Avtor/Urednik		Kernan, Marin; Brancelj, Anton; Clarke, Gina; Lami, Andrea
Naslov		Environmental and biological characteristics of high altitude Iochs in Scotland
Tip		članek
Vir		In: Catalan J, Curtis CJ, Kernan M, editors. Patterns and factors of biota distribution in remote European lakes. Stuttgart: Schweizerbart science publishers,
Leto izdaje		2010
Obseg		str. 379-417
Jezik		eng
Abstrakt		As part of a comprehensive evaluation of the status of remote mountain lake ecosystems throughout Europe, the response of key organisms in mountain lakes to variations in environmental gradients due to geography and c1imate, pollution and catchment characteristics in Scotland was examined. Samples were taken from the pelagic (zooplankton, bacteria and chlorophyll a) and littoral (benthic invertebrates and epilithic diatoms) zones. Surface sediment samples were taken for analysis of sub-fossil Cladocera, chironomids, diatoms and pigments. Concentrations of trace metaIs, persistent organic pollutants and spheroidal carbonaceous particles were also measured. This paper describes the variation in species composition and environmental characteristics of upland lochs across northern Scotland and examines how the former may be related to the latter. Multivariate techniques were employed to examine patterns and relationships within and among the multivariate species and environmental datasets. Results show that in remote mountain lakes in Scotland, biological assemblages of key organi sms groups are driven by a number of environmental gradients, in particular organic content and acid-base status. It appears that these systems can broadly be divided into two main types, on the basis oftheir species composition. Low alkalinity lochs with sparse soil coverage at higher altitudes have distinctly different biological communities compared with lochs with high level s of organic matter and high proportions of peaty soils in the catchments.
Deskriptorji		ECOSYSTEM FRESH WATER ZOOPLANKTON ROTIFERA CHIRONOMIDAE DIATOMS BACTERIA CHLOROPHYLL GEOLOGIC SEDIMENTS WATER POLLUTANTS INVERTEBRATES SCOTLAND