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"Population of Flindersia pimenteliana (Maple Silkwood) in Indonesian Papua and Papua New Guinea is severely fragmented and experiencing a continuing decline due to habitat destruction and illegal logging. This species is very susceptible to environmental changes and at greater risk of extinction due to its small and fragmented geographic ranges and low abundance. Using maximum entropy (MaxEnt) method, the present study predicted the impact of climate change on the distribution of the species across its native distribution area. Elevation and 19 bioclimatic variables commonly used in species distribution modeling were used as predictors. Â The prediction model of the current potential distribution identified a total area of 156,214 km2 in Indonesian Papua and Papua New Guinea (18% of total land area) as suitable habitat for F. pimenteliana. Elevation and precipitation of the wettest, coldest and warmest quarters contributed most to the model. Based on the average of HadGEM2-ES and MIROC-ESM models, potential distribution projections under RCP8.5 scenario suggested a habitat gain of 16% for 2050 and 8% for 2070 in the species distribution. Whereas under RCP4.5, an average habitat gain of 7% was predicted for both 2050 and 2070. The newly suitable habitats were predicted to be found mainly in Southern and Western Highland of Papua New Guinea. Protection of these areas from habitat destruction and land use change is needed to assist F. pimenteliana find the most suitable climate for its survival."

"ABSTRAKLahan basah buatan merupakan salah satu teknologi alternatif pengolahan air limbah dengan kriteria biaya yang ekonomis dan mudah diaplikasikan. Namun, pada sistem lahan basah buatan konvensional, proses degradasi polutan oleh mikroorganisme dari air limbah seringkali terbatas pada ketersediaan oksigen terlarut. Salah satu solusi yang dapat diterapkan untuk mengatasi permasalahan tersebut adalah dengan modifikasi lahan basah buatan melalui sistem aerasi. Tujuan dari penelitian ini adalah untuk menganalisis dan membandingkan efisiensi penyisihan polutan dari air limbah kantin dengan menggunakan lahan basah buatan tanpa sistem aerasi dan dengan sistem aerasi. Penelitian ini menerapkan lahan basah buatan aliran horizontal bawah permukaan secara batch dengan menggunakan tanaman Canna indica dan kombinasi media berupa kerikil dan pasir. Pada lahan basah buatan dengan sistem aerasi, dipasang aerator di bagian inlet dan outlet reaktor yang dioperasikan selama 4 jam/hari. Hasil penelitian menunjukkan bahwa rata-rata efisiensi penyisihan polutan dengan lahan basah buatan tanpa sistem aerasi dan dengan sistem aerasi masing-masing adalah sebesar 83,02 dan 94,62 untuk COD, 90,10 dan 97,84 untuk TSS, 60,74 dan 84,17 untuk amonia, 32,26 dan 33,06 untuk minyak lemak, serta 89,16 dan 92,24 untuk MBAS. Dari hasil tersebut, maka lahan basah buatan dengan modifikasi berupa sistem aerasi dapat menyisihkan polutan pada air limbah kantin secara lebih optimal jika dibandingkan dengan lahan basah buatan tanpa sistem aerasi.

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ABSTRACTConstructed wetlands is a simple and cost effective technology alternative for wastewater treatment. However, oxygen supply in conventional constructed wetlands cannot fully meet the requirement for the process of wastewater pollutants degradation by microorganisms. Artificial aeration system is proposed as a solution to enhance the oxygen availability in constructed wetland beds. The aim of this study is to analyze and compare removal rate of pollutant in canteen wastewater by conventional constructed wetland and modified constructed wetland with artificial aeration. This study applied horizontal subsurface flow constructed wetlands with batch system planted with Canna indica and the types media used are gravel and sand. In modified constructed wetland, aerators located in the bed inlet and outlet which are operated for 4 hours day. The results shows that the average removal rate with conventional and modified constructed wetland are respectively 83,02 and 94,62 for COD, 90,10 and 97,84 for TSS, 60,74 and 84,17 for ammonia, 32,26 and 33,06 for grease, also 89,16 and 92,24 for MBAS. According to the results, modified constructed wetland with artificial aeration is more efficient to remove pollutants in canteen wastewater than conventional constructed wetland without artificial aeration. "

"The broad goal of this book is to introduce the concept of expert knowledge and examine its role in landscape ecological applications. This text incorporates the collective experience and knowledge of over 35 researchers in landscape ecology representing a diverse range of disciplinary subject areas and geographic locations. "