Naslov
The contribution of gastropod biomass in macrobenthic communities of a karstic river

Autori
Habdija, Ivan ; Lajtner, Jasna ; Belinić, Ines

Izvornik
Internationale Revue der gesamten Hydrobiologie (0020-9309) 80 (1995), 1; 103-110

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
freshwater gastropods ; biomass ; trophic relationships ; karstic running waters

Sažetak
This study evaluated the standing crop biomass of freshwater snails and its spatial distribution according to four substrate types (boulders, cobbles, gravel covered with periphyton and gravel covered with macrophytes). The study site, in the Kupa River of the NW Dinarid area of Croatia, is in a karstic region. Depending on habitat, the gastropod wet biomass Varied from 6.4 % to 43.8 % of the total macroinvertebrate biomass per unit area. The gastropods are the dominant component of biomass on boulder substrates in the upper region of the river, and on gravel substrates covered with macrophytes, in the lower course. It was found that gastropods are also the dominant component of the functional group of scrapers. The average annual gastropod biomass constitutes more than 80 % of scrapers at sampling sites in the upper and lower regions of the river.

Izvorni jezik
Engleski

Znanstvena područja
Biologija

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