Naslov
Biomonitoring Of Surface Waters Using Duckweed (Lemna Minor L.)

Autori
Radić Brkanac, Sandra ; Stipaničev, Draženka ; Širac, Siniša ; Glavaš, Katarina ; Pevalek-Kozlina, Branka

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

Izvornik
Balwois 2010 Abstracts voulme II / Morell, Marc ; Popovska, Cvetanka ; Morell, Olivia ; Stojov, Vasko - Skopje : Građevinski fakultet Sveučilišta u Zagrebu, 2010, 539-539

ISBN
978-608-4510--04-8

Skup
Conference on water observation and information system for decision support

Mjesto i datum
Ohrid, Sjeverna Makedonija, 25.05.2010. - 29.05.2010

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
aquatic plant; growth; chlorophyll; toxicity

Sažetak
Water pollution by toxic micropollutants, which is predominantly the consequence of human activities (industry, agriculture and urbanisation) is one of the most critical problems concerning drinking water resources and environmental protection of water bodies. Usage of plant test species has proven essential in investigation, detection and quantification of toxic activity in the natural environment. Toxic effects were investigated in several surface waters (Sava River basin, Croatia) collected monthly over a 3 month-monitoring period. Duckweed (Lemna minor L.) is often used as a plant model because it is a widely spread monocot which multiplies rapidly. Heavy metals were determinated by atomic absorption spectrometry, while nutrients determination was conducted using spectrometry and ionic chromatography. The fitotoxic indicators (relative frond number, relative fresh weight, chlorophyll and carotenoid contents) were monitored after seven days of exposure. All samples of tested waters caused growth inhibition and decrease of chlorophyll and carotenoid contents. The biological effects of water samples appeared related to the physicochemical characteristics. Therefore, bioassays should be included, along with conventional chemical analysis, in water quality monitoring programs. The results also suggest that duckweed should be used in the biomonitoring of water quality because of its simplicity, sensitivity and cost-effectiveness.

Izvorni jezik
Engleski

Znanstvena područja
Biologija

POVEZANOST RADA