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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
agricultural and biological sciences
The use of dinoflagellate cysts to separate human-induced from natural variability in the trophic state of the Po River discharge plume over the last two centuries
Marine Pollution Bulletin, Volume 64, No. 1, Year 2012
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Description
To obtain insight into the natural and/or human-induced changes in the trophic state of the distal portion of the Po River discharge plume over the last two centuries, high temporal resolution dinoflagellate cyst records were established at three sites. Cyst production rates appear to reflect the natural variability in the river's discharge, whereas cyst associations reflect the trophic state of the upper waters, which in turn can be related to agricultural development. The increased abundances of Lingulodinium machaerophorum and Stelladinium stellatum found as early as 1890 and 1920 correspond to the beginning of the industrial revolution in Italy and the first chemical production and dispersion of ammonia throughout Europe. After 1955, the increased abundances of these species and of Polykrikos schwartzii, Brigantedinium spp. and Pentapharsodinium dalei correspond to agriculturally induced alterations of the hypertrophic conditions. A slight improvement in water quality can be observed from 1987 onward. © 2011 Elsevier Ltd.
Authors & Co-Authors
Zonneveld, Karin A.F.
Germany, Bremen
Universität Bremen
Chen, Liang
Germany, Bremen
Universität Bremen
Elshanawany, Rehab
Germany, Bremen
Universität Bremen
Egypt, Alexandria
Faculty of Science
Fischer, Helmut W.
Germany, Bremen
Universität Bremen
Hoins, Mirja
Germany, Bremen
Universität Bremen
Ibrahim, Mohamed I.A.
Egypt, Alexandria
Faculty of Science
Pittauerova, Daniela
Germany, Bremen
Universität Bremen
Versteegh, Gerard J.M.
Germany, Bremen
Universität Bremen
Statistics
Citations: 58
Authors: 8
Affiliations: 2
Identifiers
Doi:
10.1016/j.marpolbul.2011.10.012
ISSN:
0025326X
e-ISSN:
18793363
Research Areas
Environmental