Data from: Abundance drives broad patterns of generalisation in plant-hummingbird pollination networksBenno I. Simmons, Jeferson Vizentin-Bugoni, Pietro K. Maruyama, Peter A. Cotton, Oscar H. Marín-Gómez, Carlos Lara, Liliana Rosero-Lasprilla, María A Maglianesi, Raúl Ortiz-Pulido, Márcia A. Rocca, Licléia C. Rodrigues, Boris Tinocco, Marcelo F. Vasconcelos, Marlies Sazima, Ana M. Martín González, Jesper Sonne, Carsten Rahbek, Lynn V. Dicks, Bo Dalsgaard & William J. Sutherland
Abundant pollinators are often more generalised than rare pollinators. This could be because abundant species have more chance encounters with potential interaction partners. On the other hand, generalised species could have a competitive advantage over specialists, leading to higher abundance. Determining the direction of the abundance-generalisation relationship is therefore a ‘chicken-and-egg’ dilemma. Here we determine the direction of the relationship between abundance and generalisation in plant-hummingbird pollination networks across the Americas. We find evidence that...
Data from: Beta diversity of aquatic invertebrates increases along an altitudinal gradient in a Neotropical mountainDiego M.P. Castro, Marcos Callisto, Ricardo R. C. Solar, Diego R. Macedo & G. Wilson Fernandes.
Mountains harbor rich biodiversity and high levels of endemism, particularly due to changes in environmental conditions over short spatial distances, which affects species distribution and composition. Studies on mountain ecosystems are increasingly needed, as mountains are highly threatened despite providing ecosystem services, such as water supply for half of the human population. We aimed to understand the patterns and drivers of alpha and beta diversities of aquatic invertebrates in headwater streams along an altitudinal gradient...
Wallace’s (1854) Riverine Barrier hypothesis is one of the earliest explanations for Amazon biotic diversification. Despite the importance of this hypothesis for explaining speciation in some animal groups, it has not been studied extensively for plant species. In this study we use a prominent Amazon tree, Buchenavia oxycarpa (Mart.) Eichler (Combretaceae), to evaluate Wallace’s hypothesis along the Rio Negro, a major Amazon tributary that has driven allopatric speciation for several animal taxa. We sampled six...
Opposite latitudinal patterns for bird and arthropod predation revealed in the experiments with differently colored artificial preyElena Zvereva, Bastien Castagneyrol, Tatiana Cornelissen, Anders Forsman, Juan Antonio Hernández-Agüero, Tero Klemola, Lucas Paolucci, Vicente Polo, Norma Salinas, K. Jurie Theron, Guorui Xu, Vitali Zverev & Mikhail Kozlov
The strength of biotic interactions is generally thought to increase towards the equator, but support for this hypothesis is contradictory. We explored whether predator attacks on artificial prey of eight different colours vary among climates and whether this variation affects the detection of latitudinal patterns in predation. The data set provides number of damage marks on each of 1320 plasticine caterpillars of eight different colours, which were attached to branches of woody plants and exposed...
Data from: Human activities influence the occupancy probability of mammalian carnivores in the Brazilian CaatingaDouglas De Matos Dias, Rodrigo Lima Massara, Claudia Bueno De Campos & Flávio Henrique Guimarães Rodrigues.
The Caatinga is a semi-arid domain, characterized by reduced humidity and high rates of anthropogenic impact. In addition to the low availability of water, carnivorous mammals are still exposed to a number of threats related to landscape modifications. We used data from camera traps and occupancy models to investigate the habitat use by carnivores in an area of Caatinga in northeastern Brazil. We found a negative correlation between the presence of wind farms and the...
Evaluating the boundaries of marine biogeographic regions of the Southwestern Atlantic using halacarid mites (Halacaridae), meiobenthic organisms with a low dispersal potentialAlmir Pepato, Pavel Klimov & Teofânia Vidigal
Aim We evaluated traditional biogeographic boundaries of coastal marine regions in SW Atlantic using DNA sequence data from common, rocky-shore inhabiting, marine mites of the genera Agauopsis and Rhombognathus, family Halacaridae. Methods We investigated geographic population genetic structure using CO1 gene sequences, estimated divergence times using a multigene dataset and absolute time-calibrated molecular clock analyses, and performed environmental niche modeling (ENM) of common marine mite species. Results Agauopsis legionium has a shallow history (2.01 Ma)...
Variation in community structure of gall-inducing insects associated with a tropical plant supports the hypothesis of competition in stressful habitatsLetícia Fernanda Ramos, Ricardo Ribeiro De Castro Solar, Henrique Santos & Marcilio Fagundes
Environmental factors act as drivers of species coexistence or competition. Mesic environments favor the action of parasites and predators on gall communities, while the factors that determine the structure of gall communities in xeric environments remain unknown. We evaluated the structure of gall communities along an environmental gradient defined by intrinsic plant characteristics, soil fertility and aridity, and investigated the role of competition as a structuring force of gall communities in xeric environments. We created...
A new Habenaria species from the state of Mato Grosso is described and illustrated. Habenaria gracilisegmenta was discovered in campinarana sub-forest, in northern Mato Grosso state, on the southern edge of the Brazilian Amazon. The species is distinguished by its slender habit, few, delicate flowers, and very long, thin lateral segments of the petals and lip, and its morphological affinity with other Neotropical species is unclear. A molecular phylogenetic analysis revealed that the new species...
Global patterns of species and evolutionary diversity in plants are primarily determined by a temperature gradient, but precipitation gradients may be more important within the tropics, where plant species richness is positively associated with the amount of rainfall. The impact of precipitation on the distribution of evolutionary diversity, however, is largely unexplored. Here we detail how evolutionary diversity varies along precipitation gradients by bringing together a comprehensive database on the composition of angiosperm tree communities...
Data from: Early plant development depends on embryo damage location: the role of seed size in partial seed predationRamón Perea García-Calvo, Geraldo Fernandes & Rodolfo Dirzo
Data on 1) Observed weevil-infested acorns in the field; 2) Germination rates and times, and seedling emergence of control and embryo-damaged acorns; 3) Seedling performance and physiology of seedlings
Universidade Federal de Minas Gerais10
Pontifical Catholic University of Peru1
University of Michigan–Ann Arbor1
State University of Norte Fluminense1
Royal Botanic Gardens1
Museu Paraense Emílio Goeldi1
University of Cambridge1