Maracá Island
Basic information
Sample name: Maracá Island

Reference: J. Thompson, J. Proctor, V. Viana, W. Milliken, J. A. Ratter, and D. A. Scott. 1992. Ecological studies on a lowland evergreen rain forest on Maracá Island, Roraima, Brazil. I. Physical environment, forest structure and leaf chemistry. Journal of Ecology 80(4):689-703 [ER 43]
Country: Brazil
State: Roraima

Coordinate: 3° 25' N, 61° 40' W
Basis of coordinate: stated in text as range
Geography comments: the island is at "3°15' to 3°35'N and 61°22' to 61°58'W" based on Pontes (1997, Int J Primatol)
altitude is for Maracá Island and is from Luizão et al. (1998, Forest Ecology and Management)
Habitat: tropical/subtropical moist broadleaf forest
Substrate: ground surface
MAT: 26.0
MAP: 2083.0
Habitat comments: JA: within "a 9-ha area of forest" on a plateau but apparently surrounded by native vegetation
MAT is for Maraca Island and is from Rafael and Rosa (1991, Acta Amazonica)
MAP stated in text is 1822 mm; MAP is for Maraca Island and is from Nascimento et al. (2007, Plant Ecol)
Life forms: trees
Sites: 6
Site length: 50.000
Site width: 50.000
Sample size: 77
Years: 1987, 1988
Minimum size: 10.0cm dbh
Basal area: 23.8000 per ha
Sample: 126
Contributor: John Alroy
Enterer: Albert Garcia Selles
Created: 2013-03-04 16:05:26
Modified: 2017-11-12 12:39:31
Abundance distribution
38 species
29 singletons
total count 77
extrapolated richness: 208.9
Fisher's α: 29.731
geometric series k: 0.9350
Hurlbert's PIE: 0.9342
Shannon's H: 3.1855
Good's u: 0.6241
Each square represents a species. Square sizes are proportional to counts.