Available phosphorus in lake sediments in The Netherlands

Klapwijk, S. P.; Kroon, J. M. W.; Meijer, M -L.

doi:10.1007/bf02391963

Cited by 5 publications

(4 citation statements)

References 7 publications

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“…This grouping is also evident in the relationship between phosphorus fractions and other sediment characteristics. Williams et al, 1976;Bostrom et al, 1982;Klapwijk et al, 1982;Golterman et al, 1983). Conversely PWP and EP showed little correlation with particle size distribution in the sediments, the only significant correlation being negative between EP and clay.…”

Section: Physical and Chemical Characteristicsmentioning

confidence: 99%

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The phosphorus status of sediments in a hypertrophic impoundment (Hartbeespoort Dam): implications for eutrophication management

Twinch

1986

Hydrobiologia

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The phosphorus status and distribution of sediments in a hypertrophic water supply reservoir (Hartbeespoort Dam) were investigated, with a view to assessing the role of sediments in counteracting the effects of reduced external phosphorus loading as a restoration measure. In comparison with similar water bodies in South Africa, the sediments in Hartbeespoort Dam contained high levels of both total and potentially mobile phosphorus. The potentially mobile fraction constituted about 60% of the total phosphorus content of the sediments, compared with about 11% in other reservoirs. The excessive eutrophication of Hartbeespoort Dam is clearly reflected in the phosphorus status of the sediments. Sediment distribution in the impoundment was found to be extremely heterogeneous, due to the combined influences of morphometry, hydrology and an imbalance in the nutrient loads entering via rivers at remote points in the water body. It is concluded t h k sufficient mobile phosphorus has accumulated in the sediments to prolong the response time of the impoundment to phosphorus load reductions. Since phosphorus release from sediments is dependent on dynamic processes not addressed in this study, the extent of the delays in trophic response to load reduction cannot be estimated.

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Section: Physical and Chemical Characteristicsmentioning

confidence: 99%

“…On average the proportion of sediment TP that is potentially mobile (i.e. Bostrom et al, 1982;Klapwijk et al, 1982;Williams, 1980;Golterman et al, 1983). This observation is in agreement with Williams et al (1980) who showed that percentage bioavailability of sediment TP generally increased with TP concentration.…”

Section: Phosphorus Status Of Sedimentsmentioning

confidence: 99%

The phosphorus status of sediments in a hypertrophic impoundment (Hartbeespoort Dam): implications for eutrophication management

Twinch

1986

Hydrobiologia

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“…Various restoration measures have been proposed by both scientists and water managers to combat these changes and return these lakes to their 'natural' situation which occurred prior to these eutrophication events. Great efforts have been made ever since, largely by reducing external input of nutrients by either closing off nutrient rich input sources or by pre-treating the nutrient rich water before it enters the lakes (Klapwijk et al 1982;Jeppesen et al 1991;Van Liere and Janse 1992). Yet a full recovery has not been reached in many cases, as restoration measures are often hindered by insufficient reduction of external loading or by internal loading of nutrients that have been building up in the lake sediment during the decades of eutrophication (Cooke et al 1993;Søndergaard et al 2003;Smolders et al 2006).…”

Section: Introductionmentioning

confidence: 99%

“…Of these compounds, iron is a compound that can be naturally found in high quantities in lake sediments, but due to changes in water regimes such as damming and excess use of groundwater for agriculture, the input of iron-rich groundwater has decreased in many areas and consequently lake sediments have become iron depleted (Van der Welle et al 2007b;Lamers et al 2015). The addition of iron has frequently been used in the past for pretreatment of P-rich inlet water (Klapwijk et al 1982;Bootsma et al 1999), but it has also successfully been used in both mesocosm experiments and field applications to combat internal P loading by either adding the iron to the lake sediment (Quaak et al 1993;Boers et al 1994;Smolders et al 2001) or to the surface water (Jaeger 1994;Burley et al 2001;Deppe and Benndorf 2002;Hansen et al 2003;Kleeberg et al 2012). Although the effects of this restoration measure on the chemical composition of lakes are well documented, the effects on different parts of the food web are often not reported.…”

Section: Introductionmentioning

confidence: 99%

Lake restoration by in-lake iron addition: a synopsis of iron impact on aquatic organisms and shallow lake ecosystems

2015

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Internal phosphorus loading has become a major problem in many shallow freshwater lakes over the past decades due to the build-up of phosphorus stocks in the sediment. Iron is a natural capping agent which can enhance sediment P binding capacity, thus reducing P availability and shifting a lake from an algal to a macrophyte dominated state. Iron could, however, also impose toxic effects on the biota. We therefore provide a synopsis of iron toxicity studies and lake restoration measures using iron addition. Iron toxicity studies revealed that, even though iron is an essential nutrient for growth, when added in excess, it can negatively affect aquatic organisms. We found 13 studies testing the effect of iron addition as a restoration measure in the field (10) or using sediment from lakes and reservoirs in the laboratory (3). Twelve of the studies reported increased P retention after iron addition, which depended on the iron salts used and the concentrations added in two studies, whereas one study found no effect on P retention. Eight out of the nine field studies that reported biotic responses found reduced chlorophyll concentrations in the water column, whereas toxic effects of iron on organisms remained absent. Iron addition was most successful when external P loading, and concentrations of organic matter and sulphate were low as well as densities of sediment disturbing fish and crayfish. We conclude that iron addition can be a successful restoration method when these conditions are met.

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Available Phosphorus in the Sediments of Eight Lakes in the Netherlands

Klapwijk¹,

Brüning²

1986

Sediments and Water Interactions

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Available phosphorus in lake sediments in The Netherlands

Cited by 5 publications

References 7 publications

The phosphorus status of sediments in a hypertrophic impoundment (Hartbeespoort Dam): implications for eutrophication management

The phosphorus status of sediments in a hypertrophic impoundment (Hartbeespoort Dam): implications for eutrophication management

Lake restoration by in-lake iron addition: a synopsis of iron impact on aquatic organisms and shallow lake ecosystems

Available Phosphorus in the Sediments of Eight Lakes in the Netherlands

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