Las diatomeas del plancton marino de las costas del Brasil
Autor(a) principal: | |
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Data de Publicação: | 1955 |
Tipo de documento: | Artigo |
Idioma: | spa |
Título da fonte: | Boletim do Instituto Oceanográfico |
Texto Completo: | https://www.revistas.usp.br/biocean/article/view/27678 |
Resumo: | This paper deals with the Diatomacea from the plankton collected at the coast of the States of São Paulo and Rio Grande do Sul (Brazil), as well as with some specimens gathered along the brazilian coast (up to S.Pedro and S.Paulo Rocks), by Eng. J.Weiher, during his voyage to Europe. Three collections were examined from which 182 Diatomacea were determined as occurring in the Brazilian coast, as many as 126 of tnem being also peculiar to Uruguay coast while 114 were recorded from Argentine w aters. The material from Brazil was compared with that from the coasts of Uruguay and Argentine. The author points out that not all of them are planktonic speoiea since the material collected contained neritic as well as fresh water specimens. Among them there were strayed individuals that reached the marine plankton- Neritic species collected nearer the coast were also present in the material collected by Eng. Weiher, specially when the vessel approached Santos and Rio de Janeiro. This fact confirms the displacement of neritic material towards the open sea. For instance, Hemidiscus ova lis was also found in the open sea, in off shore samples from S.Francisco do Sul. Hemidiscus membranaceus and Asterolampra marylandica, both typically tropical species were found from Rio de Janeiro northwards. Chaetoceros coarctatus, frequent species in the Erazilian samples may be found in Uruguay during the winter months, when it appears all of a sudden and soon disappears. According to the author, it might well be an individual carried by the Erazilian Equatorial Current. These are, therefore, doubts that occur to all who devote themselves to the study of plankton and further investigations are necessary in order to find the answer to these questions. As a conclusion the author reminds that this paper was written with the purpose of serving as a guide for future investigations and it is far from being complete. Attention is called to the fact that it is necessary to carry on with systematic studies with the plankton from the Brazilian coast, including not only the Diatomacea but also all the micro-organisms that live in the marine environment. |
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Las diatomeas del plancton marino de las costas del Brasil This paper deals with the Diatomacea from the plankton collected at the coast of the States of São Paulo and Rio Grande do Sul (Brazil), as well as with some specimens gathered along the brazilian coast (up to S.Pedro and S.Paulo Rocks), by Eng. J.Weiher, during his voyage to Europe. Three collections were examined from which 182 Diatomacea were determined as occurring in the Brazilian coast, as many as 126 of tnem being also peculiar to Uruguay coast while 114 were recorded from Argentine w aters. The material from Brazil was compared with that from the coasts of Uruguay and Argentine. The author points out that not all of them are planktonic speoiea since the material collected contained neritic as well as fresh water specimens. Among them there were strayed individuals that reached the marine plankton- Neritic species collected nearer the coast were also present in the material collected by Eng. Weiher, specially when the vessel approached Santos and Rio de Janeiro. This fact confirms the displacement of neritic material towards the open sea. For instance, Hemidiscus ova lis was also found in the open sea, in off shore samples from S.Francisco do Sul. Hemidiscus membranaceus and Asterolampra marylandica, both typically tropical species were found from Rio de Janeiro northwards. Chaetoceros coarctatus, frequent species in the Erazilian samples may be found in Uruguay during the winter months, when it appears all of a sudden and soon disappears. According to the author, it might well be an individual carried by the Erazilian Equatorial Current. These are, therefore, doubts that occur to all who devote themselves to the study of plankton and further investigations are necessary in order to find the answer to these questions. As a conclusion the author reminds that this paper was written with the purpose of serving as a guide for future investigations and it is far from being complete. Attention is called to the fact that it is necessary to carry on with systematic studies with the plankton from the Brazilian coast, including not only the Diatomacea but also all the micro-organisms that live in the marine environment. Versa o presente trabalho sobre Diatomáceas do plancton marinho dos Estados de S.Paulo e R.G. do Sul, além de espécimes colhidos na costa brasileira até os rochedos S.Pedro e S.Paulo, pelo Eng. J.Weiher, durante a viagem por ele feita a Europa. Baseou-se o autor, pois, em três coleções das quais logrou determinar 182 Diatomáceas par a o Brasil e em que se encontravam também 126 peculiares as costas uruguaias e 114 frequentadoras das águas argentinas. Foi feita a comparação entre o material brasileiro e o das águas do Uruguai e Argentina. Assinala o autor que nem todas sâo planctónicas, havendo no acervo colhido, representantes neriticos e de água doce. Dentre estes existem espécimes desgarrados que foram parar no plancton marinho. Dentre o material colhido pelo Eng. Weiher figuram também espécies neriticas colhidas mais próximo da costa, sobretudo ao se aproximar o navio de Santos e R. de Janeiro. Comprova-se assim o deslocamento do material neritico, rumo ao mar aberto. Exemplo disso temos em Hemidiscus ovalis, encontrado também no mar largo, proveniente das amostras de S.Francisco do Sul. Do R. de Janeiro para o Norte encontrou o autor Hemidiscus membranáceas e Asterolampra ma rylandica, ambas tipicamente tropicais. Para o sul, no Uruguai, durante o inverno, encontra-se, as vezes, Chaetoceros coarctatus, espécie frequente nas amostras brasileiras, que lá surge repentinamente para desaparecer logo a seguir. Julga o autor que se trate de representante desviado pela corrente equatorial do Brasil, fazendo ver que existem incógnitas que se apresentam a quem se entrega ao estudo do plancton e que precisam ser resolvidas mediante estudo de maior profundidade. Finalizando, lembra o autor que o presente trabalho foi efetuado com o objetivo de servir de guia a futuras investigações, nào tendo, portanto, a pretençào de ser completo. Julga ainda que há necessidade de se estudar sistematicamente o plancton da costa brasileira, compreendendo nesse estudo nao só as Diatomáceas, mas todos os micro-organismos existentes no ambiente marinho. Universidade de São Paulo. Instituto Oceanográfico1955-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://www.revistas.usp.br/biocean/article/view/2767810.1590/S0373-55241955000100003Boletim do Instituto Oceanográfico; v. 6 n. 1-2 (1955); 93-141 Boletim do Instituto Oceanografico; Vol. 6 No. 1-2 (1955); 93-141 Boletim do Instituto Oceanográfico; Vol. 6 Núm. 1-2 (1955); 93-141 2316-89510373-5524reponame:Boletim do Instituto Oceanográficoinstname:Instituto Oceanográfico da Universidade de São Paulo (IOUSP)instacron:USPspahttps://www.revistas.usp.br/biocean/article/view/27678/29450Müller-Melchers, F.C.info:eu-repo/semantics/openAccess2012-06-24T14:40:01Zoai:revistas.usp.br:article/27678Revistahttps://www.revistas.usp.br/bioceanPUBhttps://www.revistas.usp.br/biocean/oaiamspires@usp.br0373-55240373-5524opendoar:2012-06-24T14:40:01Boletim do Instituto Oceanográfico - Instituto Oceanográfico da Universidade de São Paulo (IOUSP)false |
dc.title.none.fl_str_mv |
Las diatomeas del plancton marino de las costas del Brasil |
title |
Las diatomeas del plancton marino de las costas del Brasil |
spellingShingle |
Las diatomeas del plancton marino de las costas del Brasil Müller-Melchers, F.C. |
title_short |
Las diatomeas del plancton marino de las costas del Brasil |
title_full |
Las diatomeas del plancton marino de las costas del Brasil |
title_fullStr |
Las diatomeas del plancton marino de las costas del Brasil |
title_full_unstemmed |
Las diatomeas del plancton marino de las costas del Brasil |
title_sort |
Las diatomeas del plancton marino de las costas del Brasil |
author |
Müller-Melchers, F.C. |
author_facet |
Müller-Melchers, F.C. |
author_role |
author |
dc.contributor.author.fl_str_mv |
Müller-Melchers, F.C. |
description |
This paper deals with the Diatomacea from the plankton collected at the coast of the States of São Paulo and Rio Grande do Sul (Brazil), as well as with some specimens gathered along the brazilian coast (up to S.Pedro and S.Paulo Rocks), by Eng. J.Weiher, during his voyage to Europe. Three collections were examined from which 182 Diatomacea were determined as occurring in the Brazilian coast, as many as 126 of tnem being also peculiar to Uruguay coast while 114 were recorded from Argentine w aters. The material from Brazil was compared with that from the coasts of Uruguay and Argentine. The author points out that not all of them are planktonic speoiea since the material collected contained neritic as well as fresh water specimens. Among them there were strayed individuals that reached the marine plankton- Neritic species collected nearer the coast were also present in the material collected by Eng. Weiher, specially when the vessel approached Santos and Rio de Janeiro. This fact confirms the displacement of neritic material towards the open sea. For instance, Hemidiscus ova lis was also found in the open sea, in off shore samples from S.Francisco do Sul. Hemidiscus membranaceus and Asterolampra marylandica, both typically tropical species were found from Rio de Janeiro northwards. Chaetoceros coarctatus, frequent species in the Erazilian samples may be found in Uruguay during the winter months, when it appears all of a sudden and soon disappears. According to the author, it might well be an individual carried by the Erazilian Equatorial Current. These are, therefore, doubts that occur to all who devote themselves to the study of plankton and further investigations are necessary in order to find the answer to these questions. As a conclusion the author reminds that this paper was written with the purpose of serving as a guide for future investigations and it is far from being complete. Attention is called to the fact that it is necessary to carry on with systematic studies with the plankton from the Brazilian coast, including not only the Diatomacea but also all the micro-organisms that live in the marine environment. |
publishDate |
1955 |
dc.date.none.fl_str_mv |
1955-01-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://www.revistas.usp.br/biocean/article/view/27678 10.1590/S0373-55241955000100003 |
url |
https://www.revistas.usp.br/biocean/article/view/27678 |
identifier_str_mv |
10.1590/S0373-55241955000100003 |
dc.language.iso.fl_str_mv |
spa |
language |
spa |
dc.relation.none.fl_str_mv |
https://www.revistas.usp.br/biocean/article/view/27678/29450 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Universidade de São Paulo. Instituto Oceanográfico |
publisher.none.fl_str_mv |
Universidade de São Paulo. Instituto Oceanográfico |
dc.source.none.fl_str_mv |
Boletim do Instituto Oceanográfico; v. 6 n. 1-2 (1955); 93-141 Boletim do Instituto Oceanografico; Vol. 6 No. 1-2 (1955); 93-141 Boletim do Instituto Oceanográfico; Vol. 6 Núm. 1-2 (1955); 93-141 2316-8951 0373-5524 reponame:Boletim do Instituto Oceanográfico instname:Instituto Oceanográfico da Universidade de São Paulo (IOUSP) instacron:USP |
instname_str |
Instituto Oceanográfico da Universidade de São Paulo (IOUSP) |
instacron_str |
USP |
institution |
USP |
reponame_str |
Boletim do Instituto Oceanográfico |
collection |
Boletim do Instituto Oceanográfico |
repository.name.fl_str_mv |
Boletim do Instituto Oceanográfico - Instituto Oceanográfico da Universidade de São Paulo (IOUSP) |
repository.mail.fl_str_mv |
amspires@usp.br |
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1797049929794846720 |