Judul: Pengaruh Curah Hujan dan Angin terhadap Fluktuasi Konsentrasi NO2 di Wilayah Suburban dan Rural
Abstrak: Bogor termasuk daerah penyangga ibukota yang beragam tipe wilayahnya mencakup suburban dan rural. Kondisi tersebut menunjukan variasi aktivitas antropogenik yang mengemisikan pencemar udara, salah satunya nitrogen dioksida (NO2). Penelitian ini bertujuan menganalisis pengaruh curah hujan dan angin terhadap fluktuasi NO2 di daerah suburban (Baranangsiang) dan rural (Cibeureum). Prosedur menggunakan analisis deskriptif dan statistik untuk melihat karakteristik fluktuasi serta menghubungkan korelasi antara konsentrasi NO2 dengan curah hujan dan angin. Konsentrasi NO2 di wilayah suburban lebih tinggi daripada wilayah rural. Rata-rata konsentrasi NO2 tahunan di wilayah suburban tahun 2019, 2020, dan 2021 sebesar 28,54 μg/m³, 16,12 μg/m³, dan 14,46 μg/m³. Rata-rata konsentrasi NO2 tahunan di wilayah rural tahun 2019, 2020, dan 2021 sebesar 11,67 μg/m³, 11,97 μg/m³, dan 3,54 μg/m³. Rata-rata konsentrasi NO2 tersebut berada dibawah nilai batas baku mutu udara ambien (50 μg/m³). Nilai koefisien korelasi curah hujan sebesar 7,5% sedangkan untuk kecepatan angin sebesar 50,2%. Hasil analisis korelasi dan regresi linier berganda secara keseluruhan menunjukkan curah hujan dan kecepatan angin dapat memengaruhi konsentrasi NO2, meskipun pengaruhnya kecil tetapi signifikan, sesuai hasil uji F < 0,05.
Keyword: NO2, rainfall, suburban, urban, wind

Judul: The Analysis if Rainfall Effect on Carbon Monoxide (CO) and
Nitrogen Oxide (NOx) Concentrations in the Puncak Bogor Area
Abstrak: Karbon monoksida (CO) dan Nitrogen Oksida (NOx) merupakan polutan yang sangat berbahaya bagi kesehatan manusia. Fluktuasi konsentrasi CO dan NOx tidak hanya dipengaruhi oleh aktivitas antropogenik tetapi faktor meteorologi seperti curah hujan. Penelitian ini bertujuan menganalisis pengaruh curah hujan terhadap konsentrasi CO dan NOx, dengan studi kasus Puncak Bogor tahun 2019. Data yang digunakan berupa data sekunder curah hujan dan konsentrasi CO dan NOx diperoleh dari BMKG Citeko bekerjasama dengan NIES Jepang. Analisis yang dilakukan adalah analisis data bulanan, harian, dan per menit. Hasil analisis data bulanan, curah hujan berpengaruh signifikan terhadap penurunan konsentrasi CO (r = -0,725; p-value, Carbon monoxide (CO) and Nitrogen Oxide (NOx) were pollutants that were very dangerous for human health. Fluctuations in CO and NOx concentrations are not only influenced by anthropogenic activities but meteorological factors such as rainfall. This research aims to analyze the effect of rainfall on CO and NOx concentrations, with a case study in Puncak Bogor in 2019. The data used in this study were rainfall, and CO and NOx concentrations secondary data obtained from BMKG Citeko in collaboration with NIES Japan. The data were analyzed in different time interval such as monthly, daily and minute. The results of monthly data analysis showed that rainfall has a significant effect on reducing CO concentrations (r = -0.725; p-value < 0.05), in contrast there was no significant effect on NOx concentrations (r = -0.531; p-value > 0.05). The results of daily data analysis showed that rainfall has an effect on reducing CO and NOx concentrations with a low level of correlation (r CO = -0.16 and r NOx = -0.17). The results of analysis of data per minute in certain periods of the wet month and dry season showed that rainfall has a significant effect on reducing CO and NOx concentrations, especially in the wet season. On the other hand, in the dry season, rainfall had a less significant effect on reducing CO and NOx concentrations. Based on analysis over the same time period, the average concentrations of CO and NOx were smaller when rain occurred than there were no rain occured. This showed that rainfall has an effect on reducing the concentration of CO and NOx pollutants in the Puncak Bogor area.
Keyword: curah hujan, Kualitas Udara, karbon monoksida, nitrogen oksida

Judul: Posisi Filogenetik Kura-Kura Carettochelys Insculpta  (Reptillia: Testudinata)
Abstrak: Carettochelys insculpta is an endemic freshwater turtle of southern Papua and northern Australia. Phylogenetic position of this turtle is remain unresolved until now. Most of the research conducted show close relationships of C. insculpta and members of Trionychidae family. However, some of the research show distance between C. insculpta and members of Trionychidae family. This research is conducted to analyze phylogenetic relationship between C. insculpta and other members of Testudinata using 12S rRNA, 16S rRNA, and both gene as markers. DNA samples were obtained from three different organisms of C. insculpta. Two species used as outgroups were Alligator mississippiensis and Iguana iguana. Phylogenetic analysis was carried out using Neighbor-Joining method with Felsenstein 1981 (F81) modeltest. A polytomy tree of Testudinata was produced by using 12S rRNA gene. However, analysis using 16S rRNA and both genes as markers confirmed that C. insculpta was located between the Chelonidae and the Trionychidae family.
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