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Bryophyte communities and seston in a karst stream (Jankovac Stream, Papuk Nature Park, Croatia) (CROSBI ID 174264)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

Špoljar, Maria ; Dražina, Tvrtko ; Ostojić, Ana ; Miliša, Marko ; Gligora Udovič, Marija ; Štafa, Dagmar Bryophyte communities and seston in a karst stream (Jankovac Stream, Papuk Nature Park, Croatia) // Annales de limnologie, 48 (2012), 1; 125-138. doi: 10.1051/limn/2011057

Podaci o odgovornosti

Špoljar, Maria ; Dražina, Tvrtko ; Ostojić, Ana ; Miliša, Marko ; Gligora Udovič, Marija ; Štafa, Dagmar

engleski

Bryophyte communities and seston in a karst stream (Jankovac Stream, Papuk Nature Park, Croatia)

Investigation of bryophyte communities in karst Jankovac Stream (Papuk Nature Park, Croatia) was carried out once a month from July 2008 to June 2009. Samples were taken from two microhabitats, hypocrenal Jankovac Spring, covered by dense bryophyte clusters (90% bottom cover), and Jankovac Waterfall, covered by scattered bryophyte clusters (50% bottom cover). At the same time, seston samples were collected at the spring as the source site and after the Jankovac Waterfall, as the outflow site. The main goals of this study were to establish: (i) the algal, protozoan and metazoan bryophyte community assemblages in two lotic microhabitats differing in percentage of bryophyte cover ; (ii) the influence of environmental factors on the structuring of the bryophyte community ; (iii) structure of seston at the source site and the outflow site. In total, within the bryophytes, 172 taxa were determined: 68 algae, 55 protozoa, 24 meiofauna and 25 macroinvertebrates. Statistically significant differences between the two study sites, spring and waterfall, were established testing thirteen environmental parameters. In dense bryophyte clusters, community structure was determined by flow velocity and pH, and macroinvertebrates achieved higher diversity and abundance contrary to scattered bryophyte clusters. In latter, community accomplished higher abundance and diversity (algae, Protozoa, meiofauna), governed by amount of suspended organic matter and epiphyton. In contrast to previous studies, inverse ratio of community diversity and abundance versus percentage of bryophyte cover, we assume to be outcome of enrichment scattered bryophyte clusters by seston. Additionally, effects of anthropogenic hydromorphological disturbance are reflected in macroinvertebrate abundance reduction.

flow velocity; algae; meiofauna; Protozoa; macroinvertebrates

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Podaci o izdanju

48 (1)

2012.

125-138

objavljeno

0003-4088

10.1051/limn/2011057

Povezanost rada

Biologija

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