Effects of Hydrologic Alterations on the Ecological Quality of River Ecosystems

2009 ◽  
pp. 15-39 ◽  
Author(s):  
Sergi Sabater ◽  
Klement Tockner
Keyword(s):  
Ecological Quality ◽  
River Ecosystems ◽  
Hydrologic Alterations

Hydrology and the ecological quality of Scottish river ecosystems

2002 ◽  
Vol 294 (1-3) ◽  
pp. 131-159 ◽  
Author(s):  
D.J Gilvear ◽  
K.V Heal ◽  
A Stephen
Keyword(s):  
Ecological Quality ◽  
River Ecosystems

scholarly journals Change in ecological water quality of West Dvina River under the impact of urban waste water

2021 ◽  
Vol 66 (2) ◽  
pp. 135-146
Author(s):  
V. M. Baitchorov ◽  
Y. G. Giginyak ◽  
M. D. Moroz ◽  
I. J. Giginyak ◽  
E. V. Korzun
Keyword(s):  
Negative Impact ◽  
Aquatic Organisms ◽  
Chemical Pollution ◽  
Ecological Quality ◽  
River Ecosystems ◽  
Treatment Facilities ◽  
Physical And Chemical ◽  
The Impact ◽  
Water Purity

In determining the quality of surface waters and, first of all, rivers, along with physical and chemical pollution, the analysis of the hydrobiological component of river ecosystems is becoming increasingly important. The aim of the work was to assess the ecological quality of the river ecosystems from the impact of wastewater discharge from the cities of Vitebsk, Polotsk and Novopolotsk on the Western Dvina River based on the macrozoobenthos community. The studied river sections are inhabited by rare for Belarus and protected in Europe species of aquatic organisms. A relatively high abundance (from 30 to 80 %) of the group of rheophilic species Plecoptera, Ephemeroptera, and Trichoptera was noted, which represent the three highest priority indicator groups of aquatic organisms. Biotic indices and the water purity class of the r. Western Dvina were determined. In accordance with the EU Water Framework Directive, the water purity class at the studied stations has a good and high value. It is concluded that the negative impact of wastewater from the cities of Vitebsk, Polotsk and Novopolotsk has a very local significance and weakly affects the biota and the ecological quality of the water of the Western Dvina River already at a distance of 18 km. below the discharge of water from the treatment facilities of the Novopolotsk refinery.

An ecosystem-based approach to evaluate the ecological quality of Mediterranean undersea caves

2015 ◽  
Vol 54 ◽  
pp. 137-152 ◽  
Author(s):  
Pierre-Alexandre Rastorgueff ◽  
Denise Bellan-Santini ◽  
Carlo Nike Bianchi ◽  
Simona Bussotti ◽  
Pierre Chevaldonné ◽  
...  
Keyword(s):  
Ecological Quality

Regenerating the Socio-Ecological Quality of Urban Streams: The Potential of a Social Learning Approach

2021 ◽  
pp. 67-98
Author(s):  
Daniele Tubino P. de Souza ◽  
Edson Grandisoli ◽  
Pedro Roberto Jacobi ◽  
Arjen E. J. Wals
Keyword(s):  
Social Learning ◽  
Urban Streams ◽  
Learning Approach ◽  
Ecological Quality

scholarly journals Forest ecological monitoring of the Shiyang River basin based on Google Earth Engine

2021 ◽  
Vol 932 (1) ◽  
pp. 012011
Author(s):  
Y Wang
Keyword(s):  
River Basin ◽  
Terrestrial Ecosystems ◽  
Google Earth ◽  
Ecological Environment ◽  
Ecological Quality ◽  
Natural Forests ◽  
Shiyang River Basin ◽  
Natural Factors ◽  
Google Earth Engine

Abstract The Shiyang River basin is a typical inland arid region and one of the most fragile and sensitive areas of terrestrial ecosystems in China, and it is important to understand its ecological changes in a timely and accurate manner. This article selects the Shiyang River basin forest as the research area and uses Google Earth Engine (GEE) to evaluate and monitor the ecological environment quality of the Shiyang River basin from 1990 to 2020. The geographical detector model (GDM) was also used to analyse the sensitivity of the forest ecological environment to three natural factors: elevation, temperature and altitude. The results showed that the ecological quality of the natural forest is significantly better than that of the man-made forest area, and the ecological quality grade is higher. The forest change area RSEI has a large annual variation in ecological quality and is vulnerable to external factors. Among the influencing natural factors, the sensitive factors of precipitation and altitude are both greater than 84%. The temperature sensitivity of natural forests is stronger than that of man-made forests, ranging from 66% to 92% overall.

Study on the quality improvement on black land in Northeast China under the environment of sustainable agricultural development

Kybernetes ◽  
2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Yun Teng ◽  
Boyuan Pang ◽  
Xiangyu Guo
Keyword(s):  
Soil Quality ◽  
Environmental Quality ◽  
Northeast China ◽  
Agricultural Development ◽  
Ecological Quality ◽  
Content Type ◽  
Management Quality ◽  
Black Land

PurposeThe authors are committed to providing the Chinese government with a foundation for making decisions that will protect black land and ensure long-term agricultural development.Design/methodology/approachUsing the grounded theory approach, this study investigates the influencing factors affecting the quality of black land in Northeast China and proposes a hypothetical model for the mechanism of the influencing factors on the quality of black land in Northeast China.FindingsThe factors influencing the quality of black land include not only soil quality, ecological quality and environmental quality, but also economic quality and management quality, and can be classified into five categories. There are complex influence relationships between various factors and black land quality, with soil quality, ecological quality, environmental quality and management quality having a positive influence on economic quality. Soil quality, ecological quality and environmental quality are all improved as a result of good management. Black land quality is influenced positively by environmental quality, economic quality and management quality.Research limitations/implicationsThe quality of black land is a major concern in terms of food production and long-term agricultural development. The black land in Northeast China was chosen as the subject of this study, and the research findings have some limitations. The next step will be to expand from studying the black land in Northeast China to the black land worldwide.Originality/valueIn Northeast China, the quality of the five dimensions of black land must be improved in a coordinated and consistent manner.

Contribution to the ecological quality of Aliakmon river (Macedonia, Greece): a multivariate approach

1999 ◽  
pp. 47-58
Author(s):  
M. Lazaridou-Dimitriadou ◽  
V. Artemiadou ◽  
G. Yfantis ◽  
S. Mourelatos ◽  
Y. Mylopoulos
Keyword(s):  
Ecological Quality ◽  
Multivariate Approach
Sign in / Sign up

Export Citation Format

Share Document