The effect of urban sewage on benthic macrofauna: A multiple spatial scale approach

Souza, Fernanda Maria de; Brauko, Kalina M.; Lana, Paulo da Cunha; Muñiz, Pablo; Camargo, Maurício G.

doi:10.1016/j.marpolbul.2012.10.021

Cited by 43 publications

(23 citation statements)

References 27 publications

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“…This pattern of few species composing the majority of the benthic assemblages was also observed at other urbanized estuaries in southern Brazil, such as the Patos Lagoon estuary (ROSA; BEMVENUTI, 2006) and at the Paranaguá estuarine complex (SOUZA et al, 2013). Guanabara Bay Table 4.…”

Section: Discussionsupporting

confidence: 63%

Spatiotemporal distribution of the benthic macrofauna in an urbanized subtropical estuary: environmental variations and anthropogenic impacts

Mattos

Almeida

2016

Braz. j. oceanogr.

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This study was conducted in the Itajaí-Açu river lower estuary in Southern Brazil, in which we aimed to: (1) analyze spatiotemporal variations on the macrofauna; (2) search for relationships between environmental variables and the assembly and (3) evaluate the influence of capital dredging upon the assembly. Two hundred twenty eight samples were performed in four stations, two of which affected by dredging. Sediment (sand, silt and clay, organic matter and carbonate) and water column´s variables (temperature, salinity, pH, dissolved oxygen, and turbidity) were also assessed. We applied Principal Component Analysis for environmental variables and Hierarchical Clustering for biotic data. Correlations between environmental and biotic matrices were tested by Canonical Analysis of Principal Coordinates. Spatiotemporal variations in the assembly were tested by Permutational Multivariate Analysis of Variance. From the 21.839 organisms sampled, 97% was represented by the gastropod Heleobia australis. Despite the influence of the river discharge on the ecosystem, dredging was deleterious to the assembly, favoring opportunistic organisms such as H. australis.

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Section: Discussionsupporting

confidence: 63%

Spatiotemporal distribution of the benthic macrofauna in an urbanized subtropical estuary: environmental variations and anthropogenic impacts

Mattos

Almeida

2016

Braz. j. oceanogr.

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“…The WFD and WSFD promoted the use of, and search for, new ecological quality indicators for comparative purposes (Borja and Muxika, 2005;Hering et al, 2006;Borja et al, 2009bBorja et al, , 2012. Following the publication of these directives, many studies have compared various benthic indices aimed at finding the method most suitable for the EcoQS assessment of a particular marine environment (e.g., Muxika et al, 2007;Simonini et al, 2009;Simboura and Argyrou, 2010;Souza et al, 2013;Simboura et al, 2014;Hutton et al, 2015;Brauko et al, 2015). The most commonly used faunal indices are the AMBI (Borja et al, 2000) and Bentix (Simboura and Zenetos, 2002) indices, which categorize species into ecological groups based on their sensitivity or tolerance to pollution, following Pearson and Rosenberg's (1978) model of species response to organic enrichment.…”

Section: Introductionmentioning

confidence: 99%

Ecological quality assessment in the Eastern Mediterranean combining live and dead molluscan assemblages

Leshno

Benjamini

Edelman‐Furstenberg

2016

Marine Pollution Bulletin

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“…culveri is tolerant to low oxygen levels, and often a numerically dominant species in organically enriched locations (Souza et al 2013). High levels of basal antioxidant enzymes, such as that observed in CAT (see supplementary material), could be an adaptive response to this highly variable environment as also a response to the constant oxygenation employed during the bioassay.…”

Section: Discussionmentioning

confidence: 99%

“…Although sewage discharge represent the main source of contamination in the Bay (Souza et al 2013), the Paranaguá harbor hosts the Transportation Terminal of Paranaguá (TEPAR), which operates refining, storing and transporting of oil and its derivatives (Egres et al 2012 fractions from secondary crude oil processing. MDO is used by small and medium vessels as also within the auxiliary engines of large ships (Leite et al 2014).…”

Section: Sampling and Bioassay Conditionsmentioning

confidence: 99%

Oxidative stress in two tropical species after exposure to diesel oil

Sardi

Sandrini-Neto

Pereira

et al. 2016

Environ Sci Pollut Res

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Recent offshore petroleum exploration has increased the risks of oil spills worldwide. We investigated biomarker responses to diesel oil exposure in two tropical and subtropical species, the clam Anomalocardia flexuosa and the polychaete Laeonereis culveri. Animals were exposed to oil-spiked sediment at two different concentrations (0.5 L m -2 and 1.0 L m -2 ). Activities of antioxidant enzymes catalase (CAT), superoxide dismutase (SOD) and glutathione peroxidase (GPx); glutathione transferase (GST), and lipid peroxides (LPO) were assessed in bivalve digestive glands and polychaete whole-body homogenates at 36 h and 60 h of exposure.Significant variation in enzymatic antioxidant activity depended on the sampling time after exposure. No similar response patterns, either increases or decreases, were detected for the two target species, and biomarker responses were species-specific. L. culveri showed clearer patterns in its antioxidant response and should be prioritized over other species in biomonitoring studies involving oil exposure. Understanding the temporal variability of these biomarkers is a necessary action before implementing them as indicators measures in oil contamination biomonitoring programs. Our results provide a better understanding of biomarker responses in subtropical species, evidencing their potential use as sentinels of oil contamination.

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The effect of urban sewage on benthic macrofauna: A multiple spatial scale approach

Cited by 43 publications

References 27 publications

Spatiotemporal distribution of the benthic macrofauna in an urbanized subtropical estuary: environmental variations and anthropogenic impacts

Spatiotemporal distribution of the benthic macrofauna in an urbanized subtropical estuary: environmental variations and anthropogenic impacts

Ecological quality assessment in the Eastern Mediterranean combining live and dead molluscan assemblages

Oxidative stress in two tropical species after exposure to diesel oil

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