Seasonally flooded stepping stones: emerging diversity of small mammal assemblage in the Amazonia-Cerrado ecotone, central Brazil

Zoological Studies

Table 1 Species recorded at Fazenda Lago Verde, state of Tocantins

	Ipucas (A to D)	Cerrado (E to F)	Agricultural (G to H)	Total	Locomotion	Distribution
Species
Didelphis albiventris	-	1	-	1	Arb/Terr	Cer/Caa/AtlF
Gracilinanus agilis	40	-	-	40	Arb	Am/Cer/Caa/AtlF
Philander opossum	3	-	-	3	Arb/Terr	Am
Calomys tocantinsi	5	2	11	18	Terr	Eco/Cer
Holochilus sciureus	1	-	2	3	Semi-Aqua	Am/Cer/Caa
Hylaeamys megacephalus	6	-	-	6	Terr	Am/Cer
Necromys lasiurus	2	3	-	5	Terr	Am/Cer/Caa/AtlF
Oecomys sp.	6	1	-	7	Arb	Eco
Oligoryzomys fornesi	3	-	4	7	Terr	Cer/Caa
Pseudoryzomys simplex	-	1	-	1	Terr	Cer/Caa
Rhipidomys ipukensis	22	-	-	22	Arb	Eco
Makalata didelphoides	3	-	-	3	Arb	Am
N	91	8	17	116
Trap effort	3808	448	448	4,704
Trap success (%)	2.4	1.8	3.8	2.5
S	10	5	3	12
H’	1.69	1.49	0.87	1.96
E	0.74	0.93	0.80	0.79

Number of captured individuals (n) of small mammal species in each of four natural forest fragments (A to D), in the Cerrado sensu strictu matrix (E to F) and in the irrigation channels in the agricultural matrix (G to H), with trap effort and success, and species richness (S) and Shannon-Wiener diversity index (H′) for each sampling point. Form of locomotion (Arb, arboreal; Terr, terrestrial; Semi-aqua, semi-aquatic) and geographic distribution of small mammal species in Brazil (Am, Amazonia; Cer, Cerrado; Eco, ecotone Amazonia-Cerrado; AtlF, Atlantic Forest; Caa, Caatinga).