Variação Espacial e Temporal do Fitoplâncton na Plataforma Continental de Pernambuco-Brasil.

Eskinazi-Leça, Enide; Cunha-Silva, Maria da Glória G.; Koening, Maria Luise; Macêdo, Sílvio José de; Costa, Kátia Muniz Pereira da

doi:10.5914/tropocean.v25i1.2724

Cited by 14 publications

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“…The influence of the Paratibe river and several domestic sewage outfalls and the low water circulation due to the presence of coastal protection structures were the principals responsible by the stressed environment condition on the north coast of Olinda. Similar results have been found by Eskinazi et al (1997) and Koening et al (2003) near Recife and Suape harbors, respectively, under the influence of similar environmental conditions (freshwater and sewage outfalls) and by Koening and Eskinazi (1991) and Moura (1992) in other coastal zones along Pernambuco coast.…”

Section: Discussionsupporting

confidence: 75%

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Effect of coastline properties and wastewater on plankton composition and distribution in a stressed environment on the north coast of Olinda-PE (Brazil)

Pereira

Jiménez

Koening

et al. 2005

Braz. arch. biol. technol.

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A study of the structure of the plankton community along the coastal zone of the Casa Caiada-Rio Doce area (Pernambuco, Brazil) is presented. The results obtained indicated that in the protected zones the water presented high turbidity, high temperature, low salinity and high nutrient and oxygen rates. All of these conditions were responsible for the reduction in plankton diversity and an increase in the biomass of the most opportunistic (rstrategist) species e.g. Gyrosigma balticum and Bacillaria paxillifera (Phytoplankton) and Euterpina acutifrons (Zooplankton). The differences found with respect to others area studies performed in pristine conditions indicated that plankton structure could be used as an environmental health indicator and that, in this specific area, it was indicative of a poor quality coastal environment.

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Section: Discussionsupporting

confidence: 75%

“…In contrast, large variations in diversity, biomass and productivity of the planktonic communities have been observed in stressed environments (e.g. Ottman et al, 1965/66;Eskinazi et al, 1997;Webber and Webber, 1998;Linton and Warner 2003;Koening et al 2003). …”

Section: Introductionmentioning

confidence: 99%

Effect of coastline properties and wastewater on plankton composition and distribution in a stressed environment on the north coast of Olinda-PE (Brazil)

Pereira

Jiménez

Koening

et al. 2005

Braz. arch. biol. technol.

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“…Nutrient removal from the sediment was also registered during the rainy season, when water turbulence was intensified by winds and tides (Eskinazi-Leça et al, 1997). Thus, the nutrient concentrations were influenced by land drainage and bottom sediments, with higher values of nitrogen-containing compounds observed during the rainy season, which contributed to the higher phytoplankton densities at that time.…”

Section: Entomoneis Alata (Ehrenberg) Kützingmentioning

confidence: 87%

“…Besides this, industrial and urban effluent disposal seaward of the dam have been impacting the whole Botafogo system (Macêdo et al, 2000). In areas where land is of little influence and the amount of suspended material is not decreasing the euphotic zone, phytoplankton can show higher flowering during the rainy season since higher nutrient values prevail (Eskinazi-Leça et al, 1997). Phytoplankton production increase associated with the precipitation regime can also be verified in Brazilian estuaries, such as Ubatuba, Santa Cruz Channel, Cananéia, and the Paranaguá Bay (Kutner, 1972;Tundisi et al, 1973;Tundisi et al, 1978;Passavante, 1979;Brandini, 1985).…”

Section: Entomoneis Alata (Ehrenberg) Kützingmentioning

confidence: 92%

Phytoplankton nyctemeral variation at a tropical river estuary (Itamaracá - Pernambuco - Brazil)

et al. 2004

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The Botafogo estuary is of socio-economical importance for Pernambuco State. It is located at the north of Santa Cruz Channel, Itamaracá, Pernambuco, Brazil (07 o 42'50"S and 34 o 52'10"W). There is a critical need to understand its functioning because of the rate at which this area is being converted to land uses. The phytoplankton dynamics was studied to enhance the knowledge of and verify the possible changes which have occurred in this ecosystem. Sampling was carried out with a plankton net 65 micrometers mesh size for qualitative data, and a Van Dorn bottle for quantitative data. Concurrent hydrological and chlorophyll-a data were collected. Samplings were made in one fixed station in July 1996 (rainy season) and December 1996 (dry season), at 3-hour intervals during 24 hours. Eighty-seven specific and infra-specific taxa were identified from net plankton samples. Diatoms were most frequent, mainly Coscinodiscus centralis and Odontella regia in the rainy and dry seasons, respectively. Phytoplankton density varied from 205,000 to 1,210,000 cell.L -1 in the dry season, and from 230,000 to 2,510,000 cell.L -1 in the rainy season, indicating eutrophic conditions. Most numerically abundant were the diatoms Cyclotella meneghiniana and Cylindrotheca closterium and the phytoflagellates. The ecosystem is polluted, and deleterious effects are minimized by the marine influence which allows periodic water renewal.Key words: estuarine phytoplankton, nyctemeral variation, tropical. RESUMO

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“…Estas características inibem o desenvolvimento do fitoplâncton nesse período e incrementam as condições eutróficas do ambiente, fato registrado em outras áreas do Norte (PAIVA; ESKINAZI-LEÇA, 1990) e Nordeste do Brasil (ESKINAZI-LEÇA et al, 1997;PEREIRA et al, 2005, SANTIAGO et al, 2010.…”

Section: Discussionunclassified

Fitoplâncton como ferramenta de gestão ambiental na praia de Brasília Teimosa, Pernambuco, nordeste do Brasil.

Ferreira¹,

Cunha²,

Firmo³

et al. 2013

TropOcean

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O objetivo deste trabalho foi avaliar os parâmetros ambientais, biomassa, comunidade fitoplanctônica e espécies bioindicadoras, como ferramenta de gestão ambiental na praia Brasília Teimosa, Pernambuco (8º04’S; 34º52’W). Parâmetros abióticos (precipitação, temperatura da água, salinidade, material em suspensão, teor e taxa de saturação do oxigênio, nitrito, nitrato, fosfato e silicato) foram obtidos simultaneamente às coletas de fitoplâncton (garrafa e rede) no período chuvoso (maio; junho e julho/2005) e de estiagem (novembro e dezembro/2005; janeiro/2006). Com exceção dos valores de nitrato (maiores no período chuvoso), os demais parâmetros estiveram dentro dos padrões recomendados. Foram identificados 84 taxa, com maior representatividade das diatomáceas em abundância e frequência, Asterionellopsis glacialis, Chaetoceros lorenzianus, Cylindrotheca closterium, Helicotheca tamesis, Licmophora abbreviata e Skeletonema costatum. Altos níveis de nitrato, clorofila a, número de células por litro e espécies bioindicadores de eutrofização (Oscillatoria sp., Scenedesmus sp., Euglena sp., Synedra sp., Pleurosigma sp., Pseudo-nitzschia sp. e Skeletonema costatum) corroboraram a influência das atividades humanas na área, evidenciando um possível comprometimento da sanidade ambiental relacionado ao período de estiagem (período de maior exploração turística-recreativa). Palavras-chave: Bioindicadores, Clorofila a, Florescimentos, Diatomáceas.

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Variação Espacial e Temporal do Fitoplâncton na Plataforma Continental de Pernambuco-Brasil.

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Cited by 14 publications

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Effect of coastline properties and wastewater on plankton composition and distribution in a stressed environment on the north coast of Olinda-PE (Brazil)

Effect of coastline properties and wastewater on plankton composition and distribution in a stressed environment on the north coast of Olinda-PE (Brazil)

Phytoplankton nyctemeral variation at a tropical river estuary (Itamaracá - Pernambuco - Brazil)

Fitoplâncton como ferramenta de gestão ambiental na praia de Brasília Teimosa, Pernambuco, nordeste do Brasil.

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