Invertebrate drift in the piedmont part of the Kedrovaya River (Primorsky Krai, Russia) in warm season

Astakhov, M. V.

doi:10.1134/s1995082914010039

Cited by 2 publications

(1 citation statement)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…That is why the active drift of most invertebrates occurs in the night time. However, year-round research carried out in the Kedrovaya River showed that, in contrast to the warm season, in conditions of ice cover a large movement of organisms within a water column was observed also in daytime, and the number of daytime drifters exceeded those at night [22,23]. It is likely that in the cold season, with conditions of low feeding activity among fish, the effectiveness of daylight invertebrate drift is no lower than at night, especially for the less visible smallest individuals [17].…”

Section: Discussionmentioning

confidence: 97%

Vertical redistribution of drifting benthic invertebrates in the Kedrovaya River, Primorsky Region of Russia

Astakhov¹,

Богатов²

2014

OJE

View full text Add to dashboard Cite

The vertical distribution of morphologically different drifting invertebrates (mayfly and dipteran larvae) in a small salmon river was studied. Drifting invertebrates were caught with the Astakhov's sampler equipped with three driftnets placed one above another. The average annual drift rate in different levels of a water column was practically the same, while the drift density decreased from the bottom to the surface. Over the course of 24 hours, the drifting organisms did not show clear preference for a particular water layer. Invertebrates were constantly redistributed between the upper and lower levels at approximately 30-90 min intervals. This redistribution appears to be linked to the fact that invertebrates of the same taxa, which entered into water column from different bottom sites become active at different times.

show abstract

Section: Discussionmentioning

confidence: 97%