Table 1.
Number of studies and metagenomes within each ecosystem.
| Fresh water | Brackish | Extreme | Marine | Built | Animal | Engineered | Plant | Soil | |
|---|---|---|---|---|---|---|---|---|---|
| Amino Acid | 4.97E-05 | 4.24E-05 | 5.22E-05 | 4.63E-05 | 4.06E-05 | 3.33E-05 | 3.59E-05 | 4.09E-05 | 3.52E-05 |
| Aromatic | 6.61E-06 | 3.26E-06 | 6.55E-06 | 8.59E-06 | 6.91E-06 | 1.05E-06 | 2.80E-06 | 4.43E-06 | 6.02E-06 |
| carbohydrates | 5.58E-05 | 5.29E-05 | 6.03E-05 | 5.42E-05 | 5.09E-05 | 4.64E-05 | 4.33E-05 | 4.53E-05 | 4.31E-05 |
| Cofactors | 5.27E-05 | 4.71E-05 | 4.99E-05 | 4.79E-05 | 4.15E-05 | 3.20E-05 | 3.34E-05 | 4.12E-05 | 3.68E-05 |
| Fatty acids | 6.49E-05 | 7.01E-05 | 6.32E-05 | 6.13E-05 | 5.58E-05 | 5.33E-05 | 4.67E-05 | 5.07E-05 | 4.35E-05 |
| Nitrogen | 4.80E-06 | 4.90E-06 | 4.17E-06 | 3.71E-06 | 4.40E-06 | 2.02E-06 | 2.40E-06 | 2.63E-06 | 3.37E-06 |
| Nuleoside | 2.27E-05 | 1.82E-05 | 2.39E-05 | 2.28E-05 | 1.97E-05 | 2.46E-05 | 2.29E-05 | 1.86E-05 | 1.89E-05 |
| Nuelotide sugars | 5.01E-06 | 4.57E-06 | 5.38E-06 | 4.01E-06 | 3.78E-06 | 4.62E-06 | 4.51E-06 | 3.10E-06 | 4.43E-06 |
| Phosphorus | 4.62E-06 | 4.07E-06 | 2.91E-06 | 3.87E-06 | 3.50E-06 | 3.58E-06 | 3.24E-06 | 1.93E-06 | 3.05E-06 |
| Protein | 1.88E-05 | 1.75E-05 | 2.50E-05 | 1.62E-05 | 1.29E-05 | 1.82E-05 | 1.63E-05 | 1.66E-05 | 1.49E-05 |
| Respiration | 8.11E-06 | 8.48E-06 | 7.24E-06 | 7.12E-06 | 6.27E-06 | 2.98E-06 | 4.87E-06 | 4.74E-06 | 5.34E-06 |
| Secondary Metabolism | 2.40E-06 | 2.11E-06 | 3.93E-06 | 2.29E-06 | 1.80E-06 | 1.88E-06 | 1.95E-06 | 3.35E-06 | 2.28E-06 |
| Sulfur | 3.10E-06 | 2.88E-06 | 2.65E-06 | 3.26E-06 | 4.17E-06 | 9.78E-07 | 1.45E-06 | 9.84E-07 | 2.34E-06 |