Potential Use of Cyclopoida (Crustacea, Copepoda) as Trophic State Indicators in Tropical Reservoirs

Silva, Wiiliam Marcos da

doi:10.4257/oeco.2011.1503.06

Cited by 16 publications

(23 citation statements)

References 19 publications

(17 reference statements)

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“…In the Jacareí reservoir, on the other hand, there are lower levels of dominance and higher values of evenness and Shannon-Wiener index, indicating a less disturbed body of water, possibly due to the greater volume of water in this reservoir .The values found for the richness of species in the zooplankton communities of the Jaguari and Jacareí reservoirs were low compared to those reported by Silva (2011) whereas the evenness of species populations found in this study was high compared to those obtained by the same author.…”

Section: Discussioncontrasting

confidence: 49%

“…One generalization usually made in relation to zooplankton size structure and trophic state of water bodies is that species with larger bodies such as Calanoida (predominantly herbivores), occur primarily in oligotrophic environments, where there is a predominance of nanophytoplankton (Hillbricht-Ilkowska 1977, Echevarria et al 1990, whereas the Cyclopoida occur at higher density in mesoeutrophic environments, owing to their ability to handle larger food particles (Pace 1986, Santos-Wisniewski & Rocha 2007. Water quality in tropical reservoirs can also be indicated by using specific species of cyclopoid as indicators (Silva, 2011).…”

Section: Introductionmentioning

confidence: 99%

“…Such an alteration in the trophic state of a water body usually causes profound changes in the structure of plankton communities , which is the reason why the interpretation of biological events in these populations and qualitative and quantitative analysis of their structures allows the degree of deterioration of the water body as a whole to be assessed (Pinto-Coelho et al 2005, Silva 2011.…”

Section: Introductionmentioning

confidence: 99%

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Zooplankton communities as eutrophication bioindicators in tropical reservoirs

2014

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Eutrophication is a process characterized by an increase in the aquatic system productivity, which causes profound changes in the structure of its communities. Owing to the high environmental sensitivity of planktonic species, the study of their communities can indicate the deterioration of the environment. The Jaguari and Jacareí reservoirs are part of the Cantareira System, supplying water to Sã o Paulo inhabitants and that has been affected by several forms of continuous human interference.Here we analyze some properties of the zooplankton community as bioindicators of eutrophication and water quality change. In situ physical and chemical measurements were carried out, water was collected for analysis and quantitative zooplankton samples were taken at eight sites in the two reservoirs, in both seasons, dry and rainy. Species were identified and their numerical abundances and biomasses were determined and used to estimate two biological indices. The overall trophic state and zooplankton structure, the Calanoida/Cyclopoida ratio and the k-dominance curves were associated with the disturbance levels, mainly represented by nutrient river inputs and by water level fluctuations. The Jaguari Reservoir was more eutrophicated than the Jacareí Reservoir, as evidenced by the obtained indices values. The zooplankton community properties used as indicators of the reservoir trophic state were useful monitoring tools. Keywords: zooplankton, ABC curves, Calanoida/Cyclopoida ratio, Cantareira System, environmental impact.GAZONATO NETO, A.J., SILVA, L.C., SAGGIO, A.A., ROCHA, O Comunidades zooplanctônicas como bioindicadoras de eutrofização em reservatórios tropicais.http://dx.doi. org/10.1590/1676-06032014001814Resumo: A eutrofização é um processo caracterizado pelo aumento da produtividade do sistema aquá tico, o que provoca profundas alteraçõ es na estrutura de suas comunidades. Devido à alta sensibilidade ambiental das espécies planctô nicas, o estudo de suas comunidades pode indicar a deterioraçã o do ambiente. Os reservató rios Jaguari e Jacareí sã o parte do Sistema Cantareira, que fornece á gua para os habitantes de Sã o Paulo e que tem sido afetado por diversas formas de contínua interferência humana. Neste trabalho vamos analisar algumas propriedades da comunidade zooplanctô nica como bioindicadoras de eutrofizaçã o e alteraçã o da qualidade da á gua. Foram realizadas mediçõ es in situ de variá veis físicas e químicas, amostras de á gua foram coletadas para aná lises e amostras quantitativas de zooplâ ncton foram coletadas em oito localidades compreendendo os dois reservató rios, em duas estaçõ es, seca e chuvosa. As espécies foram identificadas e suas abundâ ncias numéricas e biomassas foram determinadas e utilizadas para estimar dois índices bioló gicos. O estado tró fico e a estrututa do zooplâ ncton, a relaçã o Calanoida / Cyclopoida e as curvas de k-dominâ ncia foram associados com os níveis de perturbaçã o, representada principalmente pela entrada de nutrientes transportados pelo rio e pelas flutuaçõ ...

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Section: Discussioncontrasting

confidence: 49%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Zooplankton communities as eutrophication bioindicators in tropical reservoirs

2014

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“…In the Americas this species has been recorded as an introduced species (Reid and Pinto-Coelho, 1994;Matsumura-Tundisi and Silva, 2002;Suarez-Moralez et al, 1999;Hribar and Reid, 2008). In Brazil, M. ogunnus has been recorded in the Paraná River basin in hydroelectric plant reservoirs and in flood plain areas (Reid and Pinto-Coelho, 1994;Matsumura-Tundisi and Silva, 2002;Lansac-Tôha et al, 2002;Silva, 2011), in the Southeast Atlantic Coast basin in natural lakes of the Rio Doce Valley (Peixoto, et al, 2010) and in the Northeast Atlantic Coast basin in urban reservoirs (Cardôso et al, 2013). The present work records the occurrence of M. ogunnus for the first time in the Amazon River basin.…”

Section: (With 2 Figures)mentioning

confidence: 99%

“…Figure 1 shows the Brazilian territory with the main hydrographic river basins and the location of M. ogunnus in each basin. In São Paulo State, where introduction occurred towards the end of the 1980s, this species is now widespread in the reservoirs of the Paraná River basin (Matsumura-Tundisi and Silva, 2002) with high abundance and dominance in mesotrophic and eutrophic systems (Silva, 2011). In the Amazonian Jamari River, the sample point where M. ogunnus was found is located upstream of the Samuel Reservoir, where the water presents meso-eutrophic conditions (Matsumura-Tundisi et al, 1991;Nascimento, 2006).…”

Section: (With 2 Figures)mentioning

confidence: 99%