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. 2011 Sep 16;6(9):e25144. doi: 10.1371/journal.pone.0025144

Table 4. Comparison of enzyme activities in wide range of environments.

Enzyme Environment Substratea Microbial cell density (×105 ml−1) Microbial biomass in soil (µg g-soil−1) and fresh/seawater (µg l−1) Activity in soils (µmol g-soil−1 h−1) and fresh/seawater (µmol h−1 l−1) Condition Reference
Phosphatase Acid Soil, Hawaii p-NP-P - 3620–4500 30–60 forest 28
Acid Soil, Kenya p-NP-P - 112–3151 38–97 forest, agricultural area 29
Acid Soil, Tahiti p-NP-P - 193–855 302–711 forest, agricultural area, bare 30
Acid Soil, USA MUF-P - - 1–16 forest, agricultural area, bare 27
Acid Wetland soil, Great Lake MUF-P - - 0.1–0.3 wetland 31
Acid Freshwater, Lake Kinnet p-NP-P - - 3.6–10.3 particle-bound 17
Acid Freshwater, Lake Kinnet p-NP-P - - 12.9–21.4 dissolved 17
Acid, Alkaline Freshwater, Great Lake MUF-P - - 1.5–2.8 surface, subsurface 20
Alkaline Freshwater, Lake Kinnet p-NP-P - - 1.8–5.8 particle-bound 17
Alkaline Freshwater, Lake Kinnet p-NP-P - - 1.1–1.6 dissolved 17
Alkaline Freshwater, Lake Kuc MUF-P ave. 22 0.63 oligo/mesotrophic 19
Alkaline Freshwater, Lake Szymon MUF-P ave.158 0.08 hypereutrophic 19
Alkaline Seawater, Red Sea p-NP-P - - 0.04–0.15 oligotrophic 26
Acid Utricularia spp. MUF-P - - 7.6–99.9 dissolved (after filtration) 39
Acid Utricularia spp. MUF-P 470–10200 1.8–16.0 dissolved (after filtration) 45
Acid Nepenthes spp. p-NP-P 40–390 - 132–95957 particle-bound (untreated) this study
Acid Nepenthes spp. p-NP-P - - 74–42178 dissolved (after filtration) this study
beta-D-glucosidases Soil, Kenya p-NP-BG - 112–3151 3–20 forest, agricultural area 29
Soil, Tahiti p-NP-BG - 193–855 66–194 forest, agricultural area, bare 30
Soil, USA MUF-BG - - 0.1–0.9 forest, agricultural area, bare 27
Wetland, Great Lake MUF-BG - - 0.5–1.2 wetland 31
Fresh water, Ohio MUF-BG - - 0 river 21
Sea water, Mediterranean Sea MUF-BG 3.1–14.7 0–0.0012 sea 25
Fresh water, Lake Gardno MUF-BG - - 0.15–0.25 surface, subsurface 20
Fresh water, Lakes MUF-BG 3–570 - 0.007–0.368 lakes 23
Utricularia spp. MUF-BG - - 1.35–2.95 dissolved (after filtration) 39
Nepenthes spp. p-NP-BG 40–390 - 11–16050 particle-bound (untreated) this study
Nepenthes spp. p-NP-BG - - 0–13958 dissolved (after filtration) this study
beta-D-glucosaminidases Soil, Hawaii p-NP-NAG - 3.62–4.5 2–9 forest 28
Soil, Kenya p-NP-NAG - 112–3151 2–20 forest, agricultural area 29
Soil, USA MUF-NAG - - 0.04–0.5 forest, agricultural area, bare 27
Soil, Great Lake MUF-NAG - - 0.1–0.5 wetland 31
Soil, USA MUF-NAG - - 0.01–0.76 forest, agricultural area, bare 27
Freshwater, Lake Gardno MUF-NAG - - 0.06–0.09 surface, subsurface 20
Freshwater, Ohio MUF-NAG - - 0 river 21
Freshwater, Piburger Lake MUF-NAG - 1180–9260 0–0.0085 particle-bound 24
Freshwater, Piburger Lake MUF-NAG - 1180–9260 0–0.008 dissolved 24
Utricularia spp. MUF-NAG - - 0.096–0.356 dissolved (after filtration) 39
Nepenthes spp. p-NP-NAG 40–390 - 4–23879 particle-bound (untreated) this study
Nepenthes spp. p-NP-NAG - - 0–23291 dissolved (after filtration) this study