Geographical variation in the trait-based assembly patterns of multitrophic invertebrate communities

• Autores: Srivastava, Diane S.; MacDonald, A. Andrew M.; Pillar, Valério D.; Kratina, Pavel; Debastiani, Vanderlei J.; Guzman, Laura Melissa; Trzcinski, Mark Kurtis; Dézerald, Olivier; Barberis, Ignacio Martín; de Omena, Paula M.; Romero, Gustavo Q.; Ospina Bautista, Fabiola; Marino, Nicholas A. C.; Leroy, Céline; Farjalla, Vinicius F.; Richardson, Barbara A.; Gonçalves, Ana Z.; Corbara, Bruno; Petermann, Jana S.; Richardson, Michael J.; Melnychuk, Michael C.; Jocqué, Merlijn; Ngai, Jacqueline T.; Talaga, Stanislas; Piccoli, Gustavo C. O.; Montero, Guillermo Alberto; Kirby, Kathryn R.; Starzomski, Brian M.; Céréghino, Régis
• Año de publicación: 2022
• Idioma: inglés
• Tipo de recurso: artículo
• Materia: BROMELIAD INVERTEBRATES; FUNCTIONAL BIOGEOGRAPHY; HABITAT FILTERING; TRAIT-BASED ECOLOGY
• Institución: Consejo Nacional de Investigaciones Científicas y Técnicas

It has been argued that the mechanisms structuring ecological communities may be more generalizable when based on traits than on species identities. If so, patterns in the assembly of community-level traits along environmental gradients should be similar in different places in the world. Alternatively, geographical change in the species pool and regional variation in climate might result in site-specific relationships between community traits and local environments. These competing hypotheses are particularly untested for animal communities. Here we test the geographical constancy of trait-based assembly patterns using a widespread multi-trophic community: aquatic macroinvertebrates within bromeliads. We used data on 615 invertebrate taxa from 1,656 bromeliads in 26 field sites from Mexico to Argentina. We summarized invertebrate traits with four orthogonal axes, and used these trait axes to examine trait convergence and divergence assembly patterns along three environmental gradients: detrital biomass and water volume in bromeliads, and canopy cover over bromeliads. We found no overall signal of trait-based assembly patterns along any of the environmental gradients. However, individual sites did show trait convergence along detrital and water gradients, and we built predictive models to explore these site differences. Sites that showed trait convergence along detrital gradients were all north of the Northern Andes. This geographical pattern may be related to phylogeographical differences in bromeliad morphology. Bromeliads with low detritus were dominated by detritivorous collectors and filter feeders, where those with high detritus had more sclerotized and predatory invertebrates. Sites that showed the strongest trait convergence along gradients in bromeliad water were in regions with seasonal precipitation. In such sites, bromeliads with low water were dominated by soft-bodied, benthic invertebrates with simple life cycles. In less seasonal sites, traits associated with short-term desiccation resistance, such as hard exoskeletons, were more important. In summary, we show that there are strong geographical effects on the trait-based assembly patterns of this invertebrate community, driven by the biogeography of their foundational plant species as well as by regional climate. We suggest that inclusion of biogeography and climate in trait-based community ecology could help make it a truly general theory. Read the free Plain Language Summary for this article on the Journal blog.
Fil: Srivastava, Diane S.. University of British Columbia; Canadá
Fil: MacDonald, A. Andrew M.. Université Paul Sabatier; Francia
Fil: Pillar, Valério D.. Universidade Federal do Rio Grande; Brasil
Fil: Kratina, Pavel. University of London; Reino Unido
Fil: Debastiani, Vanderlei J.. Universidade Federal do Rio Grande; Brasil
Fil: Guzman, Laura Melissa. University of British Columbia; Canadá. University Fraser Simon; Canadá
Fil: Trzcinski, Mark Kurtis. University of British Columbia; Canadá
Fil: Dézerald, Olivier. No especifíca;
Fil: Barberis, Ignacio Martín. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Investigaciones en Ciencias Agrarias de Rosario. Universidad Nacional de Rosario. Facultad de Ciencias Agrarias. Instituto de Investigaciones en Ciencias Agrarias de Rosario; Argentina
Fil: de Omena, Paula M.. Universidade Federal do Pará; Brasil. Universidade Estadual de Campinas; Brasil
Fil: Romero, Gustavo Q.. Universidade Estadual de Campinas; Brasil
Fil: Ospina Bautista, Fabiola. Universidad de Caldas; Colombia
Fil: Marino, Nicholas A. C.. Universidade Federal do Rio de Janeiro; Brasil
Fil: Leroy, Céline. Université Montpellier II; Francia
Fil: Farjalla, Vinicius F.. Universidade Federal do Rio de Janeiro; Brasil
Fil: Richardson, Barbara A.. Universidad de Puerto Rico; Puerto Rico
Fil: Gonçalves, Ana Z.. Universidade de Sao Paulo; Brasil
Fil: Corbara, Bruno. No especifíca;
Fil: Petermann, Jana S.. Universitat Salzburg; Austria
Fil: Richardson, Michael J.. Universidad de Puerto Rico; Puerto Rico
Fil: Melnychuk, Michael C.. University of Washington; Estados Unidos
Fil: Jocqué, Merlijn. No especifíca;
Fil: Ngai, Jacqueline T.. University of British Columbia; Canadá
Fil: Talaga, Stanislas. Université Montpellier II; Francia
Fil: Piccoli, Gustavo C. O.. Universidade de Sao Paulo; Brasil
Fil: Montero, Guillermo Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Investigaciones en Ciencias Agrarias de Rosario. Universidad Nacional de Rosario. Facultad de Ciencias Agrarias. Instituto de Investigaciones en Ciencias Agrarias de Rosario; Argentina
Fil: Kirby, Kathryn R.. University of British Columbia; Canadá
Fil: Starzomski, Brian M.. University of Victoria; Canadá
Fil: Céréghino, Régis. Université Paul Sabatier; Francia