Abstract
The composition, seasonal variation and diversity of the mayfly fauna in four streams (two watersheds) of the Guatopo National Park were studied biweekly for one year (February 1996-February 1997). The density of the Ephemeroptera has a distinctive cycle with maximum abundance at the middle of the dry season and minimum during the rainy season. The abundance of this community is significantly different among rivers belonging to different watersheds. The Leptophlebiidae (Thraulodes sp.) was always the most abundant family, in all rivers, followed by the Leptohyphiidae. However, the latter showed a higher diversity than the former. Principal Component Analysis of the data indicated that the community structure of the mayfly fauna is more similar among rivers belonging to the same watershed regardless of differences in morphometric variables of the streams.
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Maldonado, V., Pérez, B., Cressa, C. (2001). Seasonal Variation of Ephemeroptera in Four Streams of Guatopo National Park, Venezuela. In: Domínguez, E. (eds) Trends in Research in Ephemeroptera and Plecoptera. Springer, Boston, MA. https://doi.org/10.1007/978-1-4615-1257-8_15
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DOI: https://doi.org/10.1007/978-1-4615-1257-8_15
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