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标题：RELATION BETWEEN PHYSICO-CHEMICAL PARAMETERS AND ICHTHYOFAUNA ABUNDANCE IN A TROPICAL COASTAL LAGOON
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作者：Alfredo Ortega-Rubio ; Esther Guadalupe Cabral-Solís ; René Macías-Zamora 等
期刊名称：Fresenius Environmental Bulletin
印刷版ISSN：1018-4619
出版年度：2015
卷号：24
期号：8
页码：2434-2443
语种：English
出版社：PSP Publishing
摘要：Cuyutlan Lagoon is a tropical coastal lagoon in the state of Colima, Mexico. It is the most important coastal body of the state due to its extension of 7.200 ha, its millenarian salt extraction and its fishing activity integrated by a diversity of fish and crustaceans species that maintain more than 600 families. With the aim of describing the relationship of this fauna abundance with the environmental and water temperature, salinity and pH, monthly samples of physicochemical parameters and ichthyofauna abundance, were taken in 14 sampling stations from January to December 2002. The highest abundance was observed in the area with strongest marine influence and during summer’s rainy season; the lowest abundance was recorded in the colder season and the shallow sites with the lowest influence of the tide. The analysis of principal components established that water temperature was the environmental parameter with greater influence on the abundance. Graphically the trend line showed a direct relationship among the principal component and abundance in eight sampling sites, and in six sites, an inverse relation. In nine sampling sites the relation is statistically significant. The results of our study shows that fish abundance and diversity are positively correlated with water temperature with an optimum of 26 to 30ºC, and negatively correlated with a high salinity, below of 43 ppm, and also negatively correlated with a low pH, below of 7.21. Our findings could be useful to design habitat enhancement measures, such as the removal of man-made barriers, and fisheries management practices, such as establish fishing restrictions during the winter. The application of such suggestions can contribute to ameliorate the economic conditions of the local fishermen.
关键词：Ichthyofauna; abundance; Coastal Lagoon; temperature; pH; salinity; Mexico