Spatial and temporal variations in karst solution rates: the structure of variability

2020 ◽  
pp. 147-170
Author(s):  
D. C. Ford ◽  
J. J. Drake
Keyword(s):  
Temporal Variations ◽  
Spatial And Temporal Variations

scholarly journals Spatial and temporal variations of faecal indicator bacteria in Lake Bunyonyi, South-Western Uganda

2021 ◽  
Vol 3 (7) ◽  
Author(s):  
Alex Saturday ◽  
Thomas J. Lyimo ◽  
John Machiwa ◽  
Siajali Pamba
Keyword(s):  
Health Risks ◽  
Rank Correlation ◽  
Temporal Variations ◽  
Indicator Bacteria ◽  
Spatial And Temporal Variations ◽  
Wet Season ◽  
Recreational Waters ◽  
Faecal Indicator Bacteria ◽  
E Coli ◽  
Spearman’S Rank Correlation

AbstractBackground Microbial water quality serves to indicate health risks associated with the consumption of contaminated water. Nevertheless, little is known about the microbiological characteristics of water in Lake Bunyonyi. This study was therefore undertaken to examine the spatial and temporal variations of faecal indicator bacteria (FIB) in relation to physicochemical parameters in Lake Bunyonyi. Result The FIB concentration was consistently measured during sampling months and correlated with each other showing the presumed human faecal pollution in the lake. The highest concentration values for E. coli (64.7 ± 47.3 CFU/100 mL) and enterococci (24.6 ± 32.4 CFU/100 mL were obtained in the station close to the Mugyera trading centre. On a temporal basis, the maximum values were recorded during the rainy season in October 2019 (70.7 ± 56.5 CFU/100 mL for E. coli and 38.44 ± 31.8 CFU/100 mL for enterococci. FIB did not differ significantly among the study stations (p > 0.05) but showed significant temporal variations among the months (p < 0.05) with concentrations being significantly high in wet season than dry season (U = 794, p < 0.0001 for E. coli; U = 993.5, p = 0.008 for enterococci). Spearman’s rank correlation revealed that FIB concentrations were significantly positively correlated with turbidity and DO concentration levels (p < 0.05). Approximately 97.2% of the water samples had E. coli and enterococci concentrations levels below USEPA threshold for recreational waters. Likewise, 98.1 and 90.7% of samples recorded E. coli and enterococci counts exceeding the UNBS, APHA, WHO and EU threshold values for drinking water. Conclusion The FIB counts show that the Lake Bunyonyi water is bacteriologically unsuitable for drinking unless it is treated since the FIB pose health risks to consumers. Besides, the water can be used for recreational purposes.

Spatial and temporal variations in acoustic propagation characteristics at the new england shelfbreak front

2003 ◽  
Vol 28 (1) ◽  
pp. 129-150 ◽  
Author(s):  
J.F. Lynch ◽  
A.E. Newhall ◽  
B. Sperry ◽  
G. Gawarkiewicz ◽  
A. Fredricks ◽  
...  
Keyword(s):  
New England ◽  
Acoustic Propagation ◽  
Temporal Variations ◽  
Spatial And Temporal Variations ◽  
Propagation Characteristics

scholarly journals Spatial and temporal variations in Spain in the standardised ratio of in-hospital mortality due to colorectal cancer, 2008–2014

BMC Cancer ◽  
2019 ◽  
Vol 19 (1) ◽  
Author(s):  
J. M. García-Torrecillas ◽  
M. C. Olvera-Porcel ◽  
M. Ferrer-Márquez ◽  
F. Rubio-Gil ◽  
M J. Sánchez ◽  
...  
Keyword(s):  
Colorectal Cancer ◽  
Hospital Mortality ◽  
Temporal Variations ◽  
Spatial And Temporal Variations

Spatial and temporal variations in fish larvae assemblages of Ilha Grande National Park, Brazil

2012 ◽  
Vol 22 (1) ◽  
pp. 95-105 ◽  
Author(s):  
Tatiane M. Gogola ◽  
Paulo V. Sanches ◽  
Éder A. Gubiani ◽  
Pedro R. L. da Silva
Keyword(s):  
National Park ◽  
Fish Larvae ◽  
Temporal Variations ◽  
Spatial And Temporal Variations

scholarly journals Tibetan tectonic evolution inferred from spatial and temporal variations in post-collisional magmatism

2005 ◽  
Vol 68 (3-4) ◽  
pp. 173-196 ◽  
Author(s):  
Sun-Lin Chung ◽  
Mei-Fei Chu ◽  
Yuquan Zhang ◽  
Yingwen Xie ◽  
Ching-Hua Lo ◽  
...  
Keyword(s):  
Tectonic Evolution ◽  
Temporal Variations ◽  
Spatial And Temporal Variations
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