Occurrence of salmonid parr and eel in relation to water quality in small streams on the west coast of Sweden

1986 ◽  
Vol 30 (3-4) ◽  
pp. 665-671 ◽  
Author(s):  
E. Degerman ◽  
J -E Fogelgren ◽  
B. Tengelin ◽  
E. Th�rnel�f
Keyword(s):  
Water Quality ◽  
West Coast ◽  
The West ◽  
Small Streams

Occurrence of Salmonid Parr and Eel in Relation to Water Quality in Small Streams on the West Coast of Sweden

1986 ◽  
pp. 665-671
Author(s):  
E. Degerman ◽  
J.-E. Fogelgren ◽  
B. Tengelin ◽  
E. Thörnelöf
Keyword(s):  
Water Quality ◽  
West Coast ◽  
The West ◽  
Small Streams

Water quality simulation of sewage impacts on the west coast of Mumbai, India

2010 ◽  
Vol 62 (2) ◽  
pp. 279-287 ◽  
Author(s):  
R. Vijay ◽  
P. J. Khobragade ◽  
R. A. Sohony
Keyword(s):  
Water Quality ◽  
West Coast ◽  
Current Data ◽  
The West ◽  
Water Quality Simulation ◽  
Hydrodynamic Behaviour ◽  
Treated Effluent ◽  
Treatment Facilities ◽  
The Impact

Most coastal cities use the ocean as a site of waste disposal where pollutant loading degrades the quality of coastal waters. Presently, the west coast of Mumbai receives partially treated effluent from wastewater treatment facilities through ocean outfalls and discharges into creeks as well as wastewater/sewage from various open drains and nallahs which affect the water quality of creek and coastal water. Therefore, the objective of this paper is to simulate and assess the hydrodynamic behaviour and water quality due to impact of sewage and wastewater discharges from the west coast of Mumbai. Hydrodynamics and water quality were simulated based on present conditions and validated by using measured tide, current data and observed DO, BOD and FC. Observed and simulated results indicated non compliance to standards in Malad, Mahim creeks and the impact zones of ocean outfalls. The developed model could be used for generating various conditions of hydrodynamics and water quality considering the improvement in wastewater collection systems, treatment levels and proper disposal for proper planning and management of creeks and coastal environment.

scholarly journals Determination of Bathing Water Quality Using Thermal Images Landsat 8 on the West Coast of Tangier: Preliminary Results

2019 ◽  
Vol 11 (8) ◽  
pp. 972 ◽  
Author(s):  
El Khalil Cherif ◽  
Farida Salmoun ◽  
Francisco Javier Mesas-Carrascosa
Keyword(s):  
Water Quality ◽  
West Coast ◽  
River Mouth ◽  
Decision Makers ◽  
Landsat 8 ◽  
Bacterial Concentration ◽  
The West ◽  
Bathing Water ◽  
Bathing Water Quality

Bathing water quality has been monitored in the west coast of Tangier, Morocco due to increased urban and industrial discharge through the Boukhalef river, using in-situ bacteriological measurements which demand high economical and temporal costs. In this study, Landsat 8 Thermal Infrared Sensor (TIRS) images were used as an alternative to the classical method, for determining bathing water quality to help decision makers obtain up-to-date and cost-effective information for coastal environment protection. For this purpose, during spring and summer 2017, seven sampling points were examined in terms of bacteriological parameters: Total Coliforms (TC), Faecal Coliforms (FC), Intestinal Enterococci (IE) and Escherichia coli (E. coli). Also, a spatial-temporal analysis was performed in this temporal window to detect temperature anomalies and their spatial distribution along the coastal bathing area. In addition, a relationship between in-situ bacteriological parameter measurements and temperature from satellite images was analyzed. The results of the water temperature distribution showed the highest values next to the Boukhalef river mouth, as well as the poorest water quality according to in-situ measurements, while lower values and better water quality status were observed moving away from the Boukhalef river mouth. The relationship between water temperature and bacterial concentration showed a high correlation coefficient (R2 = 0.85). Consequently, the model development approaches used may be useful in estimating bacterial concentration in coastal bathing areas and can serve to create a monitoring system to support decision makers in the protection actions of the coast.

scholarly journals COVID-19 Pandemic Consequences on Coastal Water Quality Using WST Sentinel-3 Data: Case of Tangier, Morocco

Water ◽  
2020 ◽  
Vol 12 (9) ◽  
pp. 2638
Author(s):  
El Khalil Cherif ◽  
Martin Vodopivec ◽  
Nezha Mejjad ◽  
Joaquim C.G. Esteves da Silva ◽  
Simona Simonovič ◽  
...  
Keyword(s):  
Water Quality ◽  
West Coast ◽  
Positive Impact ◽  
River Mouth ◽  
High Water ◽  
Coastal Environment ◽  
The West ◽  
Water Surface Temperature ◽  
Decision Making Processes ◽  
Bathing Water Quality

The west coast of Tangier, in northern Morocco, has been affected by industrial wastewater discharge that reaches the ocean through the Boukhalef river. Therefore, the Jbila and Sidikacem beaches near to the Boukhalef river mouth have been classified as polluted for many years. With the aim of determining the COVID-19 pandemic consequences on the Tangier coastal environment, a linear model using Sentinel 3 water surface temperature (WST) has been tested in several locations. Data from April 2019 and April 2020, before and during the COVID-19 pandemic related emergency status in Morocco, were compared. The results from April 2019 showed high WST values and consequently, the poorest water quality in the sites closest to the Boukhalef river mouth. On the other hand, the results from April 2020 showed normal WST values and high water quality in the same study area. These results illustrate the usefulness of Sentinel 3 WST for the estimation of bathing water quality on the west coast of Tangier. The study shows the positive impact of the COVID-19 pandemic consequences on the coastal environment quality in the study area and indicates the importance of decreasing the industrial discharge on the west coast of Tangier. The same methodology could be used in decision-making processes and to reduce cost, time and human resources for coastal monitoring systems. We demonstrate the potential of using the Sentinel 3 data for coastal waters monitoring, as well as the need for stricter controls of pollutant discharges into the world’s rivers.

Ecology of small streams on the west coast of the South Island, New Zealand

1988 ◽  
Vol 23 (3) ◽  
pp. 1427-1431
Author(s):  
M. J. Winterbourn ◽  
K. J. Collier ◽  
A. K. Graesser
Keyword(s):  
New Zealand ◽  
West Coast ◽  
The South ◽  
The West ◽  
Small Streams

The Megalithic Tomb of Pedra Branca, Portugal. Preliminary Report

1975 ◽  
Vol 41 ◽  
pp. 167-178 ◽  
Author(s):  
O. da Veiga Ferreira ◽  
G. Zbyszewski ◽  
M. Leitao ◽  
C. T. North ◽  
H. Reynolds de Sousa
Keyword(s):  
Atlantic Ocean ◽  
Sea Level ◽  
West Coast ◽  
Preliminary Report ◽  
Rough Terrain ◽  
The South ◽  
The West ◽  
The North ◽  
Small Streams ◽  
Local Construction

The megalithic tomb of Pedra Branca lies at Montum, on the west coast of Portugal about 140 kilometers south of Lisbon by road (fig. 1). The tomb is the first in Portugal to have yielded Beaker graves overlying earlier burials; prior to its discovery, no Beaker remains had ever been noted further south than Palmela, in the estuary of the Sado river, approximately 40 kilometers from Lisbon. The tomb is situated on the top of a small hillock 100 m above sea level, separated from the Atlantic Ocean by a fertile undulating plain about 5 km in width. The Lake of Melides lies to the north and, to the east, the hills of Grandola rise steeply to an altitude of 300 m; an expanse of rough terrain stretches to the south, ravined by various small streams which flow into the Lake of Santo André on the coast.When the tomb was discovered by surveyors of the Geological Services of Portugal, it was already very badly damaged; all the orthostats had been broken for use in local construction and part of the circular covering mound had already been ploughed under. The Services therefore, decided that a salvage campaign was called for, and a team made up of the authors, was invited to carry it out with funds granted by the Calouste Gulbenkian Foundation.

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