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All Journal MANAJEMEN HUTAN TROPIKA Journal of Tropical Forest Management Jurnal Ilmu dan Teknologi Kelautan Tropis Indonesian Journal of Geography ILMU KELAUTAN: Indonesian Journal of Marine Sciences Jurnal Ilmu Lingkungan BIOTROPIA - The Southeast Asian Journal of Tropical Biology Biota: Jurnal Ilmiah Ilmu-Ilmu Hayati Jurnal Penelitian Hutan Tanaman JURNAL ANALISIS KEBIJAKAN KEHUTANAN Jurnal Kelautan : Indonesian Journal of Marine Science and Technology Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Ecogreen agriTECH Jurnal Pengabdian Kepada Masyarakat (Indonesian Journal of Community Engagement) Jurnal Penelitian Pendidikan IPA (JPPIPA) PROSIDING SEMINAR NASIONAL Jurnal Penelitian Kehutanan FALOAK Jurnal Penelitian Pengelolaan Daerah Aliran Sungai PERENNIAL Journal of Sylva Indonesiana Jurnal Hutan Pulau-Pulau Kecil : Jurnal Ilmu-Ilmu Kehutanan dan Pertanian The Journal of Indonesia Sustainable Development Planning (JISDeP) Buletin Poltanesa Jurnal Ilmu Kehutanan Jurnal Penelitian Kehutanan Wallacea

Erny Poedjirahajoe

Departemen Konservasi Sumberdaya Hutan, Fakultas Kehutanan UGM

Author-ID : 1515003

Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Environmental Science Immunology & microbiology Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Physics Social Sciences Veterinary

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Dendrogram Zonasi Pertumbuhan Mangrove Berdasarkan Habitatnya di Kawasan Rehabilitasi Pantai Utara Jawa Tengah Bagian Barat Erny Poedjirahajoe
Jurnal Ilmu Kehutanan Vol 1, No 2 (2007)
Publisher : Fakultas Kehutanan Universitas Gadjah Mada

Dendrogram Zoning of Mangrove Growth Based on Its Habitat in the Rehabilitation Area on the North Coasts, West Region of Central JavaThe growth of rehabilitated mangrove, although planted at the same time, shows differences in terms of density and height growth. Such condition is visible in the North Shore of Brebes, Tegal and Pemalang Regency.The research result shows that mangrove growth planted in 2001 on the North Shore of Brebes, Tegal and Pemalang Regency is not apart from several factors, among others are its habitat physical-chemical factors. The result of regression correlation analysis shows that the habitat factors which play an important role in the vegetation density are salinity, temperature and plankton population. Meanwhile, the most dominant factor which determines the vegetation height growth is salinity and phosphor. The combination role based on its habitat shows that mangrove growth in Brebes Regency on proximal (1P) and medial (1M) zone and the one in Pemalang Regency on proximal zone (3P) has the shortest cluster, so that those research locations have similarity on vegetation growth and its habitat factors. Meanwhile, the proximal (2P) zone in Tegal Regency is similar with the medial (2M) zone. Mangrove growth on distal zone in Tegal Regency has less good growth parameter and habitat factors compared to that of in Brebes and Pemalang for containing more sand.From the research result, it can be concluded that the existence of habitat factors salinity, plankton population and phosphor have to be taken into consideration if a mangrove area will be rehabilitated/planted especially using Rhizophora mucronata seedlings. In order to reach the maximum achievement, one thing which has to be taken into consideration is the habitat clustering of the planted area, especially in Brebes, Tegal and Pemalang Regency area.

Kajian Ekosistem Mangrove Hasil Rehabilitasi pada Berbagai Tahun Tanam untuk Estimasi Kandungan Ekstrak Tanin di Pantai Utara Jawa Tengah Erny Poedjirahajoe; Ragil Widyorini; Ni Putu Diana Mahayani
Jurnal Ilmu Kehutanan Vol 5, No 2 (2011)
Publisher : Fakultas Kehutanan Universitas Gadjah Mada

Penelitian ini dilakukan di kawasan rehabilitasi mangrove Pantai Utara Pemalang dan Rembang, Dari dua lokasi tersebut masing-masing di pilih tanam mangrove yang sama. Setiap tahun tanam dibagi dalam tiga zona dari arah laut ke darat. Kondisi ekosistem mangrove dikaji melalui pendekatan terhadap pengukuran kerapatan, rata-rata tinggi dan diameter, ketebalan lumpur, salinitas dan kandungan bahan organik pada setiap zonasi dan setiap tahun tanam. Untuk memperkirakan kandungan ekstrak tanin, pada setiap tahun tanam diambil 3 sampel vegetasi (dalam satu zona diambil satu sampel), kemudian dikelupas kulitnya, ditimbang dan dilakukan analisis laboratorium. Kandungan ekstrak tanin dalam satu tahun tanam dapat diestimasi dengan cara menghubungkan dengan nilai kerapatannya. Uji varian untuk dua sifat yang berbeda, dilakukan untuk melihat signifikasi kerapatan tanaman pada setiap tahun tanam pada dua lokasi rehabillitasi mangrove. Hasil penelitian menunjukkan bahwa estimasi kandungan ekstrak tanin di Pemalang dan Rembang pada tahun tanam 2002 rata-rata menunjukkan angka yang lebih tinggi daripada tahun tanam 2003 dan 2006. Pada tahun 2002 di Pemalang, estimasi ekstrak tanin sebesar 105,93 kg/ha sedangkan di Rembang mencapai 159,23 kg/ha. Pada tahun tanam 2006 mangrove di Pemalang mempunyai kandungan ekstrak tanin sekitar 80,90 kg/ha, sedangkan di Rembang sekitar 143,36 kg/ha.Kata kunci: Mangrove, ekosistem, ekstrak tanin. A Study of Rehabillitated Mangrove Ecosystem in Different Planting Year to Estimate Tannin Extract Content in Northern Coast of Central JavaAnstractThe research was conducted in the mangrove plantation areas of Pemalang and Rembang North coasts. From those two areas, mangrove vegetations with the same three plantation ages were chosen which were then divided into three zones from the sea. Tree density, height and diameter, the depth of sediment, water salinity and the content of organic matter were measured and assessed for each mangrove zones and plantation ages. In order to estimate the content of tannin extract of a mangrove tree, three mangrove trees of each plantation age were taken as samples. The wood of the trees were then peeled off, measured the weight and taken to the laboratory to analyze their tannin extract content. The content of tannin extract of the whole mangrove areas was obtained by multiplying the average of tannin extract content per tree with the vegetation density of those two mangrove areas. Varians analysis was employed to find out the significant different of the density three plantation ages of two mangrove rehabilitation areas. The results showed that for plantation years of 2002, the tannin extract content at both mangrove plantation areas of Pemalang and Rembang in averages was estimated to have a higher amount than those of plantation year 2003 and 2006. Respectively, the tannin extract content of plantation year of 2002 in Pemalang and Rembang were estimated to have 105.93 kg/ha and 159.23 kg/ha tannin extract. Mangrove vegetation with plantation year of 2006 in Pemalang contained 80.90 kg/ha, while for Rembang is 146.36 kg/ha.

Klasifikasi Habitat Mangrove untuk Pengembangan Silvofishery Kepiting Soka (Scylla serrata) di Pantai Utara Kabupaten Rembang Erny Poedjirahajoe
Jurnal Ilmu Kehutanan Vol 9, No 2 (2015)
Publisher : Fakultas Kehutanan Universitas Gadjah Mada

Pemanfaatan mangrove untuk silvofishery mampu mendatangkan keuntungan bagi masyarakat sekitarnya, maka perlu dikembangkan agar hasilnya optimal dan berkelanjutan. Tujuan penelitian ini untuk mendapatkan klasifikasi karakteristik habitat mangrove yang sesuai untuk pengembangan kepiting soka yang selama ini sudah dikembangkan di Pantai Utara Pemalang. Penelitian dilakukan di Pantai Utara Kabupaten Rembang pada tahun tanam 2000, 2003, dan 2004. Masing-masing tahun tanam dibagi menjadi jalur-jalur tegak lurus garis pantai. Setiap jalur diletakkan 3 petak ukur 5 x 5m sesuai dengan zonasi yang ada pada hutan mangrove, kemudian diukur kerapatan tanaman mangrove, ketebalan lumpur, DO, salinitas, suhu, pH, dan kepadatan plankton. Sebagai pembanding, maka diambil pula data karakteristik habitat di mangrove Pemalang yang sudah digunakan silvofishery kepiting soka. Data pada setiap petak ukur dirata-rata dan dibedakan pada setiap zonasi. Data setiap zonasi dianggap sebagai relevé. Relevé-relevé pada kedua lokasi kemudian dianalisis menggunakan uji pengelompokan atau cluster analysis dengan metode jarak Mean Euclidean Distance (MED). Hasil penelitian menunjukkan bahwa pada umumnya cluster yang terbentuk kurang bervariasi. Sepintas terlihat hanya ada 2 kelompok besar yang terpisahkan, yaitu pada jarak cluster 10. Pengelompokan demikian ini cukup bagus karena kemiripan habitat ditunjukkan secara ekstrim oleh dua kelompok besar tersebut. Meskipun pada jarak cluster 5 terdapat kelompok yaitu relevé 3,6,8 dengan relevé 2, namun demikian kurang terlihat jika dibanding dengan jarak di atasnya. Pada umumnya habitat mangrove di Rembang kurang sesuai untuk pemeliharaan kepiting soka, karena hanya relevé 1 yang sesuai. Perlakuan lebih lanjut untuk perbaikan habitat diperlukan agar jenis kepiting ini dapat hidup dengan optimal.Kata kunci: silvofishery, kepiting soka, habitat mangrove, Rembang, relevé. Classification of mangrove habitat for development of soka crab (Scylla serrata) silvofishery in the north coast of Rembang RegencyAbstractSilvofishery practices as mangrove utilization have been providing various benefit for local societies, thus it needs to be developed for its product optimization and sustainability. Providing suitable area for silvofisheries is crucial for the development of silvofishery. This study was aimed to classify the mangrove habitat characteristics that were suitable for soka crab farming in the north coast of Rembang Regency, following the success of the north coast of Pemalang Regency. This research were conducted in the north coastof Rembang Regency in 2000, 2003, and 2004 planting years. Perpendicular transects to the coastal line were established on each plantation area. On each transect, three plots of 5 x 5 m were established and distributed on each mangrove zone. Mangrove tree density, mud depth, dissolved oxygen, salinity, temperature, pH and plankton density were measured from each plot. The measurements of habitat characteristics were also conducted in the mangrove area of Pemalang, where soka crab farming was developed earlier as a comparison between areas with the same plantation period). Data collected from all plot were averaged and differentiated based on Mangrove zonation. Data of each zone were treated as relevé. The relevé of the two study sites (Rembang and Pemalang) were then analyzed using cluster analysis with Mean Euclidean Distance (MED). The results showed that the cluster was relatively less various. There were two main separated groups with cluster distance at 10. This grouping was relatively good, indicated by distinctive similarity of habitat within each group. At cluster distance of 5, there were two main groups which were relevé 3,6,8 with relevé 2 and the rest as other group. Whereas the cluster distance of 5 in the relevé 3,6,8 was grouped with relevé 2, but it was not clearer than above group. Commonly, mangrove habitat in Rembang was less suitable for soka crab farming because only relevé 1 was suitable for the habitat of this crab. Further intervention is required for habitat improvement.

Penggunaan Principal Component Analysis dalam Distribusi Spasial Vegetasi Mangrove di Pantai Utara Pemalang Erny Poedjirahajoe; Djoko Marsono; Frita Kusuma Wardhani
Jurnal Ilmu Kehutanan Vol 11, No 1 (2017)
Publisher : Fakultas Kehutanan Universitas Gadjah Mada

Habitat sangat memengaruhi komposisi penyusun ekosistem mangrove. Perubahan kualitas habitat secara kompleks dapat mengakibatkan pergeseran jenis tanaman penyusunnya. Penelitian ini bertujuan untuk mengetahui pola distribusi spasial vegetasi mangrove berdasarkan karakteristik habitat di kawasan rehabilitasi mangrove Pemalang. Metode yang digunakan adalah kombinasi antara metode jalur dan petak contoh. Hasil penelitian menunjukkan sebaran spasial faktor habitat mangrove pada setiap stasiun pengamatan membentuk tiga cluster dengan karakteristik yang berbeda. Cluster 1 dicirikan pH, oksigen terlarut, dan suhu yang rendah, ketebalan lumpur dan salinitas yang tinggi. Cluster 2 oleh kandungan oksigen terlarut, salinitas, dan tebal lumpur yang rendah, serta suhu dan pH yang tinggi. Cluster 3 dengan pH, salinitas, dan tebal lumpur yang rendah serta kandungan oksigen terlarut yang tinggi dan suhu yang sedang. Sebaran spasial jenis mangrove berdasarkan karakteristik faktor habitat dapat membentuk tiga cluster. Cluster 1 terdiri dari Rhizophora mucronata Lam. dan Sonneratia alba Sm. dengan karakteristik habitat berupa suhu yang sedang dan oksigen terlarut yang tinggi. Cluster 2 terdiri dari Acanthus ilicifolius L., Avicennia alba Blume, dan R. apiculata Blume dengan karakteristik habitat berupa tebal lumpur, pH, oksigen terlarut, dan salinitas yang sedang. Cluster 3 dengan jenis Avicennia marina (Forsk.) Vierh. dengan karakteristik habitat berupa pH, salinitas, suhu, dan tebal lumpur yang tinggi.Usage of Principal Component Analysis in the Spatial Distribution of Mangrove Vegetation in North Coast of PemalangAbstractHabitat factors greatly affect the composition of the mangrove ecosystem. Changes in habitat quality may result on a shift of the type of plant mangrove ecosystem composition. This study aimed to determine the spatial distribution patterns of mangrove vegetation based on the characteristics of the habitat in the mangrove area in Pemalang District. The method used for data collection was the combination of transect method and plot sampling. The results showed that the spatial distribution of mangrove habitat factors at each observation station formed three clusters with different characteristics. Cluster 1 was characterized by low levels of pH, dissolved oxygen, and temperatures, as well as high values of mud thickness, and salinity. Cluster 2 was characterized by the low amount of dissolved oxygen, salinity, and mud thickness and high levels of temperature and pH. Cluster 3 was characterized by low values of pH, salinity, and mud thickness but high amount of dissolved oxygen and mild temperatures. The spatial distribution of mangrove species based on the characteristics of the habitat factors formed three clusters. Cluster 1 were Rhizophora mucronata Lam. and Sonneratia alba Sm. species as the habitat characteristics were mild temperatures and high amount of dissolved oxygen. Cluster 2 were Acanthus ilicifolius L., Avicennia alba Blume, and Rhizophora apiculata Blume with habitat characteristics were moderate levels of mud thickness, pH, dissolved oxygen and salinity. Cluster 3 was Avicennia marina (Forsk.) Vierh. as its habitat characteristics were high values of pH, salinity, temperature, and mud thickness.

Potensi Pemanfaatan Ipomoea pes-caprae (L.) R. Br. di Hutan Pantai Petanahan Kebumen Frita Kusuma Wardhani; Erny Poedjirahajoe
Jurnal Ilmu Kehutanan Vol 14, No 2 (2020)
Publisher : Fakultas Kehutanan Universitas Gadjah Mada

Vegetasi yang tumbuh di hutan pantai memiliki potensi ekonomi yang tinggi, salah satunya disebabkan oleh tingginya zat bioaktif yang memiliki sifat farmakologis. Salah satu spesies yang memiliki potensi tinggi sebagai sumber obat alam yaitu Ipomoea pes-caprae (L.) R. Br. Penelitian ini bertujuan untuk mengkaji potensi pemanfaatan I. pes-caprae di habitat alaminya yaitu di hutan pantai Kecamatan Petanahan, Kabupaten Kebumen. Pengamatan dilakukan dengan metode kuadrat ukuran 1 x 1 meter yang ditempatkan secara sistematik. Hasil penelitian menunjukkan bahwa kawasan yang paling dekat dengan pantai memiliki biomassa I. pes-caprae yang paling tinggi, yaitu dengan rata-rata sebesar 235,01 gr/m2. Sebaran spesies tersebut dibatasi oleh kompetisi dan naungan. Dalam bidang farmakologis kandungan fitokimia dalam ekstrak Ipomoea pes-caprae memiliki potensi yang tinggi untuk dikembangkan sebagai bahan baku obat. Namun ketersediaannya di hutan pantai Kecamatan Petanahan masih terbatas sehingga belum dapat dikembangkan untuk menjadi bahan baku obat alam. Potential Utilization of Ipomoea pes-caprae (L.) R. Br. in the Coastal Forest Petanahan Kebumen DistrictAbstractVegetation that grows in coastal forests has high economic potential, one of which is caused by the high bioactive substances that have pharmacological properties. One species that has high potential as a source of natural medicine is Ipomoea pes-caprae (L.) R. Br. This study aims to examine the potential use of I. pes-caprae in its natural habitat in the coastal forest of Petanahan District, Kebumen Regency. Observations were made using the 1 x 1 meter quadratic method which was placed systematically. The results showed that the area closest to the coast had the highest biomass I. pes-caprae, with an average of 235.01 gr/m2. The distribution of these species is limited by competition and shade. In the pharmacological field, the phytochemical content in Ipomoea pes-caprae extract has high potential to be developed as a drug raw material. But its availability in the coastal forests of Petanahan District is still limited so it cannot be developed to become raw material for natural medicine.

Co-Authors Abd. Kadir W. Abd. Kadir W. Abd. W Kadir, Abd. W Abd. W. Kadir, Abd. W. Agung B. Supangat Agung Budi Supangat Agung Budi Supangat Astri Winda Siregar Batseba A. Suripatty Boy Rahardjo Sidharta Budiadi Budiadi Chafid Fandeli David Suwito Diah Irawati Dwi Arini Diah Irawati Dwi Arini Djoko Marsono Djoko Marsono Djoko Marsono Djoko Marsono Djoko Marsono Djoko Marsono Djumanto Djumanto Djumanto Dradjat , Moch. Frita Kusuma Wardhani Haryono Suprijo, Haryono Haryono Supriyo Haryono Supriyo Haryono Supriyo Haryono Supriyo Herawikan Mandiriati Herawikan Mandiriati Hermawan, Much . Taufik Tri Hermawan, Much. Taufik Tri Iin Sumbada Sulistyorini, Iin Sumbada Ikhwanudin Rofi'i Imanuddin Imanuddin Jeriels Matatula, Jeriels Krisnawati Krisnawati Lies Rahayu WF Lies Rahayu Wijayanti Faida Lies Rahayu Wijayanti Faida Mariah Ulfa Moch. Dradjat Moehar Maraghiy Harahap Much. Taufiq Tri Hermawan Muh. Taufik Tri Hermawan Muhamad Salamuddin Muhammad Reza Pahlevi Muhammad Wahyudi Muli Edwin, Muli Musyafa Musyafa Ni Putu Diana Mahayani Putri, Adhe Viana Yulida Putu Sudira Putu Sudira Putu Sudira Putu Sudira Ragil Widyorini Ris Hadi Purwanto Rohmani Sulisyati Ronggo Sadono San Afri Awang San Afri Awang Saputra, Dimas Cahya Kurnia Satria, Ryan Adi Satya Agustina Laksananny satya laksananny Satyawan Pudyatmoko Satyawan Pudyatmoko Satyawan Pudyatmoko Satyawan Pudyatmoko Setyono Sastrosumarto Setyono Sastrosumarto, Setyono Sigit Heru Murti Suratman Wardhani, Frita Kusuma Yunita Lisnawati

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