Ecosystem health of Montevideo coastal zone: A multi approach using some different benthic indicators to improve a ten-year-ago assessment

Muñiz, Pablo; Venturini, Natalia; Hutton, M.; Kandratavicius, Noelia; Pita, Ana Laura; Brugnoli, Ernesto; Burone, Letícia; García-Rodríguez, Felipe

doi:10.1016/j.seares.2010.07.001

Cited by 56 publications

(37 citation statements)

References 58 publications

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“…We observed important differences with regard to MUNIZ et al (2004) (i.e. a decrease from average values of 85 to 51 mg g -1 ), which is in close agreement with other studies (GARCÍA-RODRÍGUEZ et al, 2010;MUNIZ et al, 2011). Such studies attribute the decrease in Pb to the use of Pb-free fuel.…”

Section: Discussionsupporting

confidence: 91%

Integrated assessment of contaminants and monitoring of an urbanized temperate harbor (Montevideo, Uruguay): a 12-year comparison

et al. 2015

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Integrated assessment of contaminants and monitoring of an urbanized temperate harbor (Montevideo, Uruguay): a 12-year comparisonSituated opposite the Freshwater Front, Montevideo city with its more than 1.5 million inhabitants encircles Montevideo Bay, where one of the most active and polluted harbors in South America is located. Faecal sterols, trace metals, organochlorine compounds and petroleum derivatives in the sediments of Montevideo Harbor were evaluated and their spatial distribution inside the harbor as well as in the input of two main tributary streams analyzed. Specifically for the harbor sites, a temporal comparison of metal and hydrocarbons was made with previous measurements taken 12 years ago. Clear changes were observed at these sites. The concentration of metals such as Pb, Cr and Zn have diminished, while aliphatic hydrocarbons have increased their values at almost all of the stations studied. Differences were observed between summer and winter suggesting sedimentation, input or hydrodynamic changes in the area. These results help one to understand the present situation and develop the management measures needed to improve the environmental quality of the harbor and bay. AbstrAct

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Section: Discussionsupporting

confidence: 91%

Integrated assessment of contaminants and monitoring of an urbanized temperate harbor (Montevideo, Uruguay): a 12-year comparison

et al. 2015

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“…The spatial distribution pattern of sediment geochemical variables in the study area closely agrees with previous assessments (Burone et al 2006;Brugnoli et al 2007;García-Rodríguez et al 2011;Muniz et al 2011Muniz et al , 2004aMuniz et al , 2004bVenturini et al 2012Venturini et al , 2004. That is, Montevideo Bay is a polluted system that displays higher values of sediment geochemical variables than those of the coastal zone.…”

Section: Discussionsupporting

confidence: 89%

Warm-phase ENSO events modulate the continental freshwater input and the trophic state of sediments in a large South American estuary

García-Rodríguez

Brugnoli

Muñiz

et al. 2014

Mar. Freshwater Res.

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Abstract. We studied the changes in geochemical variables in the middle section of Río de la Plata estuary during the 2009-2010 El Niño-Southern Oscillation (ENSO) event. Protein, organic matter, chlorophyll-a and phaeopigment content of surface sediments were significantly correlated with the increased continental freshwater input associated with high total monthly rainfall. During the warm-phase ENSO event, river flow was 5-fold larger than average historical levels, which led to a steady decrease in salinity values and the highest levels of geochemical variables. The evidence presented herein suggests that warm-phase ENSO events increase the trophic state of the sediments because of the increased freshwater input. Thus, our findings may be useful to anticipate potential eutrophication episodes in the study area.

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“…Nevertheless, the use of different indices is always advisable in order to obtain a better evaluation of the benthic community's health (MUNIZ et al, 2011;LABRUNE et al, 2006), consequently, it is necessary to include different indices in the assessment schemes to make sure that the natural variability can be detected and considered.…”

Section: Spatial and Temporal Patterns Of Biotic Indicesmentioning

confidence: 99%

“…BORJA et al (2004) andMUXIKA et al (2005) state that AMBI was validated in areas involving a large range of impact sources (domestic waste, heavy metals, submarine outfalls, drilling cuts with ester-based mud, industrial and mining waste). Generally, this was done in accordance with the community structure measurements and multivariate methods used in assessing anthropogenic impacts (MUNIZ et al, 2005(MUNIZ et al, , 2011PRATO et al, 2009). A few years later, the same research group proposed a new multivariate index combining AMBI with species richness (S) and community diversity (H'): M-AMBI (MUXIKA et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

Performance comparison of biotic indices measuring the ecological status base on soft-bottom macroinvertebrates: a study along the shallow Gomishan lagoon (Southeast Caspian Sea)

et al. 2015

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This paper aims to test the suitability of some biotic indices for their application in Southeast Caspian Sea. For this purpose, the ecological quality of the Gomishan lagoon was assessed using three biotic indices (AMBI, BENTIX, BOPA) during summer and autumn 2010. The results from the application of the biotic indices do not highlight a clear distinction between the stations. The results show that two of the indices (AMBI and BENTIX) are very close in terms of diagnosis (good and high) and seem to generally perform better than BOPA. In addition, Principal Component Analysis (PCA) based on abiotic parameters showed clear spatial and temporal differences in environmental variables. However, at this shallow sites with low human pressure and high water residence times, such benthic community composition can be associated with physical stress due to salinity increase and to changes in environmental characteristics, triggered by conventional seasonal variations. Natural variability of transitional waters is a crucial factor for a correct evaluation of the ecological condition of macroinvertebrate communities across the lagoonal system. AbstrAct

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Ecosystem health of Montevideo coastal zone: A multi approach using some different benthic indicators to improve a ten-year-ago assessment

Cited by 56 publications

References 58 publications

Integrated assessment of contaminants and monitoring of an urbanized temperate harbor (Montevideo, Uruguay): a 12-year comparison

Integrated assessment of contaminants and monitoring of an urbanized temperate harbor (Montevideo, Uruguay): a 12-year comparison

Warm-phase ENSO events modulate the continental freshwater input and the trophic state of sediments in a large South American estuary

Performance comparison of biotic indices measuring the ecological status base on soft-bottom macroinvertebrates: a study along the shallow Gomishan lagoon (Southeast Caspian Sea)

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