Publication details
Seasonal dynamics of Bythonomus lemani and Bothrioneurum vejdovskyanum (Oligochaeta, Annelida) in relation to environmental variables
| Authors | |
|---|---|
| Year of publication | 2006 |
| Type | Article in Periodical |
| Magazine / Source | Biologia |
| MU Faculty or unit | |
| Citation | |
| Field | Ecology |
| Keywords | Bythonomus lemani; Bothrioneurum vejdovskaynum; aquatic Oligochaeta; seasonal dynamics; time series |
| Description | The seasonal dynamics of Bythonomus lemani (Lumbriculidae) were studied for the first time and the knowledge of Bothrioneurum vejdovskyanum (Tubificidae) was extended in the Rokytná River (Czech Republic) during April 1999 – April 2001. The influence of water temperature, velocity, depth, discharge, pH, conductivity, dissolved oxygen amount and biochemical oxygen demand (BOD) on their life cycles was evaluated. Habitat preferences of the juvenile and adult stages were recorded. Time series analysis was used to determine the worm densities, seasonality and trends. For Byth. lemani one distinct reproduction cycle per year was found and this was regulated by temperature, while Both. vejdovskyanum showed a one-year cycle not significantly dependent on measured environmental variables. Byth. lemani showed a significant negative correlation between the trend of its density and BOD concentration. |
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