<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>The offshore macrozoobenthos and selected environmental parameters were studied in a small artificial reservoir, created through sand and gravel extraction. The results are rather surprising. Despite the shallow depth and good wind exposure of the reservoir, a thermal and oxygen stratification developed in the summer, causing hypoxic conditions near the bottom, even though the organic matter content in the sediments was &lt;5%. Furthermore, despite the high fish abundance, chaoborids prevailed in zoobenthos, while <italic>Tanytarsus</italic> sp. and <italic>Chironomus</italic> sp. co-dominated among chironomids. This study attempts to explain the observed phenomena, though the presented hypotheses still need further confirmation.</p>
</abstract>

The offshore macrozoobenthos and selected environmental parameters were studied in a small artificial reservoir, created through sand and gravel extraction. The results are rather surprising. Despite the shallow depth and good wind exposure of the reservoir, a thermal and oxygen stratification developed in the summer, causing hypoxic conditions near the bottom, even though the organic matter content in the sediments was <5%. Furthermore, despite the high fish abundance, chaoborids prevailed in zoobenthos, while Tanytarsus sp. and Chironomus sp. co-dominated among chironomids. This study attempts to explain the observed phenomena, though the presented hypotheses still need further confirmation.

Peculiarities of macrozoobenthos in the offshore zone of a small artificial post-gravel pit reservoir

Oceanological and Hydrobiological Studies

The offshore macrozoobenthos and selected environmental parameters were studied in a small artificial reservoir, created through sand and gravel extraction....

Peculiarities of macrozoobenthos in the offshore zone of a small artificial post-gravel pit reservoir

Publié en ligne: 08 avr. 2010

Pages: 39 - 59

DOI: https://doi.org/10.2478/v10009-010-0007-7

Mots clés
artificial reservoir, macrozoobenthos, offshore zone, environmental variables

This content is open access.

Peculiarities of macrozoobenthos in the offshore zone of a small artificial post-gravel pit reservoir

Publié en ligne: 08 avr. 2010

Pages: 39 - 59

DOI: https://doi.org/10.2478/v10009-010-0007-7

Mots clésartificial reservoir, macrozoobenthos, offshore zone, environmental variables

This content is open access.

Mots clés
artificial reservoir, macrozoobenthos, offshore zone, environmental variables