Effectiveness of reducing external nutrient load entering a eutrophicated shallow lake ecosystem in the Naardermeer nature reserve, The Netherlands

Bootsma, M.C.; Barendregt, A.; Alphen, J.C.A van

doi:10.1016/s0006-3207(99)00027-0

Cited by 37 publications

(20 citation statements)

References 28 publications

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“…At the same time, larger values of this element were found before reservoir reclamation. Similar trends were observed for certain concentrations of the total phosphorus, the values of which before modernization of the reservoir ranged from 0.64 to 0.67 mg P/dm 3 . Penetration of phosphorus from bottom sediments into the water is a problem that significantly complicates the reclamation treatments in reservoirs, especially small and shallow ones [12].…”

Section: Resultssupporting

confidence: 77%

“…Increased concentrations of chlorophyll "a" were determined in spring, summer and autumn, while its levels were reduced in winter reaching the minimum. The average concentration of chlorophyll "a" in water of Bachmaty reservoir ranged from 3.89 to 4.61 µg/dm 3 during the study before reservoir reclamation, while after modernization -from 2.51 to 2.59 µg/dm 3 .…”

Section: Resultsmentioning

confidence: 93%

“…In this case, sediment becomes an important internal source of phosphorus and maintains the eutrophication process, even after the reduction of external phosphorus sources [12,13]. The average concentration of the biogenic agent determined after cleaning the reservoir is smaller and amounts to 0.13-0.23 mg P/dm 3 . Also in this case, its seasonal occurrence was observed.…”

Section: Resultsmentioning

confidence: 99%

“…The Bachmaty reservoir was built on the 44+795 km of the river Orlanka in 1985 by water damming with earthen dam. The area of the reservoir is 5.5 ha and volume of accumulated water is 75 000 m 3 . Hydrological catchment of the reservoir occupies the area of 22.8 km…”

Section: Methodsmentioning

confidence: 99%

“…The sources of nitrogen and phosphorus as well as other components are primarily the large-scale used organic fertilizers, such as liquid and solid manure and also mineral fertilizers. One of the most dangerous sources biogenic substances supply to the waters is municipal wastewater, both treated and untreated [2,3]. Eutrophication process is stimulated by phosphorus compounds present in municipal wastewater, which are derived from detergents.…”

mentioning

confidence: 99%

See 4 more Smart Citations

Symptoms of Water Eutrophication in the Bachmaty Reservoir

Siemieniuk¹,

Szczykowska²,

Wiater³

2015

J. Ecol. Eng.

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Section: Resultssupporting

confidence: 77%

Section: Resultsmentioning

confidence: 93%

Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

mentioning

confidence: 99%

See 3 more Smart Citations

Symptoms of Water Eutrophication in the Bachmaty Reservoir

Siemieniuk¹,

Szczykowska²,

Wiater³

2015

J. Ecol. Eng.

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Recovery of lakes and coastal marine ecosystems from eutrophication: A global meta‐analysis

McCrackin

Jones

et al. 2016

Limnology & Oceanography

180

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In order to inform policies aimed at reducing nutrient emissions to surface waters, it is essential to understand how aquatic ecosystems respond to eutrophication management. Using data from 89 studies worldwide, we examined responses to the reduction or cessation of anthropogenic nutrient inputs relative to baseline conditions. Baseline conditions were pre-disturbance conditions, undisturbed reference sites, restoration targets, or experimental controls. We estimated recovery completeness (% baseline conditions reached) and recovery rate (annual % change relative to baseline conditions) for plant and animal abundance and diversity and for ecosystem functions. Categories were considered fully recovered if the 95% confidence interval (CI) of recovery completeness overlapped 100% and partially recovered if the CI did not overlap either 100% or zero. Cessation of nutrient inputs did not result in more complete or faster recovery than partial nutrient reductions, due likely to insufficient passage of time, nutrients from other sources, or shifting baselines. Together, lakes and coastal marine areas achieved 34% (616% CI) and 24% (615% CI) of baseline conditions decades after the cessation or partial reduction of nutrients, respectively. One third of individual response variables showed no change or worsened conditions, suggesting that achieving baseline conditions may not be possible in all cases. Implied recovery times after cessation of nutrient inputs varied widely, from < 1 yr to nearly a century, depending on response. Our results suggest that long-term monitoring is needed to better understand recovery timescales and trajectories and that policy measures must consider the potential for slow and partial recovery.

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Seasonal variability in phytoplankton stable carbon isotope ratios and bacterial carbon sources in a shallow Dutch lake

Lammers

Reichart

Middelburg

2017

Limnology & Oceanography

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Ecosystem metabolism of lakes strongly depends on the relative importance of local vs. allochthonous carbon sources and on microbial food-web functioning and structure. Over the year ecosystem metabolism varies as a result of seasonal changes in environmental parameters such as nutrient levels, light, temperature, and variability in the food web. This is reflected in isotopic compositions of phytoplankton and bacteria. Here, we present the results of a 17-month study on carbon dynamics in two basins of Lake Naarden, The Netherlands. One basin was restored after anthropogenic eutrophication, whereas the other basin remained eutrophic. We analyzed natural stable carbon isotope abundances (d 13 C) of dissolved inorganic carbon, dissolved organic carbon and macrophytes, and combined these data with compound-specific d 13 C analyses of phospholipid-derived fatty acids, produced by phytoplankton and bacteria. Isotopic fractionation (e) between phytoplankton biomass and CO 2(aq) was similar for diatoms and other eukaryotic phytoplankton, and differences between sampling sites were small. Highest e values were observed in winter with values of 23.5 6 0.6& for eukaryotic phytoplankton and 13.6 6 0.3& for cyanobacteria. Lowest e values were observed in summer: 10.5 6 0.3& for eukaryotic phytoplankton and 2.7 6 0.1& for cyanobacteria. The annual range in d 13 C bact was between 6.9& and 8.2& for the restored and eutrophic basin, respectively, while this range was between 11.6& and 13.1& for phytoplankton in the restored and eutrophic basin, respectively. Correlations between d 13 C phyto and d 13 C bact were strong at both sites. During summer and fall, bacterial biomass derives mainly from locally produced organic matter, with minor allochthonous contributions. Conversely, during winter, bacterial dependence on allochthonous carbon was 39-77% at the restored site, and 17-46% at the eutrophic site.

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Effectiveness of reducing external nutrient load entering a eutrophicated shallow lake ecosystem in the Naardermeer nature reserve, The Netherlands

Cited by 37 publications

References 28 publications

Symptoms of Water Eutrophication in the Bachmaty Reservoir

Symptoms of Water Eutrophication in the Bachmaty Reservoir

Recovery of lakes and coastal marine ecosystems from eutrophication: A global meta‐analysis

Seasonal variability in phytoplankton stable carbon isotope ratios and bacterial carbon sources in a shallow Dutch lake

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