13 Works

Spatial heterogeneity and habitat configuration overcome habitat composition influences on alpha and beta mammal diversity

André Luis Regolin, Milton Cezar Ribeiro, Felipe Martello, Geruza Leal Melo, Jonas Sponchiado, Luis Fernando De Castro Campanha, Larissa Sayuri Moreira Sugai, Thiago Sanna Freire Silva & Nilton Carlos Cáceres
The effects of habitat fragmentation on different taxa and ecosystems are subject to intense debate, and disentangling them is of utmost importance to support conservation and management strategies. We evaluated the importance of landscape composition and configuration, and spatial heterogeneity to explain α- and β-diversity of mammals across a gradient of percent woody cover and land use diversity. We expected species richness to be positively related to all predictive variables, with the strongest relationship with...

Rethinking megafauna

Marcos Moleón, José Sánchez-Zapata, José Donázar, Eloy Revilla, Berta Martín-López, Cayetano Gutiérrez-Cánovas, Wayne Getz, Zebensui Morales-Reyes, Ahimsa Campos-Arceiz, Larry Crowder, Mauro Galetti, Manuela González-Suárez, Fengzhi He, Pedro Jordano, Rebecca Lewison, Robin Naidoo, Norman Owen-Smith, Nuria Selva, Jens-Christian Svenning, José Tella, Christiane Zarfl, Sonja Jähnig, Matt Hayward, Søren Faurby, Nuria García … & Klement Tochner
Concern for megafauna is increasing among scientists and non-scientists. Many studies have emphasized that megafauna play prominent ecological roles and provide important ecosystem services to humanity. But, what precisely are “megafauna”? Here we critically assess the concept of megafauna and propose a goal-oriented framework for megafaunal research. First, we review definitions of megafauna and analyze associated terminology in the scientific literature. Second, we conduct a survey among ecologists and paleontologists to assess the species traits...

Frugivory underpins the nitrogen cycle

Nacho Villar, Claudia Paz, Valesca Zipparro, Sergio Nazareth, Leticia Bulascoschi, Elisabeth Bakker & Mauro Galetti
1. Tropical rainforests are populated by large frugivores that feed upon fruit-producing woody species, yet their role in regulating the cycle of globally important biogeochemical elements such as nitrogen is still unknown. This is particularly relevant because tropical forests play a prominent role in the nitrogen cycle and are becoming rapidly defaunated. Furthermore, frugivory is not considered in current plant-large herbivore-nutrient cycling frameworks exclusively focused on grazers and browsers. 2. Here we used a long-term...

Morphological and molecular characterization of tropical Meloidogyne species in Brazil

Vanessa Rafaela De Carvalho, Julio Cesar Antunes Ferreira, Daniel Dalvan Do Nascimento, Pedro Luiz Martins Soares, José Cola Zanuncio, Bárbara Monteiro De Castro Castro & Silvia Renata Siciliano Wilcken
The identification of Meloidogyne species, based on the perineal pattern of females and the morphology of the anterior portion of males, requires knowledge of the characteristics of each species and, mainly, training and practice. Molecular techniques, applying the concept of integrative taxonomy, have validated the diagnosis of plant-parasitic nematodes through DNA analysis. The objective of the present study was to evaluate the accuracy and feasibility of molecular techniques to identify and discriminate Meloidogyne species that...

Impact of intercept trap type on plume structure: a potential mechanism for differential performance of intercept trap designs for Monochamus species

Marc C. Bouwer, Chris J. K. MacQuarrie, Oniel J. Aguirre-Gil, Bernard Slippers & Jeremy D. Allison
Studies have demonstrated that semiochemical-baited intercept traps differ in their performance for sampling insects, but we have an incomplete understanding of how and why intercept trap design effects vary among insects. This can significantly delay both the development of new and optimization of existing survey and detection tools. The development of a mechanistic understanding of why trap performance varies within and among species would mitigate this delay. The primary objective of this study was to...

Landscape heterogeneity shapes bird phylogenetic responses at forest-matrix interfaces in Atlantic Forest, Brazil

Bruno Adorno, Fabio M. Barros, Milton Cezar Ribeiro, Vinicius X. Da Silva & Erica Hasui
Agricultural intensification is one of the major factors driving biodiversity loss. However, most studies in human-dominated landscapes have used taxonomic diversity in their analysis, ignoring evolutionary relationships. Consequently, the relationship between landscape structure and phylogenetic diversity is not well understood. Here, we tested the hypothesis that landscape heterogeneity is positively related to bird phylogenetic indexes of diversity and structure, leading to over-dispersed phylogenies in very heterogeneous landscapes. We analyzed phylogenetic responses in interfaces between forest...

Data from: Topography, more than land cover, explains genetic diversity in a Neotropical savanna treefrog

Renato C. Nali, C. Guilherme Becker, Kelly R. Zamudio & Cynthia P. A. Prado
Aim: Effective conservation policies rely on information about population genetic structure and the connectivity of remnants of suitable habitat. The interaction between natural and anthropogenic discontinuities across landscapes can uncover the relative contributions of different barriers to gene flow, with direct consequences for decision-making in conservation. Therefore, we aimed to quantify the relative roles of land cover and topographic variables on the population genetic differentiation and diversity of a stream-breeding savanna treefrog (Bokermannohyla ibitiguara) across...

Identifying priority giant anteater (Myrmecophaga tridactyla) populations for conservation in São Paulo State, Brazil

Ricardo Sartori, Alessandro Lopes, Luiz Aires, Rita Bianchi, Cinara De Mattos, Adriana Morales & Lilian Castiglioni
Habitat loss is the main threat to biodiversity conservation worldwide. Some species may be particularly susceptible to the effects of fragmentation and the isolation of populations. The impacts of human activity on wild animal populations may be understood through relationships between individual genetic data and spatial landscape variables, particularly when considering local population dynamics influenced by fragmented habitats. Thus, the objective of this study was to analyze the population structure and genetic diversity of the...

Sequences of Pitcairnia flammea

Clarisse Silva-Palma, Mateus Ribeiro Mota, Fabio Pinheiro, Barbara Simões Dos Santos Leal, Carla Haisler Sardelli & Tânia Wendt Wendt
Geographic isolation and reduced population sizes can lead to local extinction, low efficacy of selection, and decreased speciation. However, population differentiation is an essential step of biological diversification. In allopatric speciation, geographically isolated populations differentiate and persist until the evolution of reproductive isolation and ecological divergence complete the speciation process. Pitcairnia flammea allow us to study the evolutionary consequences of habitat fragmentation on naturally disjoint rock outcrop species from the Brazilian Atlantic Rainforest (BAF). Our...

Data from: Fruit traits of pioneer trees structure seed dispersal across distances on tropical deforested landscapes: implications for restoration

Paulo H. S. A. Camargo, Marco A. Pizo, Pedro H. S. Brancalion & Tomás A. Carlo
Pioneer trees with fleshy fruits are typically planted in restoration projects to attract frugivores as a mean to increase dispersal and accelerate forest regeneration. However, differences in fruit traits of pioneer trees can potentially influence dispersal and their restoration outcomes. Here we investigated the effects of bird and plant traits, and distance to forest fragments, on the seed rain using a tree-planting experiment replicated in 12 deforested sites in Brazil. Factors were fruit traits of...

Genomic data from the Brazilian sibilator frog reveals contrasting Pleistocene dynamics and regionalism in two South American dry biomes

Maria Tereza Thomé, Bryan Carstens, Miguel Rodrigues, João Alexandrino & Célio Haddad
Aim: Knowledge about the Neotropical dry formations, particularly the Caatinga, remains rudimentary compared to other biotas in the region. Here we address several biogeographical hypotheses by combining intense geographic and genomic sampling obtained for the Brazilian sibilator frog. We specifically test predictions related to the putative roles of past climate shifts (Pleistocene and Holocene) and local geographic barriers (past and current courses of the São Francisco river, SFR) in causing population differentiation in this species....

Data from: Partitioning multiple facets of beta diversity in a tropical stream macroalgal metacommunity

Ciro Branco, Pitágoras Bispo, Cleto Peres, Aurélio Tonetto, Rogério Krupek, Michael Barfield & Robert Holt
Aim: We evaluated different dimensions of beta diversity (taxonomic, phylogenetic, and functional), and its components (spatial turnover and nestedness), of a stream macroalgal metacommunity, as well as the effect of local environmental variables, types of biome, and spatial factors on these dimensions and components. Location: Ten natural areas of southern Brazil, covering the main biomes represented in the region. Methods: We analyzed a data set collected in 105 stream segments using a dissimilarity partitioning approach...

Lost and found: frogs in a biodiversity hotspot rediscovered with environmental DNA

Carla Martins Lopes, Délio Baêta, Alice Valentini, Mariana Lúcio Lyra, Ariadne Fares Sabbag, João Luiz Gasparini, Tony Dejean, Célio Fernando Baptista Haddad & Kelly Raquel Zamudio
Declines and extinctions are increasing globally and challenging conservationists to keep pace with biodiversity monitoring. Organisms leave DNA traces in the environment and this free DNA in soil, water, and air is referred to as environmental DNA (eDNA). The analysis of eDNA is a highly sensitive method with the potential to rapidly assess local diversity and the status of threatened species. We searched for DNA traces of 30 target amphibian species of conservation concern, at...

Registration Year

  • 2020
    13

Resource Types

  • Dataset
    13

Affiliations

  • Sao Paulo State University
    13
  • University of Sao Paulo
    3
  • Cornell University
    2
  • Estación Biológica de Doñana
    1
  • Bangor University
    1
  • Stanford University
    1
  • University of Pretoria
    1
  • The Ohio State University
    1
  • Aarhus University
    1
  • University of California, Berkeley
    1