Persistent Hypereutrophy and Limited One-Month-Ahead Forecastability in the Inner Bay of Lake Titicaca: Change Point Analysis and Leakage-Aware Temporal Validation
High-altitude lakes are increasingly exposed to nutrient enrichment, organic loading and wastewater-derived contamination, while predictive performance can be overstated when temporally ordered observations are randomly partitioned or target-defining measurements are reused as predictors. We analyzed 177 consecutive mo...