Variation in abundance and habitat relationship of three understory insectivorous birds in a disturbed landscape of Neotropical dry forest of Colombia

Table 1 Generalized linear model (Poisson distribution) selection results of White-bellied Antbird, Barred Antshrike, and Pale-breasted Spinetail at the study area, El Quimbo hydroelectric project, Huila, Colombia, 2018–2019

Species	AICc	Delta AIC	K	Weight	Poisson GLM models
White-bellied Antbird	430.3	0	3	0.1413	Abund = shrubarea + forarea
	430.3	0	4	0.1405	Abund = elev + shrubarea + forarea
	431.5	1.2	6	0.0503	Abund = elev + shrubarea + forarea + zone
	432	1.7	5	0.0602	Abund = shrubarea + forarea + typecover
	432.3	1.9	4	0.0537	Abund = slope + shrubarea + forarea
	432.4	2	5	0.0508	Abund = elev + leaflitter + shrubarea + forarea
	432.4	2	5	0.0508	Abund = elev + slope + shrubarea + forarea
Barred Antshrike	506.2	0	6	0.1346	Abund = elev + typecover + zone
	507.5	1.3	7	0.0689	Abund = elev + slope + typecover + zone
	508	1.9	7	0.0527	Abund = elev + shrubarea + typeocover + zone
	508.2	2	7	0.0459	Abund = elev + edge + typecover + zone
Pale-breasted Spinetail	410.3	0	3	0.1522	Abund = typecover
	411.7	1.4	5	0.0766	Abund = typecover + zone
	411.7	1.4	5	0.0762	Abund = elev + slope + typecover
	411.7	1.4	4	0.074	Abund = slope + typecover
	411.8	1.5	5	0.0717	Abund = elev + edge + typecover
	412.1	1.7	5	0.0634	Abund = elev + humaveg + typecover
	412.1	1.8	4	0.614	Abund = humaveg + typecover
	412.2	1.9	4	0.599	Abund = edge + typecover

Variables are referenced as follows: Abund, abundance (number of individuals per point); shrubarea, area of shrubland in the buffer around the plot (ha); forarea, area of forest in the buffer around the plot (ha); elev, elevation at the plot (m); typecover, vegetation cover type following Edwards (1983); slope, slope at the plot (%); leaflitter, average leaf litter depth at the plot measured at each quadrant (cm); edge, edge index in the buffer around the plot (m); humaveg, average relative humidity; zone, zone (1, 2, or 3).

ISSN: 2053-7166