Structure of the diatom communities of the sediments of Lake Cocibolca and its relationship with the natural and anthropogenic events

Authors

DOI:

https://doi.org/10.5377/rtu.v10i28.11531

Keywords:

Cocibolca Lake, diatoms, index, diversity, sediment

Abstract

In order to identify diatoms and thier behavior in a sediment profile and thier relation topl natural and anthropogenic events, sediment sampling was carried out in Cocibolca Lake. A total of 46 taxa were identified with the highest diversity at the PLN I site (41 taxa) and the least at the PLN II site (24 taxa). The most representative genus in the PLN I were: Aulacoseira (12.20%), Fragilaria (7%), Navicula (12.20%), Nitzschia (7.32%), Pseudostaurosira (12.20%), and Surirella (9.76%). At the PLN II site they were: Aulacoseira (20.83%), Nitzschia (12.50%), Pseudostaurosira (12.50%), Surirella (8.33%), Cyclotella (8.33%) and Synedra (8 , 33%). Within the genus Aulacoseira the species A. muzzanensis showed to be the most dominant (44%; PLN I) and (64.58% PLN II).

Of the species found, four of them (Aulacoseira ambigua, A. subartica, Discotella stelligera and Stephanodiscus) show significant oscillations such as the replacement of one species by another that depends on environmental changes in the aquatic environment. The PLN I site shows more evidence of the changes that the body of water had at some time, which is reflected in the dominance of one species when another disappears. Presumably, for a time the conditions of the lake varied, being better observed at this site.

The application of the Shannon and Simpson indices show that the PLN I site is where the highest calculated values ​​are observed (1,081 and 2,412 bit) respectively

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References

Barber, H. G. & E. Y. Haworth, (1981). A guide to the morphology of the Diatom Frustule. Freshwater Biological Association. Scientific Publication No. 44, p. 105 - 109.

Bouza, N. Covarrubias, D. ( 2005). Estimación del índice de diversidad de Simpson en m sitios de muestreo. Revista Investigación Operacional.

Caballero, M.; Valadez, F. Y Rodriguez, (2014). Paleolimnología: Como descifrar la historia de los lagos y su entorno a partir del studio de sus sedimemtos.

Denys y de Wolf (1999). Diatoms as indicators of coastal paleoenvironments and relative sea-level change. In Stoermer, E.F. & J. P. Smol (eds.) The Diatoms: Applications for the Environmental and Earth sciences. Cambridge University Press New York: 277-297.

Escobar, J.; Restrepo, J.C. Y Martínez, J. I. (2005) “La paleolimnología como herramienta para el estudio y manejo de embalses”. Universidad Nacional de Colombia - Red de Revistas Científicas de América Latina, el Caribe, España y Portugal Sistema de Información Científica. vol. 8 Núm. 2 pp. 51-59.

García Rodríguez, F. et al. (2011). Diatoms, protein and carbohudrate sediment content as proxies for coastal eutrophication in Montevideo, Río de la Plata estuary, Uruguay. Braz j. Oceanogr 59(4): 293-310.

De Wolf, H. (1982). Methods of coding of ecological data from diatoms for cometer utilization. Med Rijks Geol Dienst 36:95-99.

Licursi et al. (2006): Diatoms assemblages from a turbid coastal plain stuary: Rio de la Plata( South of America). J Marsyst 62:33-45.

Mann, D. G. (2010). Diatoms

Margalef, (1983). Limnologia. Omega, 1001 pp.

Pla, L. (2006). Biodiversidad: inferencia basada en el índice de Shannon y la riqueza. Interciencia. Vol. 31 N. 8 ISSN 0378-1844.

Prygiel, J. and Coste, M. (2000). Guide méthologique pour I´Indice Biologique Diatomées. NFT 90-354. Étude Agence Bordeaux, March 2000, Agences de I´Eau France.

Sharov, A. (2008). Phytoplankton as an indicator in estimating long-term changes in the water quality of large lakes. Water Resour. 35 (6) 668–673.

Siqueiros-Beltrone, D. A. (2002). Diatomeas bentónicas de la Peninsula de baja California; diversidad y potencial ecológico CICIMA. Libros de Ciencias Marinas. IPN-UABCS

Smol, J. P. (2008). Pollution of Lakes and Rivers: A Paleoenvironmental Perspective, 2nd Edition. Blackwell Publ.383 pp.

Stevenson, R. J. & Pan, Y. (1999). Assessing environmental conditions in rivers and strems with diatoms. In the Diatoms: Applications for the Environmental and Earth sciences. Cambridge University Press, Cambridge University Press, pp.11-40.

Van Dam et al. (1994). A coded cheklist and ecological indicators values of freshwater diatoms from the Netherlands, Netherlands Journal of Aquatic Ecology, 28, 117-133

Vammen, Katherine; Pitty Tercero, Jorge y Montenegro Guillén, Salvador (2006). Evaluación del Proceso de Eutroficación del Lago Cocibolca,Nicaragua y sus causas en la Cuenca. In: Eutrofización en Sudamérica: Causas, Consecuencias y Tecnologías para Manejo y Control. Tundisi, José Galizia. ed.; Tundisi, Takako Matsumura. ed.; Galli, Corina Sidagis. ed., Instituto Internacional de Ecologia de Sao Carlos, pp. 35-58. ISBN 85-87418-05-X

Published

2021-06-02

How to Cite

Hernández González, S. E. (2021). Structure of the diatom communities of the sediments of Lake Cocibolca and its relationship with the natural and anthropogenic events. Torreon Universitario Magazine, 10(28), 111–124. https://doi.org/10.5377/rtu.v10i28.11531

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Sciences