Utjecaj hidroelektrane Lešće na nizvodne zajednice makroskopskih beskralješnjaka rijeke Dobre

master's thesis

• Title (english): The impact of Hydroelectric Power Plant Lešće on macroinvrtebrate communities of downstream reaches of the Dobra River
• Author: Ivana Pušić
• Mentor: Sanja Gottstein (mentor)
• Committee member: Sanja Gottstein (predsjednik povjerenstva)
• Committee member: Domagoj Đikić (član povjerenstva)
• Committee member: Zrinka Ljubešić (član povjerenstva)
• Committee member: Jasna Lajtner (član povjerenstva)
• Granter: University of Zagreb; Faculty of Science; (Department of Biology); Zagreb
• Defense date and country: 2013-06-26, Croatia
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Biology

Abstract

Na tri postaje riječnog toka Gojačke Dobre, nizvodno od HE Lešće, prikupljeni su replikativni uzorci makrozoobentosa u razdoblju od srpnja 2007. do srpnja 2011. godine na dva dominantna tipa mikrostaništa, mahovini i kamenitom supstratu. Uzorkovanje je provedeno pomoću standardne četvrtaste bentos mreže veličine oka 200 μm, pri čemu su na postaji D1 kvantitativni uzorci prikupljani na mahovini i kamenom supstratu, a na postajama D2 i D3 samo na mahovini. Prema broju utvrđenih jedinki različitih svojti određen je sastav i struktura populacije makroskopskih beskralješnjaka, te je utvrđena promjena sastava zajednice i dinamika brojnosti jedinki. Najveće razlike utvrđene su na postaji najbližoj brani, koja se očitovala u povećanju brojnosti skupine Diptera, a smanjenju brojnosti skupina Plecoptera, Coleoptera i Gastropoda. Može se zaključiti da je izgradnja brane HE „Lešće“ uzrokovala promjene u fizikalno-kemijskim čimbenicima vode, što je posljedično utjecalo na promjene u sastavu i strukturi zajednica makroskopskih vodenih beskralješnjaka.

Abstract (english)

Replicate macroinvertebrate samples were collected from September 2006 to July 2011 on three stations on the Gojačka Dobra River downstream of the HPP “Lešće”, and on two dominating types of microhabitats, moss and stony substrate. A standard rectangular benthic net of 200 μm mesh size was used while sampling. On the station D1 quantitative samples were collected on moss and stony substrate while on the stations D2 and D3 samples were collected only on moss. The composition and structure of macroinvertebrates communities and changes in community composition and abundance were determined. The highest differences were found on the station closest to the dam, which were reflected in the increasing abundancy of Diptera and decreased abundancy of Plecoptera, Coleoptera and Gastropoda. In conclusion, the construction of the dam "Lešće" caused changes in the physico-chemical parameters of water, which caused changes in the composition and structure of macroinvertebrate communities.

• Keywords: promjena brojnosti; promjene strukture zajednice; mahovina; kameniti supstrat
• Keywords (english): changes inabundance; changes in community structure; moss; stony substrate
• Language: croatian
• URN:NBN: urn:nbn:hr:217:961650
• Study programme: Title: Ecology; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra ekologije i zaštite prirode (magistar/magistra ekologije i zaštite prirode)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Access restricted to students and staff of home institution
• Created on: 2017-04-27 12:43:32