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All Journal Journal of Degraded and Mining Lands Management Jurnal Hutan Pulau-Pulau Kecil : Jurnal Ilmu-Ilmu Kehutanan dan Pertanian Jurnal Sylva Scienteae MAKILA: Jurnal Penelitian Kehutanan Jurnal Sains dan Teknologi Jurnal Penyuuhan dan Pemberdayaan Masyarakat (JPPM) Open Science and Technology Jurnal Riset Rumpun Ilmu Tanaman BAKIRA: Jurnal Pengabdian Kepada Masyarakat Ardhi: Jurnal Pengabdian dalam Negri MARSEGU : Jurnal Sains dan Teknologi Jurnal Pengabdian Cendekia Maanu : Jurnal Pengabdian Kepada Masyarakat PENGAMATAN: Jurnal Pengabdian Masyarakat untuk Ilmu MIPA dan Terapannya
Irwanto Irwanto
Jurusan Kehutanan Fakultas Pertanian Universitas Pattimura Ambon Jl. Ir. M. Putuhena, Kampus Poka Ambon 97237
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PERTUMBUHAN DAN PERKEMBANGAN TANAMAN SAMAMA (Anthocephalus macrophyllus) DI DEMPLOT SUMBER BENIH DESA HATUSUA KECAMATAN KAIRATU KABUPATEN SERAM BAGIAN BARAT Yali Joko Istia, Yali Joko Istia; Siahaya, Ludia; Irwanto, Irwanto
MARSEGU : Jurnal Sains dan Teknologi Vol. 1 No. 4 (2024): MARSEGU : Jurnal Sains dan Teknologi
Publisher : PT. BARRINGTONIA ASIATICA LESTARI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.69840/marsegu/1.4.2024.370-386

Abstract

The aim of this research is to determine the diameter increment and height increment, growth and development of Samama Plants (Anthocephalus marcophyllus) as well as environmental factors that influence the growth of Samama Plants (Anthocepalus marcophyllus). This research was carried out in Block III of Samama Plants (Anthocephalus marcophyllus) in the Seed Source Demonstration Plot in Hatusua Village, Kairatu District, West Seram Regency. Initial data was taken in January 2022 and continued with final data collection in July 2022. This research uses a quantitative analysis method by calculating the Average Annual Increment (MAI), current annual increment (CAI) and analysis simple regression. The results of further research show that the growth of Samama (Anthocephalus marcophyllus) plants in the seed source demonstration plot of Hatusua village, West Seram Regency with a Current Annual Rate (CAI) diameter in 2022 is 1.2 (cm/tnm/yr) and an average annual increase (MAI) diameter is 3.05 (cm/tnm/yr), current annual increment (CAI) is high, namely 1.77 (m/tnm/yr) and average annual increment (MAI) is high, namely 2.93 (m /tnm/yr). The development of the Samama plant in measurements in 2022, the walnut plant has developed. From the results of research in 2022, the growth of the Samama plant is at the pole and tree level. There are 8 trees on the pole with diameters ranging from 14.5 – 20.
IDENTIFIKASI  JENIS DAN KERUSAKAN TUMBUHAN MANGROVE DI WILAYAH PESISIR PANTAI DESA TIAL KECAMATAN SALAHUTU Renwarin, Nur Muhammad; Irwanto, Irwanto; Talaohu, Moda
MARSEGU : Jurnal Sains dan Teknologi Vol. 1 No. 5 (2024): MARSEGU : Jurnal Sains dan Teknologi
Publisher : PT. BARRINGTONIA ASIATICA LESTARI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.69840/marsegu/1.5.2024.467-479

Abstract

The village of Tial, located in the Salahutu Subdistrict, has a mangrove forest that plays an important role in protecting the coast from erosion. However, many people are unaware of the species of mangroves and the extent of the damage occurring. This study aims to determine the structure of the mangrove forest community, the level of damage, and the factors causing the damage. The methods used were quantitative descriptive methods in the form of surveys and observations, with the sampling technique being the Census method. The main data variables needed include the measurement of diversity index parameters and important value index (IVI) parameters, which include: density, relative density, frequency, relative frequency, dominance, and relative dominance. The results of this study indicate that the community types found on the coast of Tial Village are Sonneratia alba, Aegiceras floridum, Rhizophora mucronata, and Lumnitzera racemosa. The level of damage to the mangrove forest falls into the category of damaged (sparse), with a density level of <1000 trees/ha, specifically seedlings at 112/ha, saplings at 455/ha, and trees at 178/ha, and it has a diversity index H'<1, specifically seedlings at 0.63, saplings at 0.74, and trees at 1.16. The factors causing the damage to the mangrove forest on the coast of Tial Village include a lack of nutrient elements, lichen fungi, waste, abrasion and light intensity.  
STRUKTUR DAN KOMPOSISI VEGETASI HUTAN ALAM NEGERI AMAHUSU KECAMATAN NUSANIWE KOTA AMBON Sapardi, Colin; Irwanto, Irwanto; Komul, Yulianus
MARSEGU : Jurnal Sains dan Teknologi Vol. 1 No. 8 (2024): MARSEGU : Jurnal Sains dan Teknologi
Publisher : PT. BARRINGTONIA ASIATICA LESTARI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.69840/marsegu/1.8.2024.766-783

Abstract

This study aims to determine the structure and composition of the natural forest vegetation of Negeri Amahusu, Nusaniwe District, Ambon City. The sampling method used in this study is a combination of the grid line method and the path method to study the composition and structure of vegetation at the research location. In this study, 5 (five) observation paths were made, each path consisting of 5 plots with a size of 20 x 20 m for the tree level so that the observation path measures 20 x 100 m. While the sample plots for the pole level were made 10 x 10 m, the sapling level 5 x 5 m, and the seedling level 2 x 2 m. The results of the study showed that the Amahusu natural forest consists of 4 Stratifications (Strata A, B, D, and E) dominated by stratum B, where the height of stratum A trees ranges from 20-25 m while stratum B ranges from 8-19 m with dominant species including: Durian (Durio zibethinus), Canary (Canarium commune), and Linggua (Pterocarpus indicus). The composition of Amahusu forest species at the seedling level consists of 18 species, 20 species of saplings, 15 species of poles and 15 species of trees. The species diversity index is included in the medium category with an H' value at the seedling level of 1.148, saplings 1.174, poles 1.018 and trees 1.072.
Struktur dan Komposisi Hutan Mangrove di Negeri Kamarian Kecamatan Kairatu Kabupaten Seram Bagian Barat, Maluku Creysmen Ginesio Pentury; Irwanto, Irwanto; Moda Talaohu
INSOLOGI: Jurnal Sains dan Teknologi Vol. 4 No. 2 (2025): April 2025
Publisher : Yayasan Literasi Sains Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55123/insologi.v4i2.4986

Abstract

Mangrove forests represent one of the most ecologically and economically significant coastal ecosystems. Ecologically, well-structured mangrove vegetation functions as a natural buffer protecting coastlines from erosion, saltwater intrusion, and tidal wave impacts. This research aims to determine the structure and composition of mangrove forests and identify mangrove growth habitats in Kamarian. The vegetation analysis employed the line plot method with measurement plots of 20 m × 20 m for all growth stages (seedling, sapling, and tree), consisting of two blocks: Block A with 36 plots covering 1.44 ha, and Block B with 25 plots covering 1.00 ha. Results indicate that mangrove forests in Kamarian can be classified into four strata according to tree height: Stratum A (20-28 m), Stratum B (5-20 m), Stratum C (1-5 m), and Stratum D (0-1 m). Tree diameter variations ranged from 10 to 148 cm, with heights reaching 5-28 meters. Block A contained four mangrove species: Sonneratia alba, Aegiceras corniculatum, Rhizophora apiculata, and Sonneratia caseolaris, while Block B contained only two species: Aegiceras corniculatum and Sonneratia alba. The Shannon-Wiener species diversity index for all growth stages in Kamarian's mangrove forests ranged from 0.20 to 0.81, categorized as low diversity.
KONSULTASI PUBLIK KAJIAN PERFORMANCE DALAM RANGKA OPTIMALISASI PEMBANGUNAN PARIWISATA DI KOTA TUAL Ega, La; Irwanto, Irwanto; Boreel, Aryanto; Sinay, Lexy J.; Tupan, Johan M.; Ferdinandus, Stenly Jacobus; Faisal, Muhammad; Wenno, Meiske; Regar, Erfendi
BAKIRA: Jurnal Pengabdian Kepada Masyarakat Vol 6 No 1 (2025): BAKIRA : Jurnal Pengabdian Kepada Masyarakat
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat (LP2M) Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/bakira.2025.6.1.135-144

Abstract

Sustainable tourism development requires careful planning and involves various stakeholders. This community service activity aims to conduct public consultation on tourism development performance study in Tual City. The activity was carried out on December 3, 2024, involving 35 participants from various Regional Government Organizations (OPD), related institutions, and tourism business actors. The methods used were Focus Group Discussion (FGD) and presentation of study results. The consultation results show that Tual City has great marine ecotourism potential with a vision to become a sustainable marine ecotourism and cultural destination. SWOT analysis identified weaknesses in tourism facilities and basic infrastructure that need improvement. The strategic recommendations include infrastructure improvement, destination strengthening, human resource training, and tourism institutional strengthening. This public consultation successfully produced a comprehensive strategy for optimizing sustainable tourism development in Tual City involving all relevant stakeholders.
Sosialisasi dan Peningkatan Ketahanan Desa dalam Menghadapi Perubahan Iklim di Desa Amahusu Irwanto, Irwanto; Loppies, Ronny; Sahupala, Andjela; Hatulesila, Jan Willem; Fredy Hendry Louhenapessy
Jurnal Pengabdian Cendekia Vol. 1 No. 2 (2025): Edisi Agustus
Publisher : PT Pustaka Cendekia Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.71417/jpc.v1i2.24

Abstract

Perubahan iklim merupakan tantangan global yang berdampak signifikan pada ketahanan desa, khususnya di wilayah Indonesia yang 8,86% desanya termasuk dalam kategori kerentanan tinggi dan sangat tinggi. Pengabdian kepada masyarakat ini bertujuan meningkatkan pemahaman dan kapasitas masyarakat Desa Amahusu, Kota Ambon dalam upaya adaptasi dan mitigasi perubahan iklim. Metode yang digunakan adalah sosialisasi interaktif, pengukuran tingkat pemahaman awal dan akhir, serta pendampingan dengan melibatkan 30 peserta yang terdiri dari remaja dan orang dewasa. Hasil evaluasi menunjukkan peningkatan pemahaman peserta dari rata-rata skor 43,7% menjadi 78,3% setelah sosialisasi. Persentase peserta yang memahami konsep perubahan iklim meningkat dari 36,7% menjadi 86,7%, sedangkan yang mampu mengidentifikasi tindakan adaptasi dan mitigasi meningkat dari 30% menjadi 83,3%. Kegiatan ini telah berhasil memperkuat kapasitas masyarakat Desa Amahusu dalam menghadapi perubahan iklim dan mendukung status mereka sebagai penerima penghargaan Program Kampung Iklim (Proklim).
KEANEKARAGAMAN SPESIES DAN PENDUGAAN CADANGAN KARBON ATAS PERMUKAAN PADA TIPE PENGELOLAAN LAHAN DUSUNG NEGERI RUTONG, AMBON Irwanto, Irwanto; Sahupala, Andjela; Siruru, Herman
MAKILA Vol 17 No 2 (2023): Makila: Jurnal Penelitian Kehutanan
Publisher : Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/makila.v17i2.10881

Abstract

Dusung is traditional land management in Maluku by planting various plant species in the same area. Factors such as intensive land management, selection and combination of plant species, vegetation structure, topography, soil, and others influence the economic and ecological productivity of dusung. Ecological productivity affects the biomass content, which indicates the potential for carbon absorption in the land. The method used in this research is direct measurements in the field of several carbon pools specifically for aboveground biomass. Data collection was guided by Indonesian National Standards (SNI) 7724-2019 concerning field measurements for estimating forest carbon stocks. The research result showed that the diversity of vegetation species in Dusung Rutong Village at all growth levels in the moderate category tends to be low, dominated by fruit plants such as Durian (Durio zibethinus). Tree-level species diversity is moderate because the community controls the species that grow on Dusung land. The total aboveground carbon stocks in Dusung Rutong Village are 106.424 tonnes/ha, consisting of trees 100.673 tonnes/ha, undergrowth 1.708 tonnes/ha, litter 1.124 tonnes/ha, necromass 0.042 tonnes/ha and bamboo (Schizostachyum brachycladum) 2.877 tonnes/ha while the potential for equivalent carbon dioxide (CO2) absorption of 390.221 tonnes/ha.
PEMILIHAN JENIS POHON UNTUK KEGIATAN REBOISASI PADA BENDUNGAN WAY APU KABUPATEN BURU Irwanto, Irwanto; Sahupala, Andjela; Tetelay, Febian Filiph
MAANU: Jurnal Pengabdian Kepada Masyarakat Vol 1 No 1 (2023): Maanu Jurnal Pengabdian Kepada Masyarakat
Publisher : Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/maanuv1i1p26-32

Abstract

During the construction of the Way Apu Dam, the land was cleared which needed to be rehabilitated. Rehabilitation of this land requires species that can grow well and are also aesthetically pleasing and also have multiple functions. The stages of implementing rehabilitation species selection activities include observation and direct observation, inventory of endemic species in the field, monitoring of species that fail in the field, analysis of problems. Problems with previous planting failures and recommendations for suitable species. The types recommended for rehabilitation of open land are as follows: Samama (Anthocephalus macrophyllus), Pulai (Alstonia scholaris), Mountain Cassowary/Mountain Pine (Casuarina junghuhniana), Eucalyptus (Melaleuca cajuput), Eucalyptus (Eucalyptus alba), Meranti ( Shorea selanica), Lasa (Captanopsis burana), Acacia broadleaf (Acacia mangium), and Sentigi/Papua (Pemphis acidula). Planting on the left and right of the road are: Sentigi/Papua (Pemphis acidula), Mountain Cassowary/Mountain Pine (Casuarina junghuhniana), Samama (Anthocepalus macrophyllus), Pulai (Alstonia scholaris), Lasa (Castanopsis hunta), Meranti (Shorea selanica), Kayu Putih (Melaleuca cajuput), and Acacia broadleaf (Acacia mangium). Selection of species for the area planned for agro-tourism is as follows: Rambutan (Nephelium lappaceum), longan (Dimocarpus longan), types of vegetative mangoes (grafts).
Peningkatan Kapasitas Masyarakat untuk Mitigasi Bencana dan Pelestarian Lingkungan melalui Edukasi dan Aksi Penanaman di Kota Ambon Irwanto Irwanto
ARDHI : Jurnal Pengabdian Dalam Negri Vol. 3 No. 5 (2025): Oktober : ARDHI : Jurnal Pengabdian Dalam Negri
Publisher : Asosiasi Riset Pendidikan Agama dan Filsafat Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/ardhi.v3i5.1507

Abstract

Indonesia is highly susceptible to natural disasters owing to its geographical location at the intersection of three major tectonic plates. Effective disaster mitigation requires active community participation through education and tangible environmental conservation measures. This community engagement initiative aimed to strengthen community capacity for disaster mitigation and environmental preservation through cross-sectoral collaboration involving the Regional Disaster Management Agency (BPBD), the Faculty of Agriculture at Pattimura University, and the Sagu Salempeng GPM Foundation. Implementation methods comprised disaster mitigation education, extension services on conservation plant cultivation, memorandum of understanding (MoU) signing, and seedling distribution to 12 representatives from 6 villages in Ambon City, Maluku region. Outcomes revealed enhanced community comprehension of disaster mitigation concepts and strengthened commitment toward planting productive species for environmental conservation purposes. This initiative contributes to community resilience development and reinforces Indonesia's Disaster Resilient Village program.
Species Diversity and Estimation of Aboveground Carbon Stocks in Beach Forests, Hatusua Village, Maluku, Indonesia Irwanto, Irwanto; Sahupala, Andjela; Tetelay, Febian F; Komul, Yulianus D
Open Science and Technology Vol. 4 No. 2 (2024): Open Science and Technology
Publisher : Research and Social Study Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33292/ost.v4i2.141

Abstract

Hutan pantai memiliki peran ekologis yang penting dalam menjaga keseimbangan ekosistem pesisir, termasuk dalam menyerap karbon dan mendukung keanekaragaman hayati. Penelitian ini bertujuan untuk menganalisis keanekaragaman jenis pada berbagai tingkat pertumbuhan vegetasi dan menduga cadangan karbon atas permukaan di hutan pantai Negeri Hatusua, Kecamatan Kairatu, Kabupaten Seram Bagian Barat, Maluku. Analisis keanekaragaman menggunakan indeks Shannon-Wiener dan pendugaan cadangan karbon dilakukan dengan metode non-destruktif dan destruktif, mencakup pohon, nekromas, tumbuhan bawah, dan serasah. Hasil penelitian menunjukkan bahwa tingkat semai memiliki nilai keanekaragaman tertinggi (H’ = 2.48), diikuti oleh pancang (H’ = 2.18), pohon (H’ = 1.59), dan tiang (H’ = 1.22). Kerapatan vegetasi mencerminkan pola regenerasi alami hutan, dengan tingkat semai mencapai 130,500 individu/ha, namun mengalami penurunan signifikan pada tingkat pancang (1,920 individu/ha), tiang (460 individu/ha), dan pohon (100 individu/ha). Sedangkan total cadangan karbon atas permukaan mencapai 89.41 ton/ha, dengan pohon sebagai penyimpan karbon terbesar (83.87 ton/ha atau 93.81% dari total karbon), dan serapan karbon dioksida mencapai 327.83 ton/ha ekuivalen. Beach forests play a crucial ecological role in maintaining the balance of coastal ecosystems, including carbon sequestration and biodiversity support. This study aims to analyze species diversity at various vegetation growth stages and estimate aboveground carbon stocks in the coastal forest of Negeri Hatusua, Kairatu District, West Seram Regency, Maluku. Diversity analysis was conducted using the Shannon-Wiener index, while carbon stock estimation was carried out using non-destructive and destructive methods, covering trees, necromass, understory vegetation, and litter. The results show that the seedling stage has the highest diversity value (H’ = 2.48), followed by the sapling (H’ = 2.18), tree (H’ = 1.59), and pole (H’ = 1.22) stages. Vegetation density reflects the natural regeneration pattern of the forest, with seedlings reaching 130,500 individuals/ha, but significantly decreasing at the sapling (1,920 individuals/ha), pole (460 individuals/ha), and tree (100 individuals/ha) stages. The total aboveground carbon stock was found to be 89.41 tons/ha, with trees serving as the most significant carbon reservoir (83.87 tons/ha or 93.81% of the total carbon). In comparison, carbon dioxide sequestration reached 327.83 tons/ha equivalent.
Co-Authors Abdan Sukur Ely Abdul Latupono Andjela Sahupala Andjela Sahupala Andjela Sahupala Andri Tuhumury Billy Gilbert Anthonius Boreel, Aryanto Christofer Wattimena Cornelia Marietje Aneke Wattimena Creysmen Ginesio Pentury Demianus Tamala Donald Dias Ega, La Elfrida Ratnawati Esther Kembauw Febian Filiph Tetelay Ferdinandus, Stenly Jacobus Fredy Hendry Louhenapessy Fredy Hendry Louhenapessy Gun Mardiatmoko Hendrina Lelloltery Herman - Siruru Inta P. N. Damanik Iskar Iskar Iskar, Iskar Jan W. Hatulesila Jimmy Johanson Fransz Jimmy Johanson Fransz Jimmy Titarsole Johan M. Matinahoru Labetubun, Agung Herat Leonard Dantje Liliefna Leonard Dantje Liliefna Lesly Latupapua Lieke Tan Loppies, Ronny Louhenapessy, Fredy Hendry Lydia Riekie Parera Marthini Kristina Lesilolo Meilvis E. Tahitu Miranda Hadijah Moda Talaohu Moda Talaohu Moh Firdaus Rahawarin Muhammad Faisal Noel Bernard Paembonan, Samuel Arung Putu Oka Ngakan Queen Athalia Deborah Rante Regar, Erfendi Renwarin, Nur Muhammad Risma Illa Maulany Rohny Setiawan Maail Seipalla, Billy Setiani Br Ginting Siahaya, Ludia Sinay, Lexy J. Sintia Cornelia Br Gurusinga Siruru, Herman Sofia Mustamu Soselisa, Fanny Talaohu, Moda Tetelay, Febian F Tupan, Johan M. Wenno, Meiske Yali Joko Istia, Yali Joko Istia Yatim, Hertasning Yulianus Dominggus Komul