Impact of different benthic animals on phosphorus dynamics across the sediment-water interface

Zhang, Lei; Gu, Xiaohong; Fan, Chengxin; Shang, Jingge; Shen, Qiushi; Wang, Zhaode; Shen, Ji

doi:10.1016/s1001-0742(09)60305-3

Cited by 60 publications

(36 citation statements)

References 31 publications

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“…This district is eutrophic, and the oxygen penetration depth in the sediment is only several millimeters (Zhang et al, 2010). A sediment core was sampled with overlying water using a gravity core sampler (11 cm internal diameter, 50 cm long; Rigo, Saitama, Japan).…”

Section: Field Samplingmentioning

confidence: 99%

Effects of pretreatment on the sequential phosphorus fractionation of anaerobic sediment

et al. 2014

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Phosphorus (P) fractionation is critical to understand P cycling in sediment and across the sediment-water interface. To examine the effect of pretreatment on the P fractionation of anaerobic sediment, anaerobic sediment samples were treated by oven-drying, airdrying, and freeze-drying, and a fresh sediment sample was used as a control treatment. A five-step sequential extraction procedure was applied, and six P fractions were examined. The results indicated that P NaCl (P extracted by NaCl), P BD (P extracted by Na 2 S 2 O 4 and NaHCO 3 ), P NaOH (P extracted by NaOH), and organic P were significantly influenced by pretreatment, whereas P HCl (P extracted by HCl) and residual P were not significantly affected by pretreatment. Compared to fresh sediment, drying treatments decreased P NaCl , P NaOH , and organic P but increased P BD . Among the three drying methods, oven-drying resulted in the greatest change in P fractionation; the effects of air-drying and freeze-drying were similar to each other. The total extracted P were similar among the four pretreatment methods. For the measurement of accurate P fractions, fresh sediment is the best option.

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Section: Field Samplingmentioning

confidence: 99%

Effects of pretreatment on the sequential phosphorus fractionation of anaerobic sediment

et al. 2014

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“…Sediment resuspension is an important process for oxygen and nutrient dynamics in aquatic ecosystems (Schallenberg and Burns, 2004;You et al, 2007b;Tammeorg et al, 2013). Tubificid worms and other benthic animals also significantly influence the oxygen and nutrient dynamics in the water, sediment and across the sediment-water interface (Lewandowski and Hupfer, 2005;Mermillod-Blondin et al, 2005;Zhang et al, 2010). For the importance of oxygen, nitrogen and phosphorus in global element cycling and eutrophication, the influence of the interactions between resuspension and benthic animals on oxygen and nutrient dynamics should be investigated in future studies.…”

Section: Discussionmentioning

confidence: 99%

“…Tubificids are conveyor-belt feeders that ingest particles in deep sediments and egest them on the sediment surface in the form of pseudofeces (Kaster et al, 1984;Dafoe et al, 2011). The activities of these worms alter sediment stratification (Matisoff et al, 1999;Nogaro et al, 2007;Dafoe et al, 2011), increase sediment water content and porosity (Fukuhara, 1987;Zhang, 2010), change the distribution of the sediment particle size (Ciutat et al, 2006;Zhang, 2010;Dafoe et al, 2011) and alter the oxygen and nutrient dynamics in the sediment and across the sediment-water interface (Matisoff et al, 1985;Mermillod-Blondin et al, 2005;Zhang et al, 2010). Thus, we hypothesized that tubificids may influence the process of sediment resuspension.…”

Section: Introductionmentioning

confidence: 99%

The role of tubificid worms (Limnodrilus hoffmeisteri) in sediment resuspension: a microcosm study

Zhang

Shang

et al. 2014

Ann. Limnol. - Int. J. Lim.

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-Sediment resuspension is an important internal lake process in regulating nutrient cycling and ecosystem structure. Tubificid worms are widely and abundantly distributed in freshwater ecosystems and are able to alter the sediment characteristics. This study was conducted to verify the hypothesis that the alteration of sediments by tubificids may substantially influence the sediment resuspension process. Specifically, we investigated the influence of Limnodrilus hoffmeisteri (Tubificidae) on sediment resuspension using an apparatus designed to simulate the sediment resuspension process in Lake Taihu (China). We examined L. hoffmeisteri according to its density (30 000 ind.m x2 ) in Lake Taihu and simulated the light ) wind processes present in Lake Taihu. Tubificids loosened the sediment through their feeding and defecation activities and increased the sediment water content. The appearance of tubificids increased the suspended solids (SS) in a 1.6 m water column under all three wind processes. During the sedimentation process, SS decreased rapidly in both the control and tubificid treatments. The total SS in the water column was significantly increased by tubificids and it changed significantly with time. In addition, the small size particles of the SS in the tubificid treatment were higher than that in the control. So, the appearance of tubificid worms (L. hoffmeisteri) enhanced sediment resuspension and raised the proportion of small size particles in SS.

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“…Bioturbation caused by tubificid worms has been related to decrease phosphorus release from sediments (Andersen and Jensen, 1991;Davies et al, 1975;Lewandowski and Jupfer, 2005;Mortimer et al, 1999;Zhang et al, 2010;Heilskov and Holmer, 2001). Enhanced phosphorus retention by a sediment highly bioturbated is probably due to the effect of redox changing conditions imposed by tubificids.…”

Section: > Nutrient Dynamics Across Water-sediment Interfacementioning

confidence: 99%

“…Bioturbation induces changes on the bio-geo-chemistry at the water-sediment interface (changing even the physical structure of the sediment) via fluid advection, solute diffusion or sediment slumping (Aller, 1994;Navel et al, 2011;. Moreover, benthic organisms may not only enhance bacterial activity (Krantzberg, 1985, and references therein) but also promote the downward transport of oxygen and other electron acceptors Overall, the effect of bioturbation on the bio-geo-chemical processes occurring at the water-sediment interface depends not only upon the physical and chemical characteristics of the sediment (Gerino et al, 2003;Mermillod-Blondin and Rosenberg, 2006;) but also on the type of benthic organism (Matisoff et al, 1985;Zhang et al, 2010). Tubificid worms belong 12p2 to the functional group of upward-conveyors (or conveyor-belt species) (François et al, 2002;Gerino et al, 2003).…”

Section: Introductionmentioning

confidence: 99%

Influence of tubificid worms on nutrient fluxes across water-sediment interface in fish farm settling ponds

Puigagut

Chazarenc

Comeau

2014

Knowl. Managt. Aquatic Ecosyst.

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Impact of different benthic animals on phosphorus dynamics across the sediment-water interface

Cited by 60 publications

References 31 publications

Effects of pretreatment on the sequential phosphorus fractionation of anaerobic sediment

Effects of pretreatment on the sequential phosphorus fractionation of anaerobic sediment

The role of tubificid worms (Limnodrilus hoffmeisteri) in sediment resuspension: a microcosm study

Influence of tubificid worms on nutrient fluxes across water-sediment interface in fish farm settling ponds

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