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Journal : Bumi Lestari

JENIS DAN MANFAAT FLORA PULAU DERAWAN KABUPATEN BARAU PROVINSI KALIMANTAN TIMUR Ni Nyoman Darsini; I .G. A. Sugi Wahyuni; A.A.K. Darmadi; Ni Nyoman Wirasiti
Bumi Lestari Journal of Environment Vol 8 No 1 (2008)
Publisher : Environmental Research Center (PPLH) of Udayana University

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Abstract

A study on identication of plants species available on Derawan Island, Berau Regency, East Kalimantan has been conducted based on exploration survey around the island between 2002-2005. The plants whicht have observed were then listed on a table, their scientific names wrre recorded, their status (whether being protected or not) were determined, and the benefits or use of the plants were also listed. From this study it can be found 45 species of 30 families. They may bring benefits for the locals as vegetables, source of medicine, providing shady spots, or decorative plants.
Comparison of Zinc ( Zn ) and Cadmium ( Cd ) Levels in Rhizophora Mangrove Species mucronata in Muara Tukad Badung, Bali Ferdinan, David Firman; Darmadi, Anak Agung Ketut; As-syakur, Abd. Rahman; Wijana, Made Sara
Bumi Lestari Journal of Environment Vol 24 No 2 (2024)
Publisher : Environmental Research Center (PPLH) of Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843//blje.2024.v24.i02.p04

Abstract

Mangrove forests are an ecosystem that has an important role and function for the environment. Mangrove forests have ecosystems that are very beneficial to humans directly or indirectly. Apart from that, the mangrove ecosystem also has other important functions, namely as a catcher of sediment and as a prevention of erosion and as a soil stabilizer in estuary areas. Data collection was carried out in March using several methods, namely BCF, TF, and Igeo. Sampling was carried out using the Rhizopora type of mangrove mucronata at 3 different stations. The heavy metals tested in this study were zinc ( Zn ) and cadmium ( Cd ). In the highest sediment values for Zn and Cd were 15.516 and 0.532 respectively. In water, the highest levels for Zn and Cd are 0.020 and 0.006 respectively. The highest BCF root values for Zn and Cd are 0.00896 and 0.0609 respectively. The highest leaf BCF values for Zn and Cd are 0.02417 and 0.04487 respectively. The highest TF values for Zn and Cd are 2.68784 and 0.92857 respectively. The Igeo value for Zn is in the unpolluted category and CD is in the slightly polluted category