Macroinvertebrate species and assemblages in the headwater streams of the River Tyne, northern England in relation to land cover and other environmental variables

Autor:	Stephen P Rushton, J. G. Pilkington, R. P. McBlane, M. D. Eyre
Rok vydání:	2005
Předmět:	Hydrology geography Environment variable geography.geographical_feature_category Habitat Ecology Drainage basin Plant cover Land cover STREAMS Aquatic Science Hydrobiology Invertebrate
Zdroj:	Hydrobiologia. 544:229-240
ISSN:	1573-5117 0018-8158
Popis:	The macroinvertebrate species and assemblages of headwater streams of the River Tyne catchment in northern England were classified and their relationship with environmental variables based on stream structure, water acidity, distance from source and land cover investigated using constrained ordination and logistic regression. Fuzzy classification of data from 322 stream sites generated five assemblages. Stream structure, quantified as an exposure index, was found to be the most important environmental variable, with water acidity also important. Distance from source and land cover had less influence on species and assemblage distribution. A considerable amount of variation in assemblage distribution was explained using a two-variable logistic regression with stream structure (exposure index) and water acidity (pH) in a template. Site structure and water acidity appeared to be related to drift, geology and topography with little anthropogenic influence. The applicability of the habitat template concept for explaining the distribution of stream macroinvertebrates is discussed.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::8a9cfefece7929d5329aae6c5ade95e8 https://doi.org/10.1007/s10750-005-0861-6 Zobrazit plný text záznamu Plný text ve formátu PDF