouvertes.fr/hal-02129313v3/file/figure_13.pdf
- Open access
- Access the document
- https://hal.archives-ouvertes.fr/hal-02129313v3/file/figure_5.pdf
- Open access
- Access the document
- https://hal.archives-ouvertes.fr/hal-02129313v3/file/figure_6.pdf
- Open access
- Access the document
- https://hal.archives-ouvertes.fr/hal-02129313v3/file/figure_7.pdf
- Open access
- Access the document
- https://hal.archives-ouvertes.fr/hal-02129313v3/file/figure_8.pdf
- Open access
- Access the document
- https://hal.archives-ouvertes.fr/hal-02129313v3/file/figure_9.pdf
- Open access
- Access the document
- https://hal.archives-ouvertes.fr/hal-02129313v3/file/ODE_food_web_mass.pdf
- Open access
- Access the document
- http://arxiv.org/pdf/1905.06855
- Open access
- Access the document
- https://hal.archives-ouvertes.fr/hal-02129313v3/document
- Open access
- Access the document
- https://hal.archives-ouvertes.fr/hal-02129313v3/document
- Open access
- Access the document
- document
- Open access
- Access the document
- main_document.pdf
- Open access
- Access the document
- 1905.06855
- Open access
- Access the document