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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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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.

Roosting Selection by Red and Blue Lory (Eos histrio Muller, 1776) in Karakelang Island North Sulawesi Diah Irawati Dwi Arini; Satyawan Pudyatmoko; Erny Poedjirahajoe
Jurnal Penelitian Kehutanan Wallacea Vol. 6 No. 1 (2017)
Publisher : Foresty Faculty of Hasanuddin University

The Red and blue lory is an endemic parrot species from Talaud Islands, North Sulawesi. The use of existing resources is suspected that occurs of selection including the roosting trees. The research aims to identifying the characteristics of Red and Blue Lory roost tree and determining variables in its selection. We measured 14 variables to identify the characteristics and selection of roost tree. Mann-Whitney test, T-test, Chi-sqare test and Binary Logistic Regression were employed to analyze data. We detected 11 roost trees in study field, there are Gehe (Pometia coriacea Radkl) nine individual, Binsar (Ficus variegata) and Lawean (Sterculia sp) one individual. The Chi-square test identified five variables which related to roost tree selection, i.e; branch-free bole length, canopy diameter, canopy density and the number of trees around the roost tree on diameter 20 - 40 cm and > 41 cm. The Logistic regression analysis detected three variables that gave the most influence on roost tree selection, but branch-free bole length gave the most influence on roost tree selection.

Enhancing Stakeholder Capacity for Effective Invasive Species Management in Conservation Areas Poedjirahajoe, Erny; Mahayani, Ni Putu Diana; Wardhani, Frita Kusuma; Satria, Ryan Adi; Pahlevi, Muhammad Reza
Jurnal Pengabdian kepada Masyarakat (Indonesian Journal of Community Engagement) Vol 10, No 4 (2024): December
Publisher : Direktorat Pengabdian kepada Masyarakat Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jpkm.91646

One of the ecological challenges in managing conservation areas is the colonization and establishment of alien and/or native plant species, especially after forest disturbances. The capacity stakeholders to determine the invasiveness risk of these plant species groups and then management strategies to monitor changes in vegetation structure and species composition is critical. The community engagement program aims to improve the capacity of conservation area stakeholders to identify plant species, including invasive species, and assess the risk of invasive species. Focus group discussion (FGD) were conducted online and offline and targeted stakeholders of the Natural Resources Conservation Agency (Balai Konservasi Sumber Daya Alam–BKSDA) of Central Java Province. Three FGD sessions were held on the topics: (1) forest monitoring and invasion ecology, (2) plant species identification and invasive species monitoring techniques, and (3) vegetation and invasiveness risk analysis. During the discussion, target groups shared ideas and lessons learned related to managing invasive species in the field. The results showed a significant increase in the capacity of the target group (p=4.546e-09), as the average pretest score was 56.25 ± 13.68 compared to the average posttest score of 75.70 ± 20.27. The target group understands the definition of an invasive (alien) species, the factors that determine the success of this species invasion, and the positive and negative contributions alien species to the newly established ecosystem. Some gaps that need to be addressed relate to methods and criteria for identifying species invasiveness in invasive species risk analysis. As a follow-up, a practical training on invasive (alien) species risk analysis was conducted at different occasion and funding sources.

Historical Analysis of Mangrove Ecosystems Changes in Tidal Disasters-Prone Areas Using Remote Sensing Putri, Adhe Viana Yulida; Sadono, Ronggo; Poedjirahajoe, Erny
Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Vol 15 No 4 (2025): Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (JPSL)
Publisher : Pusat Penelitian Lingkungan Hidup, IPB (PPLH-IPB) dan Program Studi Pengelolaan Sumberdaya Alam dan Lingkungan, IPB (PS. PSL, SPs. IPB)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jpsl.15.4.580

Mangrove ecosystems are vital for human livelihoods, but ongoing exploitation and natural disturbances have led to significant land use and cover changes. Therefore, this study aimed to identify trends regarding land cover (LC) changes in mangrove ecosystems using remote sensing. LC changes from 1988 to 2024, as observed using remote sensing techniques. Satellite imagery from Landsat 5 TM, Landsat 7 ETM+, Landsat 8 OLI/TRIS, and Landsat 9 OLI/TRIS was analyzed using the Normalized Difference Vegetation Index (NDVI), Normalized Difference Water Index (NDWI), and a newly developed Combined Mangrove Recognition Index (CMRI). The results revealed four distinct phases of LC change over the study period (1988–2024), starting from 1988 to 1989, during which 12.14 ha of mangrove forest were documented. The second phase, spanning from 1990 to 1994, witnessed the onset of anthropogenic disturbances in pond area expansion, totaling 41.04 ha. The third phase, which spanned from 1995 to 1998, featured abrasion, resulting in 11.56 ha reduction in the area covered. Natural ecosystem recovery began in 1998 and continued with human intervention in the fourth phase from 2008 to 2024, resulting in an increase in mangrove forest LC by 62.57 ha. The study demonstrates the utility of remote sensing in documenting ecological changes over time and provides critical insights for sustainable coastal management and policymaking in vulnerable urban coastal zones.

Changes in the ecological system of coastal areas of Bantul and Kulon Progo Regencies Wahyudi, Muhammad; Poedjirahajoe, Erny; Hermawan, Much. Taufik Tri; Djumanto, Djumanto
Indonesian Journal of Geography Vol 57, No 1 (2025): Indonesian Journal of Geography
Publisher : Faculty of Geography, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijg.100952

Coastal areas are classified as highly vulnerable because they are always tied to changes in the global aquatic environment. The ecosystem dynamics are increasingly complicated and complex as a result of interactions with other systems on land. This phenomenon is very visible in the coastal areas of Bantul Regency and Kulon Progo Regency. We use Sentinel-2 satellite image interpretation in the period 2013-2022 as a historical record of land use change, and then explore it with Niklas Luhmann's social system theory to understand how communities and government mean the ecological system represented by activities in coastal areas. The results showed that the community and the Government massively changed the original ecosystem of pes-caprae with the dominant afforestation of shrimp cypress. For the community, afforestation is assumed to support production agriculture, from subsistence agriculture. For the government, afforestation is a misconception about reforestation and protecting vital infrastructure such as Yogyakarta International Airport. The main capital for change is technology and its knowledge, and economic capital obtained from production. The economic capital obtained is used for social transformation, including eliminating the stigma of poor, uninformed, and inferior coastal communities. The results achieved change the meaning of land from previously only to support daily livelihoods to production factors that have very high economic and social value. Any attempt to change the establishment of the social and economic system will be met with strong resistance from the community. Under these conditions, the sustainability discourse that we are developing is to build an institutionalized knowledge system, which is carried out repeatedly and continuously, which is important for the community to understand because its dynamics will continue to develop in the future.Received: 2024-10-23 Revised: 2025-02-07 Accepted: 22025-04-16 Published: 2025-04-30

EVALUATING HABITAT SUITABILITY AND ECOTOURISM POTENTIAL OF MANGROVE ECOSYSTEMS PROGO RIVER YOGYAKARTA Poedjirahajoe, Erny; Pahlevi, Muhammad Reza; Wardhani, Frita Kusuma; Satria, Ryan Adi; Saputra, Dimas Cahya Kurnia
BIOTROPIA Vol. 32 No. 1 (2025): BIOTROPIA Vol. 32 No. 1 April 2025
Publisher : SEAMEO BIOTROP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11598/btb.2025.32.1.2433

ARTICLE HIGHLIGHTS- The article introduces an evaluation of mangrove habitat suitability for ecotourism in the Progo River area, which has not been extensively studied in this region.- It employs nested and gridline sampling methods to measure habitat quality more comprehensively, leading to more accurate data on mangrove conditions.- The study examines the impact of physical and chemical factors such as temperature, salinity, and dissolved oxygen on mangrove growth and biodiversity.- It uses the Tourism Suitability Index to identify locations suitable for nature tourism activities around the Progo River.- The article stresses the need for improved management of mangrove ecotourism areas to preserve ecosystem sustainability and support the local economy. ABSTRACTMangrove forests are a transitional ecosystem located between land and sea. Habitat factors greatly influence the growth of mangrove plants. Habitat suitability is reflected in the suitability of the species that can grow in the habitat. Increased growth will ultimately increase water productivity, which can be seen from the presence of various types of biota and environmental improvements. The local community planted mangrove species (Sonneratia sp.) along the Progo River in an area of 75 h. This study aimed to: 1) assess the quality/characteristics of the Progo River waters that will be used for a water tourism center and 2) assess the suitability (IKW) of the Progo River waters for water tourism in Bleberan Hamlet. Data collection was carried out using nested sampling. Data analysis included the diversity of biota types using the Shannon Diversity Index and vegetation analysis. The results showed that the highest temperature occurred at station 3 plot 10, the highest mud thickness was observed at station 5 plot 9, the highest salinity was detected at station 3 plot 10, the highest water clarity was observed at station 2 plot 7, the highest pH was seen at station 1 plot 6 and 7, while the highest DO was spotted at station 3 plot 8. Some of the biota obtained included crustaceans, gastropods and actinopterygii. The habitat types of vegetation obtained were trees, shrubs, and some herbs. Based on the Tourism Suitability Index (IKW) value, there were 3 stations suitable for camping/outbound, 2 stations suitable for relaxing, and 2 stations suitable for river tracks.

Kesesuaian Struktur Vegetasi dan Habitat Hutan Mangrove untuk Silvofishery di Pantai Utara Mojo Pemalang Jawa Tengah Pahlevi, Muhammad Reza; Poedjirahajoe, Erny; Wardhani, Frita Kusuma; Satria, Ryan Adi; Saputra, Dimas Cahya Kurnia
Jurnal Ilmu Lingkungan Vol 23, No 5 (2025): September 2025
Publisher : School of Postgraduate Studies, Diponegoro Univer

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jil.23.5.1227-1236

Pembukaan hutan mangrove menjadi tambak diakibatkan oleh permintaan hasil-hasil perikanan dan hasil lainnya seperti kepiting bakau, dan udang yang semakin meningkat telah merusak ekosistem mangrove. Usaha untuk memulihkan fungsi ekosistem mangrove salah satunya melalui kegiatan rehabilitasi yang meliputi penghijauan pantai dengan menanam mangrove dan dengan memanfaatkan silvofishery. Penelitian ini bertujuan untuk (i) menganalisis faktor fisis, kimia, dan biologis habitat mangrove pada tahun tanam 2001, 2003, dan 2004 (ii) mengidentifikasi lokasi mana saja yang sesuai untuk dijadikan sebagai areal silvofishery pada tahun tanam 2001, 2003, dan 2004. Penelitian dilakukan dengan cara membagi kawasan rehabilitas mangrove menjadi 3 jalur sebagai ulangan dan tegak lurus garis pantai dengan jarak antar jalur 25 m. pada setiap jalur dibagi menjadi 3 zona ke arah darat. Pada setiap zona dibuat PU ukuran 5m x 5m, sehingga total ada 36 PU. Pada setiap PU diukur suhu, DO, salinitas, pH air, ketebalan lumpur, dan kerapatan vegetasi, plankton dan nekton. Hasil penelitian ini menunjukkan bahwa tidak ada lokasi yang sesuai untuk dijadikan sebagai silvofishery, karena beberapa faktor yang belum mendukung pada saat itu, sehingga perlu dilakukan perbaikan dengan cara penelitian lebih lanjut mengenai silvofishery ini dan faktor-faktor yang belum memenuhi kriteria habitat mangrove dalam tabel kesesuaian ekologis tersebut.

Arrangement of Coastal Area Management Institutions Bantul and Kulon Progo Regencies Wahyudi, Muhammad; Poedjirahajoe, Erny; Hermawan, Much. Taufik Tri; Djumanto
Jurnal Penelitian Pendidikan IPA Vol 10 No 8 (2024): August
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v10i8.7466

The most dominant community activities are sand farming and tourism, while government intervention is in the form of infrastructure development, establishing conservation areas, protection, and tourism. The coastal areas of Bantul and Kulon Progo Regencies in DI Yogyakarta are naturally influenced by the supply of sand sedimentation from Mount Merapi, wind, and beach wave energy. However, this area has now become an area for agriculture, tourism, and other economic businesses, supported by various infrastructures. The condition shows that there is interpenetration of the ecological system by the social system and the development policy system. This research aims to organize coastal area management institutions as a result of interpenetration. The method used combines the social-ecological systems theory approach with social systems theory, which aims to get an overview of the dynamics of interpenetration. The research results show that interpenetration between the three systems occurs repeatedly and creates reciprocal symptoms. This research recommends that institutional governance be used as a middle way to reduce vulnerability, increase resilience, and strengthen sustainability. Institutional governance places the social system and development policy system as subjects, and the ecological system and the other two systems as objects.

Management Ecology and Coastal Area Development Policy Bantul and Kulon Regencies Progo Wahyudi, Muhammad; Poedjirahajoe, Erny; Hermawan, Much . Taufik Tri; Djumanto
Jurnal Penelitian Pendidikan IPA Vol 10 No 8 (2024): August
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v10i8.7562

Management area coast Bantul and Kulon Regencies Progo important done, in discourse connection with system social or activity man often without notice continuity source Power nature and power support the environment or system its ecology. In development, system ecology interprenate come back system policy development in form disturbances environment or phenomenon happen inconsistency on rule legislation That own and high costs for anticipate it. Over each other interpenetration between system that, is important for lower vulnerability and improve resilience area coast through non-formal, formal and political approaches. With use an ecological systems approach is important done and deep study This show that system ecology area coast penetrated by the system policy development is very strong and massive. Research result show that Dynamics each other interpenetration also occurs in the system policy development to system ecology. Variety development ongoing infrastructure massive in time short on the area coastal, has bring up interpenetration come back system ecology

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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