scholarly journals A dataset of remote-sensed Forel-Ule Index for global inland waters during 2000–2018

2021 ◽  
Vol 8 (1) ◽  
Author(s):  
Shenglei Wang ◽  
Junsheng Li ◽  
Wenzhi Zhang ◽  
Chang Cao ◽  
Fangfang Zhang ◽  
...  
Keyword(s):  
Climate Change ◽  
Water Quality ◽  
Anthropogenic Activities ◽  
Colour Change ◽  
Water Quality Monitoring ◽  
Inland Waters ◽  
Optical Remote Sensing ◽  
Large Lakes ◽  
Significant Information ◽  
Water Colour

AbstractWater colour is the result of its constituents and their interactions with solar irradiance; this forms the basis for water quality monitoring using optical remote sensing data. The Forel-Ule Index (FUI) is a useful comprehensive indicator to show the water colour variability and water quality change in both inland waters and oceans. In recent decades, lakes around the world have experienced dramatic changes in water quality under pressure from both climate change and anthropogenic activities. However, acquiring consistent water colour products for global lakes has been a challenge. In this paper we present the first time series FUI dataset for large global lakes from 2000–2018 based on MODIS observations. This dataset provides significant information on spatial and temporal changes of water colour for global large lakes during the past 19 years. It will be valuable to studies in search of the drivers of global and regional lake colour change, and the interaction mechanisms between water colour, hydrological factors, climate change, and anthropogenic activities.

A geostatistical approach to optimize water quality monitoring networks in large lakes: Application to Lake Winnipeg

2012 ◽  
Vol 38 ◽  
pp. 174-182 ◽  
Author(s):  
Dan Beveridge ◽  
André St-Hilaire ◽  
Taha B.M.J. Ouarda ◽  
Bahaa Khalil ◽  
F. Malcolm Conly ◽  
...  
Keyword(s):  
Water Quality ◽  
Water Quality Monitoring ◽  
Quality Monitoring ◽  
Monitoring Networks ◽  
Large Lakes ◽  
Lake Winnipeg ◽  
Geostatistical Approach

scholarly journals Impacts Assessment of Coastal Activities on Water Quality of Upper Segment of Qua Iboe River, Akwa Ibom State, South-South, Nigeria

2020 ◽  
Vol 24 (7) ◽  
pp. 1217-1222
Author(s):  
U.E. Jonah ◽  
E.S. Iwok ◽  
H.E. Hanson
Keyword(s):  
Water Quality ◽  
Impact Assessment ◽  
Water Temperature ◽  
Anthropogenic Activities ◽  
Water Quality Monitoring ◽  
Federal State ◽  
Human Consumption ◽  
Wet Season ◽  
Mean Values ◽  
Significant Difference

A study was carried out at the supper segment of Qua Iboe River from November, 2018 to August, 2019 in four sampling stations to assess the  impacts of coastal activities on water quality. Water samples were collected monthly and analyzed using standard procedures of Associations of Official Analytical Chemist and American Public Health Association. The stations comparisons and location of significant differences were carriedout using ANOVA and Least Significant Difference (LSD) test, while paired sample t-test were employed to compare the seasonal difference. The mean ranged values of water temperature were (25.03 – 25.330C), pH (5.8 –6.6 mg/l), DO(3.11 - 5.45 mg/l), TDS (18.63 – 32.53mg/l), EC  (8.33-13.16􀀁s/cm), Turbidity (7.61 – 18.32 NTU), TSS (90.80 - 165.63 mg/L), NO3 -1(33.02 – 78.33mg/l), P04 3-(4.44 – 7.39mg/l), Cl-(43.60 – 63.21mg/l), COD(35.96 – 113.05mg/l), NH3(0.33 – 0.62 mg/l). Mean values of TSS, EC, TSS, NO3, PO4 3-, NH3 and turbidity were higher in wet season, while water temperature, pH, DO, Cl- and COD values obtained were higher in dry season. Spatial variations in parameters were ascribed to levels of  anthropogenic activities and wastes discharged within the stations; the seasonal variations were emanated from influx of wastes, and dilution as result of surface run-offs during wet season. Based on the findings, the WQI values were poor for human consumption; especially from station 2 to4.These calls for urgent attention by Federal / State Ministry Health and Environment regards to its effects on human health and consistent water quality monitoring should be put into consideration. Keywords: Impact, Assessment, Coastal activities, Water Quality, Qua Iboe River Keywords: Impact, Assessment, Coastal activities, Water Quality, Qua Iboe River

scholarly journals Impact of climate change on the hydrological dynamics of River Ganga, India

2018 ◽  
Vol 11 (1) ◽  
pp. 274-290 ◽  
Author(s):  
C. K. Jain ◽  
Surya Singh
Keyword(s):  
Climate Change ◽  
Water Quality ◽  
Ecosystem Services ◽  
Anthropogenic Activities ◽  
Research Needs ◽  
Ecological Processes ◽  
Riverine Ecosystems ◽  
Indian Context ◽  
Hydropower Potential ◽  
River Ganga

Abstract Rivers provide innumerable ecosystem services to mankind. However, anthropogenic activities have inflicted a host of pressures to the riverine ecosystems. Climate change is also one of the human induced consequences which is of serious concern. A number of studies have predicted devastating effects of climate change. In the Indian context, where a river such as the Ganga is already suffering from industrial and municipal waste disposal, unhygienic rituals, and other activities, effects of climate change may further aggravate the situation. Climate change will not only result in disasters, but effects on water quality, biodiversity, and other ecological processes also cannot be denied. In this paper, an attempt has been made to evaluate the effects of climatic change on the dynamics of River Ganga. The study focuses on the impacts on fundamental ecological processes, river water quality, effect on species composition, and hydropower potential etc. The paper also discusses management aspects and research needs for rejuvenation of the River Ganga.

Northern Water Quality Monitoring Workshop Observations, Conclusions, Recommendations

1987 ◽  
Vol 22 (4) ◽  
pp. 629-640 ◽  
Author(s):  
R.E. Kwiatkowski ◽  
B. Olding ◽  
H. Vaughan ◽  
P. Whitfield
Keyword(s):  
Water Quality ◽  
Focal Point ◽  
Water Quality Monitoring ◽  
Quality Monitoring ◽  
Harsh Environment ◽  
Inland Waters ◽  
Special Issue ◽  
The North ◽  
Research Journal ◽  
Pollution Research

Abstract Development continues to occur in the North. With development, there is the potential for ecological damage. This is particularly true in the North, with its harsh environment coupled with its fragile ecosystems. One of these systems, the aguatic ecosystem, is the focal point of this special issue of the Water Pollution Research Journal of Canada. The ten preceedinq papers were presented at the Northern Water Quality Monitoring Workshop, held in Yellowknife, May 4-7, 1987. The Workshop was organized into three basic stages. Day 1 was devoted to invited presentations from data users while days 2 to 4 were devoted to scientific presentations on: General Monitoring, Mining and Hydrocarbons. The scientific presentations were followed by Workgroup Sessions and a Plenary session daily. This paper attempts to highlight the various views and opinions, often without creditation, from the verbatim transcripts of the invited presentations (day 1), Workgroup Sessions and Plenary Sessions (days 2-4) found in Inland Waters/Land Directorate, Technical Workshop Series No. 7, Northern Water Quality Monitoring, 1988.

scholarly journals Trends in Diatom Research Since 1991 Based on Topic Modeling

2019 ◽  
Vol 7 (8) ◽  
pp. 213 ◽  
Author(s):  
Yun Zhang ◽  
Juan Tao ◽  
Jun Wang ◽  
Liuyong Ding ◽  
Chengzhi Ding ◽  
...  
Keyword(s):  
Climate Change ◽  
Water Quality ◽  
Latent Dirichlet Allocation ◽  
Anthropogenic Activities ◽  
Carbon Sources ◽  
Temporal Distribution ◽  
Climate Change Impacts ◽  
Wide Range ◽  
Aquatic Food ◽  
Basic Studies

Diatoms are fundamental carbon sources in a wide range of aquatic food webs and have the potential for wide application in addressing environmental change. Understanding the evolution of topics in diatom research will provide a clear and needed guide to strengthen research on diatoms. However, such an overview remains unavailable. In this study, we used Latent Dirichlet Allocation (LDA), a generative model, to identify topics and determine their trends (i.e., cold and hot topics) by analyzing the abstracts of 19,000 publications from the Web of Science that were related to diatoms during 1991–2018. A total of 116 topics were identified from a Bayesian model selection. The hot topics (diversity, environmental indicator, climate change, land use, and water quality) that were identified by LDA indicated that diatoms are increasingly used as indicators to assess water quality and identify modern climate change impacts due to intensive anthropogenic activities. In terms of cold topics (growth rate, culture growth, cell life history, copepod feeding, grazing by microzooplankton, zooplankton predation, and primary productivity) and hot topics (spatial-temporal distribution, morphology, molecular identification, gene expression, and review), we determined that basic studies on diatoms have decreased and that studies tend to be more comprehensive. This study notes that future directions in diatom research will be closely associated with the application of diatoms in environmental management and climate change to cope with environmental challenges, and more comprehensive issues related to diatoms should be considered.

Histological Description and Histopathology in Polypedilum sp. (Diptera: Chironomidae): A Potential Biomarker for the Impact of Mining on Tributaries

2020 ◽  
Vol 113 (5) ◽  
pp. 359-372
Author(s):  
Rosa N Grueso-Gilaberth ◽  
Keiner S Jaramillo-Timarán ◽  
Erika M Ospina-Pérez ◽  
Vinicius S Richardi ◽  
Paula A Ossa-López ◽  
...  
Keyword(s):  
Water Quality ◽  
Negative Impact ◽  
Anthropogenic Activities ◽  
Benthic Communities ◽  
Water Quality Monitoring ◽  
Neotropical Region ◽  
Mining Pollution ◽  
Target Organs ◽  
Potential Biomarker ◽  
The Impact

Abstract The Neotropical region has a wide aquatic biodiversity, which is affected by anthropogenic activities. Mining has caused a negative impact on these ecosystems, directly affecting benthic communities. Aquatic macroinvertebrates are effective bioindicators of water quality, especially Chironomidae larvae, since these show high species richness, abundance, and sensitivity to human activities. The genus Polypedilum is among the most representative of the family Chironomidae. Research on these species is focused on their abundance and dominance in water bodies. In addition, several studies have addressed alterations in the external morphology of some Chironomidae due to mining pollution (heavy metals). However, little is known about the effects of mining on the internal morphology of these species. This study provides the first histological description of different systems and organs of Polypedilum sp. larvae. Furthermore, we report histopathological alterations in larvae collected from two tributaries affected by mining, namely Toldafría and La Elvira streams located in the municipalities of Villamaría and Manizales (Caldas – Colombia). Our findings show target organs of mining pollution in a species of Polypedilum, which represent potential early-warning histopathological biomarkers with relevant implications for water quality monitoring.

The Heavy Metals Pollution Index and Water Quality Monitoring of the Zarrineh River, Iran

2019 ◽  
Vol 25 (2) ◽  
pp. 179-188 ◽  
Author(s):  
Maryam Khalilzadeh Poshtegal ◽  
Seyed Ahmad Mirbagheri
Keyword(s):  
Water Quality ◽  
Natural Waters ◽  
Anthropogenic Activities ◽  
Pollution Index ◽  
Principal Component ◽  
Water Quality Monitoring ◽  
Water Sampling ◽  
Arsenic Copper ◽  
Almost All

ABSTRACT Water pollution is the most important reason to monitor and assess water quality. The chemical, physical, and biological quality of natural waters may be affected by anthropogenic activities such as industrial, urban, and agricultural activities. In the present study, the water quality of the Zarrineh River, one of the main rivers supplying water in the northwest of Iran, was investigated. A total of 21 sites were selected for surface water sampling during spring and winter (dry and wet) seasons. The concentrations of the metals aluminum, iron, barium, chromium, arsenic, copper, manganese, nickel, selenium, lead, and zinc were determined for source partition and heavy metal pollution index (HMPI) assessment during both the spring and winter seasons. Four important dominant factors in the principal component analysis depicted, in toto, 76.22 percent of the variance, with an initial eigenvalue greater than 1. The calculated HMPI for all the seasons and sampling stations was 66, fluctuating between 30 and 170 in single water sampling sites. The results showed that almost all locations fall into the high classes of the HMPI, but below the critical pollution index limit of 100. Apart from the gold mining establishments and industrial factories, the reasons for the increased concentrations of metals in the Zarrineh River may be attributed in particular to anthropogenic and mining activities.

scholarly journals Assessment of Household Water Quality from Selected Storage Vessels used in a South-Western Rural Community, Nigeria

2021 ◽  
pp. 31-44
Author(s):  
David Bamidele Olawade ◽  
Ojima Zechariah Wada ◽  
Omotayo Asogbon ◽  
Grace O. Owojori ◽  
Adesina Olufemi Adewole
Keyword(s):  
Water Quality ◽  
Drinking Water ◽  
Anthropogenic Activities ◽  
Water Quality Monitoring ◽  
World Health ◽  
Household Water ◽  
Quality Water ◽  
Health Organization ◽  
Plastic Containers ◽  
Clay Pots

Water is an important requirement for life but its contamination via natural and anthropogenic activities is of great concern. This study determined some physicochemical parameters of drinking water from the main source (borehole), and selected storage vessels in Abimbola, Ayedaade Local Government Area, Osun State, Nigeria. About 10 household water samples were collected randomly from the 70 households in the village. The major water storage vessels used by the villagers were clay pots. Only about one-fifth of the households used plastic containers. All the physico-chemical parameters assessed were within permissible limits of the World Health Organization and Standards Organization of Nigeria’s drinking water guidelines except for Lead and nitrite. Furthermore, water stored in clay pots had significantly higher levels of Nitrate (p=0.04), Nitrite (p=0.04), Sulphate (p=0.04), Lead (p=0.03), Iron (p=0.04), and Manganese (p=0.04) than those stored in plastic containers. Results suggest that the type of storage vessels used could influence the physicochemical quality of the water stored in them. Also, basic water quality monitoring needs to be conducted routinely to ascertain and maintain high quality water supply per time.

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