| aquatic coleoptera and heteroptera inhabiting waterbodies from berisso, buenos aires province, argentina. | coleoptera and heteroptera associated with aquatic environments were studied at berisso, near rio de la plata estuary (buenos aires province, argentina). four waterbodies were characterized and compared: artificial pond, shallow pool, stream and artificial channel. sampling was done twice a month, with a round sieve, for 12 months (april 1999 to april 2000). sampling was quantified using a discrete unit of time (one hour/worker). where floating vegetation was present, four 25 cm diameter samples ... | 2006 | 18457183 |