Category of Work
Article
Publication Title
Theoretical Population Biology
Abstract
Indirect effects, both density- and trait-mediated, have been known to act in tandem with direct effects in the interactions of numerous species. They have been shown to affect populations embedded in competitive and mutualistic networks alike. In this work, we introduce a four-dimensional system of ordinary differential equations and investigate the interplay between direct density-effects and density- and trait-mediated indirect effects that take place in a yeast parasite–zooplankton host–incompetent competitor system embedded in a food web which also includes resources and predators. Among our main findings is the demonstration that indirect effects cause qualitative and quantitative changes almost indistinguishable from direct effects and the corroboration through our analysis of the fact that the effects of direct and indirect mechanisms cannot be disentangled. Our results underpin the conclusions of past studies calling for comprehensive models that incorporate both direct and indirect effects to better describe field data.
First Page
132
Last Page
142
DOI
https://doi.org/10.1016/j.tpb.2019.07.009
Publication Date
7-15-2019
Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial-No Derivative Works 4.0 International License.
Recommended Citation
Rapti, Zoi; Stewart Merrill, Tara E.; Mueller-Brennan, Liam E.; Kavouras, Jerry H.; and Cáceres, Carla E., "Indirect effects in a planktonic disease system" (2019). Biology Department Articles. 5.
https://digitalcommons.lewisu.edu/biology_facpubs/5
Comments
Version of Record available in Theoretical Population Biology 130, July 15, 2019, published by Elsevier https://doi.org/10.1016/j.tpb.2019.07.009.