Soil core from coastal wetland
![small hole in the ground surrounded by grass](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/media/images/WP_20150629_11_52_57_Pro__highres.jpg?itok=wJcNE1fg)
Detailed Description
Scientists collect soil cores in coastal wetland by removing a section of peat, the organic-rich material that makes up salt marshes. After the soil is removed, water quickly fills in the void. This water-logged environment underground is devoid of oxygen and is an important reason that salt marsh peat preserves a record of historical changes. Soil cores are an important research tool for discovering how management changes, such as tidal restoration in salt marshes, have made long-term impacts on coastal wetland resilience.
Sources/Usage
Public Domain.