A5042488369- Diatoms and Algae Research
- Aquatic Ecosystems and Phytoplankton Dynamics
- Freshwater macroinvertebrate diversity and ecology
- Fish biology, ecology, and behavior
- Business and Management Studies
- Soil erosion and sediment transport
- Analytical chemistry methods development
- Marine and coastal ecosystems
- Management and Marketing Education
- Water Quality and Pollution Assessment
- Chemistry Education and Research
- Coastal wetland ecosystem dynamics
- Geological formations and processes
- Paleontology and Stratigraphy of Fossils
Museu Paraense Emílio Goeldi
2017-2020
Instituto de Botânica
2014-2018
Luxembourg Institute of Science and Technology
2015
Ecological preferences and distribution of Aulacoseira species in southeastern Brazilian reservoirs with varying trophic states were studied. One hundred fourteen plankton samples (winter summer) from 57 sites located 16 analysed. Ten water quality parameters measured. identified using light, scanning transmission electron microscopy, new information on their ecological is provided here. Our results indicate that gradient the main driver distribution. Principal components analysis...
Two new diatom species, Fragilaria neotropica sp. nov. and F. spectra nov., from six reservoirs with different trophic status in the Alto Tietê River Basin, São Paulo, Brazil, are described. Descriptions based on light (LM) scanning electron microscopy (SEM) data revealing that both taxa have distinctive features separate them each other currently Fragilaria. has high stria density, broader (sometimes deformed) central area, capitate (often deflected) apices. This species was found abundance...
A new diatom species, Staurosirella acidophila, is described from surface sediments and phytoplankton samples tropical reservoirs in São Paulo, Brazil. Description of the taxon based on morphological characteristics observed using light (LM) scanning electron microscopy (SEM). The species characterized by having rhombic-lanceolate valves with acuminate to rostrate ends, striae uniseriate, uninterrupted valve face mantle areolae elongated, slit-like. Double line incipient spines for first...
Este estudo apresenta e compara a composição florística das diatomáceas planctônicas de sedimentos superficiais represas abastecimento do Sistema Alto Cotia (represas Pedro Beicht Cachoeira da Graça), inseridas na Reserva Florestal Morro Grande. Foram realizadas coletas em sete estações nos períodos seco chuvoso, sedimento superficial no período seco. As amostragens foram acompanhadas análises físicas químicas água. identificados 23 táxons distribuídos 11 gêneros. São disponibilizados dados...
Synedra rumpens var. fusa was originally described by Patrick, but there are only a few subsequent records of this variety in the literature. Analysis samples from Brazilian reservoirs containing morphologically similar taxon led us to analysis type material S. fusa, performed using light (LM) and scanning electron microscopy (SEM). In present manuscript, an amendment description is made its transfer genus Fragilaria as F. comb. et stat. nov. proposed. Moreover, billingsii sp. large...
Several species currently belonging to the genus Fragilariforma D.M. WilliAms et round are known worldwide.This is mainly characterized by regular spacing of uniseriate striae composed areolae bearing simple vela, and apical pore fields.A large number has been recognised for some regions South America tropical Africa, but few studies encompass type material and/or morphological variation existing within populations different species.The aim this study identify describe morphology these from...
RESUMO O Estágio de Docência (ED) é entendido como um componente curricular promotor da inter-relação entre teoria e prática pedagógica, capaz aproximar o pós-graduando das atividades ensino. Nesse contexto, os objetivos desse estudo foram: 1) avaliar a percepção dos discentes sobre as contribuições do ED desenvolvido pelo Programa Pós-graduação em Biodiversidade Vegetal Meio Ambiente Instituto Botânica (PPGIBt) para exercício docência no ensino superior; 2) investigar docentes PPGIBt...
Resumo Os registros das condições existentes durante a formação dos sítios arqueológicos foram obtidos partir de pesquisas interdisciplinares. Inseridas no campo da arqueobotânica, as diatomáceas são microalgas capazes indicar pretéritas. Quando presentes nos solos arqueológicos, podem cursos d’água próximos ao sítio ou inferir paleoambientais. Este artigo apresenta pioneiramente o registro em toda coluna bioantracológica um sambaqui. Nesse sentido, amostras do Sambaqui Porto Mina...