Niche Sharing in Intertidal Mollusks and Decapods in Rocky Shore of Easter Island
The coastal marine ecosystems in Easter Island have been poorly studied, and the main studies were isolated species records based on scientific expeditions. The aim of the present study is to apply a spatial distribution analysis and niche sharing null model in published data on intertidal marine ga...
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Online Access: | https://doi.org/10.2478/vzoo-2019-0037 |
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doaj-5858bcf744de452e9f2b51d53afb94e72021-09-05T21:25:39ZengSciendoVestnik Zoologii2073-23332019-10-0153541742210.2478/vzoo-2019-0037Niche Sharing in Intertidal Mollusks and Decapods in Rocky Shore of Easter IslandDe los Ríos P.0Arancibia E. Ibáñez1Departamento de Ciencias Biológicas y Químicas, Facultad de Recursos Naturales, Universidad Católica de Temuco, Casilla 15–D, Temuco, ChileDepartamento de Ciencias Biológicas y Químicas, Facultad de Recursos Naturales, Universidad Católica de Temuco, Casilla 15–D, Temuco, ChileThe coastal marine ecosystems in Easter Island have been poorly studied, and the main studies were isolated species records based on scientific expeditions. The aim of the present study is to apply a spatial distribution analysis and niche sharing null model in published data on intertidal marine gastropods and decapods in rocky shore in Easter Island based in field works in 2010, and published information from CIMAR cruiser in 2004. The field data revealed the presence of decapods Planes minutus (Linnaeus, 1758) and Leptograpsus variegatus (Fabricius, 1793), whereas it was observed the gastropods Nodilittorina pyramidalis pascua Rosewater, 1970 and Nerita morio (G. B. Sowerby I., 1833). The available information revealed the presence of more species in data collected in 2004 in comparison to data collected in 2010, with one species markedly dominant in comparison to the other species. The spatial distribution of species reported in field works revealed that P. minutus and N. morio have aggregated pattern and negative binomial distribution, L. variegatus had uniform pattern with binomial distribution, and finally N. pyramidalis pascua, in spite of aggregated distribution pattern, had not negative binomial distribution. Finally, the results of null model revealed that the species reported did not share ecological niche due to competition absence. The results would agree with other similar information about littoral and sub-littoral fauna for Easter Island.https://doi.org/10.2478/vzoo-2019-0037rocky shorespatial distributionnegative binomial distributionbinomial distributionintertidal environmentgastropodanull model |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
De los Ríos P. Arancibia E. Ibáñez |
spellingShingle |
De los Ríos P. Arancibia E. Ibáñez Niche Sharing in Intertidal Mollusks and Decapods in Rocky Shore of Easter Island Vestnik Zoologii rocky shore spatial distribution negative binomial distribution binomial distribution intertidal environment gastropoda null model |
author_facet |
De los Ríos P. Arancibia E. Ibáñez |
author_sort |
De los Ríos P. |
title |
Niche Sharing in Intertidal Mollusks and Decapods in Rocky Shore of Easter Island |
title_short |
Niche Sharing in Intertidal Mollusks and Decapods in Rocky Shore of Easter Island |
title_full |
Niche Sharing in Intertidal Mollusks and Decapods in Rocky Shore of Easter Island |
title_fullStr |
Niche Sharing in Intertidal Mollusks and Decapods in Rocky Shore of Easter Island |
title_full_unstemmed |
Niche Sharing in Intertidal Mollusks and Decapods in Rocky Shore of Easter Island |
title_sort |
niche sharing in intertidal mollusks and decapods in rocky shore of easter island |
publisher |
Sciendo |
series |
Vestnik Zoologii |
issn |
2073-2333 |
publishDate |
2019-10-01 |
description |
The coastal marine ecosystems in Easter Island have been poorly studied, and the main studies were isolated species records based on scientific expeditions. The aim of the present study is to apply a spatial distribution analysis and niche sharing null model in published data on intertidal marine gastropods and decapods in rocky shore in Easter Island based in field works in 2010, and published information from CIMAR cruiser in 2004. The field data revealed the presence of decapods Planes minutus (Linnaeus, 1758) and Leptograpsus variegatus (Fabricius, 1793), whereas it was observed the gastropods Nodilittorina pyramidalis pascua Rosewater, 1970 and Nerita morio (G. B. Sowerby I., 1833). The available information revealed the presence of more species in data collected in 2004 in comparison to data collected in 2010, with one species markedly dominant in comparison to the other species. The spatial distribution of species reported in field works revealed that P. minutus and N. morio have aggregated pattern and negative binomial distribution, L. variegatus had uniform pattern with binomial distribution, and finally N. pyramidalis pascua, in spite of aggregated distribution pattern, had not negative binomial distribution. Finally, the results of null model revealed that the species reported did not share ecological niche due to competition absence. The results would agree with other similar information about littoral and sub-littoral fauna for Easter Island. |
topic |
rocky shore spatial distribution negative binomial distribution binomial distribution intertidal environment gastropoda null model |
url |
https://doi.org/10.2478/vzoo-2019-0037 |
work_keys_str_mv |
AT delosriosp nichesharinginintertidalmollusksanddecapodsinrockyshoreofeasterisland AT arancibiaeibanez nichesharinginintertidalmollusksanddecapodsinrockyshoreofeasterisland |
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