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Mechanical imitation of bidirectional bioadvection in aquatic sediments

Matsui, Georg und Volkenborn, Nils und Polerecky, Lubos und Henne, Ulrich und Weathy, David und Iovell, Charles und Woodin, Sarah (2011) Mechanical imitation of bidirectional bioadvection in aquatic sediments. Limnology and Oceanography: Methods, 9 (3), Seiten 84-96. American Society of Limnology and Oceanography. DOI: 10:4319/lom.2011.9.84. ISSN 1541-5856.

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Kurzfassung

Measuring the effects of bioirrigating infauna on sediment properties and geochemistry is often problematic due to the unpredictable nature of the animal activity. This can be overcome by the use of mechanical systems that allow mimicking of bioirrigation in a controlled and reproducible manner. A realistic mimic must allow both qualitative and quantitative imitation of the complex infaunal activities, i.e., be able to generate both positive and negative porewater pressure waveforms in a realistic range of amplitudes and frequencies using biologically realistic water volumes. We developed a mechanical irrigation system (Robolug) that meets these criteria and applied it to mimic a set of specific hydraulic behaviours of the common lugworm Arenicola marina. The resultant porewater pressure waveforms had realistic shapes and amplitudes and were realized by pumping biologically realistic volumes of water. The bidirectional bioadvection induced oxygen dynamics at depth and at the sediment water interface comparable to those observed with live lugworms. Additionally, we were able to reproduce the formation of sedimentary cracks, a phenomenon also observed with real lugworms. The Robolug irrigation system is a promising tool for a wide range of biogeochemical and ecological studies, as it allows the exploration of bio hydraulically induced transient geochemical conditions in a controllable and reproducible manner; avoids the uncertainties of animal performance; and permits manipulative experimental conditions that could potentially be harmful for organisms or alter their behaviors.

Dokumentart:Zeitschriftenbeitrag
Zusätzliche Informationen:Manuscript ID: LOM-10-02-0016
Titel:Mechanical imitation of bidirectional bioadvection in aquatic sediments
Autoren:
AutorenInstitution oder E-Mail-Adresse der Autoren
Matsui, GeorgUniversity South Carolina, USA
Volkenborn, NilsUniversity South Carolina, USA
Polerecky, LubosMax Planck Institute for Marine
Henne, Ulrichulrich.henne@dlr.de
Weathy, DavidUniversity South Carolina, USA
Iovell, CharlesUniversity South Carolina, USA
Woodin, SarahUniversity South Carolina, USA
Datum:2011
Erschienen in:Limnology and Oceanography: Methods
Referierte Publikation:Ja
In SCOPUS:Ja
In ISI Web of Science:Ja
Band:9
DOI :10:4319/lom.2011.9.84
Seitenbereich:Seiten 84-96
Verlag:American Society of Limnology and Oceanography
ISSN:1541-5856
Status:veröffentlicht
Stichwörter:Bioadvection, Bioirrigation, Burrow Mimic, Infaunal Hydraulic Activity
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Luftfahrt
HGF - Programmthema:Starrflügler (alt)
DLR - Schwerpunkt:Luftfahrt
DLR - Forschungsgebiet:L AR - Starrflüglerforschung
DLR - Teilgebiet (Projekt, Vorhaben):L - Flugphysik (alt)
Standort: Göttingen
Institute & Einrichtungen:Institut für Aerodynamik und Strömungstechnik > Experimentelle Verfahren
Hinterlegt von: Ilka Micknaus
Hinterlegt am:30 Mai 2011 08:41
Letzte Änderung:26 Mär 2015 11:11

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