Measurement techniques for quantification of pumping activity of invertebrates in small burrows

Roskosch, Andrea; Hupfer, Michael; Nützmann, Gunnar; Lewandowski, Jörg

doi:10.1127/1863-9135/2011/0178-0089

Cited by 15 publications

(20 citation statements)

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“…. Before chironomids for the experiments were handled as described in4, larvae were kept in sediment at 4 °C and acclimatized to microcosm conditions for five days prior to transfer into microcosms. Prior to randomly distributing animals across microcosms they were sorted to the same larval stage (4 th stage, size 19–25 mm).…”

Section: Methodsmentioning

confidence: 99%

“…In particular bioturbation associated ventilation of animal burrows has previously been found to have significant impact on sediment respiration245. Burrow ventilation involves the rapid exchange of water between the overlying water column and subsurface sediments and is caused by animals flushing their open or blind-ended burrows with overlying water for respiration and feeding purposes6.…”

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confidence: 99%

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

Baranov

Lewandowski

Romeijn

et al. 2016

Sci Rep

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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.

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Section: Methodsmentioning

confidence: 99%

mentioning

confidence: 99%

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

Baranov

Lewandowski

Romeijn

et al. 2016

Sci Rep

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“…Pumping periods are regularly interrupted by non-pumping periods. During non-pumping periods, chironomids such as C. plumosus larvae spin conical nets of mucus in their burrows (Roskosch et al 2011). After a period of pumping, the nets with all entrapped particles are eaten.…”

Section: Filtration and Food Competition Between Pelagic Zooplankton mentioning

confidence: 99%

“…In addition, the intermittent nature of burrow ventilation affects the temporal distribution of oxygen and redox conditions in sediments surrounding the burrows (Polerecky et al 2006, Roskosch et al 2011, Volkenborn et al 2012). This temporal oscillation in redox can greatly increase the metabolic rates of tube-associated sediment bacteria and stimulate organic matter degradation (Aller 1994).…”

Section: Geochemistrymentioning

confidence: 99%

“…Interestingly, given a water flow rate of 60 mL/h (flow velocity 15 mm/s, tube diameter 1.5-2.0 mm, tube depth up to 20 cm), individual Chironomus plumosus larvae pump approximately 10 times more water through their burrows than required to meet their oxygen demands (Roskosch et al 2010b(Roskosch et al , 2011. Reasons for such high pumping rates are high oxygen consumption by the microbial community of the burrow walls, which reduces oxygen availability to the larvae (Polerecky et al 2006) and high filterfeeding rates of the larvae, which feed predominantly on particulate matter delivered into the burrow by the water current ( Fig.…”

Section: Geochemistrymentioning

confidence: 99%

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Tube‐dwelling invertebrates: tiny ecosystem engineers have large effects in lake ecosystems

Hölker

Vanni

Kuiper

et al. 2015

Ecological Monographs

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136

118

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Abstract. There is ample evidence that tube-dwelling invertebrates such as chironomids significantly alter multiple important ecosystem functions, particularly in shallow lakes. Chironomids pump large water volumes, and associated suspended and dissolved substances, through the sediment and thereby compete with pelagic filter feeders for particulate organic matter. This can exert a high grazing pressure on phytoplankton, microorganisms, and perhaps small zooplankton and thus strengthen benthic-pelagic coupling. Furthermore, intermittent pumping by tube-dwelling invertebrates oxygenates sediments and creates a dynamic, three-dimensional mosaic of redox conditions. This shapes microbial community composition and spatial distribution, and alters microbe-mediated biogeochemical functions, which often depend on redox potential. As a result, extended hotspots of element cycling occur at the oxic-anoxic interfaces, controlling the fate of organic matter and nutrients as well as fluxes of nutrients between sediments and water. Surprisingly, the mechanisms and magnitude of interactions mediated by these organisms are still poorly understood. To provide a synthesis of the importance of tube-dwelling invertebrates, we review existing research and integrate previously disregarded functional traits into an ecosystem model. Based on existing research and our models, we conclude that tube-dwelling invertebrates play a central role in controlling water column nutrient pools, and hence water quality and trophic state. Furthermore, these tiny ecosystem engineers can influence the thresholds that determine shifts between alternate clear and turbid states of shallow lakes. The large effects stand in contrast to the conventional limnological paradigm emphasizing predominantly pelagic food webs. Given the vast number of shallow lakes worldwide, benthic invertebrates are likely to be relevant drivers of biogeochemical processes at regional and global scales, thereby mediating feedback mechanisms linked to climate change.

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Biological Activity as a Trigger of Enhanced Ecohydrological Interface Activity

Klaus,

Baranov,

Lewandowski

et al. 2024

Ecohydrological Interfaces

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Measurement techniques for quantification of pumping activity of invertebrates in small burrows

Cited by 15 publications

References 0 publications

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

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

Tube‐dwelling invertebrates: tiny ecosystem engineers have large effects in lake ecosystems

Biological Activity as a Trigger of Enhanced Ecohydrological Interface Activity

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