Halophilic Bacteriovorax (Bx), formerly known as the marine Bdellovibrio, are Gram-negative, predatory bacteria found in saltwater systems. To assess their genetic diversity and geographical occurrence, the small subunit rRNA (ssu-rRNA) gene sequences were analysed from 111 marine, salt lake and estuarine isolates recovered from 27 locations around the world. Phylogenetic analysis of these isol...

Understanding the impact of natural and anthropogenic landscape features on population connectivity is a major goal in evolutionary ecology and conservation. Discovery of dispersal barriers is important for predicting population responses to landscape and environmental changes, particularly for populations at geographic range margins. We used a landscape genetics approach to quantify the effect...

[1] The classic Ghyben‐Herzberg estimate of the depth of the freshwater‐saltwater interface together with the Dupuit approximation is a useful tool for developing analytical solutions to many seawater intrusion problems. On the basis of these assumptions, Strack (1976) developed a single‐potential theory to calculate critical pumping rates in a coastal pumping scenario. The sharp interface assu...

In aquifers subject to saline water intrusion, the mixing zone between freshwater and saltwater displays strong physico-chemical gradients. Although the microbial component of these specific environments has been largely disregarded, the contribution of micro-organisms to biogeochemical reactions impacting water geochemistry has previously been conjectured. The objective of this study was to ch...

Soft tissue bacterial infections following aquatic animal bites, stings, and minor injuries occur commonly and usually on the extremities in fishermen and beachgoers worldwide after freshwater and saltwater exposures. Louisiana has more tidal, saltwater, and brackish water shorelines (more than 7,000 miles) than any other state, including Alaska and Hawaii. As a result, Louisiana residents are ...

0309-1708/$ see front matter 2011 Elsevier Ltd. A doi:10.1016/j.advwatres.2011.06.006 ⇑ Corresponding author. Tel.: +1 334 844 6268; fax E-mail address: [email protected] (T.P. Clemen Climate change effects are expected to substantially raise the average sea level. It is widely assumed that this raise will have a severe adverse impact on saltwater intrusion processes in coastal aquifers. In th...

The case study of the brackish spring of "Almyros of Heraklio" in Crete (Greece) and its vast carbonate coastal aquifer is presented, showing the consequence of preferential flows of continental fresh water and saline sea water in karst galleries in a coastal area. Flow heterogeneity generates unexpected upconing in boreholes, and permits the spring of Almyros not to be directly connected with ...