Modelo probabilístico para explicar distribución espacial en Echinolittorina peruviana (Lamarck, 1822) en costa rocosa (23°S, Antofagasta, Chile)

Patricio De los Rios-Escalante; Diego I. Gallardo; Héctor W. Gómez

doi:10.30550/j.azl/2099

Authors

Patricio De los Rios-Escalante Departamento de Ciencias Biológicas y Químicas, Facultad de Recursos Naturales, Universidad Católica de Temuco, Chile https://orcid.org/0000-0001-5056-7003
Diego I. Gallardo Departamento de Estadística, Facultad de Ciencias, Universidad del Bío-Bío, Chile
Héctor W. Gómez Departamento de Estadística y Ciencias de Datos, Facultad de Ciencias Básicas, Universidad de Antofagasta, Chile

DOI:

https://doi.org/10.30550/j.azl/2099

Keywords:

Echinolittorina peruviana, rocky shore, aggregated pattern, negative binomial distribution, Waring distribution

Abstract

The spatial patterns in benthic flora and fauna have three patterns random, uniform and aggregated. Usually models to fit this are the Poisson, binomial or negative binomial distributions, respectively. However, for specific cases such models cannot be appropriated. The aim of the present study is analyse data of gastropod Echinolittorina peruviana (Lamarck, 1822) obtained in rocky shore of Antofagasta north of Chile, with the aim of determine a reasonable model for explain its spatial distribution. The results revealed that individuals have an aggregated pattern, but not all populations have negative binomial distribution, and it was proceeded to determine an alternative model to the negative binomial distributions family to explain the spatial distribution. The results revealed that population distribution can be adjusted to a Waring model. These results would agree with literature descriptions that negative binomial distribution is not the exclusive pattern that can explain the aggregated pattern in gregarious species.

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