Data from: Barriers, rather than refugia, underlie the origin of diversity in toads endemic to the Brazilian Atlantic ForestMaria Tereza C. Thomé, Kelly R. Zamudio, Célio F. B. Haddad & João Alexandrino
In this study, we investigated the relative contribution of geographic barriers and Pleistocene refuges in the diversification of the Rhinella crucifer species complex, a group of endemic toads with a widespread distribution in the Brazilian Atlantic Forest (AF). We used intensive sampling and multilocus DNA sequence data to compare nucleotide diversity between refuge and nonrefuge areas, investigate regional demographic patterns, estimate demographic parameters related to genetic breaks and test refuge versus barrier scenarios of diversification...
The ‘dilution effect’ (DE) hypothesis predicts that diverse host communities will show reduced disease. The underlying causes of pathogen dilution are complex, because they involve non-additive (driven by host interactions and differential habitat use) and additive (controlled by host species composition) mechanisms. Here, we used measures of complementarity and selection traditionally employed in the field of biodiversity–ecosystem function (BEF) to quantify the net effect of host diversity on disease dynamics of the amphibian-killing fungus Batrachochytrium...
Data from: Body size and allometric shape variation in the molly Poecilia vivipara along a gradient of salinity and predationMarcio S Araujo, S Ivan Perez, Maria Julia C Magazoni & Ana Cristina Petry
Background: Phenotypic diversity among populations may result from divergent natural selection acting directly on traits or via correlated responses to changes in other traits. One of the most frequent patterns of correlated response is the proportional change in the dimensions of anatomical traits associated with changes in growth or absolute size, known as allometry. Livebearing fishes subject to predation gradients have been shown to repeatedly evolve larger caudal peduncles and smaller cranial regions under high...
Data from: Partitioning the relative contribution of one-phase and two-phase seed dispersal when evaluating seed dispersal effectivenessLaurence Culot, Marie-Claude Huynen & Eckhard W. Heymann
Seed dispersal effectiveness (SDE) is a conceptual framework that aims at quantifying the contribution of seed dispersal vectors to plant fitness. While it is well recognized that diplochorous dispersal systems, characterized by two successive dispersal steps performed by two different vectors (Phase I = primary seed dispersal and Phase II = secondary seed dispersal) are common in temperate and tropical regions, little attention has been given to distinguishing the relative contribution of one-phase and two-phase...
Data from: Geographical variation in mutualistic networks: similarity, turnover and partner fidelityKristian Trøjelsgaard, Pedro Jordano, Daniel W. Carstensen, Jens M. Olesen & K. Trojelsgaard
Although species and their interactions in unison represent biodiversity and all the ecological and evolutionary processes associated with life, biotic interactions have, contrary to species, rarely been integrated into the concepts of spatial β-diversity. Here, we examine β-diversity of ecological networks by using pollination networks sampled across the Canary Islands. We show that adjacent and distant communities are more and less similar, respectively, in their composition of plants, pollinators and interactions than expected from random...
Data from: Systematic and historical biogeography of the Bryconidae (Ostariophysi: Characiformes) suggesting a new rearrangement of its genera and an old origin of Mesoamerican ichthyofaunaKelly T. Abe, Tatiane C. Mariguela, Gleisy S. Avelino, Fausto Foresti & Claudio Oliveira
Recent molecular hypotheses suggest that some traditional suprageneric taxa of Characiformes require revision, as they may not constitute monophyletic groups. This is the case for the Bryconidae. Various studies have proposed that this family (considered a subfamily by some authors) may be composed of different genera. However, until now, no phylogenetic study of all putative genera has been conducted. In the present study, we analyzed 27 species (46 specimens) of all currently recognized genera of...
Sao Paulo State University6
Estación Biológica de Doñana1
University of Liège1
German Primate Center1
Federal University of Sao Paulo1
Federal University of Rio de Janeiro1
National Scientific and Technical Research Council1
State University of Campinas1