Mapping of trophic states based on nutrients concentration and phytoplankton abundance in Jatibarang Reservoir

Rudiyanti, Siti; Anggoro, Sutrisno; Rahman, Arif

doi:10.1088/1755-1315/116/1/012048

Cited by 1 publication

(2 citation statements)

References 17 publications

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“…Among our finding, Bacillariophyceae was the dominant class in all periods of time and depths, followed by Chlorophyceae. This was in accordance with the previous studies (Yuliana and Tamrin 2007;Ikhsan et al 2015;Ganai and Parveen 2014;Rudiyanti et al 2017). However, other studies (Umar 2003;El-Karim 2008); Merina et al 2014) reported that Chlorophyceae was predominant in Juanda Jatiluhur Dam, Lake Manzala, and Maninjau Lake.…”

Section: Resultssupporting

confidence: 90%

“…The composition of phytoplankton species The results of our study found 12 genera of phytoplankton, i.e., Bacillariophyceae (6 genera), Chlorophyceae (4 genera), and Cyanophyceae (2 genera) in Laguna Lake. The number of genera found in Laguna Lake was less than those of Zhao et al (2016) in Bange Lake who recorded 41 genera, Ganai and Parveen (2014) in Wular Lake who found 64 genera, Rudiyanti et al (2017) in Jatibarang Reservoir who found 21 genera, and Rahman et al (2016) in Toba Lake who recorded 35 genera. Among our finding, Bacillariophyceae was the dominant class in all periods of time and depths, followed by Chlorophyceae.…”

Section: Resultsmentioning

confidence: 82%

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The best incubation time for primary productivity of phytoplankton in Laguna Lake, North Maluku, Indonesia

Yuliana

Irfan

2018

Biodiversitas

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Yuliana, Irfan M. 2018. The best incubation time for primary productivity of phytoplankton in Laguna Lake, North Maluku, Indonesia. Biodiversitas 19: 1021-1028. Primary productivity of phytoplankton is a source of energy and organic matter utilized by organisms at higher food chain levels. The measurement of the high rate of primary productivity can be done through the incubation of sample water at a particular time and time depending on sunlight intensity. This study aimed to estimate the best incubation time to achieve the highest primary productivity of phytoplankton in Laguna Lake, Ternate City, North Maluku Province, Indonesia in February 2017. The study was conducted at one location with four different levels of depth of 0, 5, 10, and 15 meters, and at three incubation times, i.e., 09:00-13:00, 10:00-14:00, and 11:00-15:00 (Eastern Indonesian Time). The chemical and physical parameters of radiance, temperature, pH, nitrate, and orthophosphate content were measured to estimate water quality of the lake. The results of this study showed that were 10 genera of phytoplankton belonging to Bacillariophyceae (6 genera), Chlorophyceae (4 genera), and Cyanophyceae (2 genera). The Laguna Lake has temperature ranged between 29.0-31.1oC, nitrate content of 0.22-0.58 mg l-1, orthophosphate content of 0.14-0.27 mg l-1, and pH 7. The primary productivity value at incubation time 09:00-13:00; 10:00-14:00; and 11:00-15:00 were of 101,851-258,278; 40,59-351,643; and 76,197-305,754 mgC m-3 hours-1, respectively. The best incubation time that provides the highest value in the measurement of primary productivity of phytoplankton at Laguna Lake was at 10:00 am to 14:00 pm.

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Section: Resultssupporting

confidence: 90%