River Coatán (untreated, 2001) Rio Pinolapa (autumn) Estanzuela El Ticuiz (spring 1) San Javier Sierra of Huautla Biosphere Reserve The Ecological Register
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Argia oenea (odonate): 6 samples
Standardised estimates are produced by subsampling and then extrapolating.
Raw richness may be higher when an abundance distribution is uneven.