Naslov
Epiphytic gastropods and food supplies in relation to macrophyte stands

Autori
Barbara Žeželj, Ivana Zrinščak, Maria Špoljar, Tvrtko Dražina, Ana Ostojić, Maja Duić Sertić, Daniel Matulić, Jasna Lajtner

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Book of abstracts and programme, Joint Symposia 1st Central European Symposium for Aquatic Macroinvertebrate Research and 11th Hungarian Symposium for Aquatic Macroinvertebrate Research, Compiled by Peter Mauchart and Zoltan Csabai. Pecs-Szarvas, 2014. / Peter Mauchart, Zoltan Csabai - Pečuh : Szarvas, 2014, 79-79

Skup
1st Central European Symposium for Aquatic Macroinvertebrate Research and 11th Hungarian Symposium for Aquatic Macroinvertebrate Research

Mjesto i datum
Szarvas, Mađarska, 10.04.2014. - 13.04.2014

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
shallow lakes/ponds; dissected/undissected plants; algae; protozoans; rotifers

Sažetak
Macrophyte stands constitute numerous diverse habitats and determine environmental conditions suitable for communities rich in diversity and abundance of protozoans, micro- and macroinvertebrates. We studied gastropod and epiphyton structure in three water bodies differing in morphometry (depth, area), transparency, nutrient concentrations, macrophyte cover percentages and plant architecture types (undissected, flotant, Nuphar luteum ; dissected, submerged, Ceratophyllum demersum ). The main goals were to ascertain: 1) spatial changes of epiphytic gastropod communities in stands with different plant architecture ; 2) influence of environmental factors and epiphytic food supplies in the gastropod community structuring. Results of our study suggest that plant coverage and architecture are main factors governing differences in the zooepiphyton and gastropod community structures, in Ceratophyllum pond up to 70 % of macrophyte coverage and in Nuphar water bodies with less than 20 % of coverage. Small sized planorbid snails, mainly presented with Gyraulus taxa, showed affinity to Ceratophyllum stands characterised by higher algal biomass, zooepiphyton diversity and abundance. Larger sized physid snail, Physella acuta, showed preference to Nuphar stands, marked by lower epiphyton abundance and biomass. Grazers were dominant gastropod functional feeding guild in both macrophyte stands. Consequently, attached protozoans (gymnoamoebae, testaceans) and bdelloid rotifers constitute major amount in their feeding preferences. Thus, changes in macrophyte coverage would switch biotic interactions and concomitantly gastropod and aquatic community structures.

Izvorni jezik
Engleski

Znanstvena područja
Biologija

POVEZANOST RADA