Water and sediment dynamics through the wetlands and coastal water bodies of large river deltaic plains

Author(s):  
M. A. Allison ◽  
A. Kolker ◽  
E. Meselhe
2002 ◽  
Vol 2 (3) ◽  
pp. 131-138 ◽  
Author(s):  
D.L. Craig ◽  
H.J. Fallowfield ◽  
N.J. Cromar

A laboratory based microcosm study utilising intact non-sterile sediment cores was undertaken to determine the survival of the faecal indicator organisms Escherichia coli, Enterococcus faecium and somatic coliphage in both recreational coastal water and sediment. Overlying water was inoculated with the test organisms and incubated at 10°C, 20°C or 30°C. E. coli, enterococcus and coliphage were enumerated from the water column and sediment by the membrane filtration method, Enterolert (IDEXX Laboratories) and the double-agar overlay methods respectively on days 0, 1, 2, 7, 14 and 28 following inoculation. It was demonstrated that for all organisms, greater decay (k; d-1) occurred in the water column compared to sediment. Sediment characteristics were found to influence decay, with lowest decay rates observed in sediment consisting of high organic carbon content and small particle size. Decay of E. coli was significantly greater in both the water column and sediment compared with enterococcus and coliphage under all conditions. Decay of enterococcus was found to closely resemble that of coliphage decay. Survival of all organisms was inversely related to temperature, with greatest decay at 30°C. However, increased temperature had a less significant impact on survival of enterococcus and coliphage compared with E. coli. The importance of this study for estimating risk from recreational exposure is great if some pathogenic microorganisms behave similarly to the organisms tested in this study. In particular if survival rates of pathogens are similar to enterococcus and coliphage, then their ability to accumulate in coastal sediment may lead to an increased risk of exposure if these organisms are resuspended into the water column due to natural turbulence or human recreational activity.


2010 ◽  

This volume presents the Proceedings of the International Conference of the WADI project held in Malta, 5-8 November 2008, at the end of the project itself. The WADI project funded by the European Commission, was carried out from 2006 to 2008 by a consortium of researchers from European and Mediterranean countries, and was focused on coastal water bodies, aiming at integrating water management and the needs of all stakeholders. The Proceedings illustrate some of the outcomes of the WADI project that focused on case studies represented by water bodies in the Mediterranean coastal area.


2018 ◽  
Vol 23 (12) ◽  
pp. 05018020 ◽  
Author(s):  
George L. Mamede ◽  
Andreas Guentner ◽  
Pedro H. A. Medeiros ◽  
José Carlos de Araújo ◽  
Axel Bronstert

2018 ◽  
Vol 644 ◽  
pp. 1557-1572 ◽  
Author(s):  
Saskia Keesstra ◽  
Joao Pedro Nunes ◽  
Patricia Saco ◽  
Tony Parsons ◽  
Ronald Poeppl ◽  
...  

2017 ◽  
Vol 114 (2) ◽  
pp. 664-670 ◽  
Author(s):  
Andreas C Bryhn ◽  
Peter H Dimberg ◽  
Lena Bergström ◽  
Ronny E Fredriksson ◽  
Johanna Mattila ◽  
...  

2013 ◽  
Vol 165 ◽  
pp. 1343-1348 ◽  
Author(s):  
Joel Azzopardi ◽  
Alan Deidun ◽  
Fabrizio Gianni ◽  
Adam Pierre Gauci ◽  
Berta Angulo Pan ◽  
...  

1979 ◽  
Vol 17 (7) ◽  
pp. 1585 ◽  
Author(s):  
Harry H. Carter ◽  
Tavit O. Najarian ◽  
Donald W. Pritchard ◽  
Robert E. Wilson
Keyword(s):  

1985 ◽  
Vol 6 (1-11) ◽  
pp. 123-128 ◽  
Author(s):  
Lulz Drude de Lacerda ◽  
Wolfgang Christian Pfeiffer ◽  
Marlene Fiszman

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