Plankton and water quality variability in an estuary before and after the shrimp farming effluents: possible impacts and regeneration
Abstract Water quality, chlorophyll a, phytoplankton, proto and mezo-zooplankton abundance were spatiotemporally evaluated in an estuary receiving effluents from a Pacific white shrimp Litopenaeus vannamei farm in Patos Lagoon estuary, Southern Brazil. Samples were taken before (BD) and; 1 day (1 PD...
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doaj-faefbff7e0a644a7804ee87eaa676b832020-11-25T02:44:22ZengUniversidade de São PauloBrazilian Journal of Oceanography 1982-436X65349550810.1590/s1679-87592017143406503S1679-87592017000300495Plankton and water quality variability in an estuary before and after the shrimp farming effluents: possible impacts and regenerationWilliam BauerPaulo Cesar AbreuLuis Henrique PoerschAbstract Water quality, chlorophyll a, phytoplankton, proto and mezo-zooplankton abundance were spatiotemporally evaluated in an estuary receiving effluents from a Pacific white shrimp Litopenaeus vannamei farm in Patos Lagoon estuary, Southern Brazil. Samples were taken before (BD) and; 1 day (1 PD) 5 days (5 PD), 10 days (10 PD), 20 days (20 PD) and 30 days (30 PD) after the effluents discharge. Some water quality parameters were affected by the effluents discharge; however, these changes were restricted to a distance of 20 m from the effluent discharge channel for a period of 5 days. The microbial community was dominated by chlorophyceae, followed by diatoms, cyanobacteria and ciliates. There was an increase in the abundance of different groups on the 1 PD sampling compared to BD. The zooplankton abundance was low in practically all sites, except for 30 PD sampling. The meso-zooplanktonic organisms were represented by copepods, mostly Acartia tonsa. Despite some effects on water quality and phytoplankton and protozooplankton abundance until 5 PD sampling, these alterations dissipated in a short period of time. We conclude that the environment quickly assimilated the effluents discharge, and the water quality parameters remained within the limits stipulated by standard guidelines.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-87592017000300495&lng=en&tlng=enAquiculturaImpacto AmbientalPlânctonEfluente |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
William Bauer Paulo Cesar Abreu Luis Henrique Poersch |
spellingShingle |
William Bauer Paulo Cesar Abreu Luis Henrique Poersch Plankton and water quality variability in an estuary before and after the shrimp farming effluents: possible impacts and regeneration Brazilian Journal of Oceanography Aquicultura Impacto Ambiental Plâncton Efluente |
author_facet |
William Bauer Paulo Cesar Abreu Luis Henrique Poersch |
author_sort |
William Bauer |
title |
Plankton and water quality variability in an estuary before and after the shrimp farming effluents: possible impacts and regeneration |
title_short |
Plankton and water quality variability in an estuary before and after the shrimp farming effluents: possible impacts and regeneration |
title_full |
Plankton and water quality variability in an estuary before and after the shrimp farming effluents: possible impacts and regeneration |
title_fullStr |
Plankton and water quality variability in an estuary before and after the shrimp farming effluents: possible impacts and regeneration |
title_full_unstemmed |
Plankton and water quality variability in an estuary before and after the shrimp farming effluents: possible impacts and regeneration |
title_sort |
plankton and water quality variability in an estuary before and after the shrimp farming effluents: possible impacts and regeneration |
publisher |
Universidade de São Paulo |
series |
Brazilian Journal of Oceanography |
issn |
1982-436X |
description |
Abstract Water quality, chlorophyll a, phytoplankton, proto and mezo-zooplankton abundance were spatiotemporally evaluated in an estuary receiving effluents from a Pacific white shrimp Litopenaeus vannamei farm in Patos Lagoon estuary, Southern Brazil. Samples were taken before (BD) and; 1 day (1 PD) 5 days (5 PD), 10 days (10 PD), 20 days (20 PD) and 30 days (30 PD) after the effluents discharge. Some water quality parameters were affected by the effluents discharge; however, these changes were restricted to a distance of 20 m from the effluent discharge channel for a period of 5 days. The microbial community was dominated by chlorophyceae, followed by diatoms, cyanobacteria and ciliates. There was an increase in the abundance of different groups on the 1 PD sampling compared to BD. The zooplankton abundance was low in practically all sites, except for 30 PD sampling. The meso-zooplanktonic organisms were represented by copepods, mostly Acartia tonsa. Despite some effects on water quality and phytoplankton and protozooplankton abundance until 5 PD sampling, these alterations dissipated in a short period of time. We conclude that the environment quickly assimilated the effluents discharge, and the water quality parameters remained within the limits stipulated by standard guidelines. |
topic |
Aquicultura Impacto Ambiental Plâncton Efluente |
url |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-87592017000300495&lng=en&tlng=en |
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