Depth boundaries seem to be particularly evident for the well sampled symbiont-bearing taxa.
Minimally, the lack of bottleneck patterns from the well sampled, broadly distributed species and limited distribution of sister lineages fits with our a priori predictions for peripatric speciation.
Various health education campaigns were implemented after the well sampling and testing by the HEALS because of ethical obligations (Ahsan et al. 2005).
In the suck-and-see spirit of the Wells Sampled season, Cherkaoui presents a programme of four short duets taken from four of his past works, revised so that they can be seen as free-standing pieces.
Hexazinone was found in only 1.9% of the wells sampled, with the highest concentration detected of 0.0007 mg L-1 (0.0007 ppm) which is below 0.2% of the MAV.
The private wells tested had a higher range of nitrate levels and 4 (2%) of the wells sampled had levels above the MCL.
In another USGS study, uranium was detected in about half the wells sampled and exceeded the EPA MCL in 4% of the wells.
However, it is not possible to know whether the wells sampled by CADPR were the same wells from which study subjects had drawn their drinking water.
While no cohesive subsurface plumes of oil have been found beyond the immediate area of the leaking well, samples collected by the Weatherbird and the Pelican last week indicated subsurface anomalies.
