Table/Figure – Pesticides Research No. 127 2009 – Buffer zones for biodiversity of plants and arthropods: is there a compromise on width?

Buffer zones for biodiversity of plants and arthropods: is there a compromise on width?

Table 3.20. Correlations between species richness of various test taxa. The analyses were carried out on the July data.

Test combination	Test results F_(ndf,ddf)^P¹				Estimate±S.E.
	Field²	Treatment³	Species richness relationship⁴	Species richness relationship(Treatment)⁵	Species richness relationship
Heteroptera vs. dicots.⁷	-	44.18_{(1, 77)}^***	1.35_{(1, 77)}^NS	-	-

Carabidae vs. dicots.	-	0.36_{(1, 77)}^NS	1.58_{(1, 77)}^NS	-	-

Lepidoptera vs. dicots.	-	1.04_{(1, 77)}^NS	3.67_{(1, 77)}^(0.059)	-	0.111 ± 0.058

Herbivorous coleopterans vs. dicots⁸	-	9.51_{(1, 77)}^**	0.28_{(1, 77)}^NS	-	-

Heteroptera vs. Lepidoptera	-	78.63_{(1, 77)}^***	5.89_{(1, 77)}^*	-	0.345 ± 0.142

Carabidae vs. Lepidoptera	12.89_{(3, 75)}^***	1.21_1,74)^NS	4.24_{(1, 74)}^*	-	0.636 ± 0.309

Herbivorous coleopterans vs. Lepidoptera	-	-	-	24.51_{(2, 77)}^***	Treated area: 0.390 ± 0.113 Buffer area: -0.237 ± 0.160
Herbivorous coleopterans vs. Lepidoptera	-	0.05_1,76)^NS	0.62_{(2, 76)}^NS	4.50_{(1, 77)}^*	Treated area: 0.353 ± 0.198 Buffer area: NS

¹^NS not significant, ^*P < 0.05, ^**P < 0.01, ^***P < 0.001. F is the F-value, ndf and ddf is the numerator and denominator degree of freedom used for testing the significance.

²Effect of field (four fields were included in the experiment).

³Buffer zone or pesticide and fertilizer treated field.

⁴Effect of correlation between test taxa.

⁵Effect of correlation between test species within treatment.

⁶The estimated relationship between species richness of test taxa.

⁷Species richness of dicotyledonous plants.

⁸Complex of Chrysomelidae and Curculionidea.