Sediment microbial enzyme activity as an indicator of nutrient limitation in the great rivers of the Upper Mississippi River basin

Earth & Environmental Sciences

• nutrient limitation 100%
• enzyme activity 83%
• river basin 61%
• indicator 46%
• river 38%
• sediment 37%
• sediment chemistry 14%
• water chemistry 10%
• land use 9%
• nutrient 9%
• carbon 8%
• catchment 7%
• agriculture 7%
• nutrient dynamics 6%
• nitrogen 5%
• atmospheric deposition 5%
• urban development 4%
• fluvial deposit 4%
• enzyme 3%
• phosphorus 3%
• sulfate 3%
• regulation 3%
• ecosystem 2%
• water 1%
• analysis 1%

Chemical Compounds

• Nutrient 84%
• Indicator 69%
• Enzyme Activity 65%
• Catchment 53%
• Carbon Atom 22%
• Atmospheric Chemistry 21%
• Nitrogen 19%
• Ecosystem 18%
• Chemistry 18%
• Phosphorus(.) 13%
• Sulfate 11%