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Juswardi Juswardi, Juswardi
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Journal : BIOVALENTIA: Biological Research Journal

 1 
MORPHOLOGICAL CHARACTERISTICS OF NEPENTHES IN PEAT SWAMP AREA OF TULUNG SELAPAN, SOUTH SUMATERA Wardana, Singgih Tri; Ilmawati, Ika; Tanzerina, Nina; Juswardi, Juswardi; Aminasih, Nita; Harmida, Harmida
BIOVALENTIA: Biological Research Journal Vol. 5 No. 2 (2019)
Publisher : Biology Department, Faculty of Mathematics and Natural Sciences, Sriwijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (640.485 KB) | DOI: 10.24233/BIOV.5.2.2019.152

Abstract

This study is aimed to recognise the morphological characteristics of Nepenthes mirabilis and Nepenthes gracilis in peat swamp area including stem, leaf, tendril, pitcher, flower, fruit, and seed.  This study has been conducted in January  until April 2018, located in Petaling Village Tulung Selapan Sub-District, Ogan Komering Ilir, South Sumatera. This study uses an exploratory method and the the observation sample using the method of random plot is chosen by purposive sampling. Parameters observed morphological characteristics of Nepenthes include stems, leaves, tendrils, pitcher, flower, adn fruit, as well as measurement of environmental factors. Based on the study, the researcher obtained two types of Nepenthes which are Nepenthes mirabilis and Nepenthes gracilis in  peat swamp area of Petaling Village Tulung Selapan Sub-District, Ogan Komering Ilir. Nepenthes mirabilis has a teres stem, leaves that in the form of oblong to lanceolate, has a petiolate, the edge of the leaves is flat covered by smoothy hair, thick peristome in size of 0,4-0,5 cm. Meanwhile stem Nepenthes gracilis has triangular stem, leaves in formed of lanceolate, sessile, flat edge of leaves, thin peristome in size of 0,1-0,2 cm. The pitcher shape of Nepenthes mirabilis and Nepenthes gracilis are cylindrical, infundibulate, and waist. The flower of Nepenthes mirabilis and Nepenthes gracilis are compound in type of  raceme inflorescences. The fruit is formed as capsula, has four lobed, and contains numerous seeds. The seed is spindle-like and white colored.
ACCUMULATION OF HEAVY METAL IN CHINESE WATERCHEST-NUT (Eleocharis dulcis Burm.f.) Trin. Ex Hensch.) IN PHYTOREMEDIA-TION OF COAL ACID MINE WATER ON CONSTRUCTED WETLANDS. Juswardi, Juswardi; Tanzerina, Nina; Junaidi, Endri
BIOVALENTIA: Biological Research Journal Vol. 9 No. 2 (2023)
Publisher : Biology Department, Faculty of Mathematics and Natural Sciences, Sriwijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24233/biov.9.2.2023.375

Abstract

The coal open mining is an activity that has an impact on the environment, including acid mine drainage (AMD). The management of AMD can be done by phytoremediation using Chinese Waterchestnut (Eleocharis dulcis Burm.f.) Trin. ex Hensch.) on system of constructed wetlands (CWs). So the research was carried out with the aim of evaluation the accumulation of heavy metals iron (Fe) and Manganese (Mn) which were absorbed in E. dulcis in constructed wetlands system at WTP Air Laya PT. Bukit Asam. The accumulation of Fe in the roots of E. dulcis was 986.42 ppm (w/w) while the accumulation of Fe in the leaves was 392.22 ppm (w/w). The accumulation of Mn in the roots of E. dulcis was 24.49 ppm (w/w), while the accumulation of Mn in the shoots was 96.83 ppm (w/w). E. dulcis is known to have the potential to increase AMD pH and reduce levels of Fe, Mn and SO42- so that it can meet the quality standards of coal mining activity wastewater. The accumulation of Fe and Mn in the roots and shoots of E. dulcis and on AMD can be used as an effort to monitor the success of AMD phytoremediation on Constructed Wetlands system at WTP Air Laya.
Co-Authors Afriani, Putri Agus Purwoko Doni Setiawan Dwi Puspa Indriani Endri Junaidi, Endri Enggar Patriono, Enggar Erwin Nofyan, Erwin Ferlinahayati Ferlinahayati Hanifa Marisa Harmida Harmida Ilmawati, Ika Kartikawati, Putri Kirin A, Rania Laila Hanum Muharni Muharni Muharni, . Mustafa Kamal Nina Tanzerina Nita Aminasih Purba, Febrin Yohana Putri, Deviana Rina Yuliana Rohmah, Intan Aisyah Nor Rosmania, Rosmania Salni Singgih Tri Wardana Syafrina Lamin, Syafrina Triwardana, Singgih