scholarly journals Stable coexistence in plant-pollinator-herbivore communities requires balanced mutualistic vs antagonistic interactions

2022 ◽  
Vol 465 ◽  
pp. 109857
Author(s):  
Youssef Yacine ◽  
Nicolas Loeuille
Keyword(s):  
Stable Coexistence ◽  
Plant Pollinator ◽  
Herbivore Communities ◽  
Antagonistic Interactions

scholarly journals Stable coexistence in plant-pollinator-herbivore communities requires balanced mutualistic vs antagonistic interactions

2021 ◽  
Author(s):  
Youssef Yacine ◽  
Nicolas Loeuille
Keyword(s):  
Emergent Property ◽  
Empirical Literature ◽  
Ecological Communities ◽  
Trade Off ◽  
Stable Coexistence ◽  
Multiple Species ◽  
Plant Pollinator ◽  
Herbivore Communities ◽  
Antagonistic Interactions

Ecological communities consist of multiple species interacting in diverse ways. Understanding the mechanisms supporting coexistence requires accounting for such a diversity. Because most works focus either on mutualism or predation, how pollination and herbivory interactively determine the stable coexistence in plant-pollinator-herbivore communities is still poorly understood. Studying the typical three-species module of such communities, we determine the conditions allowing stable coexistence then investigate how its maintenance constrains the relative interaction strengths. Our results show that coexistence is possible if pollination is sufficiently strong relative to herbivory, while its stability is possible if herbivory is sufficiently strong relative to pollination. A balance between pollination and herbivory is therefore required. Interestingly, shared preferences for plant phenotypes, that would favor such balance, have been frequently reported in the empirical literature. The identified ecological trade-off between attracting pollinators and deterring herbivores therefore also appears as an emergent property of stable plant-pollinator-herbivore communities.

scholarly journals Molecular mechanisms of mutualistic and antagonistic interactions in a plant–pollinator association

2021 ◽  
Author(s):  
Rong Wang ◽  
Yang Yang ◽  
Yi Jing ◽  
Simon T. Segar ◽  
Yu Zhang ◽  
...  
Keyword(s):  
Molecular Mechanisms ◽  
Plant Pollinator ◽  
Antagonistic Interactions

Sensitivity of plant–pollinator–herbivore communities to changes in phenology

2010 ◽  
Vol 221 (3) ◽  
pp. 453-458 ◽  
Author(s):  
Nicholas S. Fabina ◽  
Karen C. Abbott ◽  
R.Tucker Gilman
Keyword(s):  
Plant Pollinator ◽  
Herbivore Communities

scholarly journals Not all interactions are positive: testing how antagonistic interactions impact the robustness of plant-pollinator networks

2019 ◽  
Author(s):  
Heather M. Briggs ◽  
Carolyn A. Ayers ◽  
Paul R. Armsworth ◽  
Berry J. Brosi
Keyword(s):  
Plant Species ◽  
Ecological Systems ◽  
Network Robustness ◽  
Floral Resources ◽  
Nectar Robbing ◽  
Full Spectrum ◽  
Pollinator Species ◽  
Plant Pollinator ◽  
Topological Robustness ◽  
Antagonistic Interactions

AbstractGiven ongoing pollinator declines, it is important to understand the dynamics of linked extinctions of plants driven by pollinator extinctions. Topological robustness models focused on this question suggest relatively high robustness of plant species to pollinator species extinctions. Still, existing robustness models typically assume that all interactions in plant-pollinator networks are positive, which is clearly not always the case. For example, many pollinators remove floral resources with-out transferring pollen, or even damage floral structures in the case of nectar robbing. Here we introduce antagonistic interactions into plant-pollinator networks and assess the resilience of plant communities to pollinator species losses. Incorporating antagonistic interactions leads to lower network robustness, i.e. an increased rate of plant species loss (as compared to networks with only mutualistic interactions) in empirical plant-pollinator networks. In conjunction with extinction order, the addition of increasingly antagonistic interactions was idiosyncratic in that it did not always magnify the effects of extinction order across the three networks. These results underscore the importance of considering the full spectrum of interaction outcomes when assessing robustness to coextinctions in plant-pollinator networks, as well as other ecological systems.

scholarly journals Testing how antagonistic interactions impact the robustness of plant-pollinator networks

2019 ◽  
Vol 25 ◽  
Author(s):  
Heather Briggs ◽  
Carolyn A. Ayers ◽  
Paul R. Armsworth ◽  
Berry J. Brosi
Keyword(s):  
Plant Species ◽  
Ecological Systems ◽  
Network Robustness ◽  
Floral Resources ◽  
Nectar Robbing ◽  
Full Spectrum ◽  
Pollinator Species ◽  
Plant Pollinator ◽  
Topological Robustness ◽  
Antagonistic Interactions

Given ongoing pollinator declines, it is important to understand the dynamics of linked extinctions of plants driven by pollinator extinctions. Topological robustness models focused on this question suggest relatively high robustness of plant species to pollinator species extinctions. Still, existing robustness models typically assume that all interactions in plant-pollinator networks are positive, which is clearly not always the case. For example, many pollinators remove floral resources without transferring pollen, or even damage floral structures in the case of nectar robbing. Here we introduce antagonistic interactions into plant-pollinator networks and assess the resilience of plant communities to pollinator species losses. Incorporating antagonistic interactions leads to lower network robustness, i.e. an increased rate of plant species loss (as compared to networks with only mutualistic interactions) in empirical plant-pollinator networks. In conjunction with extinction order, the addition of increasingly antagonistic interactions was idiosyncratic in that it did not always magnify the effects of extinction order across the three networks. These results underscore the importance of considering the full spectrum of interaction outcomes when assessing robustness to coextinctions in plant-pollinator networks, as well as other ecological systems.

scholarly journals Variation in insect herbivore communities on individual plants reveals phylogenetic signal in uncertainty of attack in Brassicaceae

2020 ◽  
Author(s):  
Daan Mertens ◽  
Klaas Bouwmeester ◽  
Erik H. Poelman
Keyword(s):  
Plant Species ◽  
Phylogenetic Signal ◽  
Plant Defence ◽  
Insect Herbivore ◽  
Plant Defences ◽  
Herbivore Species ◽  
Phylogenetic Lineages ◽  
Defence Strategies ◽  
Herbivore Communities ◽  
Antagonistic Interactions

AbstractAs a result of co-evolution between plants and herbivores, related plants often interact with similar communities of herbivores. On individual plants, typically only a subset of interactions is realized. The stochasticity of realized interactions leads to uncertainty of attack on individual plants and is likely to determine adaptiveness of plant defence strategies. Here, we show that across 12 plant species in two phylogenetic lineages of the Brassicaceae, variation in realized herbivore communities reveals a phylogenetic signal in the uncertainty of attack on individual plants. Individual plants of Brassicaceae Lineage II were attacked by a larger number of herbivore species from a larger species pool, resulting in a higher uncertainty of realized antagonistic interactions compared to plants in Lineage I. We argue that uncertainty of attack in terms of realized interactions on individual plants is ecologically relevant and must therefore be considered in the evolution of plant defences.

Usurpation of plant-pollinator mutualisms by non-native ants

2016 ◽  
Author(s):  
David A. Holway
Keyword(s):  
Plant Pollinator
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