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dc.contributor.author
López, Rubén Álvaro  
dc.contributor.author
Penchaszadeh, Pablo Enrique  
dc.contributor.author
Marcomini, Silvia Cristina  
dc.date.available
2020-09-22T20:31:21Z  
dc.date.issued
2008-07  
dc.identifier.citation
López, Rubén Álvaro; Penchaszadeh, Pablo Enrique; Marcomini, Silvia Cristina; Storm-related strandings of mollusks on the northeast coast of Buenos Aires, Argentina; Coastal Education & Research Foundation; Journal of Coastal Research; 24; 4; 7-2008; 925-935  
dc.identifier.issn
0749-0208  
dc.identifier.uri
http://hdl.handle.net/11336/114578  
dc.description.abstract
The purpose of the paper is to characterize mollusk stranding on the northern coast of Buenos Aires, and to determine the mechanisms of alteration induced by storm surges on the infralittoral macroinvertebrates as well as on the morphosedimentary feature of the beach. The most common living organisms stranded on the beach were Adelomelon brasiliana and their free giant egg capsules, Amiantis purpurata, Atrina seminuda, Buccinanops duartei, Buccinanops gradatum, Buccinanops monilifer, Donax hanleyanus, Mesodesma mactroides, Mytilus edulis platensis, Tivella isabelleana, and Zidona dufresnei. Shells of Mactra isabelleana and Glycymeris longior were also found. Three mechanisms were responsible for strandings on the emerged beach: (i) storm surges related to a decrease in the wave-cut level, (ii) swell conditions with infralittoral organism remobilization in the following 7 days, and (iii) shell bar migration. The high abundance of shells found at the emerged beach is due to Mactra isabelleana, although no living individuals were found during the 6 years of survey. The predominance of G. longior shells resulted from their shape, thickness, and hardness, enriching the beach sediments. This is in contrast to other species (D. hanleyanus, Mytilus edulis platensis, and Mesodesma mactroides) whose shells cannot endure exposure to the transport and weather conditions in the swash zone and on the emerged beach. The intact condition of shells immediately after the storm indicate that they were transported from greater depths where the death of the organisms occured. This is indicated by the simultaneous presence of live stranded individuals and empty shells of the same species (T. isabelleana, Amiantis purpurata, Adelomelon brasiliana, Z. dufresnei, B. gradatum, and Mytilus edulis platensis). Between 35% and 65% of the sand are shell fragments, mostly of deeper water species. The variation in mean grain size, sorting, and skewness among samplings is attributed to shell fragmentation, while the mode remained invariable. Most of the intact shells supplied by the storm were reworked in the swash zone. The percentage of bioclasts remained invariable for 5 months and fell within the interval of 0-0.5 phi.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
Coastal Education & Research Foundation  
dc.rights
info:eu-repo/semantics/openAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/  
dc.subject
BEACH HYDRODYNAMICS  
dc.subject
BEACH MORPHODYNAMICS  
dc.subject
ECOLOGY  
dc.subject
GRAIN SIZE  
dc.subject
MASS MORTALITY  
dc.subject
MOLLUSKS  
dc.subject
STORM SURGES  
dc.subject
STORMS  
dc.subject
STRANDINGS  
dc.subject.classification
Biología Marina, Limnología  
dc.subject.classification
Ciencias Biológicas  
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS  
dc.title
Storm-related strandings of mollusks on the northeast coast of Buenos Aires, Argentina  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2020-07-20T18:15:56Z  
dc.journal.volume
24  
dc.journal.number
4  
dc.journal.pagination
925-935  
dc.journal.pais
Estados Unidos  
dc.description.fil
Fil: López, Rubén Álvaro. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Geología; Argentina  
dc.description.fil
Fil: Penchaszadeh, Pablo Enrique. Universidad de Buenos Aires; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina  
dc.description.fil
Fil: Marcomini, Silvia Cristina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Geología; Argentina  
dc.journal.title
Journal of Coastal Research  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.2112/05-0621.1  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://bioone.org/journals/journal-of-coastal-research/volume-2008/issue-244/05-0621.1/Storm-Related-Strandings-of-Mollusks-on-the-Northeast-Coast-of/10.2112/05-0621.1.short