Mangrove forest in North Central Timor Regency is dominated by Rhizophora sp. The highest number was found in Tuamese Village, namely Rhizophora apiculata and Rhizophora mucronata. The biomass productivity in mangrove forests varies according to age, dominant species, and locality. It shows differences in carbon uptake and storage at the level, type, and place of growth. This study aimed to analyze the carbon content and carbon uptake of R. apiculata and R. mucronata at the stake level to the tree level in two plots with the size of 2,000 m2 each. The method used was allometric equations, while the power discrimination test used an independent sample t-test. The result showed that R. apiculata and R. mucronata had the same potential in producing biomass and necromass as well as in storing and absorbing carbon. The total biomass was 77.21 Mg/ha, which can absorb and store carbon, respectively, 141.68 Mg/ha and 36.61 Mg/ha. This research data provides an overview of the potential of biomass in meeting carbon trading standards as an effort to succeed in mangrove conservation in Tuamese Village. Keywords: Biomass, Carbon uptake, Rhizophora apiculata, Rhizophora mucronata

Air merupakan komponen lingkungan yang penting bagi kehidupan di muka bumi. Oleh karena itu kebutuhan akan air harus diperhatikan baik kualitas maupun kuantitasnya, tetapi realita yang terjadi banyak masyarakat menggunakan air yang kualitasnya dibawah standar baku mutu kualitas air menurut Peraturan Menteri Kesehatan Republik Indonesia Nomor 492Menkes/Per/IV/2010. Penelitian ini bertujuanuntuk mengetahui karateristik fisik, kimia dan mikrobiologi serta untuk mengetahui nilai konsentrasi parameter fisik, kimia dan mikrobiologi air sumur di Kefamenanu sama dengan nilai ambang batas yang ditetapkan permenkes nomor 492.Teknik pengambilan sampel diambil secara acak pada empat lokasi yaitu  air sumur area Rumah Sakit, Tulip, Maubeli dan Sasi. Berdasarkan hasil analisis laboratorium Dinas Kesehatan Kefamenanu diperoleh hasil parameter fisik yang meliputi suhu, bau, rasa dan warna keempat air sumur tersebut memenuhi syarat baku mutu kualitas air bersih. Parameter kimia meliputi besi, mangan, timbal dan pH diperoleh hasil air sumur area rumah sakit besi(Fe)=0,05 mg/l, mangan (Mn)= 0,4 mg/l, timbal (Pb)= 0 mg/l dan pH=8, air sumur area Tulip besi= 0,2 mg/l, mangan= 0,7 mg/l, timbal= 0 mg/l dan pH=8, air sumur areaMaubeli besi= 0,5 mg/l, mangan= 0,1 mg/l, timbal= 0 mg/l dan pH=8 serta pada air sumur area Sasi besi= 0,5 mg/l, mangan= 0 mg/l, timbal= 0 mg/l dan pH= 8 dan parameter mikrobiologi (coliform) di area rumah sakit= 1898, area tulip= 438, area Maubeli= 33 dan untuk area Sasi= 13 dan bakteri E. coli area rumah sakit=1898, area tulip=38, area Maubeli=26 dan area Sasi= 13 dapat disimpulkan bahwa air sumur area rumah sakit dan air sumur area tulip tidak memenuhi standar baku mutu kualitas air bersih sesuai dengan peraturan Permenkes No: 492/Menkes/Per /IV/2010.

Rice field ecosystem is artificial ecosystem. Insects as one of the rice field eccosystem components play a pivotal role in the food chain which is as herbivore, predator and detrivore. This research aims to identify insects in the rice field at Laleten Vilagge. Also potential insects, and factors affecting the insects' activities were investigated. The research was conducted in Malaka Regency, East Nusa Tenggara during March, 2017. The research method was Trap Method using net and lamp. Biological wealth equation was used to assess the potential insects. The results shows that insects in the rice field of Laleten were grouped in three based on their role as predator, herbivore and detrivore. Insects found in the net trap were 8 species, 7 families, and 6 ordos. Insects found in the lamp trap was 1 species, 1 family and 1 ordo. From all the insects, it was identified insect diversity values as followed; 54.26 for predators, 35.12 for herbivore and 30.79 for detrivore. The average of biodiversity value (R) was 120, 17.

Lontar (Borassus sundaicus,Beck) adalah jenis palma yang tumbuh di daerah kering. Di Indonesia, lontar banyak ditemukan di Nusa Tenggara Timur. Produk utama lontar adalah nira dari sadapan bunga, dapat diminum langsung atau diolah jadi gula. Nira yang dijadikan sumberdaya unggulan daerah ini perlu dikembangkan, sebab memberi nilai tambah terhadap pendapatan perkapita dan kesejahteraan.Pemanfaatan nira lontar sebagai gula merah cetak di Kabupaten Timor Tengah Utara (TTU) masih dominan dilakukan oleh warga etnis Sabu dan Rote. Sedangkan masyarakat lokal, suku Dawan dominan memanfaatkan nira lontar untuk minuman beralkohol (sopi). Di Kabupaten TTU, Kota Kefamenanu Kelurahan Maubeli terdapat pohon lontar yang belum dimanfaatkan. Terutama  yang memproduksi nira lontar menjadi gula merah cetak. Alat, bahan seadanya dengan proses pembuatan tanpa melalui tahapan penyaringan secara baik. Sehingga penampilan gula merahnya kurang menarik. Dampaknya harga pasaran gula di bawah harga pasaran gula merah dari daerah lain yang sudah olah secara higienis.Tujuan kegiatan pengabdian ini adalah pemanfaatan nira lontar sebagai gula merah cetak melalui pelatihan dan pendampingan serta perbaikan tahapan pengolahan secara higienis, dengan perlakuan media kemasan yang menarik untuk peningkatan harga dan pendapatan petani. Hasil gula merah cetak petani mulai diterima dipasaran toko maupun mini market di kota Kefamenanu. Dampak yang dirasakan petani yakni pendapatan meningkat.

This study aims to identify the morphology response of white corn (Zea mays L) shoots explant on in vitro drought stress selection using Polyethylene glycol (PEG). The study was conducted at the Biology Education Laboratory, University of Timor using a Completely Randomized Design (CRD) with three treatment concentrations of PEG, namely PEG 0 gr/L (control), PEG 5 gr/L, and 15 gr/L. The explants grown on Murashige & Skoog (MS) basal media with PEG according to the treatment concentration. Parameters observed were root length, shoot height and plant biomass to see plant response to drought stress. Data were analyzed using SPSS and further test using DMRT. The results showed that the concentration of PEG gradually could affect plant growth, especially shoot height. PEG concentration of 5 gr/ml and 15 gr/ml was the highest shoot growth (2,625 cm) when compared to PEG 0 gr/L (1.47) which indicated that explants could still grow under drought stress conditions. However, both treatments showed no effect of PEG on root length and biomass which could indicate growth inhibition in the given selection. Based on the results it can be concluded that PEG selection can affect the growth rate of white corn shoots and growth inhibition.