Effects of bioirrigation of non-biting midges (Diptera: Chironomidae) on lake sediment respiration

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Effects of bioirrigation of non-biting midges (Diptera: Chironomidae) on lake sediment respiration. / Baranov, Viktor; Lewandowski, Jörg; Romeijn, Paul; Singer, Gabriel; Krause, Stefan.

In: Scientific Reports, Vol. 6, 27329, 03.06.2016.

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@article{0f8057aa89054a769af8ea34d165c0ae,
title = "Effects of bioirrigation of non-biting midges (Diptera: Chironomidae) on lake sediment respiration",
abstract = "Bioirrigation or the transport of fluids into the sediment matrix due to the activities of organisms such as bloodworms (larvae of Diptera, Chironomidae), has substantial impacts on sediment respiration in lakes. However, previous quantifications of bioirrigation impacts of Chironomidae have been limited by technical challenges such as the difficulty to separate faunal and bacterial respiration. This paper describes a novel method based on the bioreactive tracer resazurin for measuring respiration in-situ in non-sealed systems with constant oxygen supply. Applying this new method in microcosm experiments revealed that bioirrigation enhanced sediment respiration by up to 2.5 times. The new method is yielding lower oxygen consumption than previously reported, as it is only sensitive to aerobic heterotrophous respiration and not to other processes causing oxygen decrease. Hence it decouples the quantification of respiration of animals and inorganic oxygen consumption from microbe respiration in sediment.",
keywords = "Entomology, Element cycles, Freshwater ecology",
author = "Viktor Baranov and J{\"o}rg Lewandowski and Paul Romeijn and Gabriel Singer and Stefan Krause",
year = "2016",
month = jun,
day = "3",
doi = "10.1038/srep27329",
language = "English",
volume = "6",
journal = "Scientific Reports",
issn = "2045-2322",
publisher = "Nature Publishing Group",

}

RIS

TY - JOUR

T1 - Effects of bioirrigation of non-biting midges (Diptera: Chironomidae) on lake sediment respiration

AU - Baranov, Viktor

AU - Lewandowski, Jörg

AU - Romeijn, Paul

AU - Singer, Gabriel

AU - Krause, Stefan

PY - 2016/6/3

Y1 - 2016/6/3

N2 - Bioirrigation or the transport of fluids into the sediment matrix due to the activities of organisms such as bloodworms (larvae of Diptera, Chironomidae), has substantial impacts on sediment respiration in lakes. However, previous quantifications of bioirrigation impacts of Chironomidae have been limited by technical challenges such as the difficulty to separate faunal and bacterial respiration. This paper describes a novel method based on the bioreactive tracer resazurin for measuring respiration in-situ in non-sealed systems with constant oxygen supply. Applying this new method in microcosm experiments revealed that bioirrigation enhanced sediment respiration by up to 2.5 times. The new method is yielding lower oxygen consumption than previously reported, as it is only sensitive to aerobic heterotrophous respiration and not to other processes causing oxygen decrease. Hence it decouples the quantification of respiration of animals and inorganic oxygen consumption from microbe respiration in sediment.

AB - Bioirrigation or the transport of fluids into the sediment matrix due to the activities of organisms such as bloodworms (larvae of Diptera, Chironomidae), has substantial impacts on sediment respiration in lakes. However, previous quantifications of bioirrigation impacts of Chironomidae have been limited by technical challenges such as the difficulty to separate faunal and bacterial respiration. This paper describes a novel method based on the bioreactive tracer resazurin for measuring respiration in-situ in non-sealed systems with constant oxygen supply. Applying this new method in microcosm experiments revealed that bioirrigation enhanced sediment respiration by up to 2.5 times. The new method is yielding lower oxygen consumption than previously reported, as it is only sensitive to aerobic heterotrophous respiration and not to other processes causing oxygen decrease. Hence it decouples the quantification of respiration of animals and inorganic oxygen consumption from microbe respiration in sediment.

KW - Entomology

KW - Element cycles

KW - Freshwater ecology

U2 - 10.1038/srep27329

DO - 10.1038/srep27329

M3 - Article

VL - 6

JO - Scientific Reports

JF - Scientific Reports

SN - 2045-2322

M1 - 27329

ER -