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Nutrients

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Journal Article
Aquatic Ecosystem Health & Management (2009) 12 (3): 281–295.
Published: 24 September 2009
... Lake Ontario water quality has been relatively well studied and reported, especially during the period from the 1960s to 1980s (e.g. Shiomi and Chawla, 1970 ; Dobson, 1984 ; Lean, 1987 ; Stevens and Neilson, 1987 ). Surveys of nutrients in Lake Ontario began in the late 1960s and led...
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Journal Article
Aquatic Ecosystem Health & Management (2003) 6 (3): 279–288.
Published: 01 September 2003
...V. T. Langenberg; J. Sarvala; R. Roijackers We determined the spatial and temporal distribution of major plant nutrients, dissolved oxygen, chlorophyll- a and primary production, at three deep-water locations in Lake Tanganyika to infer patterns of water displacements and to interpret the impact...
Journal Article
Aquatic Ecosystem Health & Management (2008) 11 (4): 377–391.
Published: 09 December 2008
.... Spring is the time of isothermal water temperatures and provides the initial chemical conditions for the year prior to significant uptake of nutrients by the biota. The spring survey provides a picture of the amounts of nutrients available for the biological activity that will occur during the year...
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Journal Article
Aquatic Ecosystem Health & Management (2012) 15 (2): 234–240.
Published: 01 April 2012
...Yongli Gao; Kedong Yin; Lei He; Paul J. Harrison Trash fish is common feed for caged fish in marine aquaculture. Most feed is not eaten and enters the water surrounding fish farms. The organic matter in trash fish is a nutrient source contributing to aquatic eutrophication impacts such as algal...
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Journal Article
Aquatic Ecosystem Health & Management (2000) 3 (4): 533–544.
Published: 01 January 2000
...S.M.F. Gianesella; F.M.P. Saldanha-Corrêa; C. Teixeira Abstract Dissolved nutrients and phytoplankton distribution in the Bertioga Channel, São Paulo State, were studied over a neap and a spring tide during the austral winter of 1991. Tidal influence and freshwater flow were the main forcing agents...
Journal Article
Aquatic Ecosystem Health & Management (2001) 4 (2): 139–150.
Published: 01 June 2001
... characterised by high concentrations in deeper water during summer overlaid by vanishingly low concentrations of nitrate and phosphate and relatively low in the case of silicate. In winter the three nutrients exhibited relatively high concentrations homogeneously distributed in the entire water column...
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Published: 03 July 2015
Figure 4. Seasonal fluctuations in concentrations of surface nutrients (μM) in Bandar Al-Khayran Bay. More
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Published: 03 April 2017
Figure 7. Spatiotemporal variation of available nutrients in water of the River Krishna. More
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Published: 01 January 2006
Figure 1. Potential transfer pathways of nutrients on sloping lands to surface water in watersheds: (A) surface runoff, (B) subsurface flow, and (C) groundwater. More
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Published: 01 January 2006
Figure 2. A sketch map of influence factors on transfer of nutrients in sloping land soil (□, Δ, • represent some field experimental observations corresponding to three intensities of nutrients loss). More
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Published: 01 January 2006
Figure 3. Experimental results of the nutrients loss (TN, TP and SOM) on a sloping land with 10° gradient under different rainfall intensity. More
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Published: 01 January 2006
Figure 5. Experimental results of the nutrients loss (TN, TP and SOM) on a sloping land with 10° gradient and constant RI (RI = 2 mm min −1 ) at different slope length (6 m and 12 m). More
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Published: 01 October 2016
Figure 1. Concentration of main nutrients in the four enclosures during different months (mean ± SD, n = 3). Different letters in the same month indicate significant differences at P < 0.05. (H enclosure: H. verticillata enclosure; E enclosure: E. crassipes enclosure; H+E enclosure: H More
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Published: 03 April 2019
Figure 2. Surface water chlorophyll a (mg m −3 , grey areas) and nutrients at BK (a + c) and OFF (b + d). a + b: temperature, salinity), c + d: nitrogen compounds (NOx), PO4 and silicate taken from samples at 1m depth. Black circles: temperature, white circles: salinity, grey squares: silicate More
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Published: 03 July 2014
Figure 8. The distribution of surface main nutrients in the box C in spring 2007. (a) Nitrate, (b) phosphate and (c) silicate. Unit: umol l −1 . More
Journal Article
Aquatic Ecosystem Health & Management (2018) 21 (4): 421–437.
Published: 02 October 2018
... of the phytoplankton communities in relation to nutrient (P,N,Si) regimes was undertaken during 2015 (Bay of Quinte) and 2016 (Hamilton Harbour and Toronto Harbour) in order to compare and contrast the dynamics of eutrophication in the three ecosystems. Bay of Quinte was found to be phosphorus and silica enriched...
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Journal Article
Aquatic Ecosystem Health & Management (2002) 5 (3): 363–377.
Published: 01 September 2002
...Külli Kangur; Anu Milius; Tõnu Möls; Reet Laugaste; Juta Haberman In the 1990s, as a consequence of a decline in agricultural production in the watershed and a decrease in the amount of waste water discharged into rivers, the nutrient load carried from the catchment area into large, shallow...
Journal Article
Aquatic Ecosystem Health & Management (2003) 6 (2): 105–117.
Published: 01 April 2003
...T. R. Pritchard; R. S. Lee; P. A. Ajani; P. S. Rendell; K. Black; K. Koop Reports of visible algal blooms have increased in New South Wales (NSW) coastal waters since 1990. Our three-year, multi-disciplinary study assessed the relative importance of natural and anthropogenic nutrients...
Journal Article
Aquatic Ecosystem Health & Management (2015) 18 (3): 334–341.
Published: 03 July 2015
... to those of the native fauna or flora. Using examples of altered nutrients in aquatic environments, the effects of environment on the success of harmful algae are herein considered. Many harmful algae are introduced species, especially via ballast water. While increasing numbers and frequency of harmful...
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Journal Article
Aquatic Ecosystem Health & Management (2000) 3 (1): 35–45.
Published: 01 January 2000
...S.J. Guildford; H.A. Bootsma; E.J. Fee; R.E. Hecky; G. Patterson Abstract Phytoplankton growth in Lake Malawi was moderately nitrogen and phosphorus-deficient according to indicators of phytoplankton nutrient status (particulate C:N, C:P, N:P composition ratios, nitrogen and phosphorus debt assays...