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Hydro-Oceanographic Dynamics in the Rupat Utara Coastal Area Ilham Ilahi; Mubarak Mubarak; Maellynia Mustofa; Novia M. Afianti
Jurnal Natur Indonesia Vol. 22 No. 1 (2024): April
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM) Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jnat.22.1.68-75

Coastal areas are one of the areas that have very potential both functionally and economically as a source of life for the surrounding community. However, if the management of coastal resources does not have sustainability, various problems will arise. Rupat Island is one of the water areas that is a crossing path between countries. Sustainable management of coastal areas must follow planning, utilization, supervision, and control of the impact that will be caused both by humans in utilizing it and the effect of oceanographic phenomena on coastal areas, such as hydro-oceanographic factors. This research aims to analyze the characteristics and factors that cause coastal environmental degradation, as well as the ecological carrying capacity of coastal areas in terms of physical aspects of oceanography. The method used in this research is a survey method, which involves interviews and questionnaires analyzed qualitatively and quantitatively. Data collection was done using a purposive sampling method based on affordability. The resulting bathymetric contours indicate that the waters in the middle of the Malacca Strait have a high depth (40 m) with more inland areas (approaching Rupat Island), and the sea depth decreases. The tides shown are field and secondary tides obtained through the prediction of tidal data by NAOTide software. The results of the graph displayed are very appropriate, which shows that the tidal type of Rupat Utara is a mixed tide inclined to double daily (Mixed Tide Prevailling Semi-diurnal). Current patterns from low to high tide have the same direction, from the northeast towards the southeast, with the highest current velocity occurring in February and the current velocity value above 0.5 m/s. While at high tide towards low tide, the current pattern has the opposite direction, namely from the southeast to the northeast, with the highest current speed occurring in December and above 0.8 m/s. The IKP calculation of the entire research area of Tanjung Punak Village is the area with the highest vulnerability level value, with a GPA value of 1215, and the lowest vulnerability level value in Tanjung Medang Village, with a GPA value of 216. The phenomenon of coastal area damage in the Rupat Utara area is almost found in every observation location, which is caused by the impact of both hydro-oceanographic factors and anthropogenic factors

Analysis of Oil Spill Distribution in Bintan Utara Waters Using Sentinel-1A Satellite Imagery Akhmad Ferdinan Hairo; Mubarak Mubarak; Dessy Yoswaty; Bintal Amin; Ilham Ilahi
Jurnal Natur Indonesia Vol. 22 No. 1 (2024): April
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jnat.22.1.48-56

Oil spills are a significant concern in the waters surrounding Bintan, Indonesia primarily due to tankers releasing ballast water before anchoring at the nearby port of Singapore, particularly during the north wind season. The region's high cloud cover presents challenges for detection efforts. However, the utilization of Sentinel-1 Satellite imagery offers a promising solution. This study aims to analyze the spatial distribution of oil spills in North Bintan waters using data collected from the Sentinel-1A satellite between December 2023 and January 2024. The study area includes Semelur Hamlet in Berakit Village, Bintan Regency. The analysis of data consists of oil spill detection and oil content. The results that the wind speed was measured within the range of 2 - 3.8 m/s, while the current speed fell within the range of 0.12 - 0.24 m/s. Additionally, the oil content was found to be less than 1 mg/l. The analysis conducted on the acquisition of December 6 - 24, 2023 revealed the presence of oil spills in four distinct areas. The spill areas were measured to be 1109 m2, 346 m2, 4258 m2, and 1491 m2, respectively. The windrose diagram reveals that the prevailing wind originates from the north northwest, accounting for 16% of the total wind occurrences. The average wind speed within this direction ranges from 3.6 - 5.7 m/s. Notably, the highest wind speed recorded exceeds 11.1 m/s and is observed to come from the north. The relationship between the process of image acquisition and the windrose diagram elucidates the impact of wind on the dynamics of oil spill movement.

Hydro-Oceanographic Dynamics in the Rupat Utara Coastal Area Ilham Ilahi; Mubarak Mubarak; Maellynia Mustofa; Novia M. Afianti
Jurnal Natur Indonesia Vol. 22 No. 1 (2024): April
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jnat.22.1.68-75

Coastal areas are one of the areas that have very potential both functionally and economically as a source of life for the surrounding community. However, if the management of coastal resources does not have sustainability, various problems will arise. Rupat Island is one of the water areas that is a crossing path between countries. Sustainable management of coastal areas must follow planning, utilization, supervision, and control of the impact that will be caused both by humans in utilizing it and the effect of oceanographic phenomena on coastal areas, such as hydro-oceanographic factors. This research aims to analyze the characteristics and factors that cause coastal environmental degradation, as well as the ecological carrying capacity of coastal areas in terms of physical aspects of oceanography. The method used in this research is a survey method, which involves interviews and questionnaires analyzed qualitatively and quantitatively. Data collection was done using a purposive sampling method based on affordability. The resulting bathymetric contours indicate that the waters in the middle of the Malacca Strait have a high depth (40 m) with more inland areas (approaching Rupat Island), and the sea depth decreases. The tides shown are field and secondary tides obtained through the prediction of tidal data by NAOTide software. The results of the graph displayed are very appropriate, which shows that the tidal type of Rupat Utara is a mixed tide inclined to double daily (Mixed Tide Prevailling Semi-diurnal). Current patterns from low to high tide have the same direction, from the northeast towards the southeast, with the highest current velocity occurring in February and the current velocity value above 0.5 m/s. While at high tide towards low tide, the current pattern has the opposite direction, namely from the southeast to the northeast, with the highest current speed occurring in December and above 0.8 m/s. The IKP calculation of the entire research area of Tanjung Punak Village is the area with the highest vulnerability level value, with a GPA value of 1215, and the lowest vulnerability level value in Tanjung Medang Village, with a GPA value of 216. The phenomenon of coastal area damage in the Rupat Utara area is almost found in every observation location, which is caused by the impact of both hydro-oceanographic factors and anthropogenic factors.

Peningkatan Jangkauan Pasar UMKM melalui Kegiatan Bazar di Desa Batu Ampar Ilahi, Ilham; Febriansyah, M.; Legiana, Salsa Bila Pitu; Serviska, Friska; Nofita, Ulti; Pratama, Willi; Nabila, Atika; Putri, Indah Chiara; Abiyyu, Daffa Reyhan; Triasya, Magdalena
Journal of Rural and Urban Community Empowerment Vol. 6 No. 1 (2024): Oktober
Publisher : Fakultas Perikanan dan Kelautan Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/

Kuliah Kerja Nyata UNRI merupakan aktivitas pemberdayaan masyarakat yang dilakukan para mahasiswa dan Dosen Pembimbing Lapangan (DPL). KUKERTA UNRI ini dilaksanakan mulai 15 Juli sampai 23 Agustus 2024 di Desa Batu Ampar Kecamatan Kemuning Kabupaten Indragiri Hilir. Tidak bisa dipungkiri bahwa Desa Batu Ampar memiliki perekonomian yang perlu dikembangkan melalui Usaha Mikro, Kecil dan Menengah (UMKM) dan industri kreatif. Oleh karena itu diperlukan sarana untuk memperluas jangkauan pasar seperti diadakannya kegiatan bazar. Kegiatan bazar sebagai sarana sekaligus pemasaran bertujuan untuk meningkatkan jangkauan pasar dari pelaku UMKM. Metode yang digunakan dalam pelaksanaan kegiatan ini adalah melalui pendekatan partisipatif dan memperlibatkan masyarakat dalam interaksi dan demontrasi kepada pelaku UMKM dan masyarakat Desa Batu Ampar. Hasil yang diperoleh dalam kegiatan ini adalah meningkatkan UMKM masyarakat desa di Desa Batu Ampar dengan perluasan jangkauan pasar para pelaku UMKM.

Review Dampak Penambangan Pasir Laut terhadap Dinamika Abrasi Garis Pantai di Kawasan Pesisir Indonesia Azuga, Nabila Afifah; Zaza A Zahra; Athiyyah Salwaa Andini; Ikhwan Fauzan; Annisa Ulfa Khaira; Ilham Ilahi; Delilla Suhanda; M. Irsyad Nur
Jurnal Riset Kelautan Tropis (Journal Of Tropical Marine Research) (J-Tropimar) Vol 7 No 1 (2025): April
Publisher : Universitas Hang Tuah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30649/jrkt.v7i1.112

Sebagai salah satu negara kepulauan terbesar di dunia, garis pantai Indonesia menjadi garis pantai terpanjang nomor dua dan menjadikan wilayahnya sangat rentan terpapar berbagai dinamika perubahan lingkungan, seperti terjadinya abrasi yang disebabkan oleh faktor alam ataupun antropogenik. Aktivitas penambangan pasir laut menjadi salah satu kegiatan antropogenik yang berdampak besar terhadap fluktuasi di wilayah pesisir. Penambangan pasir laut merupakan proses ekstraksi pasir dari lingkungan laut yang dilakukan oleh sekelompok orang atau masyarakat dengan tujuan memanfaatkan sumber daya tersebut untuk kebutuhan material konstruksi, reklamasi lahan, kebutuhan industri, maupun permintaan ekspor. Kegiatan ini memicu dampak signifikan terhadap dinamika wilayah pesisir, terutama pada proses abrasi pantai. Artikel ini bertujuan untuk mengkaji dampak penambangan pasir laut terhadap perubahan garis pantai di Indonesia melalui pendekatan studi literatur. Hasil penelitian ini menjelaskan bahwa eksploitasi pasir laut secara berlebihan mengakibatkan kerusakan fisik ekosistem wilayah pesisir, termasuk tergerusnya wilayah pantai akibat abrasi, degradasi ekosistem terumbu karang, padang lamun, dan mangrove serta peningkatan risiko bencana seperti potensi bencana banjir dan tanah longsor. Lebih dari itu, kegiatan penambangan pasir laut juga diketahui memicu munculnya konflik sosial-ekonomi pada masyarakat. Artikel ini diharapkan dapat menjadi sumber informasi dalam merumuskan strategi perencanaan dan pengelolaan wilayah pesisir yang berkelanjutan dalam jangka panjang.

ANALYZING THE RELATIONSHIP BETWEEN THE IOD (INDIAN OCEAN DIPOLE) AND ENSO (EL NIÑO–SOUTHERN OSCILLATION) ON SEA SURFACE TEMPERATURE AND RAINFALL VARIABILITY IN THE WATERS OF WEST SUMATERA Maatitawaer, Natasya Debora C; Rifardi, Rifardi; Ilahi, Ilham; Mubarak, Mubarak; Tanjung, Afrizal; Basiluddin, Fadhlan
Asian Journal of Aquatic Sciences Vol. 8 No. 1 (2025): April
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/ajoas.8.1.72-78

This research examines the influence of the Indian Ocean Dipole (IOD) and El Niño–Southern Oscillation (ENSO) on sea surface temperature (SST) and rainfall variability in the coastal waters of West Sumatra over the period 2014–2024. The analysis draws on the Dipole Mode Index (DMI), Niño 3.4 index, SST, and rainfall data, processed using MathWorks and Excel. Regression analysis between field and satellite-derived SST data showed a strong correlation (R² = 0.936), confirming the reliability of satellite data for this study. Findings reveal that positive IOD and El Niño events are generally associated with cooler SSTs and reduced rainfall. In contrast, negative IOD and La Niña phases correspond to warmer SSTs and increased rainfall. The IOD appears to exert a more pronounced influence on SST variability than ENSO. Notably, the combined occurrence of a positive IOD and El Niño amplifies the decline in SST and rainfall. At the same time, the combination of a negative IOD and La Niña enhances increases in these variables. These results highlight the significant role of large-scale climate mode in shaping regional oceanographic and atmospheric conditions in the West Sumatra region.

Teknik Budidaya Azolla microphylla pada Media Ember dan Kolam Terpal Effendi, Irwan; Ilahi, Ilham
Journal of Rural and Urban Community Empowerment Vol. 1 No. 1 (2019): Desember
Publisher : Fakultas Perikanan dan Kelautan Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/

Azolla microphylla merupakan tanaman paku air yang mungkin masih belum terlalu di kenal masyarakat luas. Namun sebenarnya, tanaman paku air ini yang berada di dalam genus Azollaceae ini memiliki beragam manfaat, manfaat tersebut ada beberapa banyak terutama di dalam sektor pertanian dan juga perternakan, yaitu untuk pakan unggas, ikan dan bahkan untuk di jadikan pupuk. Kegiatan budidaya Azolla microphylla ini dilaksanakan di Kampus Marine Centre tepatnya di Laboratorium alam Bioteknologi Kelautan, Jurusan Ilmu Kelautan Fakultas Perikanan dan Kelautan Universitas Riau. Pelaksanaan pelatihan ini digunakan metode ceramah, diskusi dan langsung demonstrasikan kepada para mahasiswa dan dosen. Kegiatan ini diawali dengan penyuluhan tentang potensi Azolla microphylladengan menjelaskan tentang Teknik budidaya Azolla microphyllaserta manfaat dalam bidang perikanan.penanaman bibit Azolla microphylla terpal dan ember ketercapaian kegiatan terhadap tingkat tumbuh Azolla microphylla mencapai 80% dari total jumlah penanaman bibit yang dilakukan pada kolam terpal dan ember. Sedangkan 20% mengalami kegagalan yang diakibatkan faktor ketercapaian cahaya matahari yang masuk kurang terhadap perkembangan Azolla microphylla.

Study of Waves, Currents and Coastline Changes in North Rupat Sub-District, Bengkalis Regency, Riau Fathurrahman, Febri; Mubarak, Mubarak; Nurrachmi, Irvina; Rifardi, Rifardi; Ilahi, Ilham
Jurnal Natur Indonesia Vol. 23 No. 1 (2025): April
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jnat.23.1.42-49

The Malacca Strait, between the island of Sumatra and the Malaysian Peninsula, is classified as an international strait. One of the Indonesian islands in the Malacca Strait is Rupat Island, which is the outermost small island of the Indonesian territory and has a sub-district directly facing the Malacca Strait, namely North Rupat Sub-district resulting in the phenomenon of shoreline change in this area. The location that became the research object is the coastal waters of the North Rupat District. The research aimed to investigate the coastline changes in Rupat Utara over the past 20 years and analyze the physical oceanographic factors affecting the area. The research method used in the research is survey methods. Primary data collected were wave, tidal, and sediment data. Sediment sampling was carried out using a sediment grab at the research stations, with each station being sampled three times. The sediment samples were collected at intervals of 50 meters between sampling points at each station. The results of the analysis of changes in the coastline of North Rupat District carried out using DSAS, and it can be seen that in the period 2003 to 2023, there was a change in the coastline, which was dominated by the accretion process with the highest accretion value at 252.80 m, the lowest abrasion value was -111.29 m, and an EPR value of 2.20 m/year. The current velocity and wave height in these waters are categorized as low. The sediment fraction in this area falls into the sand and mud categories

Analysis of Mangrove Forest Changes Using Satellite Image Data on Rupat Island Agusti, Dinda Roanna; Mubarak, Mubarak; Efriyeldi, Efriyeldi; Rifardi, Rifardi; Mulyadi, Aras; Zulkifli, Zulkifli; Ilahi, Ilham
Jurnal Natur Indonesia Vol. 23 No. 1 (2025): April
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jnat.23.1.50-57

Mangrove forest vegetation is spread across several islands in Indonesia, including Rupat Island. Rupat Island is the outermost island in Riau Province, close to Malaysia, and directly faces international waters, namely the Malacca Strait. Rupat Island has two sub-districts, namely Rupat District and North Rupat District. Rupat Island has a very extensive mangrove forest and has a significant contribution. Monitoring changes in mangrove forests is one way of controlling the mangrove forest ecosystem. This research aims to analyze changes in mangrove vegetation area and mangrove density using the MVI algorithm in 2013 and 2023 on Rupat Island, Bengkalis Regency. This research was conducted in the mangrove forest ecosystem on Rupat Island, Bengkalis Regency, Riau Province. The method used in this research is a survey method with observation and field data collection (ground check). Based on image processing results, the area of mangrove vegetation was 13903.03 ha (2013) to 11748.66 ha (2023) and experienced a reduction of 2154.37 ha. Classification based on MVI in sparse density has an area of 5872.46 ha (2013), decreasing to 3422.05 ha (2023); medium density has an area of 2188.84 ha (2013), increasing to 3334.64 ha (2023), and dense density has an area of 5841.73 ha (2013) reduced to 4991.97 ha. Over 10 years, the density of mangrove vegetation has increased in the medium class and tends to decrease in the sparse and dense classes. Based on calculations, the density of mangroves on Rupat Island falls into the tree category, ranging from 1150.00 ind/ha to 1450.00 ind/ha, which is considered good, and the sapling category ranges from 366.67 ind/ha to 1050.00 ind/ha, which is classified as good.

Imagery And Moral Values Found In “Poems For Palestine” By Palestinian Poets Ilahi, Ilham; Efendi, Dedi; Afrilesa, Rini
Krinok:Jurnal Linguistik Budaya Vol 9, No 1 (2025): Juni
Publisher : Universitas Muara Bungo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36355/krinok.v9i1.1821

This research analyzed about imagery and moral values in three poems of Poems for Palestine by Palestinian Poets. The purposes of this research are to describe the kinds of imagery and the kind of moral values in three poems of “Poems for Palestine by Palestinian Poets”. In this research, the writer used the descriptive qualitative method which was proposed by Strauss and Corbin (1998:11). They state that qualitative research is achieved not by means of quantification or statistical technique to analysis the data. The data is analyzed through some ways: identifying, classifying, analyzing and making conclusion. In this reasearch, the writer used theory of imagery by Perrine (1992) and theory of moral values by Hornby (2010). The result of this research are the writer found about 17 imagery data and followed by 17 data of moral values of the research. All of the data analyzed in those three poems of Poems for Palestine by Palestinian Poets.The 17 data of imagery that the writer found in those three Poems for Palestine by Palestinian Poets, the visual imagery is the dominant imagery in the poems. It is because of the authors really want the world pay attention the condition of the Palestine today. The displacement and destruction of Palestine is seen by many as a deliberate attempt to erase the Palestinian presence and identity from the region. The loss of land and the ongoing displacement of Palestinians are become the first target of Israel and allies. 17 data of moral values that found in poems dominated by 10 data of sympathetic to others. Being sympathetic to others in the poem means feeling and showing understanding and concern for Palestine suffering or misfortune. It involves recognizing and caring for the Palestinian feelings, even if you haven't experienced the same situation

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