Investigation into the occurrence of herbicide residues in the rivers of the Acaú-Goiana extractive reserve

Brazil is the world’s largest consumer of pesticides and numerous studies have reported damage to both human health and the environment due to exposure and the toxicity of these agrochemicals. Sugarcane crops present the highest herbicide consumption, leaving the margins of large watersheds. In this study, we have investigated the occurrence of herbicides in the surface waters of three different catchment areas, the rivers: Tracunhaém, Três Bocas and Capibaribe Mirim, all located in Goiana, Pernambuco, in a region outstanding for its intense agroindustrial activity, coastal marine biome and areas of shrimp farming. These rivers supply the domestic, industrial and agricultural consumption of around 26 municipalities of the North region of the Zona da Mata in the state of Pernambuco, and has a population of 465,549. Twelve herbicides were investigated in the waters of the Goiana River using the ultra-efficient liquid chromatography technique coupled with triploquadrupole mass spectrometry (UPLC-MS/MS). The study was conducted from March to August 2019 and detected the presence of residues from the herbicides Ametryn, Atrazine, Diuron and Tebuthiuron during March, April and May, in concentrations ranging from 10 to 150 µg L-1. The results indicate the need to monitor surface water contamination, as current agricultural practices have an unprecedented impact on water quality and consequently on ecosystems and human health.

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Influence of Cascading River–Lake Systems on the Dynamics of Nutrient Circulation in Catchment Areas

Water ◽

10.3390/w12041144 ◽

2020 ◽

Vol 12 (4) ◽

pp. 1144

Author(s):

Angela Kuriata-Potasznik ◽

Sławomir Szymczyk ◽

Andrzej Skwierawski

Keyword(s):

Water Quality ◽

Surface Waters ◽

Aquatic Ecosystems ◽

Environmental Stressors ◽

Anthropogenic Factors ◽

Specific Load ◽

Lake System ◽

Catchment Areas ◽

Significant Research ◽

Lake Systems

Matter circulates in nature constantly, between terrestrial and aquatic ecosystems, exchanging elements between the biotope and biocenosis. Each aquatic ecosystem is resistant to a specific load, above which its degradation occurs. It seems that the resistance of cascade reservoirs is higher than that of drainless reservoirs. Changes taking place in one part of the river–lake system cause disturbances in the dynamics of nutrient circulation in another. Rivers supplying water to lakes in a river–lake system have a significant impact on their water quality and on the spatial distribution of pollutants in their bottom sediments and in macrophytes located along their route. The assimilation capabilities of cascading river–lake systems result from their reaction to environmental stressors in the form of anthropogenic factors. They act as natural biogeochemical barriers, limiting the transport of pollutants outside ecosystems. In-depth knowledge of the processes taking place in the river–lake systems enables analyses aimed at forecasting the directions and intensity of these changes and predicting the response of the river–lake systems to the loads from the catchment areas. The collected information makes it possible to create simulations of processes occurring in river–lake systems, which allows for effective action to be taken to protect surface waters. This article provides an overview of available literature, presenting significant research results which enable an understanding of these processes.

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Análisis de residuos de plaguicidas en el agua superficial de la cuenca del río Ayuquila-Armería, México

REVISTA TERRA LATINOAMERICANA ◽

10.28940/terra.v37i2.462 ◽

2019 ◽

Vol 37 (2) ◽

pp. 151 ◽

Cited By ~ 1

Author(s):

Brian Arturo Rodríguez Aguilar ◽

Luis Manuel Martínez Rivera ◽

Alejandro Aarón Peregrina Lucano ◽

Claudia Irene Ortiz Arrona ◽

Oscar Gilberto Cárdenas Hernández

Keyword(s):

Mass Spectrometry ◽

Water Quality ◽

Surface Waters ◽

Agricultural Production ◽

Current System ◽

Intensive Agriculture ◽

Rainfed Agriculture ◽

Chemical Products ◽

Del Rio ◽

Agricultural Areas

The application of chemical products for pest control is one of the most widely used methods in agriculture worldwide despite their adverse effects on humans and the environment. This is a topic of interest due to the growing number of chemical products and their toxicity. The objectives of this research were to identify the most commercialized pesticides in the Ayuquila-Armería River basin (Mexico) and to determine their concentration in the surface water of the basin. The hypothesis of this work was that the current system of agricultural production in the basin is causing degradation of water quality due to the presence of a wide variety of pesticides. For the f irst objective, we visited 27 outlets of pesticides located in the main municipal capitals within the basin, obtaining a total of 143 commercialized active ingredients, mainly of chemical origin. For the second objective, we carried out two samplings in the dry season and two in the rainy season, in 30 sites distributed within the basin. The sampling sites were chosen in a directed way according to the problem of existing contamination and trying to cover the largest agricultural areas within the basin. The analyses were carried out through liquid chromatography coupled to mass-mass spectrometry. The results showed that 66% of the samples contained at least one pesticide. The most frequent pesticides were ametrine, dimethoate and diazinon. The sites that presented the highest number of pesticides in the four samplings were Palo Blanco, Antes Manantlán, Tuxcacuesco and Ayuquila. The sites near the area of intensive agriculture had a higher number of pesticides than those located in areas with rainfed agriculture. This study is the f irst to analyze the presence of pesticides in surface waters of the basin.

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WATER QUALITY IN THE NORTH MADURA : IS IT SUITABLE FOR VANNAMEI SHRIMP FARMING OR NOT?

AQUASAINS ◽

10.23960/aqs.v8i1.p753-758 ◽

2019 ◽

Vol 8 (1) ◽

pp. 753

Author(s):

Muhammad Browijoyo Santanumurti ◽

Syifania Hanifah Samara ◽

Daruti Dinda Nindarwi

Keyword(s):

Water Quality ◽

Shrimp Farming ◽

Average Temperature ◽

The North ◽

The World ◽

Average Water ◽

Quality Aspect ◽

The Government ◽

Aquaculture Development

Indonesia is one of the countries with the highest potential and production of vannamei shrimp (Litopenaues vannamei) in the world. Therefore, the government continues to improve theactivity of vannamei shrimp farming continuously. This study aimed to determine whether the water quality of the waters in Larangan Glintong Village, Bangkalan-Madura, East Java was suitable for vannamei shrimp farming activities. Water quality was one of the keys for successful vannamei shrimp farming since it could affect the metabolism, reproduction, osmoregulation and stress of the organism. The parameter water quality used in this study was salinity, temperature, and pH. This research was a water quality survey that was carried out for three months (March-May). The result showed that the average water salinity was 30.5 ppt. The average DO and brightness showed 7.02 mg/l and 30.69 cm. The average temperature at there was 29.41oC while the pH valued showed 8.13. The It could be concluded from water quality aspect that pond in Larangan Glintong Village, Bangkalan-Madura could be used for vannamei aquaculture development.

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