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Eutrophication: Introduction to the process and some ecological implications

Eutrophication: Introduction to the process and some ecological implications EUTROPHICATION: INTRODUCTION TO THE PROCESS AND SOME ECOLOGICAL IMPLICATIONS J. RINGELBERG (Department of Aquatic Ecology, University of Amsterdam, Kruislaan 320, Amsterdam, The Netherlands) Eutrophication is a process of increasing primary production in the aquatic environment caused by an increased allochthonous input of inorganic nutrients. As long as this input is present eutrophication continues until other factors such as irradiation become limiting. The process of eutrophication is a gradual one, its velocity depending a.o. on the velocity of the nutrient input. At a particular time an aquatic system has a certain trophic level which can be described by relevant state variables such as the amount of primary production or, less adequate because a derivative, the amount of phytomass. During eutrophication a continuous series of transient trophic levels are present. Therefore, the different levels pictured in Fig. 2 are connected by transients. As a ~tarting point the oligotrophic situation (Fig. 2A) can be chosen. It does not mean oligotrophy is the "natural" status of a lake. If we exclude man from being natural, natural allochthonous nutrient inputs (thus not caused by man) occur which lead to certain levels of eutrophication. From the point of view of water management it is better http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Aquatic Ecology Springer Journals

Eutrophication: Introduction to the process and some ecological implications

Aquatic Ecology , Volume 14 (2) – Nov 8, 2005

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References (3)

Publisher
Springer Journals
Copyright
Copyright
Subject
Life Sciences; Freshwater & Marine Ecology; Ecosystems
ISSN
1386-2588
eISSN
1573-5125
DOI
10.1007/BF02260270
Publisher site
See Article on Publisher Site

Abstract

EUTROPHICATION: INTRODUCTION TO THE PROCESS AND SOME ECOLOGICAL IMPLICATIONS J. RINGELBERG (Department of Aquatic Ecology, University of Amsterdam, Kruislaan 320, Amsterdam, The Netherlands) Eutrophication is a process of increasing primary production in the aquatic environment caused by an increased allochthonous input of inorganic nutrients. As long as this input is present eutrophication continues until other factors such as irradiation become limiting. The process of eutrophication is a gradual one, its velocity depending a.o. on the velocity of the nutrient input. At a particular time an aquatic system has a certain trophic level which can be described by relevant state variables such as the amount of primary production or, less adequate because a derivative, the amount of phytomass. During eutrophication a continuous series of transient trophic levels are present. Therefore, the different levels pictured in Fig. 2 are connected by transients. As a ~tarting point the oligotrophic situation (Fig. 2A) can be chosen. It does not mean oligotrophy is the "natural" status of a lake. If we exclude man from being natural, natural allochthonous nutrient inputs (thus not caused by man) occur which lead to certain levels of eutrophication. From the point of view of water management it is better

Journal

Aquatic EcologySpringer Journals

Published: Nov 8, 2005

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