Cozumel Island (birds, 2004 - 2007)
Basic information
Sample name: Cozumel Island (birds, 2004 - 2007)
Reference: H. Perdromo-Velâzquez, E. Andresen, E. Vega, J. E. Schondube, and A. D. Cuarón. 2017. Effects of hurricanes on the understory forest birds of Cozumel Island. Tropical Conservation Science 10:1-14 [ER 3282]
Geography
Country: Mexico
State: Quintana Roo
Coordinate: 20° 26' N, 86° 53' W
Coordinate basis: stated in text as range
Environment
Habitat: tropical/subtropical dry broadleaf forest
Protection: biosphere reserve
Substrate: ground surface
MAT: 25.5
MAP: 1505.0
Habitat comments: "semideciduous tropical forest... rainfall is highly seasonal"
the island is "included in UNESCO’s World Network of Biosphere Reserves"
the island is "included in UNESCO’s World Network of Biosphere Reserves"
Methods
Life forms: birds
Sites: 6
Sampling methods: line transect,mist nets
Sample size: 2504 captures or sightings
Years: 2004 - 2007
Days: 24
Seasons: winter,summer
Nets or traps: 9
Net or trap nights: 216
Sampling comments: "Two times before the hurricanes and four times after- ward, understory forest birds were captured using mist nets (12 m in length, 2 m height, and 32 mm mesh size) in six sites (>500 m apart) within the area covered by semi-deciduous tropical forest... In each site, mist nets were placed along three parallel 72m long transects (3 x 72 m); distance between adjacent lines at each site varied between 13 and 29 m... During each of the six sampling periods, each site was sampled over 4 consecutive days. The first half of the three transects (3 x 36 m) were sampled simultaneously using a total of nine nets, during 2 days. Then, the nine nets were moved to the second half of the three transects for 2 more days of sampling. Nets were opened at sunrise and remained open for 6 hours... Sampling effort per site was 216 net hours in each sampling period"
sampling was during northern summer 2004, winter 2005, winter 2006, summer 2006, winter 2007, and summer 2007
sampling was during northern summer 2004, winter 2005, winter 2006, summer 2006, winter 2007, and summer 2007
Metadata
Sample number: 3637
Contributor: John Alroy
Enterer: John Alroy
Created: 2020-05-27 14:21:58
Modified: 2020-05-27 04:21:58
Abundance distribution
45 species
4 singletons
total count 2504
geometric series index: 59.5
Fisher's α: 7.791
geometric series k: 0.8544
Hurlbert's PIE: 0.7914
Shannon's H: 2.2401
Good's u: 0.9984
Each square represents a species. Square sizes are proportional to counts.
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