Macrobenthos in areas with organic enrichment: Mar del Plata and Quequén effluents, Argentina

Name: Macrobenthos in areas with organic enrichment: Mar del Plata and Quequén effluents, Argentina
License: https://creativecommons.org/licenses/by-nc/2.5/ar/
Keywords: IMPACTO ANTROPICO

Datos de investigación

Macrobenthos in areas with organic enrichment: Mar del Plata and Quequén effluents, Argentina

Autores: Llanos, Elizabeth Noemi Icon

; Saracho Bottero, Maria Andrea Icon

; Pujol, Maria Gabriela; Marcomini Scibilia, Yazmin

Colaboradores: Elias, Rodolfo; Garaffo, Griselda Valeria Icon

; Jaubet, Maria Lourdes Icon

; Hines, Emiliano Icon

Publicador: Consejo Nacional de Investigaciones Científicas y Técnicas

Fecha de depósito: 14/04/2026

Fecha de recolección: 05/11/2013-16/11/2015

Clasificación temática:

Conservación de la Biodiversidad

Resumen

This dataset illustrates the variation of species in intertidal benthic communities along an organic enrichment gradient. The study encompassed impacted and non-impacted areas in Mar del Plata and Quequén-Necochea, Buenos Aires, Argentina. Sampling was conducted during the spring, employing quantitative methods for the acquisition and analysis of biological samples. The aim is to identify pollution sentinel species to facilitate the effective management of natural resources.

Métodos

The study area extends from Punta Rasa (36°17′23″S - 56°46′53″W) to Bahía Blanca (38°45′22″ S - 62°15′07″ W). The locations to be surveyed were selected considering, on the one hand, that they are coastal-port cities and, therefore, with great anthropic activity (high number of inhabitants, maritime transport, fishing, presence of sewage discharges, rivers, estuaries, tourism, etc.). On the other hand, beaches with less anthropic impact will be surveyed to establish comparisons. Mar del Plata was selected to carry out more intensive surveys, both spatially and temporally, since it has a high incidence of tourism. The locations selected for the surveys in the province of Buenos Aires are: Punta Rasa, Villa Gesell (Faro Querandí), Mar de Cobo, Mar del Plata, Miramar, Centinela del Mar, Quequén, Balneario Reta, Monte Hermoso, Pehuén-Có and Bahía Blanca. This temporary sampling allows the evaluation of the effect of the increase in tourism that generally occurs in summer. Biological samples were obtained in the upper intertidal zone, corresponding to the upper mediolittoral horizon, using a cylindrical sampler with a base surface of 78 cm² and a length of 20 cm, and were placed in plastic jars. Samples were taken randomly within the 4 sampling sites. At each site, 9 macrobenthos samples were collected at random. The sampler was buried in the community matrix until it came into contact with the substrate, and the matrix was removed with a spatula. Each sample unit (MU) (fauna and sediment retained in the matrix) was fixed in formalin in 5% seawater. In the laboratory, each MU was sieved through a 500 μm mesh and the material retained on the sieve was preserved in 70% alcohol. Subsequently, the retained organisms were identified under a stereomicroscope, counted, and preserved in a 70% ethanol solution.

Palabras clave: IMPACTO ANTROPICO, BIOINDICADOES, DIGITALIZACIÓN

Alcance geográfico

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Identificador del recurso

URI: http://hdl.handle.net/11336/284674

Colecciones

Datos de Investigación(CCT - MAR DEL PLATA)
Datos de Investigación de CTRO.CIENTIFICO TECNOL.CONICET - MAR DEL PLATA

Datos de Investigación(IIMYC)
Datos de Investigación de INSTITUTO DE INVESTIGACIONES MARINAS Y COSTERAS

Citación

Llanos, Elizabeth Noemi; Saracho Bottero, Maria Andrea; Pujol, Maria Gabriela; Marcomini Scibilia, Yazmin; (2026): Macrobenthos in areas with organic enrichment: Mar del Plata and Quequén effluents, Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. (dataset). http://hdl.handle.net/11336/284674

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Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial 2.5 Unported (CC BY-NC 2.5)