Identification of transport processes in bioirrigated muddy sediments by [18F]fluoride PET (Positron Emission Tomography).
In aquatic environments transport processes across the sediment-water interface are intensified by bioirrigating macrozoobenthos. Transport processes caused by Chironomus plumosus larvae dwelling in U-tubes were investigated by dynamic small animal Positron Emission Tomography (PET) with [18F]fluoride. Significant tracer transport from the burrows into the sediment was detected; penetration was deeper at the outlet branch of the burrow than at the inlet branch. Hence, advection plays a significant role in exchange between water in the burrows and muddy sediment.
Roskosch
Andrea
A
Department of Ecohydrology, Leibniz-Institute of Freshwater Ecology and Inland Fisheries, Müggelseedamm 310, 12587 Berlin, Germany. roskosch@igb-berlin.de
Lewandowski
Jörg
J
Bergmann
Ralf
R
Wilke
Florian
F
Brenner
Winfried
W
Buchert
Ralph
R
D000818:Animals; D002683:Chironomidae / Q000502:physiology*; D017753:Ecosystem; D005459:Fluorides; D008386:Marine Biology / Q000379:methods; D049268:Positron-Emission Tomography / Q000379:methods; D019275:Radiopharmaceuticals
D019275:Radiopharmaceuticals; D005459:Fluorides