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2 Journal of Ecological Engineering

2 2021

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Preliminary Study of the Effect of Tourism Activities on Litter Pollution: a Case Study on Padar Island, Komodo National Park, Indonesia

Cordova Muhammad Reza, Purbonegoro Triyoni, Puspitasari Rachma, Subandi Riyana, Kaisupy Muhammad Taufik, Wibowo Singgih Prasetyo Adi, Nurjamin, Suparmo, Sapulete Serly

Journal of Ecological Engineering

2021

Vol. 22, nr 8

131--139

Tourism is a significant socioeconomic activity in a coastal country such as Indonesia. However, it degrades the ecosystem quality when the increasing litter pollution is poorly managed in the marine tourism area. The purpose of this research was to assess the impact of tourism on the litter pollution on the Padar Island, Komodo National Park, Indonesia, specifically on the hiking track. According to the performed investigation, plastic litter was discovered dominant on the Padar Island (131 of 146 items). It was found that filter cigarette butts (49 items, 33.56%), candy wrapper (18 items, 12.33%), wet tissue/wet wipes (17 items, 11.64%) and outsole from shoe/sandals (13 items, 8.90%), dominated the litter collected. Smoking activity, food and beverage consumption, and hiking activity are all examples of activities that may result in litter from visitors in this national park area. Tourism impacts the litter pollution in the Padar Island hiking trail. Therefore, more robust awareness strategies and controls are required to reduce the litter pollution and prevent further consequences.

Coastal Water Properties and Hydrodynamic Processes in the Malacca Strait: Case Study Northeastern Coast of Sumatra, Indonesia

Koropitan Alan Frendy, Barus Ternala Alexander, Cordova Muhammad Reza

Journal of Ecological Engineering

2021

Vol. 22, nr 11

16--29

Dynamic processes in the coastal waters play an important role in regulating the marine pollution distribution caused by riverine inputs and are relevant for coastal management. Here, the coastal water properties were investigated from field measurements and modeling hydrodynamic processes in the northeastern coast of Sumatra. The present study found that the river discharges affect a low salinity of 28–29 psu in the surface waters along near the coastal line. The river discharge might influence by strong La Niña with high rainfall in December 2010. However, the authors suggested that the effect of tidal mixing is stronger than the freshwater discharges, resulting in vertically well-mixed coastal waters in the region. The observed tidal range of 200 cm indicates a strong tidal mixing in the waters. The tidal elevation contributes more than 70% of the total measured sea elevation. The tidal current signal in which the flow pattern simulations show no significant differences among tide and wind-tide driven currents, is also dominant (77%).