01 Mapping

Google Earth™. The image dated March 31, 2005

Google Earth™. The image dated March 31, 2005 . North is towards the left top corner of the image.

Google Earth™. The image dated August 31, 2009

Google Earth™. The image dated August 31, 2009. North is towards the left top corner of the image.

An aerial map of the area was obtained through Google Earth™. The image dated March 31, 2005 was at the beginning of this study the image with the highest resolution of the area. It is particularly interesting because of the ground detail showing the patches with moss growth, as well as, the distinction between coniferous and deciduous trees in the forested areas. The second image used was a fly-by taken during the course of this study on August 31, 2009.

The images are of sufficient resolution to allow for a good correspondence between image detail and general field observations of forb/grass distributions and tree families. The images captured correspond to an altitude of about 587m to 600m and covers an area of 470m by 290m with the intersection of Burnhamthorpe ad 4th Line at its upper left corners.

Historical Maps:1 The following stereo maps sets were kindly accessed from the Halton Conservation Authority1: 1954 NEC 4321 25 245 & 246, and 1974 NEC-5 L25 235 & 236.  Aerial views for the years 1987 and 1994 were obtained from the Halton Region GIS and Data Management department2. Aerial views of the area for 2004, 2005, 2007 and 2009 were obtained from Google Earth™3.

Map overlays were prepared using  Corel Draw X3™ and Acrobat 9™.

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