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Catchment Report: Zelivka, Czech Republic – Trend Analysis, Retention and Source Apportionment

SYSNO ASEP	0030119
Document Type	V - Research Report
R&D Document Type	V - Research Report
Title	Catchment Report: Zelivka, Czech Republic – Trend Analysis, Retention and Source Apportionment
Title	Zpráva o povodí: Želivka, Česká republika – analýza trendů, retence a rozdělení zdrojů
Author(s)	Kronvang, B. (DK) Larsen, S. E. (DK) Jensen, J. P. (DK) Andersen, H. E. (DK) Hejzlar, Josef (HBU-Z)
Issue data	Oslo: Norwegian Institute for Water Research, 2005
ISBN	82-577-4792-0
Series	EUROHARP Report
Series number	17-2005
Number of pages	23 s.
Language	eng - English
Country	NO - Norway
Keywords	phosphorus ; nitrogen ; diffuse sources ; nutrient retention
Subject RIV	DJ - Water Pollution ; Quality
CEZ	AV0Z60170517 - HBU-Z, BC-A (2005-2011)
Annotation	Concentrations and concentration time trends of nutrients in streams and reservoirs, nutrient retention, and nutrient source apportionment were evaluated for the Zelivka catchment during the period 1993–2000. Kendall’s seasonal trend test with flow-adjustment revealed a downward non-significant trend for total nitrogen concentrations and an upward non-significant trend for total phosphorus concentrations. The average annual nutrient retention in reservoirs and streams in the Zelivka catchment has been calculated at 1185 t N and 12 t P. A source apportionment showed that diffuse sources contributed on average 81% of total nitrogen loads and 11% of total phosphorus loads during the period 1998–2000. The average loss of total nitrogen and total phosphorus from agricultural areas amounted to 25 kg N/ha (1993–2000) and 0.04 kg P/ha (1998–2000), respectively.
Workplace	Institute of Hydrobiology (until 2005)
Contact	Václava Lavičková, lavickova@hbu.cas.cz, Tel.: 387 775 889
Year of Publishing	2006

Number of the records: 1