Diatom assemblage in a tropical lake of northeastern Brazil

The composition and spatial variation of diatom assemblage in surface sediments of Caçó Lake (shallow, mesotrophic and weakly acid lake - Maranhão State, Brazil) were analyzed in order to know the distribution pattern of the species along the lake during rainy season (April 1999). Four zones were established in the lake based on 21 diatoms species and habitat affinities. The first three zones (prime three meters deep to six meters deep) were marked by the occurrence of Pinnularia gigas, Frustulia rhomboides, Encyonopsis krasskei, Eunotia camelus, E. femoriformis and E. monodon. Zone IV (seven to nine meters deep) was inhabited mainly by Surirella biseriata and Fragilariforma floridana. During the beginning of the rainy season, the diatom assemblage in Caçó Lake was composed mainly by benthic and epiphytic forms that reflected the low lake levels and the abundance of littoral vegetation present in this lake.

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Main Authors: Nascimento,Lilian Rodrigues do, Sifeddine,Abdelfettah, Torgan,Lezilda Carvalho, Albuquerque,Ana Luiza Spadano
Format: Digital revista
Language:English
Published: Instituto de Tecnologia do Paraná - Tecpar 2010
Online Access:http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132010000100030
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spelling oai:scielo:S1516-891320100001000302010-02-25Diatom assemblage in a tropical lake of northeastern BrazilNascimento,Lilian Rodrigues doSifeddine,AbdelfettahTorgan,Lezilda CarvalhoAlbuquerque,Ana Luiza Spadano diatoms shallow lake surface sediments Caçó Lake Brazil The composition and spatial variation of diatom assemblage in surface sediments of Caçó Lake (shallow, mesotrophic and weakly acid lake - Maranhão State, Brazil) were analyzed in order to know the distribution pattern of the species along the lake during rainy season (April 1999). Four zones were established in the lake based on 21 diatoms species and habitat affinities. The first three zones (prime three meters deep to six meters deep) were marked by the occurrence of Pinnularia gigas, Frustulia rhomboides, Encyonopsis krasskei, Eunotia camelus, E. femoriformis and E. monodon. Zone IV (seven to nine meters deep) was inhabited mainly by Surirella biseriata and Fragilariforma floridana. During the beginning of the rainy season, the diatom assemblage in Caçó Lake was composed mainly by benthic and epiphytic forms that reflected the low lake levels and the abundance of littoral vegetation present in this lake.info:eu-repo/semantics/openAccessInstituto de Tecnologia do Paraná - TecparBrazilian Archives of Biology and Technology v.53 n.1 20102010-02-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132010000100030en10.1590/S1516-89132010000100030
institution SCIELO
collection OJS
country Brasil
countrycode BR
component Revista
access En linea
databasecode rev-scielo-br
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region America del Sur
libraryname SciELO
language English
format Digital
author Nascimento,Lilian Rodrigues do
Sifeddine,Abdelfettah
Torgan,Lezilda Carvalho
Albuquerque,Ana Luiza Spadano
spellingShingle Nascimento,Lilian Rodrigues do
Sifeddine,Abdelfettah
Torgan,Lezilda Carvalho
Albuquerque,Ana Luiza Spadano
Diatom assemblage in a tropical lake of northeastern Brazil
author_facet Nascimento,Lilian Rodrigues do
Sifeddine,Abdelfettah
Torgan,Lezilda Carvalho
Albuquerque,Ana Luiza Spadano
author_sort Nascimento,Lilian Rodrigues do
title Diatom assemblage in a tropical lake of northeastern Brazil
title_short Diatom assemblage in a tropical lake of northeastern Brazil
title_full Diatom assemblage in a tropical lake of northeastern Brazil
title_fullStr Diatom assemblage in a tropical lake of northeastern Brazil
title_full_unstemmed Diatom assemblage in a tropical lake of northeastern Brazil
title_sort diatom assemblage in a tropical lake of northeastern brazil
description The composition and spatial variation of diatom assemblage in surface sediments of Caçó Lake (shallow, mesotrophic and weakly acid lake - Maranhão State, Brazil) were analyzed in order to know the distribution pattern of the species along the lake during rainy season (April 1999). Four zones were established in the lake based on 21 diatoms species and habitat affinities. The first three zones (prime three meters deep to six meters deep) were marked by the occurrence of Pinnularia gigas, Frustulia rhomboides, Encyonopsis krasskei, Eunotia camelus, E. femoriformis and E. monodon. Zone IV (seven to nine meters deep) was inhabited mainly by Surirella biseriata and Fragilariforma floridana. During the beginning of the rainy season, the diatom assemblage in Caçó Lake was composed mainly by benthic and epiphytic forms that reflected the low lake levels and the abundance of littoral vegetation present in this lake.
publisher Instituto de Tecnologia do Paraná - Tecpar
publishDate 2010
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132010000100030
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