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

A1 Journal article (refereed)


Internal Authors/Editors


Publication Details

List of Authors: Lundberg C, Lonnroth M, von Numers M, Bonsdorff E
Publisher: PERGAMON-ELSEVIER SCIENCE LTD
Publication year: 2005
Journal: Marine Pollution Bulletin
Journal acronym: MAR POLLUT BULL
Volume number: 50
Issue number: 11
Start page: 1185
End page: 1196
Number of pages: 12
ISSN: 0025-326X
eISSN: 1879-3363


Abstract

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.


Keywords

coastal areas, Gulf of Finland, long-term trends

Last updated on 2019-10-12 at 03:40