Fray Jorge National Park (22 ha fragment)
Basic information
Sample name: Fray Jorge National Park (22 ha fragment)

Reference: E. del Val, J. J. Armesto, O. Barbosa, D. A. Christie, A. G. Gutiérrez, C. G. Jones, P. A. Marquet, and K. C. Weathers. 2006. Rain forest islands in the Chilean semiarid region: fog-dependency, ecosystem persistence and tree regeneration. Ecosystems 9:598-608 [ER 2090]
Country: Chile

Coordinate: 30° 40' S, 71° 30' W
Basis of coordinate: stated in text
Geography comments: elevation 500 to 660 m
Climate and habitat
Habitat: Mediterranean woodland
Protection: national/state park
Substrate: ground surface
MAT: 13.6
MAP: 147.0
Habitat comments: "rainforest patches... on the summits of coastal mountains... within a matrix of semiarid scrub vegetation... mediterranean- arid with hot-dry summers and cool winters" with "around 95% of annual rainfall" falling "between June and August"
habitat is unaltered and therefore not designated as fragmentary
Life forms: trees
Sites: 3
Site area: 0.210
Sampling methods: line transect
Sample size: 120
Years: 2003
Minimum size: 5.0cm dbh
Sampling comments: "we set up three parallel transects... oriented approximately from north to south... separated from each other by at least... 25 m" with "ten sampling points separated by 20 m intervals along each transect line (200 m long)" with sampling "using the point-centered quarter method... At each point, we recorded the distance from the four nearest trees to the sampling point" (therefore, 3 x 10 x 4 = 120 trees were sampled; counts are back-computed from per 0.1 ha densities using this figure, and sampling area of ha is back computed from the sum of densities divided by 120)
basal area for all patches combined is illustrated but no figures are given
Sample: 2034
Contributor: John Alroy
Enterer: John Alroy
Created: 2016-06-07 21:07:39
Modified: 2016-06-07 21:07:39
Abundance distribution
4 species
1 singleton
total count 120
standardised richness: not computable
Fisher's α: 0.797
geometric series k: 0.2207
Hurlbert's PIE: 0.3566
Shannon's H: 0.6463
Good's u: 0.9917