Hydrology and Water Supply for Pond Aquaculture

Yoo, Kyung Hwa; Boyd, Claude E.

doi:10.1007/978-1-4615-2640-7

Cited by 80 publications

(96 citation statements)

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“…These include sodium silicate and sodium oxalate (TMH1 1986), Calgon (BS 1990;IS 1985;ISRIC 2002), sodium pyrophosphate decahydrate (Schuurman & Goedewaagen 1971), sodium tetra pyrophosphate (Yoo & Boyd 1994), sodium hexametaphosphate (ASTM 1965;Lambe 1951; SANS 2014) and di-sodium di-hydrogen pyrophosphate (formerly used…”

Section: Introductionmentioning

confidence: 99%

The effect of type, concentration and volume of dispersing agent on the magnitude of the clay content determined by the hydrometer analysis

Kaur

Fanourakis

2016

J. S. Afr. Inst. Civ. Eng.

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Section: Introductionmentioning

confidence: 99%

The effect of type, concentration and volume of dispersing agent on the magnitude of the clay content determined by the hydrometer analysis

Kaur

Fanourakis

2016

J. S. Afr. Inst. Civ. Eng.

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“…Potential evapotranspiration (PET) can be measured in lysimeters-small, isolated soil-water systems in which PET can be assessed by the water budget method. Empirical methods such as the Thornthwaite equation or Penman equation may be used to estimate PET based on air temperature and other variables (Yoo and Boyd 1994). Of course, for a watershed where both precipitation and runoff are known, annual evapotranspiration (ET) is…”

Section: Measurementmentioning

confidence: 99%

“…) is used to obtain a curve number for a particular watershed area. A nomograph is used to estimate overland flow from rainfall amount and curve number (Yoo and Boyd 1994).…”

Section: Measurement Of Runoff and Stream Flowmentioning

confidence: 99%

An Overview of Hydrology and Water Supply

Boyd

2015

Water Quality

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An overview of the hydrological cycle, how this cycle is influenced by local conditions, and the distribution of water within the hydrosphere is presented. Water quality investigations often require an assessment of water quantity. This is because studies of water quality may necessitate information on amounts of dissolved or particulate substances added to or discharged from aquatic systems as a result of inflowing or outflowing water of natural or anthropogenic origin (pollution). A discussion of simple water velocity and volume measurements and their use in the preparation of water budgets is included.

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“…A unique feature of the 4-6 m deep striped catfish ponds is the occurrence of denitrification at the bottom, which significantly reduced N discharge (see 'Water quality maintenance for fish growth' above). 'Orbcastel et al (2009b), (h) Foy & Rosell (1991), (i) Warrer-Hansen (1982), Sumari (1982) and Solbe (1982), (j) Thakur & Lin (2003), (k) Yoo & Boyd (1994), (l) Boyd & Tucker (1998), (m) Hall et al (1992) with commercial feed At present, the industry discharges water effluent directly to the river and sludge to a sedimentation pond or to the river. If all sludge were treated before discharge, then striped catfish farming would actually remove OM from the river.…”

Section: N Utilization Efficiencymentioning

confidence: 99%

Quantifying sustainability indicators in striped catfish Pangasianodon hypophthalmus downstream and upstream ponds

Nhut¹,

Hảo²,

Bosma³

et al. 2017

Aquacult. Environ. Interact.

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To assess the potential for improving sustainability and efficiency in an important Vietnamese finfish culture, we quantified sustainability indicators for 2 downstream and 2 upstream 3 to 4 m deep ponds for striped catfish Pangasianodon hypophthalmus (Sauvage, 1878) production along the Mekong River, Vietnam. The resources used per kg fish produced were (downstream vs. upstream): 2.8 vs. 7.1 m 3 water, 0.04 vs. 0.14 kWh energy, 0.06 vs. 0.11 h human labour and 0.06 vs. 0.15 g antibiotics (p < 0.05). The feed conversion ratio (kg feed dry matter per kg fish wet weight) was 1.50 vs. 1.65 and feed dry matter utilization efficiency was similar (28 vs. 30%) for both types of ponds (p > 0.05). Nitrogen and phosphorus utilization efficiencies were 44 vs. 40% for nitrogen (p < 0.05) and 17.7 vs. 17.6% for phosphorus (p > 0.05). An advantage of production in deep ponds is the breakdown of organic matter through denitrification and fermentation. Based on the difference between feed input and monitored outputs and sinks, an estimated 29-37% of dry matter volatilized as CO 2 and 30-34% of nitrogen was lost as N 2 . A major disadvantage of the deep pond production system is its dependency on water exchange with the Mekong River, resulting in low biosecurity, which is aggravated by the lack of availability of disease-free fingerlings. Dealing with disease caused farmers to apply suboptimal feeding rations and to lengthen the culture period. Developing (semi-)closed systems that adopt elements from recirculation technology could improve both culture performance and sustainability.

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Hydrology and Water Supply for Pond Aquaculture

Cited by 80 publications

References 0 publications

The effect of type, concentration and volume of dispersing agent on the magnitude of the clay content determined by the hydrometer analysis

The effect of type, concentration and volume of dispersing agent on the magnitude of the clay content determined by the hydrometer analysis

An Overview of Hydrology and Water Supply

Quantifying sustainability indicators in striped catfish Pangasianodon hypophthalmus downstream and upstream ponds

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