Impact of harbour, industry and sewage on the phosphorus geochemistry of a subtropical estuary in Brazil

Berbel, Glaúcia Bueno Benedetti; Fávaro, D. I. T.; Braga, Elisabete S.

doi:10.1016/j.marpolbul.2015.02.016

Cited by 58 publications

(23 citation statements)

References 32 publications

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“…Recent work has provided detailed insight into the relationship between reducing conditions and diminished sedimentary P sequestration (Kraal et al, 2015). Previous studies report that P flux between sediment and overlying water may be strongly influenced by physico-chemical conditions, such as temperature, dissolved oxygen (DO) and pH Smith et al, 2006;Lake et al, 2007;Berbel et al, 2015). In particular, oxidation-reduction potential (ORP) may be an especially crucial factor controlling the release of P to the overlying water from sediments.…”

Section: Introductionmentioning

confidence: 99%

Phosphorus release from coastal sediments: Impacts of the oxidation-reduction potential and sulfide

Sheng

Yang

et al. 2016

Marine Pollution Bulletin

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The release of phosphorus (P) from benthic sediments can affect the P content, nutrient status and quality of overlying waters in coastal ecosystem. This study was carried out to investigate the influence of oxidation-reduction potential (ORP) and sulfide on P release from sediments in the coastal estuary of the Yuniao River, China. The results showed that ferric iron-bound P was the main P burial phase in the sediments. The P concentration in overlying water increased with ORP decrease and sulfide increase, displaying a significant linear correlation with the ORP and sulfide concentration. The results indicate that decreased ORP may elevate the zero equilibrium phosphorus concentration, enhancing the capability of P release. And increased sulfide may react or capture reactive iron in sediments, reducing the P adsorption capacity and accelerating P release. Therefore, the control of ORP and sulfide production is important in the sink/source conversion of P in coastal sediments.

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Section: Introductionmentioning

confidence: 99%

Phosphorus release from coastal sediments: Impacts of the oxidation-reduction potential and sulfide

Sheng

Yang

et al. 2016

Marine Pollution Bulletin

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“…Phosphate also decreased from the opening of the Valo in 1852, contrary to N-ammonium, it increased toward the surface sediment in the uppermost layer. This could be the effect of the recent exploitation of phosphogypsum in the upland (Berbel et al, 2015). Silicate concentrations increased soon after the opening of the Valo Grande, signalizing an increase of silicate input.…”

Section: Discussionmentioning

confidence: 99%

Diversions of the Ribeira River Flow and Their Influence on Sediment Supply in the Cananeia-Iguape Estuarine-Lagoonal System (SE Brazil)

et al. 2018

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The Cananéia-Iguape system is a combined estuarine-lagoonal sedimentary system, located along the SE coast of Brazil. It consists of a network of channels and islands oriented mainly parallel to the coast. About 165 years ago, an artificial channel, the Valo Grande, was opened in the northern part of this system to connect a major river of the region, the Ribeira River, to the estuarine-lagoon complex. The Valo Grande was closed with a dam and reopened twice between 1978 and 1995, when it was finally left open. These openings and closures of the Valo Grande had a significant influence on the Cananéia-Iguape system. In this study we present mineralogical, chemical, palaeomagnetic, and geochronological data from a sediment core collected at the southern end of the 50 km long lagoonal system showing how the phases of the opening and closure of the channel through time are expressed in the sedimentary record. Despite the homogeneity of the grain size and magnetic properties throughout the core, significant variations in the mineralogical composition showed the influence of the opening of the channel on the sediment supply. Less mature sediment, with lower quartz and halite and higher kaolinite, brucite, and franklinite, corresponded to periods when the Valo Grande was open. On the other hand, higher abundance of quartz and halite, as well as the disappearance of other detrital minerals, corresponded with periods of absence or closure of the channel, indicating a more sea-influenced depositional setting. This work represented an example of anthropogenic influence in a lagoonal-estuarine sedimentary system, which is a common context along the coast of Brazil.

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“…As a result of this intense industrial and harbour activity, the modifications on sediment dynamics and record are observed in different ways, either on macro constituents (Berbel et al, 2015), metals (Cesar et al, 2006) and different types of hydrocarbons (Martins et al, 2007;Martins et al, 2010Martins et al, , 2011. Analysis of the sedimentary column of estuarine areas may reveal a history of human impacts and their peaks.…”

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confidence: 99%

From sambaquis (shell mounds) to plastic debris: a summary of the geological imprint of human occupation in the coast of São Paulo (Southeast Brazil)

Affonso

Mahiques

Ferreira

et al. 2018

ABEQUA

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In this work, we present a brief revision of the geological evidence of human activities in the coast of São Paulo (Southeast Brazil), from pre-historical times to the present. We analyze case studies in different sectors of the coast, identifying the main historical causes that resulted in environmental changes with their consequent imprint in the sedimentary column. There was a south-to-north trend in the occupation at the colonization period (1500 onwards), essentially determined by differences in the geomorphology of the area. Finally, the accumulation of artificial radionuclides and plastic debris in the sediments is discussed. Keywords: Human occupation; coastline; SE Brazil ResumoNeste trabalho, apresentamos uma breve revisão das evidências geológicas das atividades humanas no litoral de São Paulo (Sudeste do Brasil), desde os tempos pré-históricos até o presente. Analisamos estudos de caso em diferentes setores da costa, identificando as principais causas históricas que resultaram em mudanças ambientais com sua consequente impressão na coluna sedimentar. Havia uma tendência sul-norte na ocupação no período de colonização (1500 em diante), essencialmente determinada por diferenças na geomorfologia da área. Finalmente, o acúmulo de radionuclídeos artificiais e detritos plásticos nos sedimentos é discutido. Palavras-chave: Ocupação humana; litoral; SE do Brasil IntroductionThe definition of the beginning of the Anthropocene in coastal areas is undoubtedly chronologically much younger than the human occupation of the coasts itself (Menzel, 1959;Kaplan, 1980;Stringer, 2000). Actually, the definition of the base of this new epoch is, somehow, still a matter of debate, since the geological/ geochemical evidence of the end of the Holocene can be interpreted in different ways (Steffen et al., 2007;Leorri et al., 2014;Irabien et al., 2015;Zalasiewicz et al., 2015;Waters et al., 2016). It is worth observing that in different coastal and marine areas the evidence goes back to pre-Industrial ages (Crutzen and Steffen, 2003;Martins et al., 2013;Leorri et al., 2014;Irabien et al., 2015).In this paper, we present a brief review of the geological imprint of the human occupation of the coast of São Paulo (Southeast Brazil), an area of a relatively recent historical occupation, caused by different economic activities, but with geological evidence of pre-Columbian settlings. The main aim of this work is to recognize when, why and how the geological records show evidence of the beginning of the Anthropocene in this coastal area. Area of StudyThe area of study corresponds to the coast of São Paulo, a part of the arc-shaped section of the Brazilian margin known as São Paulo Bight (Zembruscki, 1979) (figure 1). This coastal sector has been divided into different forms. According to Muehe (1998), it is divided into two different compartments, the Northern Crystalline Scarps Littoral and the Coastal Plains and Estuaries Littoral, the difference between them being essentially related to the position of the Serra do Mar mou...

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Impact of harbour, industry and sewage on the phosphorus geochemistry of a subtropical estuary in Brazil

Cited by 58 publications

References 32 publications

Phosphorus release from coastal sediments: Impacts of the oxidation-reduction potential and sulfide

Phosphorus release from coastal sediments: Impacts of the oxidation-reduction potential and sulfide

Diversions of the Ribeira River Flow and Their Influence on Sediment Supply in the Cananeia-Iguape Estuarine-Lagoonal System (SE Brazil)

From sambaquis (shell mounds) to plastic debris: a summary of the geological imprint of human occupation in the coast of São Paulo (Southeast Brazil)

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