How the interaction network determines the herbivory effects on plant coexistence
Comunicación oral (TS.05-O-10) presentada en the 1st Meeting of the Iberian Ecological Society (SIBECOL) & XIV AEET meeting. Barcelona, Spain, 4th – 7th February 2019
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2019-02
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dig-irnas-es-10261-1761612019-02-16T01:58:12Z How the interaction network determines the herbivory effects on plant coexistence Granjel, R. R. Godoy, Óscar Badenhausser, Isabelle Gross, Nicolas Godoy, Óscar [0000-0003-4988-6626] Comunicación oral (TS.05-O-10) presentada en the 1st Meeting of the Iberian Ecological Society (SIBECOL) & XIV AEET meeting. Barcelona, Spain, 4th – 7th February 2019 Broadly, herbivores are thought to promote species coexistence through equalizing effects by reducing the competitive ability of he dominant plants, and thus, allowing subordinate species to persist in the community. However, whether herbivores could promote coexistence by increasing stabilizing effects between competitors is less clear. We hypothesized that the prevalence of stabilizing and equalizing effects might be highly dependent on the structure of the interaction network between plants and herbivores. To address this, we focused on a field experiment in a species-rich, calcareous permanent grassland, in which the functional diversity of a community of grasshoppers was manipulated and their impact on the plant community was monitored by changes in coverage for two years. We estimated conspecific and heterospecific competitive interactions between species plus apparent competitive effects of grasshoppers on pairwise plant interactions. With this information at hand, we used recent tools from coexistence theory to estimate the determinants of competitive outcomes in multiple species assemblages (i.e. structural niche and fitness differences), which were then related to three key characteristics of the plant-grasshopper network (i.e. nestedness, strength of the links, and grasshopper abundances). Our results indicate that grasshoppers can either promote or limit plant diversity, and their contrasting effects can be mechanistically understood by how the structure of the plant-herbivore network drives both changes in stabilizing and equalizing effects between subordinate and dominant plant species. No 2019-02-15T08:18:04Z 2019-02-15T08:18:04Z 2019-02 comunicación de congreso http://purl.org/coar/resource_type/c_5794 Abstract book of the 1st Meeting of the Iberian Ecological Society (SIBECOL) & XIV AEET meeting, pág. 158: TS.05-O-10 (2019) http://hdl.handle.net/10261/176161 en Sí none |
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biblioteca |
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Biblioteca del IRNAS España |
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English |
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Comunicación oral (TS.05-O-10) presentada en the 1st Meeting of the Iberian Ecological Society (SIBECOL) & XIV AEET meeting. Barcelona, Spain, 4th – 7th February 2019 |
| author2 |
Godoy, Óscar [0000-0003-4988-6626] |
| author_facet |
Godoy, Óscar [0000-0003-4988-6626] Granjel, R. R. Godoy, Óscar Badenhausser, Isabelle Gross, Nicolas |
| format |
comunicación de congreso |
| author |
Granjel, R. R. Godoy, Óscar Badenhausser, Isabelle Gross, Nicolas |
| spellingShingle |
Granjel, R. R. Godoy, Óscar Badenhausser, Isabelle Gross, Nicolas How the interaction network determines the herbivory effects on plant coexistence |
| author_sort |
Granjel, R. R. |
| title |
How the interaction network determines the herbivory effects on plant coexistence |
| title_short |
How the interaction network determines the herbivory effects on plant coexistence |
| title_full |
How the interaction network determines the herbivory effects on plant coexistence |
| title_fullStr |
How the interaction network determines the herbivory effects on plant coexistence |
| title_full_unstemmed |
How the interaction network determines the herbivory effects on plant coexistence |
| title_sort |
how the interaction network determines the herbivory effects on plant coexistence |
| publishDate |
2019-02 |
| url |
http://hdl.handle.net/10261/176161 |
| work_keys_str_mv |
AT granjelrr howtheinteractionnetworkdeterminestheherbivoryeffectsonplantcoexistence AT godoyoscar howtheinteractionnetworkdeterminestheherbivoryeffectsonplantcoexistence AT badenhausserisabelle howtheinteractionnetworkdeterminestheherbivoryeffectsonplantcoexistence AT grossnicolas howtheinteractionnetworkdeterminestheherbivoryeffectsonplantcoexistence |
| _version_ |
1777665007708798976 |