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National management measures to control nonpoint source pollution from forestry
2005
Synthetic- and bio-polymer use for runoff water quality management in irrigated agriculture
2005
Sojka, R.E. | Entry, J.A. | Orts, W.J. | Morishita, D.W. | Ross, C.W. | Horne, D.J.
Low concentrations of synthetic- or bio-polymers in irrigation water can nearly eliminate sediment, N, ortho- and total-P, DOM, pesticides, micro-organisms, and weed seed from runoff. These environmentally safe polymers are employed in various sensitive uses including food processing, animal feeds, and potable water purification. The most common synthetic polymer is anionic, high purity polyacrylamide (PAM), which typically provides 70 - 90% contaminant elimination. Excellent results are achieved adding only 10ppm PAM to irrigation water, applying 1 - 2kgha+1 per irrigation, costing $4 - $12kg+1. Biopolymers are less effective. Using twice or higher concentrations, existing biopolymers are ≈60% effective as PAM, at 2 - 3 times the cost. A half million ha of US irrigated land use PAM for erosion control and runoff protection. The practice is spreading rapidly in the US and worldwide. Interest in development of biopolymer surrogates for PAM is high. If the supply of cheap natural gas (raw material for PAM synthesis) diminishes, industries may seek alternative polymers. Also "green" perceptions and preferences favor biopolymers for certain applications.
Show more [+] Less [-]Management of [water] reservoir outflow
2005
Curcic, S. E-mail:curcics@kg.ac.yu | Ostojic, A. | Comic, Lj.(Prirodno-matematicki fakultet, Kragujevac (Serbia and Montenegro). Institut za biologiju i ekologiju)
Man-made lakes cause direct and indirect changes in environmental conditions downstream of the water reservoir. Management must consider these water quality and environmental effects as well as uses of the river below the water reservoir.
Show more [+] Less [-]Phytoplankton contents, physico-chemical and saprobiological characteristics of Danube river, on Bezdan locality [Serbia (Serbia and Montnegro)]
2005
Cadjo, S.(Republicki hidrometeoroloski zavod Srbije, Beograd (Serbia and Montenegro)) E-mail:scadjo@hidmet.sr.gov.yu | Djurkovic, A. | Miletic, A. | Bugarski, R.
The results of the examination point out on heterogenity of the phytoplankton community. The presence of 212 taxa has been noted. In the way of quality the green algae are dominant. In all the aspects of the quantitative analysis the domination of Bacillariophyta has been noted, first of all the centric forms. The amount of nutrients on the locality of border with Hungary is considerable, thus during low water and high temperature, the intensive algae development is usual.
Show more [+] Less [-]Water quality changes in the chanel network
2005
Belic, S. | Savic, R. | Belic, A.(Poljoprivredni fakultet, Novi Sad (Serbia and Montenegro). Departman za uredjenje voda)
Aspiration to multipurpose use of built drainage systems structure in Vojvodina, total length about 20,000 km, must be followed by detailed investigation of influence of water stream through detailed canal network (DCN) from water source to the final consumer. Typical cases of two purpose use of DCN is supply canal of drainage / irrigation system on region Middle Banat, Zrenjanin, characterized by taking water from Begej river and long stream to the final consumer. Influence of long stream through DCN to water quality change are investigated on mentioned localities during 2004. Obtained results are pointed out water quality decrease in these conditions. Decrease is expressive in case of smaller flow. This paper deals with estimation of water suitability for irrigation taking into consideration possible undersirable effects of this water to irrigated soil.
Show more [+] Less [-]Algal and saprobiological characteristics of river Crnojevica [Montenegro (Serbia and Montenegro)] water in summer period of 2004. Preliminary investigations
2005
Obuskovic, Lj.(Institut za bioloska istrazivanja Sinisa Stankovic, Beograd (Serbia and Montenegro)) | Djuraskovic, P.(Hidrometeoroloski zavod Crne Gore, Podgorica (Serbia and Montenegro))
The river Crnojevica is a subject of lasting manny years physicochemical and microbiological investigations, which show worring pollutants presence into the water current. This work represent preliminary investigations of Crnojevica river water algal flora (phytoplankton and phytoperiphyton), carrying out over summer period of 2004. Aim of the investigation was to point, based on algal analysis, as reliable indicators of water quality and ecological status of an aquatorius, the need to protect the river from permanent communal and industrial waste water pollution. The hyperproduction of phytoplankton in the investigation period was stated, but it varys along the current, in accordance with efluent inflow. On the base of saprobiological analysis of phytoplankton, determinated water quality was in class 2, till the worse was noted at T2 measure place, on the inflow place of Rijeka Crnojevica settlements sewage.
Show more [+] Less [-]Estimate of the emission of phosphorus from inundation zone of accumulation lake Rovni [Serbia (Serbia and Montenegro)]
2005
Manojlovic, D.(Univerzitet u Beogradu, Beograd (Serbia and Montenegro). Hemijski fakultet) E-mail:manojlo@chem.bg.ac.yu | Krsmanovic, V. | Golubovic, R. | Savic, S.
Eutrophication is one of the main problems of water deterioration in accumulation lakes. Phosphorus is considered as the key factor for eutrophication of lacustrine water. Its concentration in lakes originates from external input and the emission from the sediment. It was necessary to determine the substrates of phosphorus by sequential extraction in order to determine the dynamics and bioavailability of phosphorus. On the basis of results obtained the proposals for the preparation of land were made in order to minimise the input of phosphorus.
Show more [+] Less [-]Determination of lead content in stream water of river Ibar [Serbia (Serbia and Montenegro)] by potentiometric stripping analysis (PSA)
2005
Babincev, Lj.M.(Fakultet tehnickih nauka, Kosovska Mitrovica (Serbia and Montenegro)) E-mail:babicev@ptt.yu | Novakovic, I.D. | Rajakovic, Lj.V.
Potentiometric stripping analysis (PSA) is highly sensitive electroanalytical method for determination of traces of heavy metals. In this paper detection limit and linearity of potentiometric stripping analysis for lead was investigated. Method was successfully used for determination of traces of lead ion (detection limit 5 microgram/cubic dm) in stream water of river Ibar, before and after joint of potential pollutant.
Show more [+] Less [-]Population dynamic of bacteria in the Moraca river [Montenegro (Serbia and Montenegro)]
2005
Radonjic, D. | Joksimovic, N.(Institut za javno zdravlje, Podgorica (Serbia and Montenegro))
During the 2004 research of Moraca river water quality was conducted onto six localities: Pernica, Zlatica, Gradska plaza, Kolektor, Grbavci and Vukovci. Physical, chemical and microbiological properties were analyzed. Physical and chemical analyses done were: water temperature, air temperature, pH, electro-conductivity, KMnO4 consumption, dissolved O2 and BCO5 (biological consumption of oxygen in five days). Microbiological analysis included determination of the total number of aerobic mezophyll bacteria, oligotrophic and heterotrophic bacteria, as well as the most probable number of colliform bacteria. In addition to distribution and population dynamics, identification of the bacteria was also done. Microbiological water analysis were performed using standard bacteriologic methods and identification of the bacteria using INVIC or, when needed, using API diagnostics.
Show more [+] Less [-]Ecological potential of the Hydrosystem Danube - Tisza - Danube in North and Middle Banat region (Vojvodina [Serbia and Montenegro]) according to phytoplankton analyses
2005
Nemes, K. E-mail:karolina@ib.ns.ac.yu | Simeunovic, J. | Bokorov, M. | Radnovic, D. | Matavulj, M.(Prirodno-matematicki fakultet, Novi Sad (Serbia and Montenegro). Departman za biologiju i ekologiju)
The research of phytoplankton in water of Hydrosystem DTD in Banat region (canal complex and the rivers Zlatica, Old Begej) has been carried out seasonally i.e. in the spring, summer, autumn and winter of 2003 and 2004. According to guidance of Anon (2003) we selected biological element - phytoplankton in establishing referral body of water with maximum ecological potential (MEP) of the Danube-Tisza-Danube Hydrosystem also classified as artificial/heavily modified water. Classification was made according to Sorensen indices of similarity. Reference conditions with MEP were assigned to the HS DTD, canal Banatska Palanka - Novi Becej, Novi Becej - Melenci stretch. As determined by phytoplankton analyses, investigated canals and rivers could be classified as waters of good ecological potential, except the rivers Zlatica, Stari Begej (Old Begej) and some sections of the Canal Plovni Begej (Navigable Begej) what was designated to moderate ecological potential.
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