Caucaia do Alto (Sherman traps)
Basic information
Sample name: Caucaia do Alto (Sherman traps)
Reference: F. Umetsu, L. Naxara, and R. Pardini. 2006. Evaluating the efficiency of pitfall traps for sampling small mammals in the Neotropics. Journal of Mammalogy 87(4):757-765 [ER 850]
Geography
Country: Brazil
State: São Paulo
Coordinate: 24° 44' S, 47° 3' W
Latlng basis: estimated from map
Geography comments: five sites were in the Morro Grande Reserve and the others were to the west
altitude 850 to 1100 m
altitude 850 to 1100 m
Environment
Habitat: tropical/subtropical dry broadleaf forest
Substrate: ground surface
MAT: 19.0
MAP: 1350.0
Habitat comments: "a transition between the coastal Atlantic rain forest and the Atlantic semideciduous forest, classified as 'Lower Montane Atlantic Rain Forest'"; 23 of 26 sites were in "secondary forest from 50 to 80 years old"
mean max/min 27/11
rainfall 1300 to 1400 mm and is "seasonably variable"
mean max/min 27/11
rainfall 1300 to 1400 mm and is "seasonably variable"
Methods
Life forms: rodents, other small mammals
Sites: 26
Sampling methods: baited, Sherman traps
Sample size: 675 individuals
Years: 2002 - 2005
Days: 21
Nets or traps: 24
Net or trap nights: 1008
Basal area status: not applicable
Sampling comments: at each of the 26 sites there were "2 parallel lines of [baited] Sherman traps" that "were 165 m long and separated by 20 m" including "12 trap stations at 15-m intervals"; Sherman trap sessions totalled 21 days and 1008 trap-nights
Metadata
Sample no: 1203
Contributor no: John Alroy
Enterer: John Alroy
Created: 2015-02-14 19:59:50
Modified: 2015-02-14 08:59:50
Abundance distribution
Each square represents a species. Square sizes are proportional to counts. Values are logged.
Statistics
14 species
0 singleton
total count 675
geometric series index: 16.0
Fisher's α: 2.499
geometric series k: 0.7051
Hurlbert's PIE: 0.8425
Shannon's H: 2.0822
Good's u: 1
Register
| Marmosops incanus (gray slender opossum) | 106 | 52.2 g |
| Didelphis aurita (big-eared opossum) | 58 | 1.1 kg |
| Monodelphis americana (northern three-striped opossum) | 6 | 36.0 g |
| Gracilinanus microtarsus (Brazilian gracile opossum) | 54 | 33.4 g |
| Philander frenatus (southeastern four-eyed opossum) | 12 | |
| Marmosa paraguayana (Tate's woolly mouse opossum) | 5 | |
| "Micoureus paraguayanus" | ||
| Oligoryzomys nigripes | 44 | 17.7 g |
| Akodon montensis | 188 | 35.7 g |
| Delomys sublineatus | 59 | |
| Sooretamys angouya | 19 | |
| "Oryzomys angouya" | ||
| Euryoryzomys russatus | 113 | |
| "Oryzomys russatus" | ||
| Thaptomys nigrita | 7 | 21.2 g |
| Juliomys pictipes | 2 | |
| Rhipidomys cf. mastacalis | 2 | 66.2 g |