Eutrophication will increase methane emissions from lakes and impoundments during the 21st century
| Autor: | Jake J. Beaulieu, John A. Downing, Tonya DelSontro |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
0301 basic medicine
Science Population General Physics and Astronomy Climate change 02 engineering and technology Article General Biochemistry Genetics and Molecular Biology 03 medical and health sciences Environmental protection 14. Life underwater lcsh:Science education Water pollution education.field_of_study Multidisciplinary business.industry Fossil fuel Lake ecosystem General Chemistry 15. Life on land 021001 nanoscience & nanotechnology 6. Clean water 030104 developmental biology 13. Climate action Greenhouse gas Environmental science lcsh:Q Water quality 0210 nano-technology Eutrophication business |
| Zdroj: | Nature Communications, Vol 10, Iss 1, Pp 1-5 (2019) Nature Communications |
| ISSN: | 2041-1723 |
| Popis: | Lakes and impoundments are an important source of methane (CH4), a potent greenhouse gas, to the atmosphere. A recent analysis shows aquatic productivity (i.e., eutrophication) is an important driver of CH4 emissions from lentic waters. Considering that aquatic productivity will increase over the next century due to climate change and a growing human population, a concomitant increase in aquatic CH4 emissions may occur. We simulate the eutrophication of lentic waters under scenarios of future nutrient loading to inland waters and show that enhanced eutrophication of lakes and impoundments will substantially increase CH4 emissions from these systems (+30–90%) over the next century. This increased CH4 emission has an atmospheric impact of 1.7–2.6 Pg C-CO2-eq y−1, which is equivalent to 18–33% of annual CO2 emissions from burning fossil fuels. Thus, it is not only important to limit eutrophication to preserve fragile water supplies, but also to avoid acceleration of climate change. Agricultural intensification and a growing human population are likely to increase the eutrophication of lakes and impoundments over the next century. Here, the authors show that this enhanced eutrophication will substantially increase emissions of methane (+ 30–90%), a potent greenhouse gas, from these systems over the next century. |
| Databáze: | OpenAIRE |
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