Changes in Water Quality of the River das Antas as It Passes through Rural and Urban Areas

Antoneli, Valdemir; Fernández, Manuel Pulido; Bednarz, João Anésio; Brandes, Leonardo; Vrahnakis, Michael; Kazoglou, Yannis; Lozano‐Parra, Javier; García-Marín, Ramón

doi:10.3390/urbansci5010022

Cited by 4 publications

(3 citation statements)

References 25 publications

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“…Rural development is the subject of much research in various scientific disciplines due to its multifaceted and multidimensional nature [23][24][25][26][27][28][29][30][31][32][33][34][35][36][37][38][39].…”

Section: Literature Reviewmentioning

confidence: 99%

Obtaining Forest Biomass for Energy Purposes as an Enterprise Development Factor in Rural Areas

Roman

Wojcieszak

et al. 2021

Applied Sciences

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This article presents how selected factors related to forest biomass affect enterprise development in rural areas. The study used a multivariate analysis of variance (ANOVA), as well as the AHP operational research method. The following factors were selected for analysis: conifer timber harvesting, sales of renewable fuel in the form of briquettes to selected customers, and the number of the given company’s regular customers. Their selection was determined by the fact that using plant material for energy purposes has become significantly more popular in recent years. This particularly includes forest biomass, which is increasingly used as an energy commodity in the Polish heating industry. Forest biomass is a biodegradable raw material generated in the form of waste during wood production and processing, as well as during sanitation cutting. The study was conducted using a diagnostic survey method with a survey questionnaire in the first quarter of 2020. It included 614 owners of small and medium-sized enterprises operating in various rural areas across all of Poland’s voivodeships. The study was conducted using the CATI method. Analyses defining the dependence of specific factors on the examined parameters and supporting the priority nature of the given actions may show the development of particular pro-ecological actions in a given area. In one case, the critical level of significance determining the assignment of the analyzed factor to a specific homogeneous group was below 0.05. This means that there was a correlation between the sales of renewable fuel in the form of briquettes to selected customers and the number of enterprises in the voivodeship. Therefore, due to the sales of renewable fuel in the form of briquettes to selected customers, the greatest development prospects for wood industry companies existed in the Małopolskie, Mazowieckie, Śląskie and Wielkopolskie Voivodeships.

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Section: Literature Reviewmentioning

confidence: 99%

Obtaining Forest Biomass for Energy Purposes as an Enterprise Development Factor in Rural Areas

Roman

Wojcieszak

et al. 2021

Applied Sciences

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“…Headwater streams from the Amazon basin, where there is intense agricultural activity and no riparian forest, showed a more seasonal variation of the limnological and biological parameters (Jankowski et al, 2021). Agriculture increases the sediment input in tropical rivers, altering the pH (Antoneli et al, 2021). Riparian vegetation mitigates the impact of agriculture in tropical streams; thus, environments with greater presence of riparian vegetation have the best biotic integrity and habitat quality (Effert-Fanta et al, 2019, Hilary et al, 2021.…”

Section: Introductionmentioning

confidence: 99%

Influence of Riparian Forest and Temperature on Primary Production of Tropical Streams

Oliveira,

Wastowski,

Carneiro

2023

Braz. J. Aquat. Sci. Technol.

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Primary production is a key feature for the functioning of aquatic ecosystems. The trophic state of the streams reflects this primary production and is influenced by local limnological variables and level of integrity of the watershed. Thus, in this study, habitat integrity index (HII) and physical, chemical, and biological parameters of tropical streams were sampled in two sub-basins to understand the functioning of these ecosystems. We hypothesized that the variables association to the environmental integrity should determine the primary production in the streams. Because of the similar land use in the sub-basins (ex.: agriculture and livestock) they will show similar limnological variables. To identify how the streams differed in relation to their limnological characterization and the HII, we performed a Principal Component Analysis (PCA). The association between variables was assessed by Pearson's correlation analysis. To identify the difference between the two basins, a Student's Test was performed. The best predictors of primary production were determined using a multiple regression analysis with the Akaike selection criteria. The concentration of chlorophyll-a in the surface water indicated that the tropical streams sampled have, in general, low concentrations of nutrients, except for some more urban points. The variables that most differed among streams were blue-green cells/ml, pH, conductivity, and width of the riparian forest. Only redox potential and pH differed between the two watersheds. Temperature, blue-green cells/ml and width of the riparian forest were the variables that best predicted the phytoplankton primary production of watercourses in both watersheds. In this study we reinforce the importance of temperature in aquatic productivity, even more present in the face of climate change, which, added to deforestation, increases the surface area of sunlight in water courses, increases primary productivity and the eutrophication process.Keywords: blue-green algae; chemical variables; chlorophyll-a; HII; phytoplankton.

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“…The process of development and land use change is one factor that contributes to the deterioration of water quality in a drainage basin [4] [5] [6] [7] [8].As a result of increased human activity, the river has become a garbage dump, which could degrade the quality and quantity of the river. Recently, the number of river basins supplying water for domestic use has been discovered to be decreasing.…”

Section: Introductionmentioning

confidence: 99%

Water Quality of the Jerteh River Basin, Terengganu, Malaysia During the Northeast Monsoon

Omar¹,

Hashim

Nayan

et al. 2022

IOP Conf. Ser.: Earth Environ. Sci.

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Human activities that cause land use changes are factors affecting the river’s water quality. This study was centred on assessing the quality of the water in the Jerteh River basin that was affected by the land use changes. The water samples were collected at five monitoring stations along the Jerteh River. The fieldwork was conducted between November 2017 and February 2018. The water samples were analysed in the laboratory for six water quality parameters: Biochemical Oxygen Demand (BOD), Chemical Oxygen Demand (COD), Total Suspended Solid (TSS), Ammoniacal Nitrogen (NH3-N), Alkalinity Index (pH) and Dissolved Oxygen (DO). The results showed that the water quality index forthe Jerteh River was classified as moderately polluted (Class II). Three parameters, namely COD, TSS, and NH3-N, were in Classes III and IV during the study period. This study concludes that land use changes due to human activities have impacted the water quality of the Jerteh River basin during the Northeast Monsoon season. Therefore, mitigation and drastic measures should significantly improve the Jerteh River basin’s water quality. All relevant parties should have worked collectively to improve the water quality of the Jerteh River rather than leaving it to the authorities.

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Changes in Water Quality of the River das Antas as It Passes through Rural and Urban Areas

Cited by 4 publications

References 25 publications

Obtaining Forest Biomass for Energy Purposes as an Enterprise Development Factor in Rural Areas

Obtaining Forest Biomass for Energy Purposes as an Enterprise Development Factor in Rural Areas

Influence of Riparian Forest and Temperature on Primary Production of Tropical Streams

Water Quality of the Jerteh River Basin, Terengganu, Malaysia During the Northeast Monsoon

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