I want to analyze how the environmental conditions along the migratory route of a bird are related to the environmental conditions found at the breeding ground (which it is at high latitudes and we assume the rate of change is faster than at the stopovers). The environmental conditions are the NDVI, temperature, growing degree days.
Is it enough with a simple correlation analysis or is there's another approach to make the analysis more robust?
thanks a lot in advance for your answers!