Utilization of sensors and SMS technology to remotely maintain the level of dissolved oxygen, salinity and temperature of fishponds
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Abstract
Due to the occurrence of fish kills in various fish producing areas in our country, millions of pesos and opportunities for the Filipino people had been put into waste. Bataan Peninsula State University (BPSU) collaborated with the Central Luzon Association of Small-scale Aquaculture to devise strategies to address the said problem and prevent further losses.
More often than not, a fish kill can be attributed to the low level of dissolved oxygen (DO) in the water, decrease or increase in salinity and sudden increase in temperature, which usually occur after heavy rainfall, flooding or high tide, or high levels of ammonia due to decomposing organic matter and high temperature during summer.
For these reasons, BPSU researchers tested the use of radio frequencies and installed sensors in different areas of the fishpond at various depths to remotely monitor the levels of DO, salinity and temperature of the water. Once these reach critical levels, the installed system which comes with a specific program, will send an alarm through radio frequencies via Short Messaging Services (SMS) technology on the cellular/mobile phone of the caretaker or the fishpond operator. Upon receiving the alarm, caretakers were able to adjust the levels of dissolved oxygen, salinity and temperature of the water by remotely switching on the air compressor or the electric water pump using their cellular/ mobile phone, thus preventing losses due to fish kills.
Suggested Citation
Munoz, R. C., Calderon, R. P., Flores, R. C., Masangcap, S. C., Angeles, J. P., &Colentava, M. (2015). Utilization of sensors and SMS technology to remotely maintain the level of dissolved oxygen, salinity and temperature of fishponds. In M. R. R. Romana-Eguia, F. D. Parado-Estepa, N. D. Salayo, &M. J. H. Lebata-Ramos (Eds.), Resource Enhancement and Sustainable Aquaculture Practices in Southeast Asia: Challenges in Responsible Production of Aquatic Species: Proceedings of the International Workshop on Resource Enhancement and Sustainable Aquaculture Practices in Southeast Asia 2014 (RESA) (pp. 243-249). Tigbauan, Iloilo, Philippines: Aquaculture Department, Southeast Asian Fisheries Development Center.
Type
Conference paperISBN
9789719931041Related items
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Series: Summary of Proceedings No. 1/2013;
Primary productivity, chlorophyll, phytoplankton and the development to eutrophic state of Taal Lake, southern Luzon, Philippines
(PCAARRD-DOST, 2013)Physico-chemical properties and biological components such as primary productivity, chlorophyll-a and phytoplankton were measured from January to October of 2008. This study aimed to determine the present trophic state and to provide information needed by policy makers for the management, conservation and sustainable use of Taal Lake. Primary productivity was measured using the Light and Dark Bottle Method, chlorophyll-a by fluorescence using SD204 Instrument, phytoplankton using Haemacytometer Method, and identification keys. All the parameters except pH have no significant differences on the type (cage or open water areas). However, all the parameters except net primary productivity and chlorophyll had significant differences between cages and open water areas. There are significant differences with respect to water temperature, water transparency, and dissolved oxygen among stations and months. Dissolved oxygen, nitrate and net primary productivity in the cages and open water areas displayed interaction effects on the months. Moreover, all parameters except Gross Primary Productivity (GPP) and chlorophyll-a in the stations had significant interaction effects also on the months. Nitrate is positively correlated with primary productivity, dissolved oxygen and pH, while total phosphorus has direct association with chlorophyll. Based on transparency readings, Taal Lake is mesotrophic. Both nitrates and total phosphorus exceeded the prescription of USEPA 1976a and UNEP-IETC-ILEC 2001 of 0.30 mg/L and 84.4 mg/L, respectively. On the other hand, chlorophyll-a peak concentration obtained in the study was fivefolds higher than the standard set by USEPA (1974) as cited by Novotny and Olem (1994) and UNEP-IETC-ILEC (2001). The cyanobacterial dominance and high chlorophyll, reduced transparency, off-flavor, and odor problems are symptoms of eutrophication, indicating that Taal Lake has developed into eutrophic status. It is recommended that continuous monitoring of water quality be carried out to determine if there is improvement or conditions remain the same or further deterioration occurs. Likewise, the carrying capacity of the lake and the causes of off-flavor must also be determined. -
Environmental and other non-infectious diseases
; Pakingking, Rolando V., Jr.
(Aquaculture Department, Southeast Asian Fisheries Development Center, 2010)
The chapter presents some of the environmental non-infectious diseases of aquatic animals. Non-infectious diseases are caused by adverse environmental conditions, nutritional disorders, or genetic defects. While they can result a sudden mass mortality or death, they are not contagious. Environmental diseases are the most important in aquaculture. This includes low dissolved oxygen, high ammonia, high nitrite, or natural or man-made toxins in the aquatic environment. -
Environmental and other non-infectious diseases
(Aquaculture Department, Southeast Asian Fisheries Development Center, 2001)The chapter presents some of the environmental non-infectious diseases of aquatic animals. Non-infectious diseases are caused by adverse environmental conditions, nutritional disorders, or genetic defects. While they can result a sudden mass mortality or death, they are not contagious. Environmental diseases are the most important in aquaculture. This includes low dissolved oxygen, high ammonia, high nitrite, or natural or man-made toxins in the aquatic environment.
