Marine debris in a World Heritage Listed Brazilian estuary

Possatto, Fernanda E.; Spach, Henry Louis; Cattani, André Pereira; Lamour, Marcelo Renato; Santos, Lilyane Oliveira; Cordeiro, Nathalie M.A.; Broadhurst, Matt K.

doi:10.1016/j.marpolbul.2014.09.032

Cited by 48 publications

(24 citation statements)

References 33 publications

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“…Despite the PEC being one of the most preserved estuaries in Brazil, anthropogenic developments and disturbances are apparent, especially in the east-west axis, which has a large port and greater urbanisation with more marine debris (Possatto et al 2015), maritime traffic (Guebert et al 2013), domestic discharge and sewage (Kolm et al 2002;Martins et al 2011) than the north-south axis. Nevertheless, it is clear that like the rest of the PEC, the east-west axis remains important to resident and transient teleosts, the movements of which are driven by a combination of abiotic and biotic factors, including rainfall (which affects salinity and turbidity), temperature, reproduction, recruitment and habitat preferences.…”

Section: Conclusion and Management Implicationsmentioning

confidence: 99%

“…The Paranaguá estuarine complex (PEC; Fig. 1) in southern Brazil is one such estuary (Diegues 1995;Possatto et al 2015). Despite being heavily populated, the PEC is considered one of the most preserved Brazilian ecological environments (Sá et al 2006).…”

Section: Introductionmentioning

confidence: 99%

“…Notwithstanding these activities, attempts have been made to protect large areas of the coastal zone through environmental legislation. This protection encompasses vast mangrove belts bordering the estuary, which serve as important habitat for various marine fauna, and are ecologically linked to the extended rainforest zone in the hinterland (Pichler et al 2015;Possatto et al 2015).…”

Section: Introductionmentioning

confidence: 99%

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Spatiotemporal variation among demersal ichthyofauna in a subtropical estuary bordering World Heritage-listed and marine protected areas: implications for resource management

Possatto

Broadhurst

Gray

et al. 2017

Mar. Freshwater Res.

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Benthic trawl surveys were performed to quantify the spatiotemporal distributions of teleosts and key abiotic associations throughout an ecologically important estuary within Brazil's Atlantic Forest biosphere. Approximately 52 000 fish (51% juveniles) representing 75 species were sampled, with residents accounting for 36 and 61% of total species and individuals respectively. Five artisanally important species comprised 77 and 81% of individuals and biomass respectively. Cathorops spixii was most abundant (.40% of total), whereas Stellifer rastrifer, Aspistor luniscutis, Sphoeroides greeleyi and S. testudineus collectively contributed towards 37 and 34% of individuals and biomass respectively. The abundance of A. luniscutis, C. spixii and S. rastrifer was negatively associated with salinity, whereas the presence of the latter two species was also positively associated with temperature, and S. greeleyi and S. testudineus (mostly adults) were more abundant in deeper areas. These relationships seemed to be affected by species-specific reproductive (S. rastrifer, C. spixii and A. luniscutis), habitat (S. greeleyi and S. testudineus) and prey preferences (juvenile C. spixii and A. luniscutis). Protection for these various species may be achieved via immediate fishing effort regulations, but more research is required to manage other anthropogenic effects. Such work should be a priority to ultimately preserve what is one of the most important South American biodiversity areas.

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Section: Conclusion and Management Implicationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Spatiotemporal variation among demersal ichthyofauna in a subtropical estuary bordering World Heritage-listed and marine protected areas: implications for resource management

Possatto

Broadhurst

Gray

et al. 2017

Mar. Freshwater Res.

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“…Despite the fact that the PEC is of considerable economic and ecological importance to Southern Brazil (POSSATTO et al, 2015) and represents a key region for the environmental preservation and social/ economic development of the state of Paraná, the impact of metal concentrations in the water column of this system has not yet been assessed. Previous studies have focused on metal concentrations in sediments (SÁ et al, 2015;CHUOERI et al, 2009) and in catfish (ANGELLI et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Metals impact into the Paranaguá Estuarine Complex (Brazil) during the exceptional flood of 2011

et al. 2017

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Particulate and dissolved metal concentrations were determined after the largest flood in the last 30 years on the east-west axis of the Paranaguá Estuarine Complex (PEC) and compared to the those of the dry period at two stations. Results confirmed that the flood greatly affected riverine outflows and the behavior of metals in the PEC. In particular, a sharp decrease in salinity was followed by extremely high SPM concentrations leading to a decrease in DO concentrations at both stations. For the dissolved phase, ANOSIM analysis showed a significant dissimilarity at each station between the sampled periods, whereas for the particulate phase this dissimilarity was found only for the samplings taken at the Antonina Station. KD values suggested dissolved Cu behavior was related to the presence of organic complexes and dissolved Mn had sediment resuspension of redox sediments and or/pore water injection as sources. Metal concentrations were lower than in polluted estuaries, though high enrichment factors found after the flood pointed to the influence of anthropogenic sources. In conclusion, the flood's influence was more evident at the Antonina Station, due to its location in the upper estuary, whereas in Paranaguá a high SPM content with low metal concentration was found, following the common pattern generally found in other marine systems subject to heavy rainfall events. Com o objetivo de avaliar a influência do maior evento de enchente dos últimos 30 anos no Complexo Estuarino de Paranaguá (CEP), ocorrido em 2010, concentrações de metais na fase particulada e dissolvida foram medidas em duas estações amostrais, e comparadas ao período seco. Os resultados confirmaram a influência desse evento no aumento do fluxo dos rios e no comportamento dos metais no CEP. Uma acentuada diminuição na salinidade, concomitante ao aumento de material particulado em suspensão, gerou a diminuição das concentrações de oxigênio dissolvido nas duas estações amostradas. A análise de ANOSIM indicou ausência de similaridade entre ambas as estações e períodos amostrados, enquanto que para a fase particulada essa diferença foi evidente apenas para a estação de Antonina. Os valores do coeficiente de partição (KD) sugeriram um input de manganês dissolvido por meio de processos de oxi-redução. As concentrações de metais registradas foram menores do que as encontradas em estuários poluídos; no entanto, o aumento do Fator de Enriquecimento após o evento de inundação sugeriu a influência de fontes antrópicas. Como conclusão geral, a influência do evento de inundação foi mais evidente na estação de Antonina, principalmente devido a sua localização na parte superior do estuário, enquanto que em Paranaguá o aumento do SPM foi acompanhado de uma diminuição na concentração de metais, seguindo o comportamento de metais registrados em outros estuários após eventos de inundação. AbstrAct Marilia Lopes da Rocha resumoDescritores: Metais na fase dissolvida, Metais no particulado, eventos de inundação, coeficiente de partição.

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“…rural, peri-urban, urban, aquaculture, agriculture, industry, residential, commercial) Sánchez et al, 2013;Leite et al, 2014), and population density can also influence AMD accumulation in mangroves. The size, weight, and type of the debris (Cordeiro and Costa, 2010;Possatto et al, 2015;Ivar do Sul et al, 2014;Martin et al, 2019) have also been reported to influence their accumulation and distribution within mangroves. This propensity towards accumulation is its strength in the protection of the coastline but also its weakness in accumulating AMD, causing detrimental, long-term effects to the ecosystem.…”

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confidence: 99%

Anthropogenic marine debris and its dynamics across peri-urban and urban mangroves on Penang Island, Malaysia

Chee

Chai

Carey

et al. 2019

Preprint

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Mangroves act as sinks to a variety of anthropogenic marine debris (AMD) forms. However, knowledge of their distribution and accumulation dynamics is limited. To address this shortfall, abundance, sorting, and diversity parameters of AMD were evaluated across the canopy of Penang's urban and peri-urban mangroves. Two urban and two peri-urban mangroves were sampled at different periods over 2 months, with differences constrained by possible changes in their wind fields, and neap-spring tidal development. Debris were counted and classified across transects parallel to the coastline at progressively higher water marks. Plastics made up most of the AMD across all sites. More AMD was retained in the urban sites, consistent with their larger resident population density. Diversity of debris forms were consistent with the type of land use and population livelihood in each area. The greatest differences in abundance, diversity, and evenness were recorded between the lower tidal zones and the remaining inner transects consistent with sorting towards the coastal edge in favour of plastic items. Overall, differences across transects and sites suggested: 1) the canopy and root structure within the main body of the mangrove efficiently retained debris with little sorting; and 2) debris deposited closer to the edge is increasingly sorted and lost to the water body in favour of smaller plastic items, for a constant wind field and irrespective of neap-spring phases. The findings show that mangrove areas are vulnerable to a constant build of potentially harmful debris with selective leakage and sorting of materials back to the water body closer to their coastal edges. For Penang Island, the study highlights the areas in need of attention and prioritization, lists the types of debris needing proper management, and will aid in the future monitoring, mitigation and/or rehabilitation of these sensitive ecosystems.

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Marine debris in a World Heritage Listed Brazilian estuary

Cited by 48 publications

References 33 publications

Spatiotemporal variation among demersal ichthyofauna in a subtropical estuary bordering World Heritage-listed and marine protected areas: implications for resource management

Spatiotemporal variation among demersal ichthyofauna in a subtropical estuary bordering World Heritage-listed and marine protected areas: implications for resource management

Metals impact into the Paranaguá Estuarine Complex (Brazil) during the exceptional flood of 2011

Anthropogenic marine debris and its dynamics across peri-urban and urban mangroves on Penang Island, Malaysia

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