Accumulation and variability of maize pollen deposition on leaves of European Lepidoptera host plants and relation to release rates and deposition determined by standardised technical sampling

Environmental Sciences Europe

Table 1 Statistical parameters of leaf deposition data

Maize pollen deposition on leaves in n/cm²		Maize Z. maize			Nettle U. diocia			Goosefoot C. alba	Sorrel R. acetosa	Blackberry Rubus sp.
Field/site		Total	A	B	Total	A	B	B	A2	A1
Sample size n	5377	2497	1593	904	1646	810	836	586	324	324
Parameters and quantiles from the fitted log-normal-distribution (CML estimate)
Mean _log10	µ_log10	2.12	1.79	2.68	2.14	1.89	2.39	2.57	1.73	2.20
SD._log10	σ_log10	1.03	1.01	0.84	0.74	0.66	0.72	0.68	1.01	0.58
SD factor on linear scale	σ_{lin Factor}	10.7	10.3	7.0	5.5	4.6	5.3	4.8	10.3	3.8
95 % quantile	L95 %	6497	2831	11,716	2270	953	3791	4908	2499	1452
90 % quantile	L90 %	2747	1214	5780	1225	547	2067	2774	1070	892
75 % quantile	L75 %	652	295	1775	437	217	751	1070	260	395
50 % quantile	L50 %	132	61	478	139	77	244	371	54	160
25 % quantile	L25 %	27	13	129	44	28	79	129	11	65
10 % quantile	L10 %	6.3	3.1	40	16	11	29	50	2.7	29
5 % quantile	L5 %	2.7	1.3	20	8.5	6.3	16	28	1.2	18
Maxima and quantiles from the empirical distribution function
Maximum	Emax	103,000	14,112	103,000	13,802	10,987	13,802	17,098	6055	2246
95 % quantile	E95 %	4613	2282	8858	2194	879	3770	4532	2043	1213
90 % quantile	E90 %	2526	1152	5090	1152	586	2078	3389	1270	864
75 % quantile	E75 %	762	342	1730	474	244	700	989	391	488
50 % quantile	E50 %	162	72	536	146	49	288	412	49	169
25 % quantile	E25 %	36	18	124	33	<33	82	144	33	49

Results of the application of different statistical models to the collected deposition data. The log-normal distribution was fitted to the data by censored maximum likelihood (CML) estimation. The empirical distribution describes the raw data