Celestun Lagoon (rainy season)
Basic information
Sample name: Celestun Lagoon (rainy season)

Reference: A. Morelos-Villegas, A. R. Condal, and P.-L. Ardisson. 2018. Spatial heterogeneity and seasonal structure of physical factors and benthic species in a tropical coastal lagoon, Celestun, Yucatan Peninsula. Regoinal Studies in Marine Science 22:136-146 [ER 3056]
Country: Mexico
State: Yucatan

Coordinate: 20° 54' N, 90° 21' W
Basis of coordinate: estimated from map
Geography comments: "The inner zone... is shallow (<0.5 m) and scarcely influenced by tides, with low salinity... The soft bottom sediment is a mixture of clay, limestone, sand, and organic matter"
Climate and habitat
Habitat: lagoon
Protection: unprotected
Substrate: ground surface
Habitat comments: "a karstic coastal lagoon"
Life forms: crustaceans, clams, snails, other invertebrates
Sampling methods: sieves
Sample size: 15764
Years: 1998, 1999
Seasons: wet or monsoon
Sampling comments: "Sampling was carried out seasonally during the 19981999 annual cycle. There was one sampling event during each of the dry, rainy, and windy seasons. The sampling was organized into a regular grid of 45 sampling sites distributed across the inner zone of the lagoon. The sampling grid consisted of nine 600800 m long transects, perpendicular to the coastline, with a distance of 700 m among transects. Five sampling sites were selected per transect, with distances among them ranging from 100 to 250 m and covering the entire transverse section of the lagoon from one margin to the other... Sampling was conducted from a small boat at an average depth of 0.5 m... Two sediment samples were collected at each site with a Birge-Ekman grab (15 x 15 x 15 cm) and then transferred to plastic buckets; one sample was used for the study of macroinfauna... the organisms were separated using a 500-μm mesh sieve"
Sample: 3318
Contributor: John Alroy
Enterer: John Alroy
Created: 2019-05-19 18:52:45
Modified: 2019-05-19 18:52:45
Abundance distribution
17 species
3 singletons
total count 15764
standardised richness: 4.6
Fisher's α: 1.882
geometric series k: 0.5659
Hurlbert's PIE: 0.6188
Shannon's H: 1.3452
Good's u: 0.9998