Search Results - "César C. Martins"

A systematic evaluation of polycyclic aromatic hydrocarbons in South Atlantic subtropical mangrove wetlands under a coastal zone development scenario by Garcia, Marina Reback, Martins, César C.

“…Mangrove forests worldwide are threatened environments considered vulnerable to chronic contamination by hydrophobic contaminants such as polycyclic aromatic…”
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Insights about sources, distribution, and degradation of sewage and biogenic molecular markers in surficial sediments and suspended particulate matter from a human-impacted subtropical estuary by Cabral, Ana Caroline, Martins, César C.

“…The molecular markers sterols and linear alkylbenzenes (LABs) were analyzed in the surficial sediments and suspended particulate matter (SPM) of a subtropical…”
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Polycyclic aromatic hydrocarbons (PAHs) in sediments of the amazon coast: Evidence for localized sources in contrast to massive regional biomass burning by Pichler, Nikola, Maria de Souza, Fernanda, Ferreira dos Santos, Valdenira, Martins, César C.

“…The Amazon coastal zone has become contaminated with organic pollutants, such as polycyclic aromatic hydrocarbons (PAHs). However, information about their…”
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Polychlorinated biphenyls (PCBs) and organochlorine pesticides (OCPs) in sediments from an urban- and industrial-impacted subtropical estuary (Babitonga Bay, Brazil) by Rizzi, Juliane, Taniguchi, Satie, Martins, César C.

“…Babitonga Bay is a large estuary, which has been under pressure from anthropogenic activities coexisting with a natural area of Atlantic rainforest and…”
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Low levels of persistent organic pollutants in sediments of the Doce River mouth, South Atlantic, before the Fundão dam failure by de Souza, Amanda Câmara, Cabral, Ana Caroline, da Silva, Josilene, Neto, Renato Rodrigues, Martins, César C.

“…The Doce River mouth (DRM) was severely impacted by the rupture of the Fundão Dam in 2015, considered the greatest Brazilian environmental tragedy in terms of…”
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An integrated evaluation of molecular marker indices and linear alkylbenzenes (LABs) to measure sewage input in a subtropical estuary (Babitonga Bay, Brazil) by Martins, César C., Cabral, Ana Caroline, Barbosa-Cintra, Scheyla C.T., Dauner, Ana Lúcia L., Souza, Fernanda M.

“…Babitonga Bay is a South Atlantic estuary with significant ecological function; it is part of the last remaining areas of mangrove communities in the Southern…”
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An integrated evaluation of some faecal indicator bacteria (FIB) and chemical markers as potential tools for monitoring sewage contamination in subtropical estuaries by Cabral, Ana Caroline, Stark, Jonathan S., Kolm, Hedda E., Martins, César C.

“…Sewage input and the relationship between chemical markers (linear alkylbenzenes and coprostanol) and fecal indicator bacteria (FIB, Escherichia coli and…”
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Unraveling sources of hydrocarbons in subtropical estuaries with distinct degrees of protection in the Southwestern Atlantic Ocean, Brazil by Martins, César C., Moreira, Lucas Buruaem, Sutilli, Marina, de Souza Abessa, Denis Moledo

“…Sedimentary aliphatic hydrocarbons and polycyclic aromatic hydrocarbons (PAHs) were studied in subtropical estuaries with distinct degrees of legal protection,…”
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Earthquake, floods and changing land use history: A 200-year overview of environmental changes in Selenga River basin as indicated by n-alkanes and related proxies in sediments from shallow lakes by C. Martins, César, Adams, Jennifer K., Yang, Handong, Shchetnikov, Alexander A., Di Domenico, Maikon, Rose, Neil L., Mackay, Anson W.

“…The Selenga River basin, located in southern Siberia, is an important component of the Lake Baikal ecosystem, and comprises approximately 80 % of the Baikal…”
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One century of historical deposition and flux of hydrocarbons in a sediment core from a South Atlantic RAMSAR subtropical estuary by Sutilli, Marina, Combi, Tatiane, Garcia, Marina Reback Domingues, Martins, César C.

“…Levels and fluxes of Polycyclic aromatic hydrocarbons (PAHs) and aliphatic hydrocarbons (AHs), including n-alkanes and petroleum biomarkers (PBMs), were…”
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Historical records and spatial distribution of high hazard PCBs levels in sediments around a large South American industrial coastal area (Santos Estuary, Brazil) by de Souza, Amanda Câmara, Taniguchi, Satie, Lopes Figueira, Rubens Cesar, Montone, Rosalinda Carmela, Caruso Bícego, Márcia, Martins, César C.

“…•PCBs in dated sediments provide evidence of high hazard historic contamination.•Levels started to increase in 1960 following emissions in Brazil and…”
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Tracing sewage contamination in a South Atlantic UNESCO Natural Heritage estuary using sedimentary linear alkylbenzenes and their diagnostic ratios by Gurgatz, Bruno Martins, de Oliveira, Vinícius Rogel Paulino, de Mahiques, Michel Michaelovitch, Melegari, Silvia Pedroso, Martins, César C.

“…The Paranaguá Estuarine System (PES) is an extensive subtropical estuarine system on the Southern Brazilian coast. It encompasses one of the last preserved…”
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Tracking the historical sewage input in South American subtropical estuarine systems based on faecal sterols and bulk organic matter stable isotopes (δ13C and δ15N) by Cabral, Ana Caroline, Wilhelm, Marines Maria, Figueira, Rubens C.L., Martins, César C.

“…Faecal sterols and stable isotopes (δ13C and δ15N) from bulk organic matter (OM) were analysed in three sedimentary cores collected in two subtropical bays…”
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Molecular characterisation of anthropogenic sources of sedimentary organic matter from Potter Cove, King George Island, Antarctica by Dauner, Ana Lúcia L., Hernández, Edgardo A., MacCormack, Walter P., Martins, César C.

“…Although relatively recent, human activities in Antarctica, such as growing tourism, fishery activities, and scientific operations, have affected some areas of…”
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Sedimentary biomarkers along a contamination gradient in a human-impacted sub-estuary in Southern Brazil: A multi-parameter approach based on spatial and seasonal variability by de Abreu-Mota, Michelle Alves, de Moura Barboza, Carlos Alberto, Bícego, Márcia C., Martins, César C.

“…•New organic geochemistry insights from a large South American estuary.•Composition and seasonal variations of sedimentary organic matter were studied.•PAHs…”
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Occurrence of halogenated organic contaminants in estuarine sediments from a biosphere reserve in Southern Atlantic by Souza, Amanda C., Combi, Tatiane, da Silva, Josilene, Martins, César C.

“…The occurrence, distribution, and the total mass of polychlorinated biphenyls (PCBs) and organochlorine pesticides (OCPs) were studied in surficial sediments…”
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One century of variations in organic matter inputs in marine Antarctic sediments: Insights from bulk and isotopic data by Bisch, Viviane K., Dauner, Ana Lúcia L., Taniguchi, Satie, Lourenço, Rafael A., Bícego, Marcia C., Montone, Rosalinda C., Martins, César C.

“…The elemental composition and carbon and nitrogen stable isotopes of sedimentary organic matter (OM) are vital geochemical tools for understanding…”
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Petroleum biomarkers as tracers of low-level chronic oil contamination of coastal environments: A systematic approach in a subtropical mangrove by Garcia, Marina Reback, Cattani, André Pereira, da Cunha Lana, Paulo, Figueira, Rubens César Lopes, Martins, César C.

“…Petroleum biomarkers (hopanes, terpanes and steranes) are frequently assessed in estuarine sediments as tracers of oil input. In order to compare distinct…”
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Exploratory evaluation of iron and its speciation in surface waters of Admiralty Bay, King George Island, Antarctica by SIERPINSKI, SHEISA F.D., BAQUER, LUIS MIGUEL LAGLERA, MARTINS, CÉSAR C., GRASSI, MARCO TADEU

“…Abstract The determination of dissolved iron concentrations and speciation was conducted for the first time in surface seawater coastline samples collected…”
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Depositional input of hydrocarbons recorded in sedimentary cores from Deception and Penguin Islands (South Shetland Archipelago, Antarctica) by Sutilli, Marina, Ferreira, Paulo A.L., Figueira, Rubens C.L., Martins, César C.

“…Polycyclic aromatic hydrocarbons (PAHs) and aliphatic hydrocarbons (AHs), including petroleum biomarkers, were studied in four sediment cores collected around…”
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