Browsing by Author "Guevara, Roger"
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Item How much leaf area do insects eat? : a data set of insect herbivory sampled globally with a standardized protocol.(2021) Mendes, Gisele Medeiros; Silveira, Fernando Augusto de Oliveira e; Oliveira, Carolina Santos de; Cruz, Wesley Francisco Dáttilo da; Guevara, Roger; Ruiz Guerra, Betsabé; Castro, Maria Gabriela Boaventura de; Naidoo, Sershen; Ramdhani, Syd; Phartyal, Shyam S.; Ribeiro, Sérvio Pontes; Pinto, Victor Diniz; Vasconcelos, Heraldo Luis de; Leon, Richard Tito; Pereira, Cássio Cardoso; Barbosa, Bárbara de Carvalho; Carvalho, Gabriel Martins de; Val, Ek del; Buisson, Elise; Arruda, André Jardim; Toth, Jean Baptiste; Roque, Fabio de Oliveira; Souza, Allan Henrique de Almeida; Bolzan, Fabio; Neves, Frederico de Siqueira; Belisário, Juliana Kuchenbecker; Ferreira, Guilherme Ramos Demetrio; Santos, Luziene Seixas dos; Romero, Gustavo Quevedo; Omena, Paula Munhoz de; Silva, Jhonathan de Oliveira; Paolucci, Lucas Navarro; Queiroz, Elenir; Ooi, Mark K. J.; Mills, Charlotte H.; Gerhold, Pille; Merzin, Anne; Massante, Jhonny Capichoni; Aguilar, Ramiro; Carbone, Lucas M.; Campos, Ricardo Ildefonso de; Gomes, Inácio José de Melo Teles e; Neves, Gabriela Zorzal; Solar, Ricardo Ribeiro de Castro; Ramos, Letícia; Sobrinho, Tathiana Guerra; Pereira, Pedro Sanders; Cornelissen, Tatiana GarabiniHerbivory is ubiquitous. Despite being a potential driver of plant distribution and performance, herbivory remains largely undocumented. Some early attempts have been made to review, globally, how much leaf area is removed through insect feeding. Kozlov et al., in one of the most comprehensive reviews regarding global patterns of herbivory, have compiled published studies regarding foliar removal and sampled data on global herbivory levels using a standardized protocol. However, in the review by Kozlov et al., only 15 sampling sites, comprising 33 plant species, were evaluated in tropical areas around the globe. In Brazil, which ranks first in terms of plant biodiversity, with a total of 46,097 species, almost half (43%) being endemic, a single data point was sampled, covering only two plant species. In an attempt to increase knowledge regarding herbivory in tropical plant species and to provide the raw data needed to test general hypotheses related to plant–herbivore interactions across large spatial scales, we proposed a joint, collaborative network to evaluate tropical herbivory. This network allowed us to update and expand the data on insect herbivory in tropical and temperate plant species. Our data set, collected with a standardized protocol, covers 45 sampling sites from nine countries and includes leaf herbivory measurements of 57,239 leaves from 209 species of vascular plants belonging to 65 families from tropical and temperate regions. They expand previous data sets by including a total of 32 sampling sites from tropical areas around the globe, comprising 152 species, 146 of them being sampled in Brazil. For temperate areas, it includes 13 sampling sites, comprising 59 species. Thus, when compared to the most recent comprehensive review of insect herbivory (Kozlov et al.), our data set has increased the base of available data for the tropical plants more than 460% (from 33 to 152 species) and the Brazilian sampling was increased 7,300% (from 2 to 146 species). Data on precise levels of herbivory are presented for more than 57,000 leaves worldwide. There are no copyright restrictions. Please cite this paper when using the current data in publications; the authors request to be informed how the data is used in the publications.Item Species-level drivers of mammalian ectoparasite faunas.(2020) Cruz, Wesley Francisco Dáttilo da; Chávez, Nathalia Barrozo; Lira Noriega, Andrés; Guevara, Roger; Villalobos, Fabricio; Santiago Alarcon, Diego; Neves, Frederico de Siqueira; Izzo, Thiago Junqueira; Ribeiro, Sérvio PontesTraditionally, most studies have described the organization of host–parasite interaction networks by considering only few host groups at limited geographical extents. However, host–parasite relationships are merged within different taxonomic groups and factors shaping these interactions likely differ between host and parasite groups, making group-level differences important to better understand the ecological and evolutionary dynamics of these interactive communities. 2. Here we used a dataset of 629 ectoparasite species and 251 species of terrestrial mammals, comprising 10 orders distributed across the Nearctic and Neotropical regions of Mexico to assess the species-level drivers of mammalian ectoparasite faunas. Specifically, we evaluated whether body weight, geographical range size and within-range mammal species richness (i.e. diversity field) predict mammal ectoparasite species richness (i.e. degree centrality) and their closeness centrality within the mammal–ectoparasite network. In addition, we also tested if the observed patterns differ among mammal orders and if taxonomic closely related host mammals could more likely share the same set of ectoparasites. 3. We found that ectoparasite species richness of small mammals (mainly rodents) with large proportional range sizes was high compared to large-bodied mammals, whereas the diversity field of mammals had no predictive value (except for bats). We also observed that taxonomic proximity was a main determinant of the probability to share ectoparasite species. Specifically, the probability to share ectoparasites in congeneric species reached up to 90% and decreased exponentially as the taxonomic distance increased. 4. Further, we also detected that some ectoparasites are generalists and capable to infect mammalian species across different orders and that rodents have a remarkable role in the network structure, being closely connected to many other taxa. 5. Hence, because many rodent species have synanthropic habits they could act as undesired reservoirs of disease agents for humans and urban animals. Considering the reported worldwide phenomenon of the proliferation of rodents accompanying the demographic decrease or even local extinction of large-bodied mammal species, these organisms may already be an increasing health threat in many regions of the world.