Acta Ichthyologica et Piscatoria 21(S): 145-152, doi: 10.3750/AIP1991.21.S.15
Long-term changes in primary production and chlorophyll concentrations in the Southern Baltic
expand article infoJ. Nakonieczny, S. Ochocki, H. Renk

Corresponding author: J. Nakonieczny

© J. Nakonieczny, S. Ochocki, H. Renk.
This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Citation: Nakonieczny J, Ochocki S, Renk H (1991) Long-term changes in primary production and chlorophyll concentrations in the Southern Baltic. Acta Ichthyologica et Piscatoria 21(S): 145-152. https://doi.org/10.3750/AIP1991.21.S.15
Open Access
Abstract
The paper presents results of long-term investigations on primary production and chlorophyll a concentrations at two stations in the Southern Baltic (in the Gdańsk Deep and in the Bornholm Deep). The data show increasing trends in the annual primary production and mean chlorophyll a contents. A mean increase in the annual primary production within the recent years is estimated at 1-2% per year.