Nitrogen in Dutch freshwater lakes: trends and targets

Molen, D.T. van der; Portielje, R.; Nobel, W.T. de; Boers, Paul

doi:10.1016/s0269-7491(98)80083-3

Cited by 25 publications

(2 citation statements)

References 23 publications

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“…This was inconsistent with the research of Van et al (1998), who stated that NFB were relatively abundant in aquatic environments that lack nitrogen. The reason for the high NFB concentrates was that in the process of our counting experiment, 0.1 ml of freshwater dilution containing a little nitrogen was added into the Ashby nitrogen-free media, which could support some bacteria without nitrogen-fixing ability living on the Ashby media.…”

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confidence: 83%

Functional bacteria as potential indicators of water quality in Three Gorges Reservoir, China

Wang

Shen

Niu

et al. 2009

Environ Monit Assess

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The distributions of culturable bacteria and functional bacteria associated with nitrogen (N) or phosphorus (P) in the backwater areas of the Three Gorges Reservoir (TGR) were investigated. Results from seven locations in the TGR indicated that the abundance of total bacteria was high, with 8.12 x 10(6), 2.70 x 10(7), and 6.73 x 10(10) colony-forming units per milliliter or per gram dry weight in surface water, bottom water, and sediments, respectively. Aquatic environments with higher nutrient loadings possessed higher bacteria densities and lower bacteria community diversities. Eight kinds of functional bacteria ratios, including surface water to bottom water and ratios of water to sediments, were calculated, in which four kinds of functional bacteria, namely, nitrogen-fixing bacteria, ammonia-oxidizing bacteria, nitrite-oxidizing bacteria, and organophosphate-solubilizing bacteria, displayed obvious differences in different locations. Based on the functional bacteria ratios of water to sediments, it was found that the obtained result of location grouping from cluster analysis was similar to that based on the community-level physiological profiles studies. The above results showed that the ratios of functional bacteria could distinguish the aquatic environments with different trophic conditions in the TGR. This demonstrated that the distribution ratios of functional bacteria in aquatic environments could work as potential bioindicators to reflect the trophic condition of the water.

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Section: ---------+---------+---------+---------+---------+contrasting

confidence: 83%

Functional bacteria as potential indicators of water quality in Three Gorges Reservoir, China

Wang

Shen

Niu

et al. 2009

Environ Monit Assess

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“…20. For example, nitrogen deposition has been associated with declines in (macrophyte) species diversity (Bobbink et al 2010;Pardo et al 2011;van der Molen et al 1998in Jones et al 2014. Moreover, restoring lakes to a macrophyte-dominated, clear state can require a return to nutrient levels substantially lower than those at which the collapse of original vegetation occurred (Scheffer et al 2001.…”

Section: Rice Cultivationmentioning

confidence: 99%

The Challenge of Agricultural Pollution: Evidence from China, Vietnam, and the Philippines

Cassou¹,

Jaffee²,

Jiang³

2018

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This work is a product of the staff of The World Bank with external contributions. The findings, interpretations, and conclusions expressed in this work do not necessarily reflect the views of The World Bank, its Board of Executive Directors, or the governments they represent. The World Bank does not guarantee the accuracy of the data included in this work. The boundaries, colors, denominations, and other information shown on any map in this work do not imply any judgment on the part of The World Bank concerning the legal status of any territory or the endorsement or acceptance of such boundaries. Nothing herein shall constitute or be considered to be a limitation upon or waiver of the privileges and immunities of The World Bank, all of which are specifically reserved.

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