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| 003 | PH-QcNFR | ||
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| 022 | 1 | _a2672-2836 (Online) | |
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_aPH-QcNFR _beng _cPH-QcNFR |
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| 100 | 1 |
_aReyes, Thomas G. _92908 |
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| 245 | 1 | 0 |
_aLimnological and fisheries survey of Naujan Lake / _cThomas G. Reyes |
| 264 | 1 |
_aQuezon City, Philippines : _bBureau of Fisheries and Aquatic Resources , _c1978 |
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_atxt _btxt |
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_ac _bc |
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_acr _bcr |
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_atext file _bPDF |
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| 504 | _aIncludes bibliographical references | ||
| 520 | 3 | _aLimnological investigations of Naujan Lake were conducted for a period of one year and five months to evalute its productivity. Studies were made on the lake’s physico-chemical and biological characteristics including the lake’s fisheries, using the monthly landings in the three existing landing points including catches from the only fish corral operating in the Results of the chemical analysis of the water showed a considerable amount of dissolved oxygen ranging from 4.9 to 8.5 parts per million; pH ranges from 6.0 to 9.8; carbon dioxide ranges from 0.8 to 2.0 and alkalinity had an annual mean reading of 145.4 to 162 as calcium carbonate, from surface to bottom. Visibility test ranged from 1 to 2.5 meters. Phytoplankton identified consisted of Cyanophyta, Cholorophyta and Chrysophyta while Zooplankton was represented by rotifers, copepods and cyclop. These indicate that the lake is highly productive as evidenced by a chemically active substrate and the presence of rich dissolved substances. The lake was found to be biologically active and showed signs of seasonal and spatial variations. The fish stock reflected a varying fair to large amounts of indigenous and migratory fish species present in the lake. A continuing program of research is indispensable for the lake’s development | |
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_aFish surveys _2LCSH _93463 |
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_aFish surveys _zPhilippines _2LCSH _95858 |
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| 650 | 0 |
_aLimnology _zPhilippines _2LCSH _95859 |
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| 651 | 0 |
_aNaujan Lake (Philippines) _2LCSH _95860 |
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| 773 | 0 |
_078 _9150 _aPhilippines. _oIRC00023 _tThe Philippine Journal of Fisheries _x2672-2836 (Online) _gVolume 16, Issue no. 2 ( 1978), page 61 - 74 |
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| 856 | 7 |
_2https _uhttps://www.nfrdi.da.gov.ph/tpjf/vol16_2/LIMNOLOGICAL%20AND%20FISHERIES%20SURVEY%20OF%20NAUJAN%20LAKE.pdf _yOpen access |
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_2lcc _n0 _cJA _iIMC000138 |
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