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RBT33295
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RBT332952022-06-09T18:19:40Z Spatial distribution of macrofauna within a sandy beach on the Caribbean coast of Costa Rica Spatial distribution of macrofauna within a sandy beach on the Caribbean coast of Costa Rica Sibaja-Cordero, Jeffrey A. Soft bottom Count data analysis Polychaetes Peracarida Poisson Negative binomial. Knowingthe spatial pattern and densities of individuals in apopulation is basic to understand ecology such as their response to environmental gradients.The main goal of the present study is to describe the abundances and distribution of thebenthicfauna in thelower intertidallevelof asandybeach at PacuareReserve, Caribbean Coast, Costa Rica. The count data of five taxa (in 29 cores) was analyzed to determine their spatial distribution. Two species of polychaetes were found: the first, Scolelepis (Scolelepis) squamata (O. F. Mueller, 1806) was common in the center of the beach in an aggregated pattern. The second, Pisionidens indica (Aiyar & Alikunhi, 1940) was present in low densities with a random distribution pattern. Moreover, two isopods were found: Excirolana braziliensis Richardson, 1912 was randomly distributed along the beach while Ancinus brasiliensis Lemos de Castro, 1959 appeared only in two stations. A meiofaunal nemerteanattached tograins of sand was the mostcommon organismin theintertidal zone, showing a clumped pattern. Thepatches ofabundancewithin the beachcould be duetoamorphologicchangethat imposes the influenceof thestrongsurf conditions. Moreover, food resource distribution, niche partitioning or competition within the same tide level could influence the different patterns of distribution found in the sediment among the species. In these unstable sediments, the fauna was limited to few opportunist taxa well adapted to withstand mechanical disturbances. Universidad de Costa Rica 2018-04-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Article application/pdf text/html application/vnd.openxmlformats-officedocument.wordprocessingml.document application/pdf application/vnd.openxmlformats-officedocument.wordprocessingml.document application/pdf application/vnd.openxmlformats-officedocument.wordprocessingml.document application/pdf https://revistas.ucr.ac.cr/index.php/rbt/article/view/33295 10.15517/rbt.v66i1.33295 Revista de Biología Tropical; Vol. 66 No. S1 (2018): Volume 66 – Supplement 1 – April 2018: Aquatic Ecosystems of Costa Rica VI; S176–S186 Revista de Biología Tropical; Vol. 66 Núm. S1 (2018): Volumen 66 – Suplemento 1 – Abril 2018: Ecosistemas Acuáticos de Costa Rica VI; S176–S186 Revista Biología Tropical; Vol. 66 N.º S1 (2018): Volume 66 – Supplement 1 – April 2018: Aquatic Ecosystems of Costa Rica VI; S176–S186 2215-2075 0034-7744 10.15517/rbt.v66i1-1 eng https://revistas.ucr.ac.cr/index.php/rbt/article/view/33295/32770 https://revistas.ucr.ac.cr/index.php/rbt/article/view/33295/32790 https://revistas.ucr.ac.cr/index.php/rbt/article/view/33295/33070 https://revistas.ucr.ac.cr/index.php/rbt/article/view/33295/33071 https://revistas.ucr.ac.cr/index.php/rbt/article/view/33295/33072 https://revistas.ucr.ac.cr/index.php/rbt/article/view/33295/33073 https://revistas.ucr.ac.cr/index.php/rbt/article/view/33295/33074 https://revistas.ucr.ac.cr/index.php/rbt/article/view/33295/33075 Copyright (c) 2018 Revista de Biología Tropical http://creativecommons.org/licenses/by/4.0
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| institution |
Universidad de Costa Rica
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| collection |
Revista de Biología Tropical
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| language |
eng
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| format |
Online
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| author |
Sibaja-Cordero, Jeffrey A.
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| spellingShingle |
Sibaja-Cordero, Jeffrey A.
Spatial distribution of macrofauna within a sandy beach on the Caribbean coast of Costa Rica
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| author_facet |
Sibaja-Cordero, Jeffrey A.
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| author_sort |
Sibaja-Cordero, Jeffrey A.
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| title |
Spatial distribution of macrofauna within a sandy beach on the Caribbean coast of Costa Rica
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| title_short |
Spatial distribution of macrofauna within a sandy beach on the Caribbean coast of Costa Rica
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| title_full |
Spatial distribution of macrofauna within a sandy beach on the Caribbean coast of Costa Rica
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| title_fullStr |
Spatial distribution of macrofauna within a sandy beach on the Caribbean coast of Costa Rica
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| title_full_unstemmed |
Spatial distribution of macrofauna within a sandy beach on the Caribbean coast of Costa Rica
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| title_sort |
spatial distribution of macrofauna within a sandy beach on the caribbean coast of costa rica
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| title_alt |
Spatial distribution of macrofauna within a sandy beach on the Caribbean coast of Costa Rica
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| publisher |
Universidad de Costa Rica
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| publishDate |
2018
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| url |
https://revistas.ucr.ac.cr/index.php/rbt/article/view/33295
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| work_keys_str_mv |
AT sibajacorderojeffreya spatialdistributionofmacrofaunawithinasandybeachonthecaribbeancoastofcostarica
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| _version_ |
1810115224794038272
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