Muskrat Lodge Locations near transect 1 on northern Hog Island of the Virginia Coast Reserve 2005-2011

Locations of lodges of muskrats near Transect 1 on the northern end of Hog Island in May 2005 and repeated in May 2007, April 2009, May 2011 and April 2013. In April 2009 no active muskrat lodges were observed from Transect 1. The remains of two lodges were observed, but they were less than 20 cm in height, had vegetation growing out of them, and showed no sign of activity, so they were not surveyed. Similarly in April 2011 a survey yielded no lodges. So for 2009 and 2011 GIS files were not created, because they would not have contained any points.

2005年5月，针对霍格岛北端样带1沿线麝鼠巢穴的点位调查，分别于2007年5月、2009年4月、2011年5月及2013年4月重复开展。2009年4月的调查中，未在样带1沿线观测到活跃的麝鼠巢穴，仅发现两处巢穴残骸——其高度不足20厘米，表面已有植被生长，且无任何活动痕迹，因此未将其纳入本次调查统计。同理，2011年4月的调查未发现任何麝鼠巢穴。因此2009年与2011年未创建地理信息系统（GIS）文件，原因是此类调查本就不会包含任何点位数据。