Phylogeny, biogeography, and morphological evolution among and within the Neotropical and Asian clades of Schefflera (Araliaceae)Gregory Plunkett, Porter Lowry, Pedro Fiaschi, David Frodin & Antoine Nicolas
Schefflera is the largest and most complex genus of Araliaceae, with ~600 described species (and many additional species awaiting formal description), but recent studies indicate that it is polyphyletic, forming five geographically centered clades spread across the major lineages of the family. Significant progress has been made in revising the three smallest clades, but the two largest groups, centered in Asia and the Neotropics, remain poorly understood. To advance our knowledge of these groups, a...
A blueprint for securing Brazil's marine biodiversity and supporting the achievement of global conservation goalsRafael A. Magris, Micheli D. P. Costa, Carlos E. L. Ferreira, Ciro C. Vilar, Jean-Christophe Joyeux, Joel C. Creed, Margareth S. Copertino, Paulo Horta, Paulo Y. G. Sumida, Ronaldo Francini-Filho & Sergio R. Floeter
Aim: As a step towards providing support for an ecological approach to strengthening marine protected areas (MPAs) and meeting international commitments, this study combines cumulative impact assessment and conservation planning approach to undertake a large-scale spatial prioritisation. Location: Exclusive Economic Zone (EEZ) of Brazil, Southwest Atlantic Ocean Methods: We developed a prioritisation approach to protecting different habitat types, threatened species ranges, and ecological connectivity, while also mitigating the impacts of multiple threats on biodiversity. When...
Going against the flow: barriers to gene flow impact patterns of connectivity in cryptic coral reef gobies throughout the western AtlanticDaniel Volk, John Konvalina, Eric Hoffman, Sergio Floeter & Carlos E. L. Ferreira
Aim: Complex oceanographic features have historically caused difficulty in understanding gene flow in marine taxa. Here, we evaluate the impact of potential phylogeographic barriers to gene flow and assess demography and evolutionary history of a coral reef goby species complex. Specifically, we test how the Amazon River outflow and ocean currents impact gene flow. Location: Western Atlantic. Taxon: The bridled goby (Coryphopterus glaucofraenum) and sand-canyon goby (C. venezuelae) species complex. Methods: We used mitochondrial DNA...
1. Tropical savannas are known for the fire-prone ecosystems, yet, riparian evergreen forests are another important landscape feature. These forests usually remain safe from wildfires in the wet riparian zones. With global changes, large wildfires are now more frequent in savanna landscapes, exposing riparian forests to unprecedented impact. 2. In 2017, a large wildfire spread across the Chapada dos Veadeiros National Park, an iconic UNESCO site in central Brazil, raising concerns about its impact on...
Host diversity outperforms climate as a global driver of symbiont diversity in the bird-feather mite systemReginaldo Gusmão, Fabio Hernandes, Mauricio Vancine, Luciano Naka, Jorge Doña & Thiago Gonçalves-Souza
Aim: The simultaneous influence of abiotic and biotic factors as main drivers of global species distributions remains poorly understood, especially in host-dependent groups. In this study, we diverge from traditional macroecological approaches by considering both biotic (avian species diversity) and abiotic (climatic) factors in determining the global distribution pattern of feather mite species richness, one of the most abundant and diverse bird ectosymbionts. Location: Global. Methods: We used a global dataset of feather mite-bird interactions...
A New Species of Monrosia (Polygalaceae) from Argentina, and Revision of this Genus Endemic to the Southern AndesAgustina Martinez, Juan Manuel Acosta, Michelle Mota & Jose Floriano Barea Pastore
The recently resurrected monotypic genus Monrosia (Polygalaceae) is endemic to the Argentinian provinces of Catamarca to San Juan in the southern Andes. We here describe and illustrate Monrosia sanjuanensis, a new species endemic to the Province of San Juan and the second species of the genus, and revise the genus. Monrosia and its two species are described and analysed in a phylogenetic context, using nuclear and chloroplast DNA sequences. A distribution map, illustration, photos of...
Understanding the interplay between processes operating at large and small spatiotemporal scales in shaping biotic interactions within biological communities remains challenging. Recent studies illustrate how phenotypic specialization, species life-history traits and/or resource partitioning recurrently underlie the structure of mutualistic interactions in terrestrial ecosystems along large latitudinal gradients of biodiversity. However, we know considerably less about how local processes interact with large-scale patterns of biodiversity in modulating biotic interactions in the marine realm. Considering agonistic behaviour...
1. Turbidity plays an important role in aquatic predator-prey interactions. Increases in turbidity are expected to reduce prey capture rates, especially for visually oriented predators. However, there is also evidence indicating that turbidity may have little or no effect on predation rates. 2. Here, we conducted a systematic review and meta-analysis of the relationship between turbidity and capture rate. We explored possible sources of heterogeneity in the effect sizes (capture strategy, predator’s body size, relative...
Fast diversification through a mosaic of evolutionary histories characterizes the endemic flora of ancient Neotropical mountainsThais Vasconcelos, Suzana Alcantara, Caroline Andrino, Félix Forest, Marcelo Reginato, Marcelo Simon & José Pirani
Mountains are among the most biodiverse areas on the globe. In young mountain ranges, exceptional plant species-richness is often associated to recent and rapid radiations linked to the mountain uplift itself. In ancient mountains, however, orogeny vastly precedes the evolution of vascular plants, so species-richness has been explained by species accumulation during long periods of low extinction rates. Here we evaluate these assumptions by analyzing plant diversification dynamicsin thecampo rupestre, an ecosystem associated to pre-Cambrian...
Aim: The ‘abundant center’ hypothesis states that species are more abundant at the center of their range. However, several recent large-scale studies have failed to find evidence for such a pattern. Here we use extensive global data of reef fishes to test the strength of the 'abundant center' pattern, and to examine variation in the patterns across species using life history and ecological traits. Location: Marine habitat at a global extent: from Indo-Pacific to Atlantic...
Universidade Federal de Santa Catarina10
Fluminense Federal University3
University of Sao Paulo3
Royal Botanic Gardens2
Instituto Chico Mendes de Conservação da Biodiversidade2
Universidade Federal de Goiás1
University of La Réunion1
Rio de Janeiro State University1
Universidade Federal de Santa Maria1