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Respon Populasi Asal Cendana (Santalum album L) terhadap Serangan Embun Jelaga Fiani, Ari; Yuliah, Yuliah -; Hadiyan, Yayan
Proceeding Biology Education Conference: Biology, Science, Enviromental, and Learning Vol 14, No 1 (2017): Proceeding Biology Education Conference
Publisher : Universitas Sebelas Maret

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Abstract

Black Mildew attacks have been suspected to disturb the growth of Sandalwood (Santalum album) ex situ conservation in GunungKidul, as this disease can inhibit the process of photo synthesis. The origins of Sandalwood's population collected in 2005 are expected to have variety of resistance to the attack. Research has been undertaken to know the impact of black mildew on two observation period that is in rainy season and dry season. The data were collected with 100% sampling intensity in 4 population of sandalwood from 4 replications. The results showed that the intensity of black mildew in the rainy season ranged from 59.34% (Timor Tengah Utara) to 87.86% (Sumba). In June when the rainfall started to decrease, the intensity of black mildew attacks ranged between 51.34% (Belu) to 72.83% (Sumba). The Sumba population has the lowest resistance compared to Belu and Rote populations. The variation in the severity of black mildew is not related to the origin of the population, but due to leaf age.
The Prediction of Locusta migratoria (Linnaeus, 1758) Outbreak under Climate Change Scenario in Indonesia Saputra, Muhammad Hadi; Sutomo; Pujiono, Eko; Indra Januar, Hedi; Hadiyan, Yayan; Hani, Aditya; Erna Wati Hadi, Etik; Kuswandi, Relawan; Kurniawan, Hery; Humaida, Nida
Media Konservasi Vol. 29 No. 4 (2024): Media Konservasi Vol 29 No 4 September 2024
Publisher : Department of Forest Resources Conservation and Ecotourism - IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/medkon.29.4.583

Abstract

Locusta migratoria (Linnaeus, 1758) is one of the locusts known as important pests of food crops. Outbreaks of this species can cause catastrophic damage to maize, paddy, and many other crops. A species distribution model was used to identify the probability of the locust's current and future potential distribution in the Indonesian archipelago. The study relied on the machine learning method Maximum Entropy (Maxent) Model to forecast the future spread of the species in the Indonesian archipelago and to find the climate variable that influenced the distribution of Locusta migratoria. The results showed an Area Under Curve (AUC) value of 0.956 for the Locusta migratoria model, indicating a highly reliable model. The important variable for the distribution of this species was precipitation, especially during the dry season. A low amount of rainfall increases the possibility of the species existing and being distributed. Maxent prediction models showed the potential distribution in the southern part of the Indonesian archipelago under both middle and worst-case scenarios for 2070. This model can become one of the baselines for early warning systems, targeted monitoring and surveillance, and the use of specific pesticides or biological control agents to prevent or minimize the harm of Locusta migratoria outbreak to agricultural lands in the future.
The Phytosociology of Tree Communities on Two Mounts in Bedugul Highland Tropical Forest, Bali, Indonesia Atmaja, Muhammad Bima; Sutomo; Humaida, Nida; Pujiono, Eko; Saputra, M. Hadi; Sukmawati, Jalma Giring; Hani, Aditya; Iryadi, Rajif; Herningtyas, Wieke; Hadiyan, Yayan; Januar, Hedi Indra; Hidayah, Izhamil
Media Konservasi Vol. 30 No. 2 (2025): Media Konservasi Vol 30 No 2 May 2025
Publisher : Department of Forest Resources Conservation and Ecotourism - IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/medkon.30.2.213

Abstract

The forested regions within the Bedugul highland stand as some of the last remaining tropical mountain rainforests in Bali. However, recent development in Bedugul indicates a surge in mass tourism, posing a threat to its diverse plant life due to increased land-use changes and overpopulation. Hence, this research aimed to ascertain the composition and diversity of tree communities within the Bedugul highland forest, focusing on Mt. Pohen and Mt. Tapak. While Mt. Pohen has a history of disturbances like the establishment of a geothermal power plant and forest fires, Mt. Tapak experiences comparatively less disruption. The methods include species identification, the diversity index calculation, the species composition and abundance, and the similarity analysis between permanent sample plot (PSP) from Mt. Pohen and PSP from Mt. Tapak. The result shows a clear separation in tree species composition and abundance between both PSPs. Some species are only detected at Tapak but absent at Pohen or vice versa. However, Euphorbiaceae is the dominating family in both mounts, as the species are known as pioneer plants that benefit in growth and adaptation to the highland habitat after disturbance. The most abundant species in a one-hectare plot on Mt. Pohen are Crypteronia paniculata and Acronychia trifoliata. While on Mt. Tapak, it appears to be Dendrochnide stimulans. Both mounts are occupied mainly by tree groups with diameters ranging from 10 to 20 cm.
PENDETEKSIAN POTENSI CADANGAN KARBON DI ATAS PERMUKAAN PADA HUTAN MANGROVE DI KUBU RAYA MENGGUNAKAN CITRA ALOS PALSAR Hudaya, Yudi Fatwa; Hartono, Hartono; Murti, Sigit Heru; Hadiyan, Yayan
Jurnal Penginderaan Jauh dan Pengolahan Data Citra Digital Vol. 12 No. 1 (2015)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30536/inderaja.v12i1.3309

Abstract

The need for sufficient forest carbon stock measurement system which encompasses a faster and covering broader geographic area is now growing, one of which is the use of synthetic aperture radar (SAR). The objectives of this study were to demonstrate the advantage of ALOS PALSAR application for carbon quantification in mangroves, which apparently provided better relationship in between the L-band backscatters of ALOS PALSAR and the actual aboveground allometric based forest carbon stock of mangroves, compared with previous studies in other types of forest. i.e in tropics or temperate lowland until mountain forests. The better relationship explained by the coefficient determination (R²) of 62 % based on HH polarization with the equation model of Y = 1647.20 + 6.8288BS_HV + 279.48BS_HV + 2870. While previous studies mentioned the R² were only 16 - 76%. The models obtained subsequently were subjected to total carbon quantification and their distributions were mapped. The quantity of aboveground biomass of mangrove forest in Kubu Raya Regency was (Mega grams) or 5.3 Mt (Mega grams), the quantity of carbon dioxide (CO2) sequestration reached 19 451 Mt (Megagrams) equivalent. The 71,069.21 ha area of mangrove forest has the potential to reduce the rate of GHG (Green House Gas) emissions from forestry sector by 0.76%.
Partisipasi Masyarakat dalam Penyelamatan dan Pengelolaan Sumberdaya Genetik Tanaman Hutan Hadiyan, Yayan; Fiani, Ari
Prosiding SNPBS (Seminar Nasional Pendidikan Biologi dan Saintek) 2018: Prosiding SNPBS (Seminar Nasional Pendidikan Biologi dan Saintek)
Publisher : Universitas Muhammadiyah Surakarta

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Abstract

Masyarakat sekitar hutan adalah salah satu pihak kunci yang sangat penting dalam upaya penyelamatan dan pengelolaan Sumberdaya genetik tanaman hutan (SDGTH). Namun demikian, kesadaran dan akses untuk melakukan hal tersebut memerlukan dorongan dan fasilitasi. Idealnya, hutan menyediakan limpahan sumberdaya genetik, tetapi beberapa fakta menunjukan areal hutan mengalami kerusakan berat karena berbagai tekanan, sehingga ketersediaan sumberdaya genetik menjadi terancam. Otoritas pemerintah tidak bisa sepenuhnya dapat mengendalikan degradasi ini, oleh karena itu partisipasi masayarakat menjadi sangat penting untuk mendukungnya. Plot percobaan telah dilakukan untuk memformulasikan bentuk partisipasi masyarakat dalam penyelamatan SDGTH di Kabupaten Cilacap dan Gunung Kidul sejak tahun 2006. Membangun kesadaran, kelembagaan dan introduksi pendekatan baru dalam konservasi dengan mengaplikasikan management tanaman kehutanan-pertanian (agroforestry) telah diformulasikan untuk menjadi paket partisipasi dan pendekatan yang lebih menarik. Pengalaman dan Pembelajaran tersebut sudah saatnya disebarluaskan.
Strategi Konservasi Sumberdaya Genetik Jenis Tanaman Potensial Mendukung Restorasi Gambut Hadiyan, Yayan; Haryjanto, Liliek
Prosiding SNPBS (Seminar Nasional Pendidikan Biologi dan Saintek) 2018: Prosiding SNPBS (Seminar Nasional Pendidikan Biologi dan Saintek)
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (330.941 KB)

Abstract

Degradasi hutan rawa gambut (peatland) terutama di Pulau Sumatera dan Kalimantan terus meningkat sejak banyak terjadinya penebangan liar, kebakaran hutan dan konversi gambut untuk keperluan pertanian dan industri. Salah satu dampak buruk yang timbul, adalah hilangnya beberapa sumberdaya genetik jenis tanaman baik yang telah diketahui potensinya maupun belum. Rawa gambut menyimpan ratusan jenis tanaman, beberapa tanaman potensial baik komersial maupun untuk keperluan restorasi gambut mulai langka. Pendekatan konservasi SDG tanaman potensial pada lahan gambut dapat dilakukan secara in situ dan ex situ melalui berbagai pertimbangan, ragam bentuk aktivitas dan introduksi teknologi pendukung agar pelaksanaan program konservasi lebih efisien. Program tersebut perlu didesign untuk sekaligus mendukung Prioritas Nasional Restorasi Ekosistem Gambut. Pendekatan kemitraan/sinergitas antara lembaga pemerintah, kalangan swasta dan masyarakat dalam program konservasi SDG sudah menjadi sebuah kebutuhan.