|Variables Descriptions||Data File||Date Range|
|Snail distribution around Puerto Rico||islanddistribution.csv||2001-01-06 to 2003-01-09|
|Water chemistry and snail distribution at stream-networks||waterchemistryandsnaildistribution.csv||2001-01-06 to 2003-01-09|
|Habitat distribution at Mameyes upstream Route 3||habitatdistributionatMameyesupstreamRoute3.csv||2000-08-22 to 2000-12-12|
|microhabitat distribution at Mameyes upstream Route 3||microhabitatdistributionatMameyesupstreamRoute3.csv||2000-08-22 to 2000-12-12|
This data set includes N. virginea densities and sizes relative to streambed substrate type, water depth, and habitat type in a low land reach in RÃo Mameyes near PR Route 3 bridge, and presence and inland extent of distribution of in 32 coastal rivers around the island. Hydrologic and water chemistry variables are reported as predictors of snail distribution at regional and stream-network scales.