Judul: Analisis dan Pemodelan Dampak ENSO dan IOD Terhadap Hotspot di Papua
Abstrak: Curah hujan dan anomalinya merupakan salah satu pemicu kemunculan hotspot. ENSO dan IOD memiliki dampak pada peningkatan dan penurunan curah hujan di Indonesia. Penelitian ini memodelkan dampak IOD dan ENSO terhadap hotspot di Papua. Dampak tersebut dimodelkan menggunakan optimasi tanpa kendala dengan fungsi tujuan meningkatkan korelasi antara data iklim (dryspell dan anomali curah hujan) dan data hotspot dan variabel keputusan adalah koefisien model. Koefisien merepresentasikan dampak IOD, ENSO, dan kombinasi keduanya terhadap hotspot. Pembobotan dryspell dan anomali curah hujan dengan ENSO dan IOD memberikan peningkatan korelasi terhadap hotspot dibanding sebelum diboboti. Analisis HCM juga menunjukkan pembobotan tersebut memberikan penguatan asosiasi secara spasial. ENSO menjadi indikator yang lebih besar dampaknya terhadap hotspot di Papua dibanding IOD., Total precipitation dan its anomalies are the triggers for the emergence of hotspot. ENSO and IOD have impacts on increasing and decreasing total precipitation in Indonesia. This study modeled the impact of IOD and ENSO on hotspot in Papua. The impact is modeled using unconstraint optimization with the objective function maximizing the correlation between climate data (dryspell and precipitation anomaly) and hotspot data and the decision variable is the model coefficient. The coefficients represent the impact of IOD, ENSO, and combination of them on hotspots. Weighting with ENSO and IOD on dryspell and precipitation anomaly improves correlation to hotspots compared before weighting. HCM analysis also showed the weighting improved spatial associations. ENSO is an indicator of its greater impact on hotspot in Papua than IOD.
Keyword: anomali curah hujan, dryspell, ENSO, IOD, HCM, hotspot, hujan

Judul: Hotspot and Rainfall Analysis Period in Mappi District, South Papua Province
Abstrak: Kabupaten Mappi merupakan salah satu wilayah di Provinsi Papua Selatan yang memiliki jumlah hotspot tertinggi setelah Merauke dalam satu dekade terakhir. Penelitian bertujuan menganalisis pola sebaran hotspot dan keterkaitannya dengan curah hujan pada periode 2012-2021 di Kabupaten Mappi, Provinsi Papua Selatan. Sumber yang digunakan dalam penelitian adalah data hotspot dari citra satelit MODIS Terra/Aqua dan data curah hujan dari NASA LaRC Power yang dianalisis menggunakan analisis deskriptif dan analisis regresi. Hasil penelitian menunjukkan adanya fluktuatif jumlah hotspot pada rentang tahun 2012-2021 dan puncak hotspot terjadi pada tahun 2015. Jumlah hotspot pada rentang tahun tersebut adalah 3879 titik. Sebanyak 1415 titik (36,48%) tersebar pada lahan gambut dan 2464 titik (63,52%) pada lahan mineral. Hasil analisis regresi menunjukkan bahwa hubungan antara hotspot dengan curah hujan memiliki nilai p-value 0,006, artinya p-value < 0,05 menunjukkan korelasi keduanya berpengaruh secara signifikan., Mappi Regency is one of the areas in South Papua Province which has the highest number of hotspots after Merauke in the last decade. The research aims to analyze the pattern of hotspot distribution and its relationship to rainfall in the 2012-2021 period in Mappi District, South Papua Province. The sources used in this study were hotspot data from the MODIS Terra/Aqua satellite imagery and rainfall data from NASA LaRC Power which were analyzed using descriptive analysis and regression analysis. The results showed that there was a fluctuation in the number of hotspots in the 2012-2021 range and the peak of hotspots occurred in 2015. The number of hotspots in that year range was 3879 points. A total of 1415 points (36,48%) are spread on peat land and 2464 points (63,52%) on mineral land. The results of the regression analysis show that the relationship between hotspots and rainfall has a p-value of 0,006, meaning that the p-value is < 0,05 which indicates that the correlation between the two has a significant effect.
Keyword: forest and land fires, hotspot, Mappi District, rainfall

Judul: Essential Fatty Acid Requirements of Catfish (Clarias batrachus Linn.) for Broodstock Development
Abstrak: This experiment was conducted to determine essential fatty acid requirements of catfish (Clarias batrachus Linn.) for broodstock development. The basic diet supplied to the test fish had protein and fat content 46.51 - 48.29% and 5.8 - 5.96% respectively. The five test diets differed in the essential fatty acid (EFA) level. Diet A contained 0.21% (36-fatty acid and 0.03% S3-fatty acid; diet B 0.67% d6-fatty acid and 2.09%&3-fatty acid; diet C 2.24KU6-fatty acid and 0.07%&3-fatty acid; diet 0 1.85%(;36-fatty acid and 0.56% a3-fatty acid; diet E 0.26% a6 fatty acid and 1.68% d3-fatty acid. Most of US-fatty acid in diet B and D were 1$:3 (33, on the other hand those in diet E were 20:s c33 and 22:6 W3.
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