The Auckland Region contains the most populous urban area in the country with a population of 1.5 million residents, or ~1/3rd of the country’s population. The climate of the Auckland Region is subtropical, with mild winters and warm, humid summers. The average daily maximum and minimum temperatures in February are 23.7 and 15.8 oC and in July are 14.5 and 7.1 oC. Rainfall is relatively high (average of ~1250 mm per year) and occurs all year round. The geology of the region is a base of Greywacke rock in the south; the remains of an andesitic volcanic arc to the west (Waitakere Ranges) with the main isthmus and North Shore composed of Waimemata sandstone and mudstone.
Below: DNA has already been collected from 850 soil samples located at approximately 110 sites within the Auckland Region. Some of these samples are temporal replicates, to assess the variation in bacterial communities over time.