Phytoplankton Productivity and Hydrology of Porto de Galinhas Reef Ecosystem (Pernambuco, Brazil)

Machado, Raquel Correia de Assis; Feitosa, Fernando Antônio do Nascimento; Koening, Maria Luise; Montes, Manuel de Jesús Flores; Bastos, Rafaella Brasil; Jales, Marina Cavalcanti

doi:10.2112/jcoastres-d-13-00007.1

Cited by 7 publications

(9 citation statements)

References 26 publications

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“…The low primary phytoplankton productivity values observed in the present study were similar to those recorded by [67] in Tamandaré Bay, by [68] in a profile perpendicular to the coast at Piedade beach, by [51] in Maracajaú (Rio Grande do Norte state, Brazil), and by [43] in the reef environments of Porto de Galinhas. On the other hand, the present results were different from the high phytoplankton productivity levels observed by [69] in Pina basin, by [38] upstream in the Sirinhaém River, and by [70] in the estuary of the Timbó River, which are highlyeutrophic ecosystems.…”

Section: Discussionsupporting

confidence: 91%

“…Based on the classification system developed by [49], the oxygen saturation rate in the waters adjacent to the SIPC varied from saturated to supersaturated, thus indicating that this environment receives low organic contributions and substantial amounts of seawater. This outcome corroborated results found by [50] on the northern coast of Bahia State, by [51] in Maracajaú (RN), and by [43] in Porto de Galinhas.…”

Section: Discussionsupporting

confidence: 89%

“…Low thermal amplitude and seasonal differences were also reported in other coastal regions of Pernambuco State, such as in the inner portion of Suape Port [42], the Porto de Galinhas beach [43] and the estuary of Maracaípe River [39].…”

Section: Discussionmentioning

confidence: 65%

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Phytoplankton Productivity and Hydrology in an Impacted Estuarine Complex in Northeastern Brazil

Silva¹,

Feitosa²,

Montes³

et al. 2019

OJE

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The aim of the current study was to evaluate the productive capacity of the phytoplankton community and other environmental variables in the estuarine area of Suape; while considering the constant morphological, sedimentological and hydrological changes, the site has been facing due to the implementation and expansion of an industrial and port complex. The study comprised 6 campaigns: 3 in the dry season and 3 in the rainy season. Water samples were collected from the surface layer of the internal and external portions of the estuarine bay during low spring tides. The salinity ranged from 32.20 to 37.10, the water temperature ranged from 26.60˚C to 29.40˚C, and the oxygen saturation rate ranged from 58.5% to 114.5%. There was significant seasonal variation. The nitrite concentration was higher during the rainy season, whereas the ammonia concentration was higher during the dry season; the higher ammonia concentration helped increase chlorophyll-a levels and rates of primary productivity, which ranged from 0.02-2.45 mg•m −3 and from 0.34 to 4.32 mg•C•m −3 •h −1 , respectively. Chlorophyll-a < 20 μm was the fraction of biomass most commonly present in the estuarine ecosystem, accounting for 88.6% of the chlorophyll-a-containing biomass, and this reflected the low nutrient content in the water and indicated that the area was free from eutrophication processes. The decrease of rainfall during the sampling months and the anthropogenic changes in the environment led to reduced continental contributions, increased marine interference, nutrient dilution and loss of phytoplankton production capacity in Suape Bay, which severely damaged other trophic links in the ecosystem.

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Section: Discussionsupporting

confidence: 91%

Section: Discussionsupporting

confidence: 89%

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Phytoplankton Productivity and Hydrology in an Impacted Estuarine Complex in Northeastern Brazil

Silva¹,

Feitosa²,

Montes³

et al. 2019

OJE

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“…Environmental variables are fundamental in the comparison and interpretation of meiofauna distribution patterns in areas exposed to different levels of anthropogenic impact [2]. In coral reef ecosystems, the water is generally considered oligotrophic [60,61], supersaturated with oxygen, and the nutrient concentrations are mainly influenced by atmospheric deposition, organic matter remineralization processes, sediment resuspension, or by riverine/estuarine input. The DIN, DIP and SiO 2 values registered for the control areas indicated minimal concentrations, which is expected for a non-impacted reef and allows higher levels of diversity [62][63][64][65].…”

Section: Discussionmentioning

confidence: 99%

Anthropogenic Impacts on Coral Reef Harpacticoid Copepods

et al. 2018

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The number of studies demonstrating the susceptibility of benthic reef communities to anthropogenic impacts is growing. However, for some of the components of reef fauna, such as meiobenthic harpacticoid copepods, information is still lacking. Here, different diversity and taxonomic distinctness indexes and multivariate analyses were used to test whether the assemblage of harpacticoid copepods colonizing Artificial Substrate Units (ASUs) is an appropriate tool for the identification of reefs subjected to different levels of anthropogenic pressure. Furthermore, we also evaluate if diffused, persistent, anthropogenic impacts generate the homogenization and simplification of Harpacticoida assemblages. Six reefs were organized into two groups along the coast, depending on their proximity to very large urban centers. ASUs were used for meiofauna colonization and, for each reef, 320 Harpacticoida individuals were separated for identification at the species level. Abiotic parameters were analyzed, and significant differences were found between the two groups of reefs, with an increase in dissolved inorganic nutrients found in areas near large urban centers. Both the multivariate analyses and the indexes of diversity showed a clear separation between the reefs closer to the urban zones and those further away, as a response to the anthropogenic pressure. As hypothesized, in the impacted reef areas, there was a strong simplification and homogenization of the harpacticoid copepod assemblages. However, the results of the indexes, based on taxonomic distinctness, suggest that there was no phylogenetic signal of anthropogenic impact on coral reef harpacticoid copepods.

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“…Porém, os valores encontrados nas estações do PEMAV estão dentro da faixa ótima de temperatura (entre 26 e 28°C) para os ambientes recifais rasos (Segal & Castro, 2008). (Machado et al, 2014), zooxantelas; além da ação das ondas, ventos e turbulência (Silva, 2015).…”

Section: Análises Estatísticasunclassified

Impactos das tecnologias nas ciências exatas e da terra 2

Paiva¹

2019

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Phytoplankton Productivity and Hydrology of Porto de Galinhas Reef Ecosystem (Pernambuco, Brazil)

Cited by 7 publications

References 26 publications

Phytoplankton Productivity and Hydrology in an Impacted Estuarine Complex in Northeastern Brazil

Phytoplankton Productivity and Hydrology in an Impacted Estuarine Complex in Northeastern Brazil

Anthropogenic Impacts on Coral Reef Harpacticoid Copepods

Impactos das tecnologias nas ciências exatas e da terra 2

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