7 documents found, page 1 of 1
Pervasive gaps in Amazonian ecological research
Carvalho, Raquel L.; Resende, Angelica F.; Barlow, Jos; França, Filipe M.; Moura, Mario R.; Maciel, Rafaella; Alves-Martins, Fernanda; Shutt, JackBiodiversity loss is one of the main challenges of our time,1,2 and attempts to address it require a clear un derstanding of how ecological communities respond to environmental change across time and space.3,4 While the increasing availability of global databases on ecological communities has advanced our knowledge of biodiversity sensitivity to environmental changes,5–7 vast areas of the tropics remain underst...
Review of the genus Aturbina Lugo-Ortiz & McCafferty (Ephemeroptera: Baetidae)
Salles, Frederico Falcaõ; Boldrini, Rafael; Shimano, Yulie; Cabette, Helena Soares RamosIn the present work, based on material from several localities in Brazil, the genus Aturbina is reviewed. Two new species, A. maculata, sp. nov. and A. nigra, sp. nov. are described based on nymphs and adults; the type-species, A. georgei, is redescribed based on nymphs and reared adults; the nymphs and adults of A. beatrixae are respectively described and redescribed, as well as recorded from Brazil for the fi...
Contribution to the taxonomy of the Terpides lineage (Ephemeroptera: Leptophleb...
Boldrini, Rafael; Salles, Frederico Falcaõ; Cabette, Helena Soares RamosIn the present work, based on material from several localities in Brazil, we present a contribution to the taxonomy of the Terpides lineage, a monophyletic group of Neotropical mayflies that encompasses three genera: Terpides, Tikuna, and Fittkaulus. A new species of Terpides is described from the States of Espírito Santo and Mato Grosso, based on nymphs, male and female imagos. The male imago of the type speci...
Effect of the abiotic factors on brachymetra albinervis albinervis (Heteroptera...
Giehl, Nubia França da Silva; Fonseca, Paula V B; Dias-Silva, Karina; Brasil, Leandro Schlemmer; Cabette, Helena Soares RamosWe analyzed the influence of abiotic factors, longitudinal and temporal distribution on the abundance of Brachymetra albinervis albinervis Amyot & Serville, 1843. Three sites of Cerrado stream were assessed: headwater, intermediary and river mouth, monthly for a year (June 2011 to May 2012). At each site, the following abiotic variables were monthly measured in a linear 100 meters transect: dissolved oxygen, wa...
Odonate assemblage structure in relation to basin and aquatic habitat structure...
Juen, Leandro; Cabette, Helena Soares Ramos; Marco Jr., Paulo deStructural properties of aquatic habitats are the basis of several theories produced to explain the functioning of aquatic environments. We predicted a longitudinal change of ecosystem properties along the river, and also that potamal areas of the river are similar to lakes. In rivers with periodic floods we also expect a high degree of similarity due to increased environmental similarity and increase dispersal...
As variações na comunidade de Odonata (Insecta) em córregos podem ser explicada...
Oliveira Junior, José Max Barbosa; Cabette, Helena Soares Ramos; Pinto, Nelson Silva; Juen, LeandroA teoria do Paradoxo do Plâncton postula que ambientes que apresentam flutuações temporais periódicas apresentariam alta diversidade de espécie, uma vez que essas flutuações impediriam a ocorrência da exclusão competitiva. Este trabalho teve como objetivo avaliar a variação da comunidade de Odonata adulto na Bacia do Rio Suiá-Mi&c...
Distribuição de Heteroptera Aquáticos (Insecta) em Diferentes Tipos de Substrat...
Dias-Silva, Karina; Cabette, Helena Soares Ramos; Giehl, Núbia França da Silva; Juen, LeandroA comunidade de Heteroptera de córregos do cerrado do Leste Matogrossense foi analisada para determinar os tipos de substratos que contemplam a maior variação de composição de espécies. Foram realizadas coletas nos substratos de folhiço de corredeira e remanso, raiz, cascalho, pedra (matacão), areia e na superfície d’água (camada de ten...