scholarly journals Effects of water quality on the richness of aquatic plants in irrigation ponds in an agricultural area containing many citrus orchards

2008 ◽  
Vol 69 (1) ◽  
pp. 1-23
Author(s):  
Hisanori KAGAWA ◽  
Masaki SHIKATA ◽  
Mayumi KIDA ◽  
Michiko SHIMODA
Keyword(s):  
Water Quality ◽  
Aquatic Plants ◽  
Agricultural Area ◽  
Citrus Orchards

scholarly journals Evaluation of Seasonal Groundwater Quality Changes Associated with Groundwater Pumping and Level Fluctuations in an Agricultural Area, Korea

Water ◽  
2020 ◽  
Vol 13 (1) ◽  
pp. 51
Author(s):  
Kyoochul Ha ◽  
Eunhee Lee ◽  
Hyowon An ◽  
Sunghyun Kim ◽  
Changhui Park ◽  
...  
Keyword(s):  
Water Quality ◽  
Groundwater Quality ◽  
Groundwater Level ◽  
Irrigation Water ◽  
Agricultural Area ◽  
Water Type ◽  
Quality Changes ◽  
Groundwater Pumping ◽  
Rice Paddies ◽  
Groundwater Levels

This study was conducted to evaluate seasonal groundwater quality due to groundwater pumping and hydrochemical characteristics with groundwater level fluctuations in an agricultural area in Korea. Groundwater levels were observed for about one year using automatic monitoring sensors, and groundwater uses were estimated based on the monitoring data. Groundwater use in the area is closely related to irrigation for rice farming, and rising groundwater levels occur during the pumping, which may be caused by the irrigation water of rice paddies. Hydrochemical analysis results for two separate times (17 July and 1 October 2019) show that the dissolved components in groundwater decreased overall due to dilution, especially at wells in the alluvial aquifer and shallow depth. More than 50% of the samples were classified as CaHCO3 water type, and changes in water type occurred depending on the well location. Water quality changes were small at most wells, but changes at some wells were evident. In addition, the groundwater quality was confirmed to have the effect of saltwater supplied during the 2018 drought by comparison with seawater. According to principal component analysis (PCA), the water quality from July to October was confirmed to have changed due to dilution, and the effect was strong at shallow wells. In the study areas where rice paddy farming is active in summer, irrigation water may be one of the important factors changing the groundwater quality. These results provide a qualitative and quantitative basis for groundwater quality change in agricultural areas, particularly rice paddies areas, along with groundwater level and usage.

scholarly journals Analysis and Prediction on Water Quality Improvements by Aquatic Plants in a Storage

2013 ◽  
Vol 13 (6) ◽  
pp. 439-446 ◽  
Author(s):  
Eung Seok Kim ◽  
Kuy Bum Sim ◽  
Gunhui Chung ◽  
Hyun Il Choi
Keyword(s):  
Water Quality ◽  
Aquatic Plants ◽  
Quality Improvements

scholarly journals Avaliação de bacia hidrográfica por alunos do Ensino Fundamental: contribuição ao ensino dos recursos hídricos

2016 ◽  
Vol 11 (5) ◽  
pp. 1056
Author(s):  
Cheila Flávia De Praga Baião ◽  
Getulio Teixeira Batista
Keyword(s):  
Water Quality ◽  
Elementary School Students ◽  
Water Flow ◽  
Aquatic Plants ◽  
Riparian Vegetation ◽  
Rapid Assessment ◽  
Educational Tool ◽  
School Students ◽  
Assessment Protocol ◽  
Paraíba Do Sul River

This work developed and tested a rapid assessment protocol (RAP) in a watershed of the Paraíba do Sul River Basin, to be applied by elementary school students. The study was conducted in a public school of São José dos Campos (SP), with 60 students of the 6th grade (n = 30) and 7th grade (n = 30). The protocol developed includes 12 parameters with text consistent with student levels and with illustrations of the variables of each parameter. The parameters are the type of usage of the stream margins, erosion and siltation, presence of sewage, presence of aquatic plants, water odor, water oiliness, water transparency, type of bottom, rapids and water flow, garbage presence, the presence of animals, and the presence of riparian vegetation. The results showed that 65% of the students understood all parameters and showed great interest in the proposed protocol; the others needed to better understand the parameters of erosion and siltation, presence of aquatic plants, rapids, water flow and presence of riparian vegetation. It was found that the developed RAP was appropriate and can contribute as an educational tool for the study of water quality.

scholarly journals Treatment Technology of Microbial Landscape Aquatic Plants for Water Pollution

2021 ◽  
Vol 2021 ◽  
pp. 1-12
Author(s):  
Ming Hu ◽  
Lei Li
Keyword(s):  
Water Pollution ◽  
Water Quality ◽  
Aquatic Plants ◽  
Rapid Development ◽  
Water Bodies ◽  
Control Group ◽  
Human Beings ◽  
Treatment Technology ◽  
Blank Control Group ◽  
Microbial Inoculant

With the rapid development of industrial and agricultural production, the rapid growth of population, and the acceleration of urbanization, the problem of water pollution is becoming more and more serious. Water shortages and pollution disrupt the balance of ecosystems and seriously limit people’s health and rapid economic development. Nowadays, the method of repairing sewage bodies using microbial landscape aquatic plants is attracting more and more attention, and it is a big challenge to maintain the sustainable development of human beings and nature. This paper uses floating rafts to combine microorganisms and landscape aquatic plants to conduct sewage treatment experiments. According to microorganisms, landscape aquatic plants absorb nutrients in the water body, examine the changes in water quality during the restoration of microorganisms’ landscape aquatic plants, and establish the growth of microorganisms’ landscape aquatic plants. The relationship with changes in water quality aims to provide a theoretical basis for the treatment of slow-flowing water bodies such as lakes, reservoirs, large artificial ponds, and rivers. In this paper, the experiments are divided into four groups (A (experimental sewage + microbial inoculant), B (experimental sewage + plant), C (experimental sewage + microbial inoculant + plant), and D (experimental sewage)). It can be divided into the total nitrogen content, total phosphorus content, and COD value data, and chromaticity detection of each group of the test is continuously monitored weekly to comprehensively detect and observe the repair effect on contaminated water bodies. The experiment proved that the water quality of the three treatment groups was significantly clearer than that of the blank control group, and its clarity: microorganism + plant > microorganism > plant > blank control group. This shows that the combination of microorganisms and landscape aquatic plants can effectively reduce the various pollutants contained in sewage and reduce the color of sewage. Treating sewage using plant technology that combines microorganisms is feasible and promising.

Effects of anthropogenic disturbance on 13C and 15N of aquatic plants from a semiarid wetland

2019 ◽  
Author(s):  
Lilia Serrano-Grijalva ◽  
Raul Ochoa-Hueso ◽  
Raquel Sánchez-Andrés ◽  
Santos Cirujano ◽  
Salvador Sánchez-Carrillo
Keyword(s):  
Water Quality ◽  
Aquatic Plants ◽  
Vascular Plants ◽  
Environmental Changes ◽  
Anthropogenic Impacts ◽  
Vascular Plant ◽  
Regional Scale ◽  
Nitrogen And Phosphorus ◽  
Isotopic Signatures ◽  
La Mancha

Wetlands provide a great variety of environmental services to society, but they are currently globally threatened by human activities. We evaluated the effects of anthropogenic disturbances on the ecological quality of semiarid wetlands from central Spain (La Mancha Húmeda) through the natural abundance of isotopes (13C and 15N) of aquatic plants. We measured water quality and also compiled historical information about land-use and socioeconomic characteristics at local (100 m around the lagoon) and regional (sub-basin) scales. We then related this information to isotopic signatures of three types of aquatic plants: (i) charophytes, (ii) marginal aquatic macrophytes and (iii) vascular plants. Aquatic plants exposed to high levels of nitrogen showed very low δ13C values, consistent with negative physiological effects. Vascular aquatic plants were the group that best reflected the effects of nutrient enrichment in wetlands and lagoons through significant correlations between their δ15N values and total nitrogen and phosphorus concentrations in water. Demographic factors did not exert a clear influence on aquatic plant isotopic signatures, although we observed inverse correlations between the coverage of natural vegetation at regional scale and δ13C of marginal plants and δ15N of vascular plants. Furthermore, the isotopic signatures of Phragmites australis, present in 96% of the studied la-goons, were not significantly correlated with any of the environmental quality variables evaluated. Although δ13C signatures of Typha dominguensis and Cladium mariscus increased significantly due to changes in water quality, their narrow isotopic variability at the regional scale limits their use as a bioindicators of environmental changes in this wetland system. Finally, we propose the use of δ15N measured in the vascular plant Salicornia sp. as the most suitable bio-indicator of anthropogenic impacts in La Mancha Húmeda region, a highly emblematic system of semiarid Mediterranean wetlands that is unique in the Mediterranean region of Europe.

scholarly journals Influence of inlet water on the biotic and abiotic variables in a fish pond

2016 ◽  
Vol 77 (2) ◽  
pp. 277-283 ◽  
Author(s):  
L. H. Sipaúba-Tavares ◽  
P. A. Durigan ◽  
F. A. Berchielli-Morais ◽  
R. N. Millan
Keyword(s):  
Water Quality ◽  
Aquatic Plants ◽  
Zooplankton Community ◽  
Abundant Species ◽  
Fish Pond ◽  
Nutrient Load ◽  
Zooplankton Species ◽  
Farm Ponds ◽  
Untreated Water ◽  
Abiotic Variables

Abstract The effects of treated and untreated water inlets with macrophytes on the improvement of water quality and zooplankton community were evaluated in a fish pond with continuous water flow. Water and zooplankton samples were retrieved at four sites during nine months. There were differences (p<0.01) between inlet water from fish pond and inlet water from canal with macrophytes, featuring higher concentrations of nutrient load, mainly TAN and TP in the former. The inlet water from fish pond contained a higher number of abundant species (9 species), whilst the water supply from the canal with macrophytes had a greater richness (31 species) of zooplankton species. Results showed that inlet water without macrophytes directly affected the characteristics of the water column and the dominance of zooplankton species such as Thermocyclops decipiens, and greater abundance of Rotifera species. Since aquatic plants in the inlet water of fish pond analyzed showed lower allochthonous material loads from the previous fish pond, the management adopted with macrophytes may be applied to avoid eutrophication risks, common in farm ponds.

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