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Search Results for nutrient surplus
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Aquatic Ecosystem Health & Management (2006) 9 (1): 21–26.
Published: 01 January 2006
... outputs. Based on the farm nitrogen balance calculation, the management options that would contribute to a more favorable nitrogen balance were also identified. Copyright © AEHMS 2006 environmental risk nutrient surplus loss This project was funded by the Office of Science and Technology...
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. These...
Aquatic Ecosystem Health & Management (2013) 16 (2): 222–226.
Published: 01 April 2013
... ; Istvánovics, 2008 ). Many algae, when provided with a sufficient supply of P, can absorb the nutrient in quantities far in excess of their actual needs (Istvánovics, 2008 ). Assimilation of surplus amount of P by algae can provide sufficient P to maintain algal growth even at times when the external...
Aquatic Ecosystem Health & Management (1998) 1 (1): 75–89.
Published: 01 January 1998
... the four coastal sta- tions A, B, C and D during the period 21 March 1994 to14 May 1995. peak (Genin et al., 1995) and subsequent decom- position could be a significant source of nutrients that supported surplus primary productivity during the period March to June. (2) Of all the stations, station A...
Aquatic Ecosystem Health & Management (2001) 4 (3): 225–233.
Published: 01 September 2001
...Wolfgang J. Junk Abstract The Amazon River floodplain ( várzea ) belongs to the few areas in central Amazonia with relatively high natural fertility and productivity, because the annual flooding with sediment-rich water add nutrients to the system. Many development planners consider the area to be...
Aquatic Ecosystem Health & Management (2008) 11 (3): 310–320.
Published: 25 August 2008
... be defined as a phase of “oligotrophication”. This trophic state is closely related to nutrient reduction in the water and enhanced by a drift of organic materials from littoral to profundal bottoms. This was due to the remarkable water level reduction of about five meters which occurred in the lake...
Aquatic Ecosystem Health & Management (2010) 13 (3): 241–254.
Published: 31 August 2010
... addressing overfishing will need to transform the fishery from an open-access to a limited access system. As important as direct intervention in the management of the fisheries, will be the management of catchment processes. Increased nutrient inputs; changes to the phytoplankton composition; sediment...
Aquatic Ecosystem Health & Management (2020) 23 (4): 427–435.
Published: 01 October 2020
... nutrient loadings, contamination of toxic compounds and resource exploitation, e.g. aquaculture. Therefore, the possible uncertainty in water quality assessment becomes a critical issue, because its variability can potentially impair the reliability of either environmental planning or management...
Aquatic Ecosystem Health & Management (2017) 20 (1-2): 71–85.
Published: 03 April 2017
... abstraction envisaged under inter-river-linking could further aggravate the situation. Therefore, detailed information on ecology and fishery aspects of the affected rivers is mandatory to infer possible impacts of interlinking. The Ken–Betwa link project prepared by NWDA envisages diversion of surplus...
Aquatic Ecosystem Health & Management (2018) 21 (3): 306–317.
Published: 03 July 2018
.... Great Lakes Res . 42 , 687 – 694 . Hoyle , J.A. , Bowlby , J.N. , Brousseau , C.M. , Johnson , T.B. , Morrison B.J. , Randall. R.G. , 2012 . Fish community structure in the Bay of Quinte, Lake Ontario: The influence of nutrient levels and invasive species . Aquat...
Includes: Supplementary data
Aquatic Ecosystem Health & Management (2007) 10 (2): 153–173.
Published: 08 June 2007
... are rare because of insufficient light. Similarly, in blackwater rivers, aquatic macrophytes are rare or absent because of low nutrient levels and/or low pH values. In savanna areas, the floodplains are covered by savanna vegetation, with flood-tolerant forest surrounding permanent water bodies...
Aquatic Ecosystem Health & Management (2005) 8 (1): 81–94.
Published: 01 January 2005
... direct human consumption. Among the Gulf countries, only Bahrain enjoyed a notable surplus of fishery exports over imports, with those of the United Arab Emirates (UAE) being only slightly in favor of exports. The Gulf's fish stocks are either fully exploited or over exploited, so aquaculture is the only...
Aquatic Ecosystem Health & Management (2006) 9 (2): 249–260.
Published: 01 July 2006
... ) 2.4 3.2 4.4 6.3 (7) (5–7) (< 3–5) Ph 6.72 7.7 8.1 8.2 7.5–8.4 7.3–8.8 6.5–9.0 Nutrients and Organics Total Organic Carbon (mg l −1 ) 0.00 0.00 0.00 0.00 Ammoniacal Nitrogen (mg l −1 ) 0.07 0.26 0.13 0.16 (0.1) (0.3) (0.9) Nitrate...