Levels of metals, arsenic and phosphorus in sediments from two sectors of a Brazilian Marine Protected Area (Tupinambás Ecological Station)

Hoff, Natasha Travenisk; Figueira, Rubens César Lopes; Abessa, Denis Moledo de Souza

doi:10.1016/j.marpolbul.2014.10.044

Cited by 22 publications

(12 citation statements)

References 27 publications

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“…The method described by Aspila et al (1976) was carried out in order to obtain the available phosphorus concentration. An estimate of total phosphorus was made with partial acid digestion, as for metal determination, as done by Taylor and Boult (2007) and Hoff et al (2014). To assure the proceedings reliability, all the analyses were done with analytical blanks.…”

Section: Measurement Of Other Sediment Parametersmentioning

confidence: 99%

Distribution and ecotoxicology of bioavailable metals and As in surface sediments of Paraguaçu estuary, Todos os Santos Bay, Brazil

Pereira

Moreira

Oliveira

et al. 2015

Marine Pollution Bulletin

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Surface sediments collected in the intertidal zone of Paraguaçu estuary in July, 2013, were analyzed for organic matter, nitrogen, phosphorus, grain size fractions and partial concentrations of 16 metals. The USEPA 3051A method and ICP-OES and CV-AAS techniques were chosen to metal analysis. Pollution indices (EF, Igeo and PIN) and a comparison with sediment quality guidelines (UET, ERL, ERM, TEL and PEL of NOAA) were conducted in order to evaluate the potential metal impacts over the area. Principal Component Analysis (PCA) and Pearson correlation results showed the importance of organic matter content and the fine-grained fraction of sediments on the control of the bioavailable metals distribution. The Paraguaçu estuary already has anthropogenic enrichment relative to the background level, especially for Mn, whose values exceeded almost 30 times the background at one site (Mn: 1197.30 mg kg(-1)). However, metal levels are still below the reference values with the exception of Hg at one site (Hg: 0.25 mg kg(-1), exceeded TEL and ERL).

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Section: Measurement Of Other Sediment Parametersmentioning

confidence: 99%

Distribution and ecotoxicology of bioavailable metals and As in surface sediments of Paraguaçu estuary, Todos os Santos Bay, Brazil

Pereira

Moreira

Oliveira

et al. 2015

Marine Pollution Bulletin

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“…Chemical contamination has been recently reported in several marine protected areas from South America [30][31][32], including TBT environmental levels and impacts (imposex) in Paraty island (Brazil) [14], Mochima National Park (Venezuela) [25] and Argentine Patagonian coast [33]. The unexpected imposex occurrence in four muricid species from Galapagos Islands indicates that, despite the global TBT ban, environmental issues related to antifouling paints TBT-based still were not overcome, at least in South American coastal areas.…”

Section: Imposex Incidence In Galapagos Islandsmentioning

confidence: 99%

“…Biomonitoring studies are frequently hampered by the spatial distribution of bioindicator species which is influenced by several environmental characteristics [31]. Thus, it is often necessary to use different species to cover large coastal areas [32]. However, in order to provide relevant information about the imposex response of bioindicator species, comparative evaluations are useful [33] even when species of the same genus are used [34].…”

Section: Preliminary Assessment Of Imposex Sensitivitymentioning

confidence: 99%

“…4). Several comparative studies on sensitivity for imposex responses have been performed in different gastropod species [17,32,35]. The observed differences may be explained generally by differential physiological responses, bioaccumulation factors or excretion rates for xenobiotics, or even due specific feeding habits [36].…”

Section: Preliminary Assessment Of Imposex Sensitivitymentioning

confidence: 99%

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Tributyltin impacts in Galapagos Islands and Ecuadorian shore: Marine protected areas under threat

et al. 2016

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Imposex incidence and biometric parameters were investigated in six muricid species along of 1200 km of Ecuadorian shore and in Galapagos archipelago. The obtained data, were compared to previous studies performed in the same area in 2009. The results showed that moderate imposex levels still occur in coastal areas of Ecuador, even after global TBT ban. However, a reduction in imposex parameters was detected in the sampled sites, indicating probably relationship to the global TBT ban issued by IMO at 2008. On the other hand, the levels currently reported in present study indicates that TBT environmental concentrations are still high enough to produce biological effects in studied areas. In addition, imposex incidence in four muricid species from Galapagos islands were detected suggesting that this marine protected area is under threat of antifouling contamination. These findings, after TBT global ban, denotes that current regulations and conservation plans still need to address such an issue and incorporate more restrictive management rules, particularly in complex coastal areas, vulnerable and unique systems such as the Galapagos Islands.

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“…There is a better collection of fisheries data which helps improve policies that directly affect the sector. Mainly, products are guaranteed to come from a sustainably exploited area that combines the human development of the social groups involved (OCEANA, 2013;Hoff et al 2015).…”

Section: Introductionmentioning

confidence: 99%

Cambios estacionales del fitoplancton en el área marina de pesca responsable de Paquera-Tambor, Golfo de Nicoya, Costa Rica

García-Rojas¹,

Bolaños²

2016

Rev. Mar. Cost.

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La implementación de Áreas Marinas de Pesca Responsable (AMPR) es una herramienta para el ordenamiento pesquero, por ello, los estudios de línea base juegan un rol importante para comprender la dinámica ecológica desde las bases de la red trófica en las AMPR. El objetivo de este trabajo fue caracterizar la abundancia de los grupos taxonómicos del fitoplancton en el AMPR-Paquera-Tambor, para la determinación de cambios estacionales entre variables abióticas y el fitoplancton. Se realizó un muestreo mensual (de septiembre-2013 a agosto-2014) para la toma de muestras de factores fisicoquímicos, así como de microalgas planctónicas. Los datos evidenciaron una variación temporal tanto de los factores ambientales como del fitoplancton. Las microalgas más representativas fueron las diatomeas y los dinoflagelados con una riqueza de 51 y 32 especies, respectivamente, donde se resalta la presencia de algunas especies productoras de florecimientos algales como Cochlodinium catenatum con una concentración de 5.85x104cél L-1. Con respecto a las diatomeas y los parámetros, como la profundidad del disco Secchi (r = -0.558) y el porcentaje de saturación de oxígeno (r = -0.490), se reflejó una correlación negativa debido a la variabilidad climática de la zona. Se identificaron organismos del grupo zooplanctónico de los tintínidos, los cuales presentaron una correlación positiva con las diatomeas (r = 0.433). Se evidenció una dinámica ecosistémica fundamental para el desarrollo trófico del AMPR-Paquera-Tambor, que fundamenta la importancia pesquera de la zona y refleja la relevancia de continuar con un monitoreo biótico y abiótico para la zona.

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Levels of metals, arsenic and phosphorus in sediments from two sectors of a Brazilian Marine Protected Area (Tupinambás Ecological Station)

Cited by 22 publications

References 27 publications

Distribution and ecotoxicology of bioavailable metals and As in surface sediments of Paraguaçu estuary, Todos os Santos Bay, Brazil

Distribution and ecotoxicology of bioavailable metals and As in surface sediments of Paraguaçu estuary, Todos os Santos Bay, Brazil

Tributyltin impacts in Galapagos Islands and Ecuadorian shore: Marine protected areas under threat

Cambios estacionales del fitoplancton en el área marina de pesca responsable de Paquera-Tambor, Golfo de Nicoya, Costa Rica

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