Long-Term Citizen-Collected Data Reveal Geographical Patterns and Temporal Trends in Lake Water Clarity (original) (raw)
Figure 3
Distribution of lake-specific overall average Secchi depths ( from Eq. 1; A), long-term trends (
from Eq. 1; B), and probability of lake specific long-term trend (probability of
estimated in Eq. 1 of being either <0 or >0; C) based on a hierarchical Bayesian analysis.
Long-term trend (B) positive values indicate long-term increases in water clarity (i.e., increased water clarity) and negative values indicate long-term declines in water clarity (i.e., decreased water clarity) for individual lakes. Probability of lake specific long-term trends (C) left of the dotted red line indicate the number of lakes with long-term annual declines in water clarity (Secchi depth becoming shallower) and associated probability of those long-term declines; values to the right indicate the number of lakes with long-term increases in annual water clarity (Secchi depth becoming deeper) and associated probability of those long-term increases.