Micro-phytoplankton richness in Contas River, state of Bahia, northeastern Brazil

Severiano, Juliana dos Santos; Moura, Ariadne do Nascimento; Oliveira, Helton Soriano Bezerra de; Cordeiro‐Araújo, Micheline Kézia; Dantas, Ênio Wocyli

doi:10.15560/8.2.218

Cited by 10 publications

(7 citation statements)

References 7 publications

(9 reference statements)

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“…Since then several records of the occurrence of this dinoflagellate in many Brazilian aquatic ecosystems were published (SantosWisniewski et al, 2007;Matsumura-Tundisi et al, 2010;Oliveira et al, 2011;Severiano et al, 2012;Silva et al, 2012. To our knowledge, this is the first time that the occurrence of Ceratium furcoides is reported in a highaltitude natural, shallow, temporary lake in Brazil.…”

Section: Introductionmentioning

confidence: 73%

First record of Ceratium furcoides (Dinophyta), an invasive species, in a temporary high-altitude lake in the Iron Quadrangle (MG, Southeast Brazil)

et al. 2015

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Dinoflagellates of the genus Ceratium are generally marine organisms, but rare occurrences in freshwater have been observed in Brazil. In this paper we are recording for the first time the presence of Ceratium furcoides, an invasive species, in a shallow, natural intermittent pool formed at a high-altitude at the southern end of the Iron Quadrangle, an iron-mining district of Minas Gerais State (Southeast Brazil). Samples were collected in October and November of 2010 (rainy period). The population density of this organism observed in Lagoa Seca ("Dry Pool") was very low, at most 4 ind L -1. Mountain lakes are extremely vulnerable to atmospheric deposition of organisms, making them valuable witnesses both of the many forms of impact arising from human activities and of the extended global connections that facilitate the dispersion and introduction of new species over great distances. Studies on the population dynamics of C. furcoides in natural tropical systems are still rare and very recent to the brazilian scenario and hence the monitoring of its dynamics and the potential impact on aquatic communities of its becoming established are essential to an understanding of the process of bioinvasion by this species.Keywords: bioinvasion, dinoflagellate, Ceratium furcoides, high-altitude lake, Minas Gerais. Primeiro registro de Ceratium furcoides (Dinophyta), uma espécie invasora, em um lago temporário de alta altitude no Quadrilátero Ferrífero (MG, Sudeste do Brasil) ResumoDinoflagelados do gênero Ceratium são principalmente marinhos, porém existem raras ocorrências em água doce no Brasil. Neste estudo registramos pela primeira vez a ocorrência de Ceratium furcoides, uma espécie invasora em um lago altitudinal natural raso localizado na porção sul do Quadrilátero Ferrífero, uma área de extração mineral no estado de Minas Gerais. As coletas foram realizadas nos meses de outubro e novembro de 2010 (período chuvoso).As densidades observadas para C. furcoides na Lagoa Seca foram muito baixas, com máximo de 4 ind L -1 . Lagos de altitude são altamente vulneráveis à deposição atmosférica, o que os torna importantes testemunhos não só dos múltiplos impactos derivados de atividades humanas, mas também das extensas conexões globais, que acabam por facilitar a dispersão e introdução de espécies. Estudos sobre a dinâmica de C. furcoides em sistemas tropicais naturais ainda são escassos e por isso, o monitoramento de sua dinâmica e dos impactos potenciais em comunidades aquáticas a partir do seu estabelecimento, torna-se fundamental para o entendimento dos processos relacionados à bioinvasão desta espécie.Palavras-chave: bioinvasão, dinoflagelado, Ceratium furcoides, lago de alta altitude, Minas Gerais.

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Section: Introductionmentioning

confidence: 73%

First record of Ceratium furcoides (Dinophyta), an invasive species, in a temporary high-altitude lake in the Iron Quadrangle (MG, Southeast Brazil)

et al. 2015

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“…Frequency of occurrence (FO) of the butterfly species was calculated by considering the number of sampled sites in which the species occurred in relation to the total number of samples (or sites) surveyed (Severiano et al 2012). Such an analysis was viewed into the following categories when FO > 70% [very frequent (VF)]; ≤70% ->45% [frequent (F); ≤45% ->15% [Infrequent (IF)]; ≤ 15% [Rare].…”

Section: Study Sitementioning

confidence: 99%

Butterflies of Sundarban Biosphere Reserve, West Bengal, eastern India: a preliminary survey of their taxonomic diversity, ecology and their conservation

Chowdhury¹

2014

J. Threat. Taxa

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Competing Interest: The author declares to have financial support from the Centre for Biodiversity and Ecological Studies (CBES) for the submitted work, and no other relationships or activities that have inspired the same.Author Details: Dr. Soumyajit Chowdhury is a faculty member of the Department of Zoology, V.J.R. College, Kolkata and founder member of Centre for Biodiversity and Ecological Studies (CBES). He has been working on the biodiversity and ecology of Indian insects and authored several research articles. He also initiated 'BIOME india', an online resource on the ecosystem-based conservation programmes of India. Acknowledgement:The author is indebted to the Centre for Biodiversity and Ecological Studies for supporting, in part, the survey work on lepidopteran fauna and different mangrove and mangrove-associated floral components in Indian Sundarbans. Nihar Mondal, Tanmoy Mondal and Amit Das among several others deserve special thanks for logistic support during field trips in different parts of central, western and eastern Sundarbans. Abstract:The Indian Sundarbans, part of the globally famous deltaic eco-region, is little-studied for butterfly diversity and ecology. The present study reports 76 butterfly species belonging to five families, which is a culmination of 73 species obtained from surveys conducted over a period of three years (2009)(2010)(2011) in reclaimed and mangrove forested areas and three species obtained from an earlier report. Six of these species are legally protected under the Indian Wildlife (Protection) Act, 1972. Random surveys were employed for both the study areas, supplemented by systematic sampling in reclaimed areas. The reclaimed and forested areas differed largely in butterfly richness (Whittaker's measure of β diversity = 0.55). For sample-based rarefaction curves, butterfly genera showed a tendency to reach an asymptote sooner than the species. Numerous monospecific genera (77.19% of the taxa) resulted in a very gentle but non-linear positive slope for the species-genus ratio curve. A species-genus ratio of 1.33 indicated strong intra-generic competition for the butterflies of the Indian Sundarbans. Mangrove areas were species poor, with rare species like Euploea crameri, Colotis amata and Idea agamarshchana being recorded in the mangrove area; while Danaus genutia was found to be the most frequent butterfly. Butterfly abundance was very poor, with no endemic species and the majority (53.9% of the taxa; n=41) were found locally rare. The changing composition of butterflies in the once species-poor mangrove zone of the fragile Sundarbans may interfere with their normal ecosystem functioning.

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“…No Estado da Bahia, o conhecimento da família está restrito a alguns trabalhos de cunho ecológico (Fuentes et al 2010, Severiano et al 2012, fisiológico (Mendes et al 2012) e taxonômico (Martins et al 1991, Ramos et al 2014. Contudo, não existem estudos específicos de Scenedesmacae, sendo o presente, portanto, pioneiro no Estado.…”

Section: Introductionunclassified

Scenedesmaceae (Chlorophyta, Chlorophyceae) de duas áreas do Pantanal dos Marimbus (Baiano e Remanso), Chapada Diamantina, Estado da Bahia, Brasil

Ramos

Bicudo

Moura

2015

Hoehnea

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-(Scenedesmaceae (Chlorophyta, Chlorophyceae) from two areas of the Marimbus Pantanal (Baiano and Remanso), Chapada Diamantina, Bahia State, Brazil). This work deal with the taxonomy of the Family Scenedesmaceae from Marimbus Pantanal, Environmental Protection Area Marimbus-Iraquara, Chapada Diamantina, Bahia State, Brazil. Samples from the periphyton and plankton were collected in two areas of the Marimbus Pantanal (Baiano and Remanso) during the dry season (April, June, and August 2011) and the rainy season (October, December 2011, and February 2012). This study describes 27 taxa, including 18 additions to the phycological flora of Bahia. Keywords: coccoid green algae, Coelastrum, Desmodesmus, Scenedesmus, taxonomy RESUMO -(Scenedesmaceae (Chlorophyta, Chlorophyceae) de duas áreas do Pantanal dos Marimbus (Baiano e Remanso), Chapada Diamantina, Estado da Bahia, Brasil). Este estudo trata do estudo taxonômico da família Scenedesmaceae do Pantanal dos Marimbus, Área de Proteção Ambiental Marimbus-Iraquara, Chapada Diamantina, Bahia, Brasil. As amostras provenientes do perifíton e do plâncton foram coletadas em duas áreas do Pantanal dos Marimbus (Baiano e Remanso), durante o período seco (abril, junho e agosto de 2011) e o período chuvoso (outubro, dezembro de 2011 e fevereiro de 2012). São descritos 27 táxons, dos quais 18 são adições a flora ficológica da Bahia.

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Micro-phytoplankton richness in Contas River, state of Bahia, northeastern Brazil

Cited by 10 publications

References 7 publications

First record of Ceratium furcoides (Dinophyta), an invasive species, in a temporary high-altitude lake in the Iron Quadrangle (MG, Southeast Brazil)

First record of Ceratium furcoides (Dinophyta), an invasive species, in a temporary high-altitude lake in the Iron Quadrangle (MG, Southeast Brazil)

Butterflies of Sundarban Biosphere Reserve, West Bengal, eastern India: a preliminary survey of their taxonomic diversity, ecology and their conservation

Scenedesmaceae (Chlorophyta, Chlorophyceae) de duas áreas do Pantanal dos Marimbus (Baiano e Remanso), Chapada Diamantina, Estado da Bahia, Brasil

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