Baixa riqueza zooplanctônica indicando condições adversas de seca e eutrofização em um reservatório no Nordeste do Brasil

Silva, Caio O.; Adjuto, Raphael Neiva Praça; Perbiche‐Neves, Gilmar; Pinheiro, Allysson Pontes; Lacerda, Sírleis Rodrigues

doi:10.1590/1678-4766e2020009

Cited by 1 publication

(2 citation statements)

References 26 publications

(37 reference statements)

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“…Although only the species N. iheringi showed a positive correlation with chlorophyll-a, both species showed a high density of individuals throughout the experiment, demonstrating their high plasticity in a eutrophic environment. This feature has been confirmed in several experiments across Brazil, under eutrophication and drought conditions (Silva and Matsumura-Tundisi, 2005;Landa et al, 2007;Perbiche-Neves et al, 2007;Silva et al, 2020).…”

Section: Discussionmentioning

confidence: 56%

“…The genus Brachionus has been associated with eutrophication in several studies and is considered an indicator of the trophic status of water (Sládeck, 1983;Lougheed and Chow-Fraser, 2002;Vázquez-Sánchez et al, 2014;Silva et al, 2020;Smaoune et al, 2021). Brachionus calyciflorus and B. havanaensis stood out for having high population densities in the present study and have been frequently observed at high densities in other environments Zooplankton community dynamics in response to water trophic state in integrated multitrophic aquaculture with high trophic levels (Branco et al, 2002;Almeida et al, 2009;Pal et al, 2015;Smaoune et al 2021).…”

Section: Discussionmentioning

confidence: 62%

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Zooplankton community dynamics in response to water trophic state in integrated multitrophic aquaculture

Ibrahim

Castilho-Noll

Valenti

2023

BIP

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Integrated multitrophic aquaculture (IMTA) is an alternative means to optimize feed usage in aquaculture which combines species of different trophic levels. The addition of substrate to IMTA has also been used to promote a lower release of phosphorus, thus minimizing eutrophication and impacts of effluents. In these aquaculture systems, the zooplankton community is important because it acts as a link in trophic chains. This study aimed to verify the dynamics and the structure of the zooplankton community in IMTA (tilapia-prawn), in response to trophic conditions in earthen ponds with different substrates. The object of the study was 12 earthen ponds organized in three treatments: no substrate (control), geotextile substrate, and bamboo substrate. Zooplankton samples were taken biweekly through a water bilge pump. Rotifers and microcrustaceans were identified and counted to determine changes in community diversity during the experiment. Eutrophication was determined throughphosphorus and chlorophyll water concentrations. There were no differences in zooplankton communities among treatments, even though increases in levels of eutrophication of the system heavily influenced this community, by altering its diversity and abundance. Small organisms were the most representative ones under polyculture eutrophic conditions.

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Section: Discussionmentioning

confidence: 56%