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All Journal VOGELKOP: Jurnal Biologi Jurnal Natural Igya ser hanjop: Jurnal Pembangunan Berkelanjutan
Agustinus Kilmaskossu
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry Environmental Science Immunology & microbiology Mathematics Physics Veterinary

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Journal : Igya ser hanjop: Jurnal Pembangunan Berkelanjutan

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Odonata Diversity Around the Arfak Mountains, West Papua Keliopas Krey; Ade Rahayu Pattiran; Agustinus Kilmaskossu; Yance de Fretes
Igya ser hanjop: Jurnal Pembangunan Berkelanjutan Vol 2 No 2 (2020)
Publisher : Badan Penelitian dan Pengembangan Provinsi Papua Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47039/ish.2.2020.103-113

Abstract

West Papua is known to harbor high biodiversity and endemicity. Odonata is one taxon that has a high diversity and endemism and plays an important role as an environmental bioindicator. As with many other taxa, field research on the diversity, distribution, and habitat of dragonflies is still very limited in West Papua. Yet, its habitats are under threat due to forest and land conversion for infrastructure developments. This study was designed to document the diversity of Odonata around the Arfak Mountains; especially in Uyehegbrik Village (Prafi District), Hijou Village (Neney District) and Anggra Village (Minyambou District). Data was collected using the purposive sampling technique. The Shannon Diversity Index and t-test were used to calculate and compare species diversity at each research location; and Sorensen Index was used to analyze the similarity of species in each location. About 21 species from 7 families were recorded during this study, 10 of which species are likely new. Our main conclusions include: the Shannon Weaner Index (H’) at the study sites 1.43-1.89 indicates moderate diversity; standing water is the main habitat of dragonflies; the temperature has positive, but weak correlation with species diversity and species abundance. Discovery of new species indicates that this area remains understudied.
Biomassa dan Estimasi Karbon Lamun Cymodocea rotundata di Pantai Rendani, Kabupaten Manokwari Sisilia Mudarehi; Agatha C. Maturbongs; Paskalina Th. Lefaan; Maria .J. Sadsoeitoeboen; Agustinus Kilmaskossu; Fajar R.D.N Sianipar; Emmanuel Manangkalangi; Johanis P. Kilmaskossu
Igya ser hanjop: Jurnal Pembangunan Berkelanjutan Vol 5 No 1 (2023)
Publisher : Badan Penelitian dan Pengembangan Provinsi Papua Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47039/ish.5.2022.1-11

Abstract

Seagrass has a very important role in reducing CO2 emissions by binding carbon. Therefore, this study aims to describe biomass and estimate carbon storage of seagrass Cymodocea rotundata in Rendani Beach, Manokwari Regency, West Papua. The method used is purposive sampling using three transect lines and 30 squares measuring 30 cm x 30 cm. Biomass measurements were carried out on all squares of observations while for carbon content analysis was carried out on three squares in each transect. Carbon analysis was performed using the ashing method or Loss on Ignition. The results showed that the density of C. rotundata ranged from 44.44 - 4877.78 stands/m² and the dry biomass ranged from 13.33 - 873.33 gbk C/m². The results of the analysis showed the relationship between density and dry biomass of C. rotundata following the equation B = 196.13 + 1.6221K. Carbon estimates for this species range from 65.07 - 170.27 gbk C/m². Seagrass vegetation has an important role in storing carbon, however its presence in coastal waters has experienced many disturbances as a result of anthropogenic activities so that conservation efforts need to be made. Keywords: Cymodocea rotundata, density, biomass, ashing method, carbon storage.
Co-Authors Ade Rahayu Pattiran Agatha C. Maturbongs Emmanuel Manangkalangi Fajar R.D.N Sianipar Johanis P. Kilmaskossu Keliopas Krey Maria .J. Sadsoeitoeboen Marice Nella Vegi Molle Paskalina Theresia Lefaan Sisilia Mudarehi Ursula Paula Maker Yance de Fretes