Vol. 4, Issue 1 (2019)
Temperature shock of the growth of Ulva lactuca in pangandaran, west java Indonesia
Author(s): Egga Restu Pamungkas, Herman Hamdani, Evi Liviawaty, Asep Sahidin
Abstract: Temperature shock would cause an affected the growth and physiology of Ulva lactuca. The study was conducted to determine the effect of global warming on the growth of Ulva lactuca in the nature. The study was conducted in Pangandaran, West Java, Indonesia. The results of the study showed that salinity, acidity (pH), dissolved oxygen, concentrations of nitrate and phosphate waters respectively were as follows 29 – 39 ‰; 6,62 – 8,37; 3,3 – 9,8 mg/l; 0,0572 to 1, 012 mg/l ; and 0,03 – 0,27 mg/l. Water temperature ranges from 26-34.4 ºC with temperature fluctuations reaching 8 ºC. The results showed that an increase in sea water temperature and length of receding during October had a negative effect on the growth of Ulva lactuca, disruption of the reproductive stages and inhibition of growth and caused in damage to the enzyme and destruction of the biochemical mechanism in the macroalgae thallus.