Bioakumulasi Logam Berat (Pb) pada Vegetasi Mangrove Famili Rhizophoraceae di Teluk Lembar Kabupaten Lombok Barat

Abstract

Mangroves are one of the coastal vegetations that have ecological roles and benefits as disaster mitigation, one of which is the bioaccumulation of lead (Pb) heavy metal contamination. The purpose of this study was to determine the uptake ability of the heavy metal lead (Pb) by mangrove leaf and root tissues, and the potential storage capacity of the heavy metal lead (Pb) in the substrate of the mangrove ecosystem found under stands of each type of mangrove in the Rhizophoraceae family. The research was conducted on the mangrove ecosystem of the Lembar Bay of West Lombok Regency. This research is a quantitative descriptive research using purposive random sampling method, which starts with taking samples of leaves and roots of each different species and taking samples of the substrate found under stands of mangrove species in the Rhizophoraceae family. Sample testing was carried out using the Atomic Absorption Spectrophotometer (AAS) method. The results showed that the heavy metal (Pb) content in the root tissue was greater than the test results on the leaf samples, namely the roots of Bruguiera gymnorrhiza of 7.23 ppm, the roots of Rhizophora stylosa of 2.84 ppm, and the roots of Ceriops decandra. of 2.84 ppm, while for Rhizophora stylosa leaves it was 4.23 ppm, for Bruguiera gymnorrhiza leaves it was 2.92 ppm, and for Ceriops decandra leaves it was 2.91 ppm. In addition, the content of heavy metal deposits found under the Bruguiera gymnorrhiza mangrove stands was 19.64 ppm, rhizophora stylosa substrate was 16.94 ppm, and 12.94 ppm ceriops decandra substrate. Meanwhile, based on the phytoremediation ability of mangrove species in the Rhizophoraceae family of the Sheet Bay mangrove ecosystem, it was found that the leaves of the type Rhizophora stylosa (- 1.24), were higher than those of Bruguiera gymnorrhiza (- 0.26), and Ceriops decandra (0.20). Similarly, the ability of root tissue as a phytoremediation agent was found to be greatest in Rhizophora stylosa (- 1.32).

Potential of Rhizophora apiculata Blume. in Phytoremediation of Heavy Metals Pb and Cu in the Mangrove Forest Nature Reserve East Coast, Alang-Alang Village, Tanjung Jabung Timur, Jambi

“…This is presumably because the accumulation of Pb metal in sediments is more than Cu metal, so that accumulation in roots is also the case. These results are in accordance with research, that the heavy metal Pb is absorbed in the roots of Rhizophora compared to other parts [21]. Then, explained that the correlation between heavy metal accumulation between sediments and roots is directly proportional, that is, the higher the concentration of heavy metals in the sediment, the better the accumulation by mangrove roots [6].…”

“…The BCF values for Pb and Cu in the roots and leaves of R. apiculata were less than 1, presumably due to the accumulation of heavy metals, both Pb and Cu, in the sediments more than in the roots and leaves of R. apiculata. This was also confirmed, BCF values in leaves and roots <1 indicates that the heavy metal content is higher in the substrate tissue (sediment) compared to the heavy metals present in leaves and roots [21].…”

Komposisi Vegetasi Mangrove di Desa Apar, Pariaman

“…Terutama untuk jenis mangrove R. mucronata pada stasiun I yang memiliki penyebaran yang luas dan masuk dalam kategori yang baik. Menurut (Rahman et al, 2019) Pertumbuhan dan perkembangan mangrove merupakan kemampuan adatasi dan kesesuaian faktor lingkungan yang berpengaruh terhadap dominasi komposisi jenis mangrove pada berbagai strata pertumbuhan. Keberadaan mangrove di teluk Sereweh pada strata semai didominasi oleh R.apiculata, strata pancang didominasi oleh R.stylosa, strata tiang dan pohon didominasi S.alba.…”

Studi Komparasi Kuantitas Bivalvia pada Zona Intertidal di Pantai Ntana Kabupaten Bima sebagai Upaya Penyusunan Brosur Konservasi

“…Genangan air laut terhadap daratan pesisir yang terus berubah dengan dinamika yang cukup tinggi, memungkinkan pemilihan zona bagi kawasan ini banyak dipengaruhi oleh pola pergerakan pasang surut. Salah satu hewan yang terdapat di zona Intertidal adalah hewan yang termasuk dalam kelas Bivalvia (Rahman et al, 2022).…”