Vernon Holt
Gone But Not Forgotten
The Gnat Line
The Fall Line is a real line. There is geographical evidence to show that it exists.
The gnat line has no such basis in fact. Gnats exist wherever conditions are suitable for their reproduction, namely warm temperatures, adequate supply of moisture, along with decaying organic matter, silt, or sandy, porous soil. I will add that Kaolin pits constitute an ideal habitat for gnats. They are found there because local conditions are favorable, not because they are on the "gnat line".
It is true that the above described condition exists more generally in the Coastal Plain, but at the same time it cannot be said that this condition does not exist north of the Fall Line.
Heavy gnat infestations are generally local in nature and can occur anywhere in the state of Georgia. All that is required is that conditions remain favorable and stable long enough for a hatch to occur. The notable exception to this rule is the coastal area of our state where there are vast areas of coastal marsh, constant moisture, and an abundance of silt and sand. Here the notorious Sand Gnat reigns.
The Fall Line is a real line. There is geographical evidence to show that it exists.
The gnat line has no such basis in fact. Gnats exist wherever conditions are suitable for their reproduction, namely warm temperatures, adequate supply of moisture, along with decaying organic matter, silt, or sandy, porous soil. I will add that Kaolin pits constitute an ideal habitat for gnats. They are found there because local conditions are favorable, not because they are on the "gnat line".
It is true that the above described condition exists more generally in the Coastal Plain, but at the same time it cannot be said that this condition does not exist north of the Fall Line.
Heavy gnat infestations are generally local in nature and can occur anywhere in the state of Georgia. All that is required is that conditions remain favorable and stable long enough for a hatch to occur. The notable exception to this rule is the coastal area of our state where there are vast areas of coastal marsh, constant moisture, and an abundance of silt and sand. Here the notorious Sand Gnat reigns.