ABSTRAKKondisi kualitas air suatu perairan yang baik sangat penting untuk mendukung kelulushidupan organisme yang hidup di dalamnya. Penentuan status mutu air perlu dilakukan sebagai acuan dalam melakukan pemantauan pencemaran kualitas air. Penelitian ini bertujuan untuk mengkaji status mutu air dan menentukan indeks pencemaran berdasarkan parameter fisika-kimia di perairan Distrik Depapre, Kabupaten Jayapura. Pengambilan sampel kualitas air dilakukan pada bulan Oktober 2017 di lima stasiun penelitian, kemudian hasilnya dibandingkan dengan baku mutu air laut untuk biota laut berdasarkan KEPMEN-LH No. 51 Tahun 2004. Hasil penelitian menunjukkan bahwa parameter yang masih sesuai baku mutu antara lain suhu, salinitas, sulfida dan kecerahan perairan, sedangkan parameter yang telah melampaui baku mutu antara lain pH, ammonia total, nitrat dan fosfat. Berdasarkan hasil perhitungan indeks pencemaran menunjukkan bahwa perairan Distrik Depapre berada dalam kategori tercemar ringan hingga tercemar sedang. ABSTRACTGood water quality is extremely important to support life of organisms. The determination of water quality status was needed as reference to monitor water pollution. This study aimed to assess the status of water quality and determine pollution index based on physical-chemical parameters in the Depapre District waters, Jayapura Regency. Sampling was carried out in October 2017 across five research stations, then the results were compared with water quality standards based on KEPMEN-LH No. 51 Tahun 2004 for marine biotas. The results showed that the parameters in according to the quality standards are temperature, salinity, sulphide and water transparency, while those that have exceeded the quality standards are pH, total ammonia, nitrate and phosphate. Based on the calculation of pollution index indicates that the Depapre District waters was in light pollution to medium categories.

A good water quality is essential to sustaining the life of the organisms. The determination of water quality is needed as a direction to monitoring the water pollution. The purpose of this study is to examine the quality of the water and to determine the water pollution index based on the physicochemical parameters in Mimika waters, Indonesia. The sampling of water quality was carried out in October 2016 at six stations (Moga, Puriri, Inaoga, Keakwa, Atuka and Pomako waters). Then, the results were compared with the standard of sea water quality for biota marine based on the Decree of the Minister of Environment No. 51 year 2004. This study showed that the physicochemical parameters of the waters, such as water turbidity, BOD, NH 3 and heavy metals (Hg, As, Cd, Pb, Cu, Zn, Ni and Cr), are still appropriate to the biota marine in all study stations. However, there is a parameter for which the quality standards were exceed in all locations, including water salinity for coral and seagrass, NO 3 , PO 4 and H 2 S. The result of pollution index calculation at coastal waters Mimika are classified as lightly polluted (Keakwa and Pomako waters), and moderately polluted (Moga, Puriri, Inaoga and Atuka waters) with the pollution index values of 3.51 to 6.95. It is important to notice that the parameters of quality standards which had been exceed such as NO 3 , PO 4 and H 2 S are the environmental parameter for nutrient elements and can trigger eutrophication in the waters.

Biological resources around neighborhood play important roles in the cultural development of the surrounding communities, including the use of plants. Wati (kava, Piper methysticum) is one of the species that has long been used as a traditional medicine and cultivated by Marind tribal community in the lowlands of Merauke, Papua. The aim of this study is to examine the use and domestication of wati plant by Marind tribe in Papua. Results of the study showed that wati plant has long been used by the Marind tribal community as a medicinal plant with high customary value. Each customary event includes wati plant as a complementary requirement for legitimate activities by the Marind tribe. It is the importance of customary values that led the domestication of wati plant done since 60 years ago on a small scale to eventually develop into plant called as "the Marind people's gold". Results of the observation showed that 93.8% of the Marind people have largely recognized wati plant, while 53.3% of the immigrant communities from outside the area recognized it, but only 33.3% knew about its utilization. Although not all indigenous elders cultivate it, they recognize, utilize, and understand the rules of using wati plant in traditional events and as traditional medicine. As traditional medicine, the parts used by Marind people use root (100.0%), stem (96.6%), and leaves (89.7%). For customary events, the most important parts are the whole plant (100.0%), stem (100.0%), leaves (98.3%) and roots (93.1%). Their children even recognize it and know its benefits, but most of them 31.25% only utilize it but are prohibited from participating in its preparation (0.0%). The domestication of this plant is quite unique because it is closed to the public and is still done by a conventional method.

The determination of water quality status was needed as a reference to monitor water pollution. The purpose of this study was to determine the concentration of ammonia, nitrate, and phosphate in Depapre waters, Jayapura Regency. Sampling was carried out in October 2017 across five research stations, then the results were compared with water quality standards based on KEPMEN-LH No. 51 Tahun 2004 for marine biotas. Based on the analysis of water quality in Depapre waters obtained the following results are the ammonia content ranges from 0.8 to 11.6 mg/L, the content of nitrate ranged from 0.009 to 0.54 mg/L, and the phosphate content ranged from 0.016 to 1.19 mg/L. These results indicate that the ammonia, nitrate and phosphate concentration in Depapre Waters have exceeded the water quality standard. The concentration of ammonia, nitrate, and phosphate is high enough and endanger the lives of marine biotas.

Penelitian ini dilaksanakan pada bulan Januari – Juni 2009, pada masyarakat Kampung Nansfori Distrik Supiori Utara Kabupaten Supiori. Tujuan dari penelitian ini adalah untuk mengetahui jenis tumbuhan obat yang dimanfaatkan dan cara pengolahannya. Metode yang digunakan dalam penelitian ini adalah metode dengan pendekatan secara emik dan etik dengan teknik observasi, wawancara, metode kepustakaan dan metode dokumentasi. Hasil yang diperoleh dianalisa secara kualitatif. Jenis tumbuhan obat yang ditemukan sebanyak 48 jenis tumbuhan obat dari 32 famili. Bagian tumbuhan yang digunakan sebagai obat adalah : daun (52,08 %), buah (6,25 %), biji (2,08%) dan batang (4,17 %), kulit batang (4,17 %), getah (4,17 %), umbi (2,08 %), akar (2,08 %) dan lebih dari satu bagian tumbuhan yang digunakan (22,92 %). Pengolahan tumbuhan obat menggunakan cara yang masih sederhana (direbus dan dirauh), bahkan ada yang tanpa diolah (langsung digunakan), kehigienisan dalam pengolahan juga sangat diperhatikan.namun dalam meramu tumbuhan obat masyarakat tersebut tidak menggunakan takaran.Terdapat 20 jenis tumbuhan obat dari 18 famili yang terbukti secara ilmiah memilki kandungan kimia yang dapat mengobati beberapa jenis penyakit. Kendala-kendala yang ditemukan antara lain tumbuhan yang digunakan sebagai obat belum dibudidayakan dan kurangnya ketertarikan kaum muda pada obat tradisional sehingga penurunan pengetahuan obat tradisional kepada generasi muda tidak berjalan lancar. Key words: medicinal plants, Nansfori Village, Supiori District, Papua.