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Environmental Sciences Europe

Table 2 Results of similarity percentage (SIMPER) analyses conducted when significant differences between forested and agricultural sites in fatty acid (FA) profiles were found with analysis of similarity (ANOSIM)

From: Land use alters cross-ecosystem transfer of high value fatty acids by aquatic insects

Order

Season

FA

Average

Standard deviation

Ratio

Average agriculture

Average forest

Cumulative contribution

Single contribution

Mayflies

Spring

EPA

0.09

0.06

1.51

0.31

0.19

0.22

0.22

ALA

0.05

0.05

0.99

0.09

0.12

0.35

0.13

ODA

0.05

0.05

1.13

0.23

0.27

0.48

0.13

EA

0.04

0.04

1.08

0.05

0.10

0.58

0.10

ELA

0.03

0.03

0.82

0.03

0.05

0.64

0.06

LIN

0.03

0.03

0.89

0.07

0.08

0.70

0.06

Caddisflies

Summer

ALA

0.09

0.06

1.36

0.22

0.16

0.20

0.20

EPA

0.06

0.05

1.33

0.21

0.17

0.34

0.14

EA

0.05

0.04

1.33

0.10

0.15

0.47

0.13

ODA

0.05

0.05

1.13

0.11

0.16

0.59

0.12

GLA

0.04

0.03

1.16

0.06

0.08

0.68

0.09

LIN

0.03

0.02

1.22

0.05

0.04

0.75

0.07

Non-biting midges

Spring

ALA

0.1

0.07

1.39

0.22

0.19

0.20

0.20

GLA

0.1

0.08

1.19

0.11

0.21

0.41

0.21

EPA

0.08

0.05

1.40

0.18

0.06

0.57

0.16

ODA

0.05

0.04

1.27

0.24

0.25

0.68

0.11

EA

0.03

0.03

1.19

0.06

0.07

0.75

0.07

  1. Average is the contribution of FA to the average between-group dissimilarity, ratio is the average to standard deviation ratio, average agriculture is the average abundance in agricultural sites and average forest the average abundance in forested sites. FA with the closest higher cumulative contribution to 0.7 are presented. EPA eicosapentaenoic acid (20:5n-3), ALA alpha-linolenic acid (18:3n-3), GLA gamma-linolenic acid (18:3n-6), LIN linoleic acid (18:2n-6c), ELA elaidic acid (18:1n-9t), ODA octadecanoic acid (18:0), EA eicosanoic acid (20:0)
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