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Ecología y crecimiento de Cardium edule L. en el estuario del río Miño (N.W. de España)

Authors: Figueras Monfort, Antonio;

Ecología y crecimiento de Cardium edule L. en el estuario del río Miño (N.W. de España)

Abstract

[ES] Consideramos que quedan muchos y muy interesantes puntos por esclarecer en lo que respecta a la ecología y crecimiento de Cardium en la playa de Camposancos, no obstante del presente estudio pueden deducirse de momento las siguientes conclusiones : 1.ª ~Cardium edule en esta zona se nos presenta como una especie ampliamente eurioica. A parte de unas exigencias mínimas de soltura y aireación del substrato y de producción primaria en el mismo puede soportar grandes variaciones de salinidad y temperatura, cosa que no le ocurre en otras playas de ambiente menos continental. Aquí puede soportar salinidades que van desde 8,9 % a 35,2. 2ª. La superviviencia de la población de Cardium se ve seriamente amenazada por la depredación de que es objeto por parte de las aves marinas. 3ª. Las condiciones microecológicas adversas de una playa del tipo que se considera y que se quiera dedicar al semicultivo de Cardium pueden remediarse mediante dispositivos que corrijan artificialmente el substrato poniéndolo en condiciones de habitabilidad, para lo cual basta con imitar lo que sucede en la naturaleza misma. 4ª. Aunque es prematuro dar datos de crecimiento sin haber estudiado uno o varios ciclos completos, de los que se poseen actualmente parece deducirse que en esta zona Cardium de 25 mm crece 2 mm en dos meses de otoño, mientras que el de 11 mm crecería en el mismo intervalo 5 mm.

[EN] In the present paper, the ecology and growth of Cardium edule L. in a beach of the «Miño» river (NW of Spain) is studied. The author arrives at the following conclusions : a) C. edule, in that habitat, is a very euryoic species, principally in relation with the salinity and temperature. It can support from 2,9 to 35,2 per thousand salinities. b) Depredation by sea and shore birds is a menace to its survival. o) It is not difficult to amend the adverse ecological conditions of the bottom by means of several mechanisms conducing to wash artificially the mud of the beach. d) It seems that from September to the end of November, Cardium edule specimens of 11 mm grow 5 mm, and those of 25 mm grow 2 mm.

12 páginas, 4 figuras.

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This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
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