Small isolated wetlands are pollution-catching powerhouses
A University of Waterloo press resease.
Small, isolated wetlands that are full for only part of the year are often the first to be removed for development or agriculture, but a new study shows that they can be twice as effective in protecting downstream lake or river ecosystems than if they were connected to them.
Using a new method involving satellite imagery and computer modelling, researchers from the University of Waterloo found that since these small wetlands are disconnected, pollutants such as nitrogen and phosphorous get trapped. This is the first study to use satellite data for estimating nutrient retention.