Influence of hydrological situations on benthic organisms in a small river in Saxony (Germany)

Title:

Influence of hydrological situations on benthic organisms in a small river in Saxony (Germany)

Creator:

Kändler, Matthias and Seidler, Christina

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:7f7821b8-3a8b-4f43-8d60-bc4f62234d2b
uuid:7f7821b8-3a8b-4f43-8d60-bc4f62234d2b
doi:10.2478/johh-2013-0024

Subject:

macrozoobenthos, drift, discharge, and flow velocity

Type:

model:article and TEXT

Format:

bez média and svazek

Description:

This research was focused on the relationship between river discharge and organism drift. It was carried out for three years in a small heavily modified river in Saxony (Germany). The amount and species composition of drifting invertebrates were observed, depending on discharge and flow velocity. A station was installed where the flow velocity was continually measured and drifting organisms were caught with nets. An inventory of the aquatic community (benthic invertebrates) was taken to determine the species living in the river at the research station. The highest drift density measured was 578 organisms per m3 at a flow velocity of 0.90 m s-1 , the mainly drifting organisms were Chironomidae. Different organisms groups started drifting at different flow velocities. Heavy impacts, such as dredging the river and flood waves, affected the aquatic ecosystems and severely changed the aquatic community regarding the number and the diversity. Some of the aquatic invertebrates such as the Anthothecata completely disappeared after dredging. It was found that many different terrestrial organisms were part of the drift. The typical family of soil biota Collembola represented the largest share.

Language:

Slovak

Rights:

http://creativecommons.org/licenses/by-nc-sa/4.0/
policy:public

Coverage:

188-194

Source:

Journal of hydrology and hydromechanics | 2013 Volume:61 | Number:3

Harvested from:

CDK

Metadata only:

false