Survey Metadata

During a four week period starting in mid-May 1994, vegetation samples were collected from approximately 925 sites within a 5600 km² area of central Nova Scotia.  Samples were collected at an average density of 1 site per 7 km².  In general, samples were collected at 2 km intervals along drivable roads and tracks with some helicopter support for accessing remote areas.  Three trucks were used, each with a crew of two.  Vegetation samples were selected from a site at least 50 m from a highway or 10 m from a little-used track.  At most sites samples of outer bark of red or black spruce was collected as well as twigs of balsam fir.  Usually 5-7 twigs, each comprising 5-7 years grown (commonly 35-40 cm length of twig).  Geological Survey of Canada Open File 3221 presents data from the 786 sites at which balsam fir twigs were collected.  The spruce bark data have not yet been published.

At most sites, where possible, a stream water sample was also collected. The data have not yet been published.