Psyche: A Journal of Entomology

Research Article

[Retracted] Climatic, Regional Land-Use Intensity, Landscape, and Local Variables Predicting Best the Occurrence and Distribution of Bee Community Diversity in Various Farmland Habitats in Uganda

Table 2

Generalized linear models (GLMs) testing the effects of local, landscape, and climatic factors on bee abundance and species richness in farmlands of central Uganda.


	Bee species richness	Coef.	Std. Err.			95% Conf. Interval

Landscape variables	Forest distance	−0.3040771	0.0372303	−8.17	0.000	−0.3770472	−0.2311071
	Proportion cultivation intensity	−0.0417633	0.0184095	−2.27	0.023	−0.0778453	−0.0568113
	% seminatural habitats	0.0260201	0.0098786	2.63	0.008	0.0066585	0.0453817
	Human population density (inhabitants/Km²)	0.0136742	0.0417017	0.33	0.743	−0.0680597	0.0954081
Climatic variables	Overall daily mean minimum temperature (mean 10 years)	−2.36636	2.509198	−0.94	0.346	−7.284298	2.551578
	Overall daily mean maximum temperature (mean 10 years )	−0.8994122	0.3635115	−2.47	0.013	−1.611882	−0.1869429
	Mean monthly maximum temperature (2005)	−5.517305	5.026883	−1.1	0.272	−15.36982	4.335206
	Mean monthly maximum temperature (2006)	−0.0751644	0.1294036	0.561	0.561	−0.3287908	0.178462
	Mean monthly minimum temperature (2006)	0.0237176	0.0198609	1.19	0.232	−0.015209	0.0626443
	Overall mean rainfall (means/month/10 years)	0.8934966	0.4196737	2.13	0.033	0.0709512	1.716042
	Mean monthly rainfalls (2007)	−5.14455	5.405548	−0.95	0.341	−15.73923	5.450129
	Mean monthly rainfalls (2006)	−0.9998961	0.3946438	−2.53	0.011	−1.773384	−0.2264084
Local variables	Density of wild plants (weeds/herbs/trees)	0.6940608	0.3129488	2.22	0.027	0.0806924	1.307429
	Number of flowering wild plant species (weeds/herbs/trees)	−2.874384	0.8531344	−3.37	0.001	−4.546496	−1.202271
	% of cultivated floral resources (pollinator-dependent crops)	0.4345841	2.249894	0.19	0.847	−3.975128	4.844296
	% cultivated floral resources (nonpollinator-dependent crops)	0.8652652	2.129935	0.41	0.685	−3.309331	5.039861
	Constant	548.8108	500.5592	1.1	0.273	−432.2671	1529.889

Other statistics: Log likelihood = −124.727761; AIC (Akaike's Information Criterion) = 12.70252; BIC (Schwarz's Bayesian Criterion) = −21.62718472

	Bee abundance

Landscape variables	Forest distance	0.0039313	0.0054335	0.72	0.4669	−716.9601	0.0145808
	Proportion cultivation intensity	−613.0046	180.3214	−3.4	0.001	−966.4281	−259.5811
	% of seminatural habitats	0.001616	0.0001599	10.10	0.000	0.0013026	0.0019295
	Overall monthly mean rainfalls (means of 10 years)	26.26025	2.734129	9.6	0.000	−19.34479	31.61905
Climatic variables	Overall daily mean minimum temperature (mean of 10 years)	−377.1344	18.25537	−20.66	0.000	−9.023715	−341.3545
	Overall daily mean maximum temperature (mean of 10 years )	−383.902	169.9307	−2.26	0.024	−716.9601	−50.84403
	Mean monthly minimum temperature (2006)	−263.8625	35.75006	−7.38	0.000	−333.9313	−193.7937
	Overall daily mean minimum temperature mean 10 years	5.595728	0.3103008	18.03	0.000	4.98755	6.203907
	Mean monthly maximum temperature (2005)	−66.88049	32.75358	−2.04	0.041	−131.0763	−2.684648
	Mean monthly rainfalls (2007)	−14.75942	2.339518	−6.31	0.000	−19.34479	−10.17404
	Mean monthly rainfalls (2006)	−5.413767	1.841844	−2.94	0.003	−9.023715	−1.803819
	Mean number of flowering wild plant species	−4.652631	4.882926	−0.95	0.341	−14.22299	4.917729
Local variables	Mean density of wild flowering plants	1.686491	0.1404906	12	0.000	1.411134	1.961847
	Cultivated floral resources (pollinator dependent crops)	−192.0184	16.07023	−11.95	0.000	−223.5154	−160.5213
	Cultivated—without resources (nonpollinator-dependent crops)	0.1851433	0.1925751	0.9611	0.336	−0.192297	0.5625835
	Constant	36034.16	3331.619	10.82	0.0000	29504.3	42564.01

Other statistics: Log likelihood = −390.1545969; AIC (Akaike's Information Criterion) = 36.83224; BIC (Schwarz's Bayesian Criterion ) = 568.065439