Please use this identifier to cite or link to this item:
Title: Spatial distance and climate determine modularity in a cross-biomes plant–hummingbird interaction network in Brazil
Authors: Araujo, Andréa Cardoso de
Martín González, Ana M.
Sandel, Brody S.
Maruyama, Pietro Kiyoshi
Fischer, Erich
Vizentin-Bugoni, Jeferson
Araújo, Francielle Paulina de
Coelho, Aline Góes
Faria, R. R.
Kohler, Glauco
Las-Casas, Flor Maria Guedes
Lopes, Ariadna Valentina
Machado, Adriana Oliveira
Machado, Caio Graco
Machado, I. C.
McGuire, Jimmy A.
Moura, Alan Cerqueira
Oliveira, Genilda M.
Oliveira, Paulo E.
Rocca, Márcia Alexandra
Rodrigues, Licléia da Cruz
Rodrigues, Marcos
Rui, Ana Maria
Sazima, Ivan
Sazima, Marlies And I.
Varassin, Isabela Galarda
Wang, Zhiheng
Dalsgaard, Bo
Svenning, Jens Christian
Keywords: Biogeography
Climate Change
Ecological Modeling
Life History Trait
Range Size
Spatial Analysis
Issue Date: 2018
metadata.dc.publisher.journal: Journal of Biogeography
metadata.dc.relation.ispartof: Volume 45, Número 8, Pags. 1846-1858
Abstract: Aim: We examined the effects of space, climate, phylogeny and species traits on module composition in a cross-biomes plant–hummingbird network. Location: Brazil, except Amazonian region. Methods: We compiled 31 local binary plant–hummingbird networks, combining them into one cross-biomes metanetwork. We conducted a modularity analysis and tested the relationship between species’ module membership with traits, geographical location, climatic conditions and range sizes, employing random forest models. We fitted reduced models containing groups of related variables (climatic, spatial, phylogenetic, traits) and combinations of groups to partition the variance explained by these sets into unique and shared components. Results: The Brazilian cross-biomes network was composed of 479 plant and 42 hummingbird species, and showed significant modularity. The resulting six modules conformed well to vegetation domains. Only plant traits, not hummingbird traits, differed between modules, notably plants’ growth form, corolla length, flower shape and colour. Some modules included plant species with very restricted distributions, whereas others encompassed more widespread ones. Widespread hummingbirds were the most connected, both within and between modules, whereas widespread plants were the most connected between modules. Among traits, only nectar concentration had a weak effect on among-module connectivity. Main conclusions: Climate and spatial filters were the main determinants of module composition for hummingbirds and plants, potentially related to resource seasonality, especially for hummingbirds. Historical dispersal-linked contingency, or environmental variations not accounted for by the explanatory factors here evaluated, could also contribute to the spatial component. Phylogeny and morphological traits had no unique effects on the assignment of species to modules. Widespread species showed higher within- and/or among-module connectivity, indicating their key role connecting biomes, and, in the case of hummingbirds, communities within biomes. Our results indicate that biogeography and climate not only determine the variation of modularity in local plant–animal networks, as previously shown, but also affect the cross-biomes network structure. © 2018 John Wiley & Sons Ltd
metadata.dc.identifier.doi: 10.1111/jbi.13367
Appears in Collections:Artigos

Files in This Item:
There are no files associated with this item.

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.