Tisbe (Copepoda: Harpacticoida) species from the Lagoon of Venice. I. Seasonal fluctuations and ecology

摘要: Distribution and abundance of Tisbe species were studied throughout a period 3 years at stations in the Lagoon Venice (Italy). At 2 other samples taken occasionally, as also Lido station (open sea). Twelve may be considered common inhabitants lagoon, appear to occasional transients, compared 9 found Lido. A comparison physical data shows that similar temperature salinity, but differed primarily pH values, sediment characteristics, algal substratum faunal benthic community. The fact remarkable differences composition distribution could observed between various parts lagoon open sea, indicates salinity are not so important for diversity biotic factors. particularly strong difference existed bottom from pilings, which constitute very special biotope communities seem preferred habitat T. lagunaris cucumariae. suggest there is certain interaction holothuriae species. Whenever was abundant, rare, clodiensis, dobzhanskii (Stations 1 2) sp. (Station 3) attained high relative whenever decreased considerably number. represents certainly hardiest displaying great ability cope with stress conditions, even those present interior where fluctuations temperature, oxygen prevail.