The quality of sediment in shallow water bodies – Long-term screening of sediment in Czech Republic. A new perspective of nutrients and organic matter recycling in agricultural landscapes

Baxa, Marek; Šulcová, Jana; Kröpfelová, Lenka; Pokorný, Jan; Potužák, Jan

doi:10.1016/j.ecoleng.2018.11.009

Cited by 9 publications

(6 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…West Sedgemoor had the highest single observed TP sediment concentration, of all the compared sites TP ranges, and the second highest low-end concentration. Even compared to other man-made managed aquatic ecosystems, West Sedgemoor can be considered to have exceedingly high TP concentrations; a study of fishponds in the Czech Republic observed an average sediment TP concentration of 1113.2 mg kg -1 , across 28 sites, with a highest concentration of 3020 mg kg -1 (Baxa et al, 2019). Although the analytical method of this study differs from that of the other literature data, previous studies have shown that the methods are equivalent (Blake et al, 2013;Matsunami et al, 2010).…”

Section: Spatial Phosphorus Distribution In Sedimentmentioning

confidence: 99%

Spatial distribution of sediment phosphorus in a Ramsar wetland

Crocker

Blake

Hutchinson

et al. 2021

Science of The Total Environment

View full text Add to dashboard Cite

Section: Spatial Phosphorus Distribution In Sedimentmentioning

confidence: 99%

Spatial distribution of sediment phosphorus in a Ramsar wetland

Crocker

Blake

Hutchinson

et al. 2021

Science of The Total Environment

View full text Add to dashboard Cite

“…Various hazardous or toxic substances can be present in the sediment due to anthropogenic interventions in the landscape, including toxic metals, organic pollutants, pharmaceuticals, etc. The volume of sediment in Czech ponds is estimated to be 200 million m 3 across 24,000 fishponds [9]. Baxa et al [9] presented a study wherein 200 samples of sediment from Czech fishponds were analyzed for their toxic metal content, and the concentrations of toxic metals found in these sediment samples were higher than the concentrations found in local animals, plants, and water.…”

Section: Introductionmentioning

confidence: 99%

“…The volume of sediment in Czech ponds is estimated to be 200 million m 3 across 24,000 fishponds [9]. Baxa et al [9] presented a study wherein 200 samples of sediment from Czech fishponds were analyzed for their toxic metal content, and the concentrations of toxic metals found in these sediment samples were higher than the concentrations found in local animals, plants, and water.…”

Section: Introductionmentioning

confidence: 99%

Using WaTEM/SEDEM to Model the Effects of Crop Rotation and Changes in Land Use on Sediment Transport in the Vrchlice Watershed

et al. 2022

View full text Add to dashboard Cite

The Czech landscape has undergone various changes over the last 100 years and has been mainly adapted agriculturally for economic purposes. This has resulted, among other things, in reservoirs being clogged with sediment. The Vrchlice Reservoir was built in 1970 to supply drinking water for around 50,000 inhabitants, and increased sedimentation has been detected in the reservoir in recent years. Water erosion and sediment transport were modeled with WaTEM/SEDEM. Sediment volumes were measured in eight ponds across the watershed for calibration purposes. Modeled results from ponds in watersheds covered mostly with arable lands generally corresponded with the measured values. Although in forested watersheds, the measured sediment volumes greatly exceeded modeled sediment yields, indicating high uncertainty in using USLE-based models in non-agricultural watersheds. The modeled scenarios represented pre-Communist, Communist, and post-Communist eras. For these periods WaTEM/SEDEM was used to evaluate three isolated effects: the effects of various crops on arable lands, the effects of farmland fragmentation, and finally the effects of changes in land use. The change in crops proved to be an important factor causing high siltation rate (potential 23% reduction in sediment yield for historical periods), and land fragmentation played the second important role (potential 15% reduction in sediment yield can be reached by land fragmentation). Across all scenarios, the lowest sediment yield and reservoirs siltation rates were obtained from the pre-Communist and Communist crop share under current land use conditions, and current land use with farmland fragmentation implemented, as it was re-constructed for the pre-Communist era. This supports the idea that the introduction of green areas within arable lands are beneficial to the landscape and can help reduce soil erosion and reservoir siltation.

show abstract

“…Although European shponds resemble natural shallow lakes in many aspects, their ecological functioning is largely determined by the purposeful rearing of sh, mainly cyprinids (Kestemont 1995, Pechar 2000, Schlumberger and Girard 2013. The intensity of sh production is promoted by manuring, liming and sh feeding, which in turn increase nutrient availability in the water column and promote accumulation of nutrient rich organic sediments on the bottom (Baxa et al 2019). Large sh stocks control the food chains in the water column and at the bottom by feeding on large zooplankton and benthos.…”

Section: Introductionmentioning

confidence: 99%

Disentangling causes of the dieback of littoral stands in an overloaded water-bird reserve: roles of eutrophication, fish and geese

Svidenský

Kučerová

Čı́žková

2021

Preprint

View full text Add to dashboard Cite

European fishponds used for semi-intensive fish production can serve for refuges of water birds if the fish stocks are limited but the effects of other ecological factors on the ecosystem stability are seldom considered. The aim of this study is to elucidate causes of a marked decline of littoral stands dominated with Typha angustifolia in a hypertrophic fishpond forming a part of a valuable water-bird reserve. Field investigation and two experiments were conducted in order to separate the effects of mineral nutrient availability, redox condition, fish and geese. The physico-chemical characteristics of water and sediments confirmed hypertrophic conditions in the fishpond but a follow-up mesocosm experiment did not prove a negative effect of the sediment quality on the plant growth. On the other hand, a field enclosure experiment showed a significant negative effect on shoot density, which was attributed to grazing by geese. An additional damage to plant belowground parts was ascribed to large carp individuals, albeit in small numbers. The study points to a conservation dilemma caused by large numbers of geese destroying littoral stands in a fishpond nature reserve, which then looses its nesting function for other water-bird species.

show abstract

The quality of sediment in shallow water bodies – Long-term screening of sediment in Czech Republic. A new perspective of nutrients and organic matter recycling in agricultural landscapes

Cited by 9 publications

References 27 publications

Spatial distribution of sediment phosphorus in a Ramsar wetland

Spatial distribution of sediment phosphorus in a Ramsar wetland

Using WaTEM/SEDEM to Model the Effects of Crop Rotation and Changes in Land Use on Sediment Transport in the Vrchlice Watershed

Disentangling causes of the dieback of littoral stands in an overloaded water-bird reserve: roles of eutrophication, fish and geese

Contact Info

Product

Resources

About