Figure 2From: Observations on Neotricula aperta (Gastropoda: Pomatiopsidae) population densities in Thailand and central Laos: implications for the spread of Mekong schistosomiasisPlots of population density against sampling time for A, Ban Khi Lek and B, Mahaxai. The original observations are plotted, as well as GSS model predicted values for both the stationary and non-stationary cases. Time was measured in weeks, but an additional scale in years is given for convenience.Back to article page