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Factors controlling hydrochemical and trophic state variables in 86 shallow lakes in Europe

In English

Författare

  • P Noges
  • T Noges
  • L Tuvikene
  • H Smal
  • S Ligeza
  • R Kornijow
  • W Peczula
  • E Becares
  • F Garcia-Criado
  • C Alvarez-Carrera
  • C Fernandez-Alaez
  • C Ferriol
  • RM Miracle
  • E Vicente
  • S Romo
  • E Van Donk
  • W van de Bund
  • JP Jensen
  • EM Gross
  • Lars-Anders Hansson
  • Mikael Gyllström
  • M Nykanen
  • E de Eyto
  • K Irvine
  • D Stephen
  • S Collins
  • B Moss
Visa allt

Summary, in English

In order to disentangle the causes of variations in water chemistry among European shallow lakes, we performed standardised sampling programs in 86 lakes along a latitudinal gradient from southern Spain to northern Sweden. Lakes with an area of 0.1 to 27000 ha and mean depth of 0.4-5.6 m located in low to high altitudes were investigated within the EC project ECOFRAME 1-4 times during June-October 2000-2001. Several variables like conductivity, alkalinity, abundance of submerged plants, concentrations of suspended solids, total nitrogen and phosphorus were latitude-dependent decreasing from south to north. Secchi depth, concentrations of total nitrogen, total phosphorus, suspended solids, and chlorophyll a correlated strongly with the presumed quality classes of the lakes. We came to the conclusion that the variability of shallow lakes in Europe is still mostly dependent on natural differences. Variables connected to lake morphometry, seasonality, basin geology and climate explained altogether nearly half of the total variability of lakes. The trophic state factor, describing mostly the human influence on lakes, was the strongest single factor responsible for nearly a quarter of the total variability of the studied European lakes.

Publiceringsår

2003

Språk

Engelska

Sidor

51-58

Publikation/Tidskrift/Serie

Hydrobiologia

Volym

506

Issue

1-3

Dokumenttyp

Konferensbidrag

Förlag

Springer

Ämne

  • Ecology

Nyckelord

  • hydrochemistry
  • European shallow lakes
  • latitude
  • ecological status

Conference name

International Conference on Limnology of Shallow Lakes

Conference date

2002-05-25 - 2002-05-30

Conference place

Balatonfured, Hungary

Status

Published

Forskningsgrupp

  • Aquatic Ecology

ISBN/ISSN/Övrigt

  • ISSN: 1573-5117
  • ISSN: 0018-8158