New Zealand's National River Water Quality Network: Long‐term trends in macroinvertebrate communities

2000 ◽  
Vol 34 (2) ◽  
pp. 289-302 ◽  
Author(s):  
Mike R. Scarsbrook ◽  
Ian K. G. Boothroyd ◽  
John M. Quinn
Keyword(s):  
Water Quality ◽  
River Water ◽  
River Water Quality ◽  
Macroinvertebrate Communities ◽  
Long Term Trends

scholarly journals River Water Quality and its Relation with Air Quality: A Long-Term Case Study in a Remote and Pristine NW Italian Headwater Catchment

2017 ◽  
Vol 5 (1) ◽  
pp. 35-47 ◽  
Author(s):  
Marco Casazza ◽  
Franca Maraga ◽  
Gengyuan Liu ◽  
Massimiliano Lega ◽  
Laura Turconi ◽  
...  
Keyword(s):  
Water Quality ◽  
Air Quality ◽  
River Water ◽  
River Water Quality ◽  
Headwater Catchment

Long-term Dynamics of the River Water Quality in the Northern Dvina Basin (Northwestern Russia)

2018 ◽  
Vol 45 (S2) ◽  
pp. 93-98
Author(s):  
O. S. Reshetnyak ◽  
V. N. Reshetnyak ◽  
K. G. Vlasov ◽  
K. G. Myagkova
Keyword(s):  
Water Quality ◽  
River Water ◽  
River Water Quality ◽  
Northern Dvina Basin ◽  
Northwestern Russia

Analysis of long-term and seasonal river water quality changes in Latvia☆

1992 ◽  
Vol 26 (9) ◽  
pp. 1203-1216 ◽  
Author(s):  
V TSIRKUNOV ◽  
A NIKANOROV ◽  
M LAZNIK ◽  
Z DONGWEI
Keyword(s):  
Water Quality ◽  
River Water ◽  
River Water Quality ◽  
Quality Changes

scholarly journals Bathing Activities and Microbiological River Water Quality in the Paris Area: A Long-Term Perspective

2019 ◽  
Author(s):  
Jean-Marie Mouchel ◽  
Françoise S. Lucas ◽  
Laurent Moulin ◽  
Sébastien Wurtzer ◽  
Agathe Euzen ◽  
...  
Keyword(s):  
Water Quality ◽  
River Water ◽  
River Water Quality ◽  
Paris Area

Estimation and comparison of nitrogen loads and attenuation in agricultural catchments of Japan and Korea

2007 ◽  
Vol 56 (1) ◽  
pp. 105-113
Author(s):  
S. Itahashi ◽  
M.-C. Seo ◽  
M. Takeuchi
Keyword(s):  
Water Quality ◽  
River Water ◽  
Time Lag ◽  
Water Quality Monitoring ◽  
Geographical Information ◽  
Agricultural Catchments ◽  
Nitrogen Loads ◽  
Long Term Trends ◽  
The Relationship

To help in clarifying the relationship between the time lag and attenuation of nitrogen (N) loads generated in agricultural catchments, long-term trends in activities that generate N loads and in environmental N loads were estimated in catchments in Japan and Korea dominated by non-point-source emissions. Our approach used statistical data and geographical information system software to analyze pollutant loads. The method was successful in both countries because of the availability of well-developed statistics, geographical information, and weather and water quality monitoring systems, and the accumulation of research data concerning the generation of N loads and the fate of N in soils. Comparison of environmental loads with the loads observed in river water at the outlet of each catchment revealed that: (1) the effect of changes in the environmental load in a catchment appeared almost immediately in the river water quality in Korea, but did not appear clearly even 10 years later in Japan; and (2) the strength of the attenuation appeared to be much lower in Korea than in Japan. These findings suggest that regional characteristics play important roles in the sensitivity of water quality to load-generating activities.

The Long Term Investigation of the River Danube Water Quality in the Yugoslav Section According to Microbiological Parameters

1990 ◽  
Vol 22 (5) ◽  
pp. 39-44 ◽  
Author(s):  
S. Gajin ◽  
M. Gantar ◽  
M. Matavulj ◽  
O. Petrović
Keyword(s):  
Water Quality ◽  
Enzymatic Activity ◽  
River Water ◽  
River Water Quality ◽  
Danube River ◽  
Activity Measurements ◽  
River Danube ◽  
Microbiological Parameters ◽  
Number Of Bacteria

The results of investigations of Danube river water quality in the Yugoslav section in the period from 1975 to 1988 are presented. The estimation of water quality was based on the numbers of heterotrophs, T/H ratio, and enzymatic activity. In addition, the number of bacteria of some physiological groups was determined. The results indicate that there was a deterioration of water quality in the investigated period. The number of heterotrophs was observably lower in the period from 1975 to 1978 than it has been in recent years. The constant worsening of the water quality is also evident from the the T/H ratio and enzymatic activity measurements.

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