Microalgae of the continental shelf off Paraná State, southeastern Brazil: a review of studies

Brandini, Frederico Pereira; Fernandes, Luciano F.

doi:10.1590/s1413-77391996000100008

Cited by 19 publications

(20 citation statements)

References 10 publications

(4 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The trophic index -TRIX has been effective in diagnosing the state of eutrophication in various coastal lagoons (BRANDINI;FERNANDES, 1996;COELHO;GAMITO;PÉREZ-RUZAFA, 2007;CAÑEDO-ARGÜELLES et al, 2012;COTOVICZ, 2013;ACQUAVITA et al, 2015). The results obtained by these authors showed that the index satisfactorily represented the variations found in the concentrations of the dissolved forms of nitrogen, and total phosphorus, of the reduced forms of nitrogen, of the reduction of dissolved oxygen concentrations and increased concentrations of chlorophyll --a.…”

Section: Spatial Temporal Evolution Of the Trophic Statementioning

confidence: 95%

Space time evolution of the trophic state of a subtropical lagoon: Lagoa da Conceição, Florianópolis Island of Santa Catarina, Brazil

Silva

Franco

Fonseca

et al. 2017

RBRH

View full text Add to dashboard Cite

High levels of eutrophication in coastal lagoons due to human activity have been documented worldwide. Among the main impacts observed are anoxia, hypoxia, toxic algal blooms, fish kills, loss of biodiversity and loss of bathing. This study aimed to evaluate the evolution of the trophic state of Lagoa da Conceição, a subtropical lagoon located in an urbanized watershed on the island of Santa Catarina -Brazil. Spatio temporal patterns of stratification and eutrophication were investigated to understand the main biochemical changes over time. The water quality data were obtained from field campaigns supplemented with literature of the last 15 years. The vertical structure of the water column and the trophic state were evaluated by the stratification index and the TRIX index, respectively. Analyses of variance were performed in order to identify possible temporal variations in vertical stratification and trophic level. Eutrophication effects on biogeochemical cycles were verified through a multi-dimensional cluster analysis (MDS) and correlations between variables related to physical, chemical and biological processes were verified by principal component analysis (PCA). The results showed that the water column is homogeneous in all regions except in the central region of the lagoon, and the highest ammonia concentrations and lowest dissolved oxygen concentrations with periods of anoxia are observed in bottom waters. The study looked at the high trophic level of the lagoon and its inability to process the biogeochemical changes imposed by urban development.Keywords: TRIX; Coastal lagoons; Stratification; Hypoxia; Biogeochemical cycles. RESUMONíveis elevados de eutrofização em lagunas costeiras devido à atividade antrópica têm sido documentados no mundo inteiro. Dentre os impactos observados pode-se destacar anoxia, hipoxia, floração de algas tóxicas, mortalidade de peixes, redução da biodiversidade e perda da balneabilidade. O presente estudo teve por objetivo avaliar a evolução do estado trófico da Lagoa da Conceição, uma laguna subtropical localizada em uma bacia hidrográfica urbanizada na Ilha de Santa Catarina -Brasil. Para compreender as principais modificações biogeoquímicas ao longo do tempo foram investigados os padrões espaço-temporais da estratificação e da eutrofização. Os dados de qualidade da água foram obtidos a partir de campanhas de campo complementados com dados da literatura dos últimos 15 anos. A estrutura vertical da coluna da água e o estado trófico foram avaliados pelo o índice de estratificação e o índice TRIX, respectivamente. Análises de variância foram realizadas com o objetivo de identificar possíveis variações temporais na estratificação vertical e no nível trófico. Efeitos da eutrofização nos ciclos biogeoquímicos foram verificados através de uma análise de agrupamento multidimensional (MDS) e correlações entre as variáveis relacionadas a processos físico-químicos e biológicos foram verificadas através da análise de componentes principais (PCA). Os resultados mostraram que há hom...

show abstract

Section: Spatial Temporal Evolution Of the Trophic Statementioning

confidence: 95%

Space time evolution of the trophic state of a subtropical lagoon: Lagoa da Conceição, Florianópolis Island of Santa Catarina, Brazil

Silva

Franco

Fonseca

et al. 2017

RBRH

View full text Add to dashboard Cite

show abstract

“…A necessidade de organizar as espécies registradas em listas para facilitar a consulta ocorreu a partir do trabalho de Moreira-Filho & Valente-Moreira (1984) Os estudos sobre a ecologia do fitoplâncton iniciaram-se na Baía de Paranaguá na década de 80 com os trabalhos de Brandini (1985a) e Brandini (1985b, este último realizou estudos ecológicos na Baía de Paranaguá, verificando a distribuição horizontal e sazonal do fitoplâncton, bem como os parâmetros ambientais (temperatura, salinidade, oxigênio e pH), biomassa e fotossíntese do fitoplâncton. A partir deste período a ecologia do fitoplâncton passou a ser estudada intensamente por diversos autores (Brandini & Moraes 1986, Brandini 1988a, b, Brandini et al 1989, Brandini 1990a, b, Brandini & Thamm 1994, Brandini & Fernandes 1996, Brandini et al 1997e Brandini et al 2001. Brandini & Fernandes (1996) mostraram que a comunidade fitoplanctônica da plataforma do Paraná é formada por associação costeira, composta por espécies neríticas eurihalinas (Skeletonema costatum, Chaetoceros sp.)…”

Section: Resultsunclassified

“…A partir deste período a ecologia do fitoplâncton passou a ser estudada intensamente por diversos autores (Brandini & Moraes 1986, Brandini 1988a, b, Brandini et al 1989, Brandini 1990a, b, Brandini & Thamm 1994, Brandini & Fernandes 1996, Brandini et al 1997e Brandini et al 2001. Brandini & Fernandes (1996) mostraram que a comunidade fitoplanctônica da plataforma do Paraná é formada por associação costeira, composta por espécies neríticas eurihalinas (Skeletonema costatum, Chaetoceros sp.) e diatomáceas bênticas ressuspendidas.…”

Section: Resultsunclassified

See 1 more Smart Citation

Diatomáceas (Bacillariophyta) marinhas e estuarinas do Paraná, Sul do Brasil: lista de espécies com ênfase em espécies nocivas

2006

View full text Add to dashboard Cite

The species check-lists are important to know the local biodiversity. If they are harmful and/or exotic they can cause environmental damages. The portuary regions' aquatic biota survey is valuable to inform which are the high risk species in the water (exotic or harmful species). The species can be caught when the ships are anchored in Parana harbors during the ballast taken. After that, these species can be transferred to the next harbor where it will be discharged, so it starts the biological invasion. In this article the marine and estuarine diatoms of Parana have been listed based on some issues that have been published since 1918 and over the results of ALARME Project (Ballast Water: Risk analysis, Environmental Management Plan and Monitoring of Exotic Species in Paranagua Harbor, Parana) in the Estuarine Paranagua Complex. An amount of 789 specific taxa was recorded and distributed in 167 genera on Parana shore. Among the 789 a number of 575 specific taxa is distributed in 152 genera which were recorded in the Estuarine Paranagua Complex. Some of these species are considered potentially harmful for their toxins production i. e. Amphora coffaeformis and Pseudo-nitzschia spp. The other ones have harmful effects because of anoxia due to the excess of biomass decomposed by bacteriae during the blooming periods. Furthermore it can happens excessive oxygen consumption by algae during breathing. These species are Asterionellopsis glaciallis, Cerataulina pelagica, Coscinodiscus spp, Cylindrotheca closterium, Leptocylindrus spp and Skeletonema costatum. Furthermore, Chaetoceros spp, have setae that damage the fishes' gills causing mass mortalities in some regions. Some species found in samples of the ALARME project are new records for the Parana coast such as Bellerochea horologicales, Biremis circumtexta, Gyrosigma macrum, Licmophora remulus, Nitzschia behrei, Pseudonitzschia calliantha, P. multisseries and Thalassiosira subtilis var. máxima.

show abstract

“…The proximity of transects SSB1 and SSB2 to the coast may favour the occurrence of Johannesbaptistia sp., due to its association with an environment with higher loads of organic matter (Cohen et al, 1986), which is also commonly observed in tropical environments upon presence of river inflows (Bauer et al,, 2008). The genus Thrichodesmium characterizes high productivity in the oceanic region (Gallon et al, 1996) and occurs from the northeast of Brazil (Koening & Macedo, 1999) to the southeastern and southern (Brandini & Fernandes, 1996), but with low density in Subantarctic Water (Brandini, 1988).…”

Section: Discussionmentioning

confidence: 99%

The first continuous plankton sampling by VOR (Towed Oceanographic Vehicle) in southeastern and southern Brazil waters

Tamanaha¹,

Cunha²,

Resgalla³

2016

lajar

View full text Add to dashboard Cite

Plankton sampling with the Continuous Plankton Sampling survey has been conducted since 1938 in the Northern Atlantic Ocean and North Sea, where in both cases historical records have documented climate change. Plankton sampling with the VOR (Towed Oceanographic Vehicle) on industrial fishing boats was performed in May-June of 2013 off the southeastern and southern coasts of Brazil (between 23º00`S-44º21`W and 31º15`S-50º06`W). The speed of VOR towing onboard the fishing vessels was 8-10 knots to 10-12 m of depth. The size of mesh silk used was 250-270 μm. The total of taxa is 73 phytoplankton, 26 zooplankton, 10 protozooplankton (Ciliophora) and ichityoplankton (fish eggs) were recorded. The dominant phytoplankton groups detected were diatoms and dinoflagellates, although cyanobacteria were also abundant in the southeast region. The zooplankton with a size class of less than 2 mm was the most frequent. A positive correlation was observed between herbivorous zooplankton and phytoplankton in the coastal waters. Keywords: continental shelf, ship of opportunity, VOR, plankton, Brazil. Primer muestreo continuo de plancton con VOR (Vehículo OceanográficoRemolcado) en aguas del sureste y sur de Brasil RESUMEN: El muestreo de plancton con el Continuous Plankton Recorder (CPR) se ha efectuado desde el año 1938 en el Océano Atlántico Norte y Mar del Norte, donde en ambos casos el registro histórico ha documentado el cambio climático. El muestreo de plancton con el VOR (Vehículo Oceanográfico de Remolque), empleado por la flota pesquera industrial se efectuó en mayo-junio de 2013 en la costa sur y sureste de Brasil (23º00`S-44º21`W y 31º15`S-50º06`W). La velocidad de arrastre del VOR, utilizada por las embarcaciones pesqueras fue de 8-10 nudos a 10-12 m de profundidad, utilizando un tamaño de red de 250-270 µm. Se registró un total de 73 taxa de fitoplancton, 26 de zooplancton, 10 de protozoarios e ictioplancton (huevos de peces). Los grupos dominantes de fitoplancton fueron diatomeas y dinoflagelados, aunque las cianobacterias fueron también abundantes en la región sudeste. El zooplancton con un tamaño de clase <2 mm fue el más frecuente. Se observó una correlación positiva entre el zooplancton herbívoro y fitoplancton en aguas costeras. Palabras clave: plataforma continental, barco de oportunidad, VOR, plancton, Brasil.

show abstract

Microalgae of the continental shelf off Paraná State, southeastern Brazil: a review of studies

Cited by 19 publications

References 10 publications

Space time evolution of the trophic state of a subtropical lagoon: Lagoa da Conceição, Florianópolis Island of Santa Catarina, Brazil

Space time evolution of the trophic state of a subtropical lagoon: Lagoa da Conceição, Florianópolis Island of Santa Catarina, Brazil

Diatomáceas (Bacillariophyta) marinhas e estuarinas do Paraná, Sul do Brasil: lista de espécies com ênfase em espécies nocivas

The first continuous plankton sampling by VOR (Towed Oceanographic Vehicle) in southeastern and southern Brazil waters

Contact Info

Product

Resources

About