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Abundance and diversity patterns of the sessile macrobenthic community associated with environmental gradients in Vitória Harbor, southeastern Brazil Rev. Bras. Zool.
Zalmon,Ilana Rosental; Krohling,Werther; Ferreira,Carlos Eduardo Leite.
Harbor terminals and urban sewage effluents affect the composition and distribution of epibenthic organisms. In this study, we hypothesized that the benthic community structure at the Vitoria Harbor changes spatially in a ~3 km scale, and that these changes are associated with environmental gradients resulting from point-source sewage and differences in the physical and chemical parameters of the water along the harbor access channel. Four sites, internal (PI), intermediate-internal (PMI), intermediate-external (PME) and external (PE), varying from 0.5 to 4.0 km off the harbor, were sampled on five quadrats at six sampling dates (N = 30 per site). The epibenthic community on the shallow sublitoral rocky shore was sampled fortnightly from December 2005 to...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Epibenthic community; Environmental gradient; Estuary; Sedimentation.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702011000500012
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Comparative evaluation of fish assemblages census on an artificial reef Zoologia
Brotto,Daniel S.; Krohling,Werther; Zalmon,Ilana R..
One of the main issues regarding artificial reef fish evaluation is the performance of an efficient visual census sampling. An experimental artificial reef made of four different types of concrete modules was implanted on the north coast of Rio de Janeiro (21º29'S, 41º00W). Two interval-sampling periods using a visual census method were performed in the summer of 2003 (N = 6) and 2004 (N = 6), weekly and daily, respectively. The longer interval-sampling period showed twice of species with eight exclusive ones. Total fish abundance was higher during the shorter interval-sampling period, due to the presence of large shoals of Chloroscombrus chrysurus (Linnaeus, 1766) and Haemulon aurolineatum (Cuvier, 1829) especially at the complex modules. Fish abundance...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Experimental reef complex; Rio de Janeiro; Sampling period; Underwater visual census.
Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752007000400037
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Composição e estrutura da comunidade de peixes de uma praia arenosa da Ilha do Frade, Vitória, Espírito Santo Iheringia, Sér. Zool.
Araujo,Ciro C. V. de; Rosa,Daniel de M.; Fernandes,Joelson M.; Ripoli,Leandro V.; Krohling,Werther.
A ictiofauna de uma praia arenosa da Ilha do Frade, Vitória, ES, foi amostrada mensalmente entre maio/2004 e abril/2005. Foram coletados 2.689 indivíduos de 26 famílias e 45 espécies de Teleostei, a maioria em estágio juvenil. A família Sciaenidae apresentou o maior número de espécies. As capturas mensais evidenciaram que as espécies numericamente mais importantes foram: Lutjanus synagris (Linnaeus, 1758), Archosargus rhomboidalis (Linnaeus, 1758), Eucinostomus lefroyi (Goode, 1874) e Paralonchurus brasiliensis (Steindachner, 1875); com relação ao peso, Cyclichthys spinosus (Linnaeus, 1758), A. rhomboidalis, E. lefroyi e L. synagris dominaram. O número de indivíduos e a biomassa variaram significativamente (p<0,01) entre os meses. O índice de...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ictiofauna; Praia arenosa; Comunidade; Vitória; Espírito Santo.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212008000100016
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Epibenthic colonization on an artificial reef in a stressed environment off the north coast of the Rio de Janeiro State, Brazil BABT
Krohling,Werther; Zalmon,Ilana Rosental.
The influence of sedimentation and turbidity caused by the pluviometric precipitation and by the Paraiba do Sul River during the summer was investigated on an artificial reef along the north coast of Rio de Janeiro, Brazil. Four recruitment and four cumulative plates were removed monthly (January 2002 to February 2003) from the external surface of the concrete reef modules. Empty space was not a limiting factor the recruitment. Turnover rate and structural difference index were higher in the first months and reflected low change in the species dominance during almost the entire study period. The high correlation between the precipitation and the empty space suggested that rain influence the recruitment and the succession. The recruitment was possible...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Recruitment; Succession; Benthic community structure; Natural disturbance.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132008000100025
Registros recuperados: 4
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