Author/Editor		Rivas-Casado, M; Bellamy, P; White, S; Maddock, I; Dunbar, M; Booker, D
Title		Defining spatial and temporal hydromorphological sampling strategies for the Leigh Brook river site
Type		članek
Source		In: Baptist M, Duel H, Dunbar M, et al, editors. Proceedings from the final meeting COST 626: European aquatic modelling network; 2005 May 19-20; Silkeborg. Silkeborg: National environmental research institute,
Publication year		2005
Volume		str. 293-304
Language		eng
Abstract		Detailed surveys of depth and velocity are undertaken to describe hydro-ecological status of rivers. Fieldwork for these surveys is time consuming and expensive. This paper aims to describe the methodology applied in order to determine the most suitable depth sampling strategy for effective field data collection and river representation in time and space at the Leigh Brook river site, Worcester, UK. The accuracy of three different sampling strategies for predicting depth at non-measured points has been compared and the mesohabitats that better characterise depth changes due to variations in discharge have been identified. The results show that depth changes due to discharge change are mainly located at shallow and deep glide mesohabitat types. The analysis for the comparison of sampling strategies indicates that grid sampling strategies give better results than regular transects. Since the results also show that higher errors in predictions are obtained in the deepest areas, higher sampling densities should be applied in these locations.
Descriptors		FRESH WATER ECOSYSTEM DATA COLLECTION ANALYSIS OF VARIANCE GREAT BRITAIN