Long Term Effect of Cyprinid Fishes on Phytoplankton and Zooplankton Communities in a Shallow Water Protection Reservoir

The effects of fish kill and different fish stocks on the phytoplankton and zooplankton dynamics were studied in a shallow hypertrophic reservoir system. When fish stock was below 100 kg ha−1, nutrient availability was not the main limiting factor for growth of phytoplankton. Consequently top‐down f...

Full description

Saved in:
Bibliographic Details
Published in:International review of hydrobiology. 2004-01, Vol.89 (1), p.68-78
Main Authors: Mátyás, Kálmán, Korponai, János, Tátrai, István, Paulovits, Gábor
Format: Article
Language:English
Subjects:
Animal and plant ecology
Animal, plant and microbial ecology
Biological and medical sciences
cyprinid fish
Cyprinidae
Fresh water ecosystems
Fundamental and applied biological sciences. Psychology
phytoplankton
Synecology
water quality
zooplankton
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The effects of fish kill and different fish stocks on the phytoplankton and zooplankton dynamics were studied in a shallow hypertrophic reservoir system. When fish stock was below 100 kg ha−1, nutrient availability was not the main limiting factor for growth of phytoplankton. Consequently top‐down forces controlled phytoplankton. In the years with high fish stock (>100 kg ha−1) the bottom‐up forces dominated as nutrient availability was the main limiting factor for growth of phytoplankton. We can conclude that significant water quality improvement can be achieved in the reservoir system by decreasing fish stock below 100 kg ha−1. Although clear‐water phase could be stabilised temporary by macrophytes, stabilisation of good water quality requires continuous regulation of fish community. (© 2004 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
ISSN:1434-2944
1522-2632
DOI:10.1002/iroh.200310683