Abstrak: Kegiatan alih fungsi lahan basah banyak terjadi di kecamatan Ilir barat I sekitar jalan soekarno hatta Palembang. Aktivitas alih fungsi lahan ini dapat menghilangkan dan merusak habitat bagi biodiversitas khususnya serangga di area tersebut. Penelitian ini bertujuan untuk mempelajari keanekaragaman dan kelimpahan serangga yang ada di kawasan jalan Soekarno Hatta Palembang. Penelitian ini menggunakan metode survei, yaitu penyelidikan yang dilakukan untuk memperoleh sata dari kondisi yang ada dan mencari keterangan secara faktual dari suatu daerah. Hasil penelitian ini ditemukan 109 spesies, 56 famili dan 10 ordo. Berdasarkan jumlah spesies dari masing-masing lokasi/stasiun survei menunjukan bahwa di ST 1 (rawa alami) ditemukan 77 spesies, ST 2 (rawa yang telah ditimbun) ditemukan 53 spesies, ST 3 (rawa yang telah dijadikan pemukiman) ditemukan 50 spesies, dan ST 4 (rawa yang telah dibangun perukoan) ditemukan 57 spesies serangga. Rawa alami memiliki keanekaragaman dan kelimpahan serangga tertinggi, sedangkan lahan rawa yang telah di konversi menjadi pemukiman memiliki keanekaragaman dan kelimpahan terendah. Hasil penelitian membuktikan bahwa alih fungsi lahan rawa mempengaruhi keanekaragaman dan kelimpahan serangga di kawasan jalan Soekarno Hatta Palembang.Kata kunci: keanekaragaman, kelimpahan, serangga, sumatera, rawaAbstract: Wetland conversion activities occur mostly in Ilir Barat I sub-district around the Soekarno Hatta Road in Palembang. This land conversion activity can eliminate and destroy habitat for biodiversity, especially insects in the area. This research was conducted to study the diversity and abundance of insects in the Soekarno Hatta Palembang road area. The research method used in this study is a survey method, which is an investigation carried out to obtain data from the area. The results of this study found 109 species, 56 families and 10 orders. Based on the number of species from each survey location / station, it was found that in ST 1 (natural swamp) was found 77 species, ST 2 (stockpiled swamp) was found 53 species, ST 3 (swamp which had been made a settlement) was found 50 species, and ST 4 (swamps that have been built by shop houses) was found 57 species. ST1 have the highest diversity and abundance of insects, while ST3 have the lowest diversity and abundance. The results of the study prove that the conversion of swamp land has an effect on diversity and abundance of insects in Soekarno Hatta road, Palembang.Keywords:  diversity, abundance, insects, Sumatera, swamps

Lebak swamp in Bukit Baru has been largely degraded due to reclamation activity. Lebak swamp plays important role as land resource in Bukit Baru, Palembang. The aim of this study was to examine the composition of Odonata in lebak swamps in Bukit Baru, Palembang, Indonesia. The transect line (1 km) was used to collect odonata in the study area. This study recorded 8 species during the study period. The highest diversity of odonata was found in site A1. The highest abundance of odonata was recorded at site A2 and A4 and dominated by Ceriagrion coromandelianum and Orthetrum sabina. Neurothemis ramburii had the lowest abund  ance at site A1 and A2, but absent at site A3 and A4. The occurrence of odonate species are lower at site around anthropogenic activity suggests the need to protect the lebak swamp so that such uncommon species will not go into local extinction. Neurothemis ramburii can become potential species to evaluate the rate of disturbed environment.

Lebak swamp in Bukit Baru has been lost largely degraded and lost through reclamation activity. Lebak swamp plays important role as land resource in Bukit Baru, Palembang. The study was sonducted to study the composition of Odonata in lebak swamps in Bukit Baru, Palembang, Indonesia. The transect line (1 km) was used to collect odonata in the study area. This study recorded 8 species during the study period. 8 species were found at Site A1, 6 species at site A2, 3 species at site A3, and 6 species at site A4. The highest diversity of odonata was found in site A1, however the other sites have lower odonata diversity. The highest abundance of odonata was recorded at site A2 and A4 and dominated by Ceriagrion coromandelianum and Orthetrum sabina. Neurothemis ramburii had the lowest abund  ance at site A1 and A2, but absent at site A3 and A4. The occurrence of odonate species are lower at site around anthropogenic activity suggests the need to protect the lebak swamp so that such uncommon species will not go into local extinction. Neurothemis ramburii can become potential species to evaluate the rate of disturbed environment.

Heavy metal in river come mainly from naturally occurring geochemical materials. However, human activities has enhanced concentration of heavy metal such as coal mine in the case of pollution in Lematang River. The high suspended solid loads in the river can remove most soluble metals from the water and trapped them in the bottom sediment. Freshwater molluscs were collected 3 sampling site, Lahat (ST1) as reference site, and polluted rivers of West Merapi (ST2) and East Merapi (ST2). Freshwater molluscs were analysed for the heavy metal contents in tissue. Relationships of the heavy metal in sediment to the heavy metal content in molluscs was performed using SPSS 24. Thiara scabra was the most abundant taxa in sampling area. Concentration of Fe and Mn in sediment has no significant effect on the Fe content in mollusc tissues. Molluscs appeared to more sensitive to higher Mn content. This study did not clearly show molluscs as a bioaccumulator for metal. Nonetheless, Thiara scabra were common, abundant, easily sampled and it is a useful choice as bioindicator in Lematang river for future study.

Pupuk organik cair (POC) dibuat secara alami melalui proses fermentasi dan menghasilkan larutan hasil pembusukan dari bahan-bahan organik yang berasal dari tanaman, kotoran hewan, dan sampah organik. Penelitian ini bertujuan untuk mengetahui pengaruh dan konsentrasi optimun POC buah belimbing wuluh (Averrhoa bilimbi L.) terhadap pertumbuhan sawi hijau (Brassica juncea L.). Penelitian ini menggunakan rancangan acak lengkap (RAL) yang terdiri atas 4 perlakuan dan 6 ulangan. Perlakuan pada penelitian ini yaitu P0 (kontrol), P1 (50 ml/L), P2 (75 ml/L), dan P3 (100 ml/L). Data dianalisis dengan ANOVA satu jalur (one way ANOVA) dilanjutkan dengan uji lanjut Duncan pada taraf signifikan 5%. Hasil penelitian menunjukkan bahwa Pelakuan P3 (100 ml/L) POC buah belimbing wuluh (Averrhoa bilimbi L.) berpengaruh terhadap pertumbuhan tanaman sawi (Brassica juncea L.) pada parameter tertentu yaitu berat basah, tinggi tanaman, jumlah daun, dan berat kering.