A multivariate assessment of coastal eutrophication. Examples from the Gulf of Finland, northern Baltic Sea

A1 Originalartikel i en vetenskaplig tidskrift (referentgranskad)

Interna författare/redaktörer

Publikationens författare: Lundberg C, Lonnroth M, von Numers M, Bonsdorff E
Publiceringsår: 2005
Tidskrift: Marine Pollution Bulletin
Tidskriftsakronym: MAR POLLUT BULL
Volym: 50
Nummer: 11
Artikelns första sida, sidnummer: 1185
Artikelns sista sida, sidnummer: 1196
Antal sidor: 12
ISSN: 0025-326X
eISSN: 1879-3363


The Gulf of Finland is the sub-basin of the Baltic Sea that is most seriously affected by the effects and consequences of eutrophication. In this study, physical, chemical and biological long-term data (1980-2002) from the Finnish environmental monitoring programme is used to detect possible gradients of eutrophication in the Gulf. The Finnish coastal area of the Gulf of Finland is divided into three parts in an east-west direction, and into three zones (inner, middle, Outer) according to differences in descriptive parameters. We use principal component analysis (PCA) to study spatial and temporal differences in relation to eutrophication. Clear differences between coastal and offshore areas are seen. Differences between eastern and western Gulf are not as evident. The changes due to eutrophication are larger for the inner archipelago, whereas the outer areas have been more stable over time. The concentration of oxygen is the strongest driving Factor for eutrophication in the region. (c) 2005 Elsevier Ltd. All rights reserved.


coastal areas, Gulf of Finland, long-term trends

Senast uppdaterad 2020-01-04 vid 04:06