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dc.contributor.author
Carcedo, Maria Cecilia
dc.contributor.author
Fiori, Sandra Marcela
dc.contributor.author
Scotti, Marco
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Ito, Maysa
dc.contributor.author
Dutto, María Sofía
dc.contributor.author
Carbone, Maria Elizabeth
dc.date.available
2020-02-17T21:14:09Z
dc.date.issued
2019-11
dc.identifier.citation
Carcedo, Maria Cecilia; Fiori, Sandra Marcela; Scotti, Marco; Ito, Maysa; Dutto, María Sofía; et al.; Dominant Bivalve in an Exposed Sandy Beach Regulates Community Structure Through Spatial Competition; Springer; Estuaries and Coasts; 42; 7; 11-2019; 1912-1923
dc.identifier.issn
1559-2723
dc.identifier.uri
http://hdl.handle.net/11336/97840
dc.description.abstract
Fluctuations in abundance of dominant species can cause competitive release of resources with consequences on community structure and functioning. In the present study, changes in the intertidal macroinfauna community of an exposed sandy beach were evaluated during two contrasting periods characterized by low and high densities of the yellow clam Amarilladesma mactroides. The increase in clam abundance and biomass was associated with a significant decrease in abundance of the rest of the community. In particular, a decline was observed for the pea crab Austinixa patagoniensis, a commensal species that lives in the burrows of the shrimp Sergio mirim. Our study demonstrates that fluctuations in clam abundance lead to long-term changes in community structure, suggesting the presence of competitive interactions. The environmental stability over the two periods strengthens the hypothesis that the competition between species is crucial for shaping the ecological community. Stable isotope analysis allows discarding trophic competition as mechanism of exclusion. Image maps reveal complementary distribution of species, showing the relevance of the spatial competition, which is mediated by changes in abundance of a third species. Indeed, high densities of A. mactroides reduce the available area for the establishment of the S. mirim burrows, limiting the foraging behavior of its commensal, the pea crab. Such an interaction drives density-dependent exclusion of the pea crab from the intertidal zone following the establishment of the yellow clam population. This study illustrates that spatial competition triggered by the increase of a bed-forming species can have community-wide consequences in exposed sandy beaches.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Springer
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
INTERTIDAL ZONE
dc.subject
MACROINFAUNA COMMUNITY
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PEA CRAB
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POPULATION DENSITY
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SW ATLANTIC
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YELLOW CLAM
dc.subject.classification
Ecología
dc.subject.classification
Ciencias Biológicas
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
Dominant Bivalve in an Exposed Sandy Beach Regulates Community Structure Through Spatial Competition
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2020-01-13T14:36:15Z
dc.journal.volume
42
dc.journal.number
7
dc.journal.pagination
1912-1923
dc.journal.pais
Alemania
dc.journal.ciudad
Berlín
dc.description.fil
Fil: Carcedo, Maria Cecilia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto Argentino de Oceanografía. Universidad Nacional del Sur. Instituto Argentino de Oceanografía; Argentina. Universidad Nacional del Sur. Departamento de Biología, Bioquímica y Farmacia; Argentina
dc.description.fil
Fil: Fiori, Sandra Marcela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto Argentino de Oceanografía. Universidad Nacional del Sur. Instituto Argentino de Oceanografía; Argentina. Universidad Nacional del Sur. Departamento de Biología, Bioquímica y Farmacia; Argentina
dc.description.fil
Fil: Scotti, Marco. Geomar-Helmholtz Centre for Ocean Research Kiel; Alemania
dc.description.fil
Fil: Ito, Maysa. Geomar-Helmholtz Centre for Ocean Research Kiel; Alemania
dc.description.fil
Fil: Dutto, María Sofía. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto Argentino de Oceanografía. Universidad Nacional del Sur. Instituto Argentino de Oceanografía; Argentina
dc.description.fil
Fil: Carbone, Maria Elizabeth. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto Argentino de Oceanografía. Universidad Nacional del Sur. Instituto Argentino de Oceanografía; Argentina. Universidad Nacional del Sur. Departamento de Geografía y Turismo; Argentina
dc.journal.title
Estuaries and Coasts
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1007/s12237-019-00622-1
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007%2Fs12237-019-00622-1
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