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Wyświetlanie 1-2 z 2
Tytuł:
Water quality assessment to improve the ecological function of waters : the South Coast of the Yogyakarta Shrimp Farming Area
Autorzy:
Susetyaningsih, Retno
Suntoro, Suntoro
Gunawan, Totok
Budiastuti, Maria T. Sri
Powiązania:
https://bibliotekanauki.pl/articles/28411639.pdf
Data publikacji:
2023
Wydawca:
Instytut Technologiczno-Przyrodniczy
Tematy:
aquatic ecology
ecological function
shrimp farming
waste
water quality
Opis:
This study aims to assess the quality of lagoon water used as a dumping ground for shrimp farming waste. The research uses the descriptive method. The research was conducted at the Shrimp Cultivation Site in the Banaran Kulon Progo Village, Special Region of Yogyakarta, Indonesia. The research focuses on physicochemical parameters, including temperature, pH, total suspended solid (TSS), dissolved oxygen (DO), ammonium (NH4-N), nitrate (NO3-N), and phosphate. The sampling technique is based on SNI 6989.57:2008. Sampling was carried out 48 times in 3 lagoons during rainy and dry seasons. Dialysis data was descriptively classified with the help of Storage and Retrieval of Water Quality Data System (STORET) and water quality was generally classified as C (moderately polluted) and D (heavily polluted) categories in dry and rainy seasons. The results showed that in the rainy season the highest pH, nitrate and phosphate levels of 8.3, and 6.1 and 20.8 mg∙dm-3, were up to 15% less than in the dry season in the same point. Thus, it can be concluded that these values from the STORET in the dry season are larger than those in the rainy season. The study results are expected to become a basis for the evaluation of the quality of shrimp farming wastewater so that environmental health can be controlled and the risk of waste pollution reduced.
Źródło:
Journal of Water and Land Development; 2023, 59; 195--201
1429-7426
2083-4535
Pojawia się w:
Journal of Water and Land Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The impact of water quality on the availability of phytoplankton and growth of Litopenaeus vannamei
Autorzy:
Musa, Muhammad
Thoyibah, Auliarifka A.
Puspitaningtyas, Dyah A.
Arsad, Sulastri
Mahmudi, Mohammad
Lusiana, Evellin D.
Maftuch, Maftuch
Huda, Agus S.
Powiązania:
https://bibliotekanauki.pl/articles/2203547.pdf
Data publikacji:
2023
Wydawca:
Instytut Technologiczno-Przyrodniczy
Tematy:
algae
aquaculture
canonical correspondence analysis
CCA
dynamics of water quality
principal component analysis
PCA
vannamei shrimp
Opis:
This research analysed the availability of phytoplankton and the growth rate of Vannamei shrimp in relation to water quality changes. The research was carried out in February-March 2021 for a half cycle of shrimp cultivation in two ponds of the Brackish Water Fish Culture Probolinggo Laboratory in Probolinggo, East Java, Indonesia. The research used a descriptive method and included a survey. Sampling was made every two weeks for two months. Nine parameters were measured and ten shrimps were taken for a specific growth rate (SGR) measurement once per sampling. Data were analysed using the principal component analysis (PCA) and canonical correspondence analysis (CCA). Secondary data of water quality were added for the PCA. The results show that the phytoplankton found in the first pond consisted of Chlorophyta, Chrysophyta, and Cyanophyta, whereas the phytoplankton in the other pond included Chlorophyta, Chrysophyta, Cyanophyta, and Dinophyta. The abundance of phytoplankton ranged from 12-80∙103 cell∙cm-3, which indicated eutrophic waters. The PCA demonstrated that pH, nitrate, and total organic matter (TOM) significantly influenced phytoplankton abundance in the pond. In addition, water quality parameters, such as temperature, transparency, salinity, nitrite and phosphate levels, were tolerable in both ponds for the growth of shrimps. However, the level of pH was lower than the aquaculture quality standard, whereas those of nitrate, ammonia, and TOM were higher. The growth rate of Vannamei shrimp increased by 0.76–7.34%∙day-1.
Źródło:
Journal of Water and Land Development; 2023, 56; 127--135
1429-7426
2083-4535
Pojawia się w:
Journal of Water and Land Development
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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