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Branco, Christina Wyss Castelo; Esteves, Francisco de Assis; Kozlowsky‐Suzuki, Betina

doi:10.1023/a:1026571301811

Cited by 28 publications

(4 citation statements)

References 28 publications

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“…DO values ranged from 2.34 to 8.91 mg•L −1 and oxygen saturation remained around 80% during most of the sampled period, which demonstrates that oxygen is not a limiting factor for the biota in Potou lagoon. Similar oxygen concentrations are found in other coastal lagoons, such as Comprida lagoon in South East Brazil [23], Foz de Almargem lagoon in Portugal [29] and Icarai and Guanabara lagoons in South East Brazil [32].…”

Section: Seasonal Variation Of Water Quality Parameterssupporting

confidence: 80%

“…Transparency of the water column varied relatively little, between 0.1 and 0.80 m obtained respectively during October and February. Low transparency of the water column seems to be a common feature for several coastal lagoons such as Comprida lagoon in Brazil [23] and Ebrié lagoon in Cote d'Ivoire [26]. The transparency value (range, 0.20 ± 0.08 -0.25 ± 0.04 m) recorded in the short rainy season was significantly lower (p < 0.05) than the mean values for the long dry season indicating that suspended particulate matter contribute to decrease water transparency [27].…”

Section: Seasonal Variation Of Water Quality Parametersmentioning

confidence: 99%

“…Coastal lagoons usually present higher pH values especially because of the sea water influence [7] [28]- [31]. The presence of humic materials, on the other hand, can acidify the waters [23]. The mean values recorded by [22] in the same lagoon are also in the same range (0 -5).…”

Section: Seasonal Variation Of Water Quality Parametersmentioning

confidence: 99%

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Seasonal and Spatial Variations in Water Physicochemical Quality of Coastal Potou Lagoon (Côte d’Ivoire, Western Africa)

Marthe¹,

Lanciné²,

Kamagaté³

et al. 2015

JWARP

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The study investigates the seasonal and spatial variations in water quality parameters at four different locations along Potou lagoon for seventeen consecutive months. In order to explore spatial variation among different stations and seasonal changes, no parametric test of ANOVA was used to compare the mean values of the tested parameters for all the different sampling sites and seasons. Seasonal observations on water quality parameters and chlorophyll-a in Potou coastal lagoon revealed that the coastal water was significantly influenced by freshwater during the long and short rainy seasons. The seasonal significant variation (p < 0.05) was generally recorded between the long dry season and the short rainy season. Temperature, salinity, pH, dissolved oxygen, transparency and chlorophyll-a increased during the long dry season, whereas, the concentration of nutrients (nitrite, nitrate, ammonium and soluble reactive phosphorus) increased in the rainy periods. Contrary to the seasonal variation, a spatial homogeneity (horizontal) was registered for all variables, a condition related to the low human occupation in the lagoon watershed. Comparing this study with others conducted in Potou lagoon in 2008, no critical differences that evidence alteration in the water quality were found.

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Section: Seasonal Variation Of Water Quality Parameterssupporting

confidence: 80%

Section: Seasonal Variation Of Water Quality Parametersmentioning

confidence: 99%

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Seasonal and Spatial Variations in Water Physicochemical Quality of Coastal Potou Lagoon (Côte d’Ivoire, Western Africa)

Marthe¹,

Lanciné²,

Kamagaté³

et al. 2015

JWARP

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“…Given their short life cycles, zooplankton organisms can respond rapidly and sensitively to many physical, chemical, and biological changes in aquatic ecosystems [13][14][15]. Zooplankton are therefore highly sensitive to environmental changes, and changes in zooplankton community composition or abundance are often considered indicative of environmental disturbances in coastal lagoons (e.g., [16][17][18][19]). The second hypothesis of this study is therefore that the zooplankton community of Nokoué Lagoon may respond to other physico-chemical parameters than salinity and that the presence and dominance of certain zooplanktonic species could reflect particular environmental conditions.…”

Section: Introductionmentioning

confidence: 99%

Physicochemical Drivers of Zooplankton Seasonal Variability in a West African Lagoon (Nokoué Lagoon, Benin)

Chaigneau

Ouinsou

Akodogbo

et al. 2023

JMSE

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This study aimed to investigate the seasonal variation of zooplankton diversity and abundance in the Nokoué Lagoon in southern Benin. Through extensive sampling, a total of 109 zooplanktonic taxa were identified and quantified. The average zooplankton abundance was found to be 60 individuals per liter, with copepods and rotifers being the most dominant groups, comprising 68.1% and 29.1% of the total abundance, respectively. The key factor identified as driving the structure of the zooplanktonic assemblages was salinity, which showed significant seasonal variation. The results revealed that during the high water period, when the lagoon was filled with fresh water, rotifers were dominant, zooplanktonic diversity was highest, and abundances were quite high. Conversely, during the low water period, when the lagoon was characterized by brackish water, diversity was minimal, and abundance decreased slightly. The study also found that some areas of the lagoon showed high abundances independent of salinity levels, suggesting that other factors such as riverine inputs or the presence of acadjas (home-made brush parks used as fish traps) may also have notable effects on the zooplankton community. Overall, the findings of this study provide valuable insights into the functioning of one of the most biologically productive lagoons in West Africa.

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Naturally acidic waterways: conceptual food webs for better management and understanding of ecological functioning

Holland

Duivenvoorden

Kinnear

2012

Aquatic Conservation

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Naturally acidic fresh waters have high conservation value, with their habitats supporting a high level of biodiversity as well as providing for rare organisms that are specially adapted to life in low‐pH environments. Food webs within naturally acidic waterways are heavily reliant on the input of large amounts of organic matter from the surrounding terrestrial environment. Although these systems are found worldwide, the increasing threats of global climate change and urban developments are placing naturally acidic environments under threat of catastrophic changes to their ecology. Despite this, studies of these unique systems remain in their infancy, especially when compared with systems acidified by anthropogenic means. This paper aims to explore the varying influences on key food‐web elements in naturally acidic waterways, particularly with regard to allochthonous organic matter (AOM). A conceptual model for the food webs of naturally acidic environments is presented, with the aim of providing a framework to understand the ecological functioning of these under‐studied systems. This information will be critical in informing management decisions as naturally acidic streams are challenged by increasing environmental pressures. The possibility that dissolved organic carbon (DOC) can buffer organisms in naturally acidic environments against the toxicity caused by low pH is also explored. Copyright © 2012 John Wiley & Sons, Ltd.

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Cited by 28 publications

References 28 publications

Seasonal and Spatial Variations in Water Physicochemical Quality of Coastal Potou Lagoon (Côte d’Ivoire, Western Africa)

Seasonal and Spatial Variations in Water Physicochemical Quality of Coastal Potou Lagoon (Côte d’Ivoire, Western Africa)

Physicochemical Drivers of Zooplankton Seasonal Variability in a West African Lagoon (Nokoué Lagoon, Benin)

Naturally acidic waterways: conceptual food webs for better management and understanding of ecological functioning

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Cited by 28 publications

References 28 publications

Seasonal and Spatial Variations in Water Physicochemical Quality of Coastal Potou Lagoon (C&#244;te d’Ivoire, Western Africa)

Seasonal and Spatial Variations in Water Physicochemical Quality of Coastal Potou Lagoon (C&#244;te d’Ivoire, Western Africa)

Physicochemical Drivers of Zooplankton Seasonal Variability in a West African Lagoon (Nokoué Lagoon, Benin)

Naturally acidic waterways: conceptual food webs for better management and understanding of ecological functioning

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Seasonal and Spatial Variations in Water Physicochemical Quality of Coastal Potou Lagoon (Côte d’Ivoire, Western Africa)

Seasonal and Spatial Variations in Water Physicochemical Quality of Coastal Potou Lagoon (Côte d’Ivoire, Western Africa)