An area of mangroves that has been destroyed by petroleum may be susceptible to other problems. These areas may not be suitable for any native plant growth until bacteria and microorganisms can remediate the conditions. A particular species of mangrove, "Rhizophora racemosa" lives higher in the delta system. As the soils supporting "R. racemosa" become too toxic, a non-native invasive species of palm, "Nypa fruticans", quickly colonizes the area. This invasive species has a shallower root system that destabilizes the banks along the waterways, further affecting sediment distribution lower in the delta system. "N. fruticans" also impedes navigation and decreases overall biodiversity. In places where "N. fruticans" has invaded, communities are investigating how the palm can be used by local people.