Table 1: Total and relative abundance of aphids on wheat crops with a high (HPD) and low plant diversity (LPD). Balcarce, 2007 and 2008.

SystemsSchizaphis graminum Metopolophium dirhodum Sitobion avenae Total (n)
Total abundance
(no.)
Relative
abundance (%)
Total abundance
(no.)
Relative
abundance (%)
Total abundance
(no.)
Relative
abundance (%)

2007HPD4316,678934,5012648,84258a
LPD5615,3812835,1618049,45364b

2008HPD8217,0515231,6024751,35481c
LPD10217,0918831,4930751,42597d

Mean values followed by the same letter indicate no significant differences according to the LS means multiple range test at .