Qualidade da água de três estuários tropicais expostos a diferentes níveis de urbanização

Nascimento, Regina Célia Macêdo do; Costa, Cibele Rodrigues; Magarotto, Mateus; Silva-Cavalcanti, Jacqueline Santos; Costa, Mônica F.

doi:10.5894/rgci-n284

Cited by 4 publications

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“…Some natural and geological features are attractive to the human population near these areas. Population growth and anthropic activities around these environments, such as the creation of harbors or the extraction of organisms for fishing, can modify the aquatic environment and create stressful conditions that cause biodiversity loss and affect ecosystem functioning and biological cycles, such as those of zooplankton organisms (Attrill, 2002; Karydis & Kitsiou, 2013; Nascimento et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Zooplankton community and copepod carcasses and non‐predatory mortality in six tropical estuarine systems (Northeast of Brazil)

da Cruz,

Lira,

de Melo Júnior

2023

Marine Ecology

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Copepod carcasses and non‐predatory mortality can occur due to natural senescence, disease, pollution, and physicochemical stress. Our objective is to evaluate and characterize the rates of non‐predatory mortality and the contribution of zooplankton community carcasses, represented by the copepods, in tropical estuarine ecosystems with different degrees of urbanization. During the study, there was a significant difference between environments and copepod carcasses, with Suape Bay (moderately urbanized) being the environment with the highest abundance of adult copepod carcasses (93.3%). The average non‐predatory mortality rate of adult copepods was 0.15 day−1: Santa Cruz Channel (sparsely urbanized) contributed the lowest values, with a mortality rate of 0.01 day−1, and Suape (moderately urbanized) had the highest rate (2.80 day−1). The families Paracalanidae (0.554 day−1) and Oithonidae (0.122 day−1) had the highest values, with an average carcass decomposition of 4.7 days. Among the environments studied, there was little differentiation between carcass percentages and mortality rate, not supporting the hypothesis that the higher rates of mortality among non‐predatory copepods were related to large urban centers. However, there was an almost proportional contribution of carcasses and non‐predatory mortality in all but a few areas, agreeing with the hypothesis that there is spatial variation with respect to carcasses in tropical estuaries. With our work, we show that estuaries can provide the estuarine food web with a significant portion of copepod carcasses, which may vary by family, and that it is not necessarily environments with a higher degree of urbanization that will have higher mortality rates.

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Section: Introductionmentioning

confidence: 99%

Zooplankton community and copepod carcasses and non‐predatory mortality in six tropical estuarine systems (Northeast of Brazil)

da Cruz,

Lira,

de Melo Júnior

2023

Marine Ecology

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“…O monitoramento da qualidade física e química da água dos estuários permite identificar processos de degradação ambiental, como eutrofização, hipóxia e anoxia, principalmente a partir de impactos ocasionados pela carência de saneamento básico, monoculturas (como cana de açúcar), remoção da vegetação nativa para expansão urbana e instalação de polos industriais, além do uso intensificado de poluentes agrícolas (Nascimento et al, 2020). Com o aumento de impactos antrópicos nesses ambientes, tem-se necessidade da ampliação de estratégias de monitoramento, em ênfase as de longo prazo, para que ser torne possível mitigar os impactos socioambientais (Freeman et al, 2019).…”

Section: Introductionunclassified

“…Para o Estado de Pernambuco, Nordeste do Brasil, existe a Agência Estadual de Meio Ambiente (CPRH), que disponibiliza dados referentes ao monitoramento das Bacias Hidrográficas do estado. Porém a produção desses dados é subutilizada para a construção de políticas públicas voltadas para a gestão local (Nascimento et al, 2020).…”

Section: Introductionunclassified

Qualidade da Água no Estuário do Rio Goiana, Nordeste do Brasil: Subsídios para a Conservação

Cidreira-Neto

Guilherme

Rodrigues

et al. 2022

Rev. Bras. Geog. Fis.

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Os estuários são ambientes aquáticos susceptíveis a impactos antrópicos provenientes do uso ocupação do solo de forma desordenada, e pelo despejo de efluentes doméstico ou industriais, que podem resultar na baixa qualidade da água nesses ecossistemas, afetando a toda biodiversidade e as dinâmicas socioeconômicas, como no caso da pesca artesanal. O objetivo foi identificar a qualidade da água no rio Goiana, em específico na área do domínio da Reserva Extrativista (RESEX) Acaú-Goiana, como forma de subsidiar a gestão ambiental. Foram utilizados dados históricos (2001 – 2019) disponibilizados pela Agência Estadual de Meio Ambiente (CRPH) do Estado de Pernambuco para a Bacia Hidrográfica do Rio Goiana, em específico no ponto de amostragem GO-85 (Goiana-85). As variáveis utilizadas foram: Pluviometria, Temperatura, Potencial Hidrogeniônico (pH), Salinidade, Oxigênio Dissolvido (OD), Saturação de Oxigênio (OD-Sat), Demanda Bioquímica de Oxigênio (DBO), Turbidez, Cor, Fósforo Total, Condutividade Elétrica e Coliformes Fecais Termotolerantes. A partir dos valores encontrados para o OD, foi possível identificar um estágio de hipoxia. Os valores de turbidez, fósforo total e coliformes termotolerantes foram superiores ao indicado pela legislação, podendo ser reflexo do intenso uso da área pela produção agroindustrial e despejo de efluentes. Os dados disponibilizados pela CPRH demonstram que existe uma carência na sua continuidade, principalmente no ponto de amostragem GO-85, que está situado nos domínios da RESEX Acaú-Goiana, o que influencia no entendimento da variação sazonal entre as estações seca e chuvosa na área. O monitoramento da qualidade da água na jusante do estuário é recomendado, contemplando a área de domínio da RESEX Acaú-Goiana.Palavras-chave: Variáveis físicas e químicas, Monitoramento, Recursos Hídricos, Área Protegida, Gestão. Water Quality in the Goiana River Estuary, Northeastern Brazil: Conservation AllowancesABSTRACTEstuaries are aquatic environments susceptible to anthropogenic impacts from disorganized land use, and from the discharge of domestic or industrial effluents, which can result in poor water quality in these ecosystems, affecting all biodiversity and socioeconomic dynamics, as in case of artisanal fishing. The objective was to identify the quality of water in the Goiana River, specifically in the area of the Acaú-Goiana Extractive Reserve (RESEX) domain, as a way of subsidizing environmental management. Historical data (2001 – 2019) provided by the Agência Estadual de Meio Ambiente (CRPH) of the State of Pernambuco were used for the Goiana River Basin, specifically at the GO-85 (Goiana-85) sampling point. The variables used were: Pluviometry, Temperature, (hydrogen potential) pH, Salinity, Dissolved Oxygen (OD), Oxygen Saturation (OD-Sat), Biochemical Oxygen Demand (DBO), Turbidity, Color, Total Phosphorus, Electrical Conductivity and Thermotolerant Coliforms. From the values found for the OD, it was possible to identify a stage of hypoxia. The values of turbidity, total phosphorus and thermotolerant coliforms were higher than those indicated by the legislation, which may be a reflection of the intense use of the area for agro-industrial production and effluent disposal. The data provided by CPRH demonstrate that there is a lack of continuity, especially at the GO-85 sampling point, which is located in the domains of the RESEX Acaú-Goiana, which influences the understanding of the seasonal variation between the dry and rainy seasons in the area. The monitoring of water quality downstream of the estuary is recommended, covering the domain area of RESEX Acaú-Goiana.Keywords: Physical and chemical variables, Monitoring, Water resources, Protected Area, Management

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“…Sendo assim, nestas áreas de elevada sensibi-lidade ambiental há de fazer um planejamento multidisciplinar o que não ocorre com frequência. Este é o caso da área costeira da Região Metropolitana do Recife (RMR) que possui grande expansão urbana, pouco planejamento e grande problemas ambientais (Costa et al, 2008;Nascimento et al, 2020).…”

Section: Introductionunclassified

Recife-Olinda The Last Frontier: Importance of Estuaries and Mangroves in Urban Environments

Magarotto¹,

Costa²,

Cavalcanti³

et al. 2020

COSTAS

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Located on the administrative border between the cities of Olinda and Recife, the Beberibe River estuary receives constant anthropic influence and its mangrove is the target of growing real estate speculation. The aim of this manuscript is to analyse the decline of mangroves present the Beberibe estuary margins in resulting (access or restriction) in the period from 1974 to 2014. The analyses are made using Geographic Information Systems to assess pressure and urban expansion. The results indicate that there are 30% of mangroves in the study area and that urban growth caused great losses to the mangrove ecosystem that is visible in the representations in the period 1974 - 2014. In view of the emerging paradigms of urban growth, there are new possibilities for physical connection and conceptual between these two cities based on the convergence between the historically linked population. This discussion took place recently in Recife, concerning the José Estelita Wharf, and is currently being repeated for this last frontier of disorderly urban growth. Keywords: Mangroves; Urban Ecosystems; Estuarine Pollution.

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Qualidade da água de três estuários tropicais expostos a diferentes níveis de urbanização

Cited by 4 publications

References 0 publications

Zooplankton community and copepod carcasses and non‐predatory mortality in six tropical estuarine systems (Northeast of Brazil)

Zooplankton community and copepod carcasses and non‐predatory mortality in six tropical estuarine systems (Northeast of Brazil)

Qualidade da Água no Estuário do Rio Goiana, Nordeste do Brasil: Subsídios para a Conservação

Recife-Olinda The Last Frontier: Importance of Estuaries and Mangroves in Urban Environments

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