Maracâ Island
Basic information
Sample name: Maracâ 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 Maracâ Island, Roraima, Brazil. I. Physical environment, forest structure and leaf chemistry. Journal of Ecology 80(4):689-703 [ER 43]
Geography
Country: Brazil

State: Roraima


Coordinate: 3° 25' N, 61° 40' W
Coordinate basis: 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 Maracâ Island and is from Luizäo et al. (1998, Forest Ecology and Management)

Environment
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)

Methods
Life forms: trees

Sites: 6

Site length: 50

Site width: 50

Sample size: 77 individuals

Years: 1987, 1988

Size min: 10

Basal area: 23.8

Metadata
Sample number: 126

Contributor: John Alroy

Enterer: Albert Garcia Selles

Created: 2013-03-04 16:05:26

Modified: 2017-11-12 01:39:31

Abundance distribution
38 species
29 singletons
total count 77
geometric series index: 220.0
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.
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