First assessment of the highly contaminated harbour of Montevideo, Uruguay

Danulat, Eva; Muñiz, Pablo; García‐Alonso, Javier; Yannicelli, Beatriz

doi:10.1016/s0025-326x(02)00086-3

Cited by 73 publications

(40 citation statements)

References 27 publications

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“…This inner part of Montevideo Bay is grossly polluted by Cr, Pb and petroleum hydrocarbons, while the other zones show moderate pollution (VENTURINI et al, 2004). Danulat et al (2002) One of the most important environmental problems in that part of the study area where many industrial facilities are located, is the lack of a sanitation system (Fig. 1).…”

Section: The Study Areamentioning

confidence: 99%

“…Thus, there are several sources of potential environmental degradation to this system. A number of contamination studies have already been carried out in this area, the most comprehensive of which (MOYANO et al, 1993;DANULAT et al 2002;2004a, b;VENTURINI et al, 2004;BURONE et al, 2006;BRUGNOLI et al, 2007) have assessed the environmental degradation of Montevideo Bay and the adjacent coastal zone. These papers have focused on the influence of heavy metals and hydrocarbons on benthic communities in order to demonstrate the negative impact of the industrial operations concerned on the ecosystem's health.…”

Section: Introductionmentioning

confidence: 99%

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Diatoms, protein and carbohydrate sediment content as proxies for coastal eutrophication in Montevideo, Rio de la Plata Estuary, Uruguay

et al. 2011

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A study on sediment surface diatom composition in relation to both protein/carbohydrate content and salinity was carried out in Montevideo Bay and the adjacent coastal zone. Samples were seasonally taken during one year along a human impact gradient, and the trophic conditions were assessed from the biochemical composition of the surface sediment organic matter. The co-occurrence of the marine-brackish (Actinocyclus curvatulus, Actinocyclus gallicus, Coscinodiscus excentricus, Coscinodiscus radiatus, Hyalodiscus subtilis, Paralia sulcata) and freshwater diatom flora (Aulacoseira granulata, Aulacoseira italica, Aulacoseira muzzanensis, Actinocyclus normanii, Amphora copulata, Cyclotella meneghiniana, Nitzschia linearis), suggests myxohaline estuarine conditions in the study area. The sampling stations located within the bay, close to several contamination sources, exhibited hypertrophic conditions as indicated by the highest levels of protein content, but also by the high relative abundances of Actinocyclus normanii and Cyclotella meneghiniana, as both diatom species are very well established cosmopolitan proxies of aquatic degradation. The levels of both protein and carbohydrate content, but also photosynthetic pigments, recorded in the adjacent coastal zone suggest meso-eutrophic conditions as contamination levels from the inner bay might become diluted off shore. Multivariate diatom species-environmental data relationships, indicate that the trophic gradient is hierarchically more important than salinity in explaining the diatom distribution. The present data imply an improvement in our ability of assessing organic contamination in the study area, since both biological and biopolymer variables were introduced for the first time as a tool for assessing the benthic health/degradation in one of the most populated regions of the Río de la Plata. RESUMOFoi realizado um estudo da salinidade e da composição das diatomáceas presentes no sedimento superficial em relação ao conteúdo de proteínas/carboidratos na Baía de Montevidéu e região costeira adjacente. Foram obtidas amostras sazonalmente durante um ano ao longo de um gradiente de impacto ambiental humano, e as condições tróficas foram determinadas através da análise da composição bioquímica da matéria orgânica do sedimento superficial. A coocorrência de espécies de diatomáceas marinhas-salobras, (Actinocyclus curvatulus, Actinocyclus gallicus, Coscinodiscus excentricus, Coscinodiscus radiatus, Hyalodiscus subtilis, Paralia sulcata) e diatomáceas indicadoras de águas doces (Aulacoseira granulata, Aulacoseira italica, Aulacoseira muzzanensis, Actinocyclus normanii, Amphora copulata, Cyclotella meneghiniana, Nitzschia linearis) sugerem condições mixohalinas estuarinas na área de estudo. As estações amostradas dentro da baía, próximas às fontes contaminadoras, apresentam condições hipertróficas apontadas pelos maiores valores de proteínas e pela alta abundância relativa de Actinocyclus normanii e Cyclotella meneghiniana, sendo que ambas espécies são considerad...

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Section: The Study Areamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Diatoms, protein and carbohydrate sediment content as proxies for coastal eutrophication in Montevideo, Rio de la Plata Estuary, Uruguay

et al. 2011

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“…(Caplat et al, 2005). Furthermore, the low hydrodynamism (Danulat et al, 2002) and generally poor oxygenation of the water column (Guerra García and García Gómez, 2005) lead to a limited diversification of benthic communities (Estacio et al, 1997).…”

Section: Resumen: Factores De Stress Que Afectan a Las Comunidades Mamentioning

confidence: 99%

Stressors affecting the macrobenthic community in Rapallo Harbour (Ligurian Sea, Italy)

Harriague¹,

Misic²,

Petrillo³

et al. 2007

Sci. Mar.

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SUMMARY: An annual survey was carried out in Rapallo Harbour (Ligurian Sea, NW Mediterranean) to study the main stressors affecting the macrobenthic communities. The harbour was characterised by a relevant organic enrichment (between 51.9 mg g -1 and 109.6 mg g -1 ), which did not affect the water column oxygenation, and low but detectable heavy-metal contamination (on average Cu=135.0 μg g -1 and V=23.8 μg g -1 ). The seasonal changes in the heavy metal concentrations suggested a significant increase in tourist activities (i.e. boat movements) during summer and autumn. In the inner, more protected sampling site, the harbour structures and the vessel movements increased both organic enrichment and sediment instability, resulting in macrobenthic communities dominated by indicator species associated with these stressors. In addition, during summer and autumn, despite a relevant chlorophyll-a flux to the sediment, the settling material was dominated by phaeopigments and refractory proteins, which reduced its trophic value for benthic consumers. In the outer part of the harbour the main stressor was a polluted freshwater inflow, as indicated by the dominance of indicator species such as Capitella spp. (on average 79.5%), Neanthes caudata, Malacoceros girardi and Diopatra neapolitana.

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“…The highest levels of As in liver of M. platanus and Hg in muscle of M. furnieri, however, were measured in specimens from Montevideo Bay, which is the most contaminated site in the study zone (DANULAT et al, 2002;MUNIZ et al, 2011). Despite these findings, caution must still be exercised, given that the As in liver of M. platanus was only found in one specimen.…”

Section: Discussionmentioning

confidence: 88%

Copper, zinc, mercury and arsenic content in Micropogonias furnieri and Mugil platanus of the Montevideo coastal zone, Río de la Plata

et al. 2016

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57Copper, zinc, mercury and arsenic content in Micropogonias furnieri and Mugil platanus of the Montevideo coastal zone, Río de la Plata Metals (Cu, Zn, Hg) and metalloid (As) concentrations were measured in Micropogonias furnieri and Mugil platanus caught in three areas along the Montevideo coastal zone during winter 2010, spring 2010 and 2011. Compared to previous studies conducted in the zone, both species showed higher (for Cu), similar (for Zn) or lower (for Hg) concentrations. The highest Hg values were found in the M. furnieri of Montevideo bay. There was no spatial variation in Cu, Zn, and As concentrations in muscle, likely due to the high mobility of both species. However, the Cu content in the liver of M. furnieri was higher in fish from the West zone. Cu, Zn and As found in the liver of M. platanus were much higher than in that of M. furnieri. A functional relationship between muscle levels of Zn and Hg and fish length of M. furnieri indicates bioaccumulation of these metals. According to the results, M. furnieri may be used as a temporal bioindicator for Hg, but not as a spatial bioindicator. Mercury levels were below the maximum safety level based on international standard values for human consumption. AbstrAct

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First assessment of the highly contaminated harbour of Montevideo, Uruguay

Cited by 73 publications

References 27 publications

Diatoms, protein and carbohydrate sediment content as proxies for coastal eutrophication in Montevideo, Rio de la Plata Estuary, Uruguay

Diatoms, protein and carbohydrate sediment content as proxies for coastal eutrophication in Montevideo, Rio de la Plata Estuary, Uruguay

Stressors affecting the macrobenthic community in Rapallo Harbour (Ligurian Sea, Italy)

Copper, zinc, mercury and arsenic content in Micropogonias furnieri and Mugil platanus of the Montevideo coastal zone, Río de la Plata

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