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All Journal ZOO INDONESIA Jurnal Biologi Tropis Journal of Comprehensive Science Jurnal KALANDRA Biosaintifika: Journal of Biology & Biology Education
Sri Catur Setyawatiningsih
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Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Civil Engineering, Building, Construction & Architecture Computer Science & IT Economics, Econometrics & Finance Education Electrical & Electronics Engineering Immunology & microbiology Languange, Linguistic, Communication & Media Library & Information Science Other

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Journal : Jurnal Biologi Tropis

 1 
Structure of Mangrove Vegetation Patterns Based on Salinity Differences in Jangkang River, Bengkalis Island, Riau Ria Saputra, Eki; Setyawatiningsih, Sri Catur; Mahatma, Radith
Jurnal Biologi Tropis Vol. 24 No. 4 (2024): Oktober - Desember
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v24i4.7767

Abstract

Mangroves in Sungai Jangkang, Bengkalis Island, are affected by anthropogenic activities and environmental factors, with salinity being the most influential environmental factor. This study aims to describe the structure of mangrove vegetation patterns based on variations in salinity. The research was conducted in the Jangkang River, Bengkalis Island, in March 2024. Representative areas of three salinity zones along upstream, midstream, and downstream were selected. The species present were assessed for density, frequency, dominance, and importance index. The salinity in the upstream section was 5 ‰, in the midstream 8 ‰, and in the downstream 18 ‰. Four species from four families were found in the upstream section, three species from three families in the midstream, and eight species from seven families in the downstream section. Rhizophora apiculata was the most dominant species and had the highest importance index (INP) in the Jangkang River. Mangrove species diversity in the upstream and midstream sections of the Jangkang River was classified as low (H' < 1), while the downstream section had moderate diversity (1 < H' < 3).
Tapanuli Orangutan Feeding (Pongo tapanuliensis) In Sitandiang Hamlet, Bulu Mario Village, Sipirok District, South Tapanuli Sinaga, Adinda Patricia Adelina; Setyawatiningsih, Sri Catur
Jurnal Biologi Tropis Vol. 25 No. 1 (2025): Januari - Maret
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v25i1.8243

Abstract

The tapanuli orangutan (Pongo tapanuliensis) is an endemic orangutan species found exclusively in the Batang Toru forest ecosystem, North Sumatra. Studying their natural diet is crucial to supporting conservation efforts for this critically endangered species. This research was conducted in Sitandiang Hamlet, Bulu Mario Village, Sipirok Sub-district, South Tapanuli Regency, with the aim of inventorying the types of food consumed by tapanuli orangutan and analyzing their feeding patterns in their natural habitat. The methods used included field surveys, interviews with local communities, and documentation. The findings revealed that tapanuli orangutan utilize a variety of plant resources, such as fruits, leaves, flowers, and tree bark. Their feeding patterns show a reliance on the availability of seasonal fruits, with an adaptation to consuming vegetative plant parts during off-fruit seasons. Local community knowledge about orangutan food sources also plays an important role in preserving their habitat. This study provides insights into ecosystem-based conservation management and emphasizes the importance of strengthening collaboration with local communities to support the sustainability of tapanuli orangutan populations in this region.
Co-Authors Ahmad Muhammad Al Mufid, M.Zaki Arief Boediono Asmoro Dasih, Tri Anita Eki Ria Saputra Eki Susanto EVY AYU ARIDA Hanifah, Nur Addini OSAMU KOZAN, OSAMU Pangabean, Alexander Parmonangan Radith Mahatma Ria Saputra, Eki Sinaga, Adinda Patricia Adelina Siti Fatonah Syah Fitri, Suci Nur Aini TARUNI SRI PRAWAST MIEN KAOMINI ANY ARYANI DEDY DURYADI SOLIHIN Wasmen Manalu Yulminarti