Naslov
WATER QUALITY OF WATERCOURSES DRAINING AGRICULTURAL, WETLAND AND FORESTED CATCHMENTS

Autori
Peršić, Vesna ; Kočić, Aleksandra ; Horvatić, Janja

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

Izvornik
Zbornik sažetaka (12. Hrvatski biološki kongres s međunarodnim sudjelovanjem) / Klobučar, Göran ; Kopjar, Nevenka ; Gligora Udovič, Marija ; Lukša, Žaklin ; Jelić, Dušan - Zagreb : Hrvatsko biološko društvo, 2015, 155-155

Skup
12. HRVATSKI BIOLOŠKI KONGRES s međunarodnim sudjelovanjem

Mjesto i datum
Sveti Martin na Muri, Hrvatska, 18.09.2015. - 23.09.2015

Vrsta sudjelovanja
Poster

Vrsta recenzije
Domaća recenzija

Ključne riječi
nutrient enrichment experiment ; trophic conditions ; N/P ratio

Sažetak
Assessment of resources that are limiting algal growth and evaluation of the trophic status of rivers and wetlands, which present hydrological irregularities, incorporates different approaches in order to provide an acceptable understanding of the problem. Our goal was to provide information on the temporal and spatial variation of resource limitation of algal growth rates to create a scientific basis for evaluating regional strategies of nutrient management in the investigated catchments. Therefore, a sensitive test was designed to assess quantitatively algal growth after nutrient additions to obtain a biologically relevant measure of nutrient deficiency. As a result, a bioassay method was introduced for the evaluation of trophic status and limiting nutrients in the investigated watercourses. The observed variability in many of the physical and chemical constituents, as well as algal growth potential, was attributed to the significant influence of both catchment land use and sampling time. Accordingly, the water quality of watercourses in the catchment with the highest percentage of arable land was determined to be very bad with extremely high phosphorus concentrations. Only moderate signs of distortion were observed in flowing waters of forested catchments as a result of anthropogenic activities. On the other hand, watercourses draining wetland watersheds showed even some nutrient deficiency.

Izvorni jezik
Engleski

Znanstvena područja
Biologija

POVEZANOST RADA