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All Journal Wana Lstari
Roni Sipayung
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Agriculture, Biological Sciences & Forestry

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Keanekaragaman Vegetasi Mangrove di Kawasan Hutan Mangrove Taman Nasional Karimunjawa, Kabupaten Jepara, Jawa Tengah Roni Sipayung
Wana Lestari Vol 5 No 1 (2023): Wana Lestari
Publisher : Program Studi Kehutanan, Fakultas Pertanian, Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35508/wanalestari.v7i01.11760

Abstract

This study aims to determine the density of mangrove vegetation found in mangrove forest areas. This research was conducted in the Mangrove Forest Area of ​​Karimunjawa National Park, Jepara Regency, Central Java. Retrieval of research data using a systematic path with a total of 75 plots in the entire Mangrove Forest Area of ​​Karimunjawa National Park with nested sampling method. Using this method, the number of species and vegetation density values ​​were obtained in the form of seedling density, sapling density, and tree density. Data analysis used quantitative description in the form of a graph of mangrove vegetation density. The results showed that the density of vegetation in the Mangrove Area of ​​Karimunjawa National Park, Jepara Regency, Central Java was classified as moderate. The vegetation density values ​​for block A at the growth rate of seedlings, saplings and trees were 13103.45 individuals/ha, 2096.55 individuals/ha and 331.03 individuals/ha while the density of mangrove vegetation for block B at the growth rate of seedlings, saplings, and trees respectively, namely 23478.26 individuals/ha, 3756.52 individuals/ha, and 217.39 individuals/ha.The diversity index value in block A was 1.797 while in block B it was 2.110.
Kajian Kualitas Perairan Hutan Mangrove di Oesapa Barat, Kelapa Lima, Kota Kupang, Nusa Tenggara Timur Roni Sipayung
Wana Lestari Vol 5 No 2 (2023): Wana Lestari
Publisher : Program Studi Kehutanan, Fakultas Pertanian, Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35508/wanalestari.v5i02.13876

Abstract

This research aims to determine the quality of mangrove forest waters located in tourist areas and close to residential areas. This research was conducted in the West Oesapa Mangrove Forest Ecotourism Area, Kupang City, East Nusa Tenggara. Research data was collected using a systematic route in the West Oesapa Mangrove Forest Ecotourism Area using the method of measuring and observing water quality using a refractometer, digital pH meter, TDS meter, thermometer and stick. By using these tools, water quality parameters such as salinity, degree of acidity, clarity, substrate thickness and temperature of mangrove forest waters are obtained. Data analysis uses quantitative description in the form of graphs of water quality parameters. The average values ​​of the parameters measured were: salinity of 29.11 per mile, degree of acidity of 4.72, total dissolved solid of 558.66 mg/l, temperature of 270C, and mud thickness of 30 cm. The research results show that the water quality in the West Oesapa Mangrove Forest Ecotourism Area, Kupang City, East Nusa Tenggara is considered polluted. The condition of pH, temperature and total dissolved solid are not good for aquatic biota and mangrove vegetation.
Pengaruh Konsentrasi Zat Giberelin (GA3) Terhadap Perkecambahan Biji Cendana (Santalum album Linn.) Angriani Noventa Tefa; Wilhelmina Seran; Astin E. Mau; Roni Sipayung
Wana Lestari Vol 7 No 1 (2025): Wana Lestari
Publisher : Program Studi Kehutanan, Fakultas Pertanian, Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35508/wanalestari.v7i01.19873

Abstract

There are two factor s that affect the success of sandalwood plant breeding, namely, the presence of host plants needed by sandalwood plants and the treatment of sandalwood seeds. This study aims to determine how the concentration of gibberellin (GA3) on sandalwood seed germination and which concentration treatment has the most effect on sandalwood seed germination. The method used in this study was a Complete Randomized Design (RAL) with gibberellin concentration treatment (GA3) consisting of A0 = 0% (Immersion in aquades (control)), A1 = 70% (1,000 mL aquades + 0.70 grams (GA3)), A2 = 75% (1,000 mL aquades + 0.75 grams (GA3)), A3 = 80% (1,000 mL aquades + 0.80 grams (GA3)), A4 = 85% (1,000 mL aquades + 0.85 grams (GA3)), A5 = 90% (1,000 mL aquades + 0.90 grams (GA3)). The results showed that the variation in the concentration of gibberellins (GA3) 70%, 75%, 80%, 85% and 90% in sandalwood plants had a significant effect on all parameters and the use of GA3 with A5 = 90% treatment (1,000 mL aquades +0.90 grams (GA3)) gave the best value and had a real effect on four parameters, namely germination rate with an average of 36%, germination rate of 44% (12MST), wet weight of 0.31 grams, and dry weight of 0.13 grams.
Co-Authors Angriani Noventa Tefa Astin E. Mau Wilhelmina Seran