Scientists developed models to estimate the amount of above ground biomass in mangrove trees affected by spilled crude oil in Southern Nigeria. They measured tree components like branches and foliage to create equations based on tree diameter and height. The models accurately predicted over 50% of the variation in biomass. Height of the tree was a better predictor for foliage and branch biomass, while diameter was equally effective for stem biomass. The total biomass estimated using diameter was 1580.658kg, and using height was 1875.36kg. Foliage biomass increased by 43% and branch biomass by 32% when predicted by tree height instead of diameter.