<s>[INST] Gravitation: Dobrovnitski, W.J., 1980. "particularly hazardous small tree gaps." Journal of Forestry 78, 123-127.

This study examined gaps and associated hardwood regeneration in four forest stands characterized by varying levels of overstory density, ranging from low density to very dense. There were 116 gaps recorded. At least one hardwood regeneration stem was present in 84% of these gaps. Resultant gaps from nearby fallen gapmakers varied greatly in both area and shape. 

The shipment paper found that the gap sizes are of 200 to 500 m square.  What does "gap sizes are of 200 to 500 m square" even mean and does that match with the paper?[/INST]