Irrigation Water Chemistry: Impact on Microbial Community Composition and Biogeochemical Leaching under Perennial Ryegrass (Lolium perenne [L])
Table 2
Univariate analysis of variance on individual FAME biomarkers to examine the effect of irrigation source water, starter fertilizer and interactions between irrigation water and fertilizer. Bold values show a statistically significant effect at . + indicates an increase; β indicates a decrease and = indicates no significant increase or decrease. GWB is grey water-bath, GWW is grey water-washing machine, MTW is Municipal tap water, and ALL indicates all irrigation waters except harvested rain water.
Fame
Water source
Fertilizer
Water*fertilizer interaction
Relative abundanc range (%)
Significant increase or decrease*
ISO 15β:β0
0.68
0.97
0.12
4.6β4.9
=
Gram + bacteria
ANTEISO 15β:β0
0.05
0.86
0.2
2.0β2.3
+GWB
15β:β0
0.37
0.53
0.75
0β0.2
=
ISO 16β:β0
0.56
0.19
0.19
2.0β2.1
=
16β:β0
0.00
0.76
0.42
17β20
βALL
ISO 17β:β1G
0.01
0.78
0.03
2.9β3.5
+GWW
ISO 17β:β0
0.06
0.61
0.05
2.0β2.3
=
ANTEISO 17β:β0
0.25
0.55
0.96
0.8β1.6
=
Gramβ bacteria
16:1 Ο9c
0.41
0.42
0.23
0β0.3
=
16β:β1 Ο7c
0.00
0.58
0.04
3.5β4.6
βALL
16β:β1 Ο5c
0.00
0.04
0.01
4.9β8.3
=
17β:β0 CYCLO
0.99
0.53
0.07
0.36β0.45
=
18β:β1 Ο5c
0.45
0.64
0.05
0β0.9
=
19β:β0 CYCLO c11-12
0.00
0.32
0.06
3.8β5.7
+ALL
Fungi
18β:β2 Ο6c
0.00
0.63
0.14
6.3β8.0
βALL
18β:β1 Ο9c
0.01
0.67
0.87
14.5β17.7
βMTW/GWB
Protozoa
20β:β4 Ο6c
0.13
0.81
0.95
0β0.4
=
Bacteria
17β:β0
0.15
0.06
0.25
0.4β1.2
=
18β:β0
0.03
0.16
0.11
11.0β13.5
+GWB
14β:β0
0.36
0.48
0.65
0.5β1.1
=
Other
Sum in feature 8
0.07
0.33
0.11
9.3β10.6
=
19β:β1 Alcohol
0.67
0.96
0.50
0β0.3
=
19β:β2 Ο6c
0.94
0.67
0.10
0.5β0.9
=
cis 9,10 epoxy 18β:β0
0.81
0.56
0.21
0.6β1.3
=
20β:β1 Ο9c
0.47
0.96
0.05
0.1β0.6
=
20β:β0
0.05
0.39
0.3
0.7β1.7
=
*Significant increase or decrease is relative to soil microbes in harvested rain water-treatments at ().