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Komunitas fauna makrozoobentos di kawasan reboisasi mangrove Kepulauan Seribu: faktor lingkungan, distribusi, ekologi komunitas, pola sebaran dan hubungannya Syahrial Syahrial; Chandrika Eka Larasati; Dandi Saleky; Muhammad Fauzan Isma
Acta Aquatica: Aquatic Sciences Journal Acta Aquatica: Aquatic Sciences Journal, Vol. 7: No. 2 (October, 2020)
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/aa.v7i2.2456

AbstrakMangrove sangat penting bagi kehidupan biota pesisir dan laut, dimana telah mengalami kerusakan dan juga telah dilakukan rehabilitasi. Kajian komunitas fauna makrozoobentos di kawasan reboisasi mangrove Kepulauan Seribu berdasarkan faktor lingkungan, distribusi, ekologi komunitas, pola sebaran dan hubungannya telah dilakukan pada bulan Maret 2014. Hal ini bertujuan untuk mengetahui faktor lingkungan, distribusi, ekologi komunitas, pola sebaran serta hubungannya. Faktor lingkungan diukur secara in situ, sedangkan fauna makrozoobentosnya dikumpulkan dengan transek garis dan plot. Kemudian ekologi komunitas fauna makrozoobentosnya dilihat berdasarkan indeks keanekaragaman, dominansi maupun keseragaman, sedangkan pola penyebarannya dianalisis dengan indeks morisita serta hubungan antara faktor lingkungan, ekologi komunitas dan pola penyebarannya dianalisis menggunakan regresi linier sederhana. Faktor lingkungan yang diukur tidak begitu berbeda dan juga tidak melebihi baku mutu. Sebanyak 6 spesies dengan 3 kelompok fauna makrozoobentos telah ditemukan di kawasan reboisasi mangrove Kepulauan Seribu. Kemudian indeks keanekaragaman maupun keseragamannya tergolong rendah, dominansinya tergolong tinggi dan pola penyebarannya tergolong seragam (uniform). Selain itu, hubungan antara faktor lingkungan (suhu, salinitas dan DO perairan) dengan indeks keanekaragaman maupun keseragaman berkorelasi positif, sedangkan hubungan antara faktor lingkungan dengan indeks dominansinya berkorelasi negatif. Kemudian korelasi antara faktor lingkungan dengan pola penyebaran berkorelasi positif (membentuk kelompok) dan korelasi antara ekologi komunitas (keanekaragaman dan keseragaman) dengan pola penyebarannya juga berkorelasi positif serta membentuk kelompok.Kata kunci: fauna makrozoobentos; reboisasi mangrove; faktor lingkungan; distribusi; ekologi komunitas; pola sebaran; Kepulauan SeribuAbstractMangrove ecosystems are essential for the life of coastal and marine biota, which have been damaged and have been reforested. Study macrozoobenthos fauna community in mangrove reforestation area of Kepulauan Seribu was conducted in March 2014. This aimed to assess the relationship between environmental factors, distribution, ecology, and distribution patterns of the macrozoobenthos fauna community. The environmental factors were measured in situ, and macrozoobenthos was collected using line and plot transect. The ecology of macrozoobenthos fauna was analyzed based on diversity, uniformity, and dominance index. Distribution patterns were analyzed using Morisita index, and their relationships were analyzed using linear regression. Six species from 3 groups were found in this area. Diversity and uniformity index was classified low, dominance index was high, and the distribution patterns were relatively uniform. In addition, the relationship between the environmental factors (temperature, salinity, and DO) with diversity and uniformity index were positively correlated, and relationship between the environmental factors with dominance index were negatively correlated. The correlation between environmental factors with distribution patterns were positive (form groups), and the correlation between community ecology with distribution patterns were positive.Keywords: community ecology; distribution; Kepulauan Seribu; mangrove reforestation; macrozoobenthos fauna

Kondisi Eksisting Tiram (Bivalvia: Ostreidae) di Perairan Estuari Desa Banda Masen Kecamatan Banda Sakti Kota Lhokseumawe Erlangga Erlangga; Imanullah Imanullah; Syahrial Syahrial; Erniati Erniati; Imamshadiqin Imamshadiqin; Gara Hasonangan Ritonga; Dodi Fanhalen Siregar
Buletin Oseanografi Marina Vol 11, No 2 (2022): Buletin Oseanografi Marina
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/buloma.v11i2.39514

Kajian kondisi eksisting tiram dilakukan pada tiga stasiun pengamatan di perairan estuari Desa Banda Masen (Juli – September 2020). Kajian bertujuan untuk mengetahui faktor lingkungan, distribusi dan biodiversitas, kepadatan, frekuensi pertumbuhan serta karakteristik lingkungan tiram, dimana sampel dikumpulkan dalam plot yang berukuran 1x1 m pada sisi kiri, tengah dan kanan estuari, sedangkan keterkaitan parameter kualitas perairan terhadap kepadatan maupun morfometrik tiram dianalisis berdasarkan Principle Component Analysis (PCA). Hasil kajian memperlihatkan bahwa konsentrasi DO berkisar antara 07,85–07,87 mg/L, suhu 30,00–32,00°C, salinitas 32,50–35,00‰, pH 07,90–08,13, kekeruhan 27,90–28,17 NTU, kecerahan 00,20–00,22 cm, kedalaman 01,20–01,27 m dan intensitas cahaya 449–452 Lux. Selain itu, hasil kajian juga memperlihatkan tiram terdistribusi di semua stasiun pengamatan, terdiri dari dua spesies dengan kepadatan S. cucullata antara 02,33–04,11 ind/m2 dan kepadatan S. echinata antara 02,11–03,56 ind/m2. Untuk frekuensi pertumbuhan morfometrik, panjang cangkang S. cucullata dominannya adalah 04,28–04,91 cm, lebar cangkang 03,48–04,06 cm, berat isi 03,18–04,85 mg dan berat cangkang 15,86–20,43 mg. Selanjutnya untuk frekuensi pertumbuhan morfometrik S. echinata, panjang cangkang dominannya adalah 03,82–04,27 cm, lebar cangkang 02,96–03,41 cm, berat isi 03,12–04,12 mg serta berat cangkang 15,06–19,33 mg, dimana kepadatan maupun berat isi S. cucullata sangat ditentukan oleh intensitas cahaya, salinitas, suhu dan kekeruhan perairan, sedangkan kecerahan perairan kurang memberikan pengaruh yang baik bagi kepadatan maupun berat isi tiram S. cucullata, kecuali bagi pertumbuhan panjang cangkang S. echinata, panjang cangkang S. cucullata, berat isi dan berat cangkang S. echinata. The study of the existing condition of oysters was carried out at three observation stations in the estuary of Banda Masen Village during July until September 2020. The study aims to determine environmental factors, distribution, biodiversity, density, growth frequency and environmental characteristics of oysters. Samples were collected in plots with measuring 1x1 m on the left, middle and right sides of the estuary. Furthermore, the correlation parameters of water quality on density and morphometric of oysters to be analyzed base on Principle Component Analysis (PCA). The results showed that DO concentrations ranged between 07,85–07,87 mg/L, temperature 30,00–32,00°C, salinity 32,50–35,00‰, pH 07,90–08,13, turbidity 27,90–28,17 NTU, brightness 00,20–00,22 cm, depth 01,20–01,27 m and light intensity 449,00–452,00 Lux. In addition, the results of the study also depict that oysters were distributed in all observation stations which consisting of two species with density of S. cucullata and S. echinata between 02,33–04,11 ind/m2 and 02,11–03,56 ind/m2, respectively. The frequency of morphometric growth illustrates the dominant shell of S. cucullata was 04,28–04,91 cm in length, 03,48–04,06 cm in width, and 15,86–20,43 mg in weight with bulk have 03,18–04,85 mg in weight. Furthermore, the frequency of morphometrics growth of S. echinata have dominant shell was 03,82–04,27 cm in length, 02,96–03,41 cm in width, 15.06 –19,33 mg in weight with bulk have 03,12–04,12 mg in weight. The density and weight of the bulk of S. cucullata were largely determined by light intensity, salinity, temperature and turbidity of the waters. Meanwhile, the brightness did not give significant influence except for the length of two species and density also weight of S. echinata.

Penilaian Sumber Pencemar Non Logam di Waduk Asin Pusong Kota Lhokseumawe Berdasarkan Analisis Multivariat Riri Ezraneti; Syahrial Syahrial; Erniati Erniati
Jurnal Kelautan Tropis Vol 24, No 1 (2021): JURNAL KELAUTAN TROPIS
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jkt.v24i1.9617

Human anthropogenic activities have resulted in an important transformation in the aquatic environment for decades, so the study of the assessment of non-metallic pollutant sources in the salty reservoir Pusong in Lhokseumawe City was conducted in October 2020 which was reviewed based on multivariate analysis. The study aims to find out the source of non-metallic pollutants in the salt reservoir waters of Pusong Kota Lhokseumawe with the collection of primary data conducted by observation at five observation stations, where water samples are taken using van dorn water sampler at a depth of ± 0 – 1 m with three repetitions per station. The results showed that non-metallic contaminants of total ammonia nitrogen, nitrate, and phosphate had exceeded the established quality standards (>5.00 mg/L, >0.30 mg/L, >0.008 mg/L and >0.015 mg/L), then based on PCA analysis, eigenvalues of each variable indicate the formation of two new components namely Component 1 consisting of non-metallic nitrate contaminants and total nitrogen ammonia (3.05), while Component 2 consists of non-metallic contaminants total coliform and BOD5 (1.93) with a data diversity of 82.99%. Besides, non-metallic contaminants of total nitrogen ammonia, as well as phosphates, have a significant relationship to temperature parameters, while non-metal nitrate contaminants have significant links to pH parameters, turbidity, and salinity. Furthermore, the complexity of the study area between observation stations based on CA analysis was divided into two groups, the first group consisted of Stations 2, 4, and 5 with non-metallic contaminants source nitrate, BOD5 as well as total coliform, while the second group consisted of Stations 1 and 3 with non-metallic contaminants of total ammonia nitrogen, phosphate, and surfactants. Kegiatan antropogenik manusia telah menghasilkan transformasi penting dalam lingkungan akuatik selama beberapa dekade, sehingga kajian penilaian sumber pencemar non logam di waduk asin Pusong Kota Lhokseumawe dilakukan pada bulan Oktober 2020 yang ditinjau berdasarkan analisis multivariat. Kajian bertujuan untuk mengetahui sumber pencemar non logam di perairan waduk asin Pusong Kota Lhokseumawe dengan pengumpulan data primernya dilakukan secara observasi di lima stasiun pengamatan, dimana sampel air diambil menggunakan van dorn water sampler pada kedalaman ± 0–1 m dengan tiga kali pengulangan setiap stasiunnya. Hasil kajian memperlihatkan bahwa sumber pencemar non logam total amonia nitrogen, nitrat maupun fosfat sudah melebihi baku mutu yang telah ditetapkan (>5.00 mg/L, >0.30 mg/L, >0.008 mg/L dan >0.015 mg/L), kemudian berdasarkan analisis PCA, nilai eigen dari masing-masing variabel mengindikasikan adanya pembentukan dua komponen baru yaitu Component 1 terdiri dari sumber pencemar non logam nitrat dan total amonia nitrogen (3.05), sedangkan Component 2 terdiri dari sumber pencemar non logam total coliform dan BOD5 (1.93) dengan keragaman datanya sebesar 82.99%. Selain itu, sumber pencemar non logam total amonia nitrogen maupun fosfat memiliki hubungan yang signifikan terhadap parameter suhu, sedangkan sumber pencemar non logam nitrat memiliki hubungan yang signifikan terhadap parameter pH, kekeruhan dan salinitas. Selanjutnya, kompleksitas wilayah studi antar stasiun pengamatan berdasarkan analisis CA terbagi atas dua kelompok, kelompok pertama terdiri dari Stasiun 2, 4 dan 5 dengan sumber pencemar non logam nitrat, BOD5 serta total coliform, sedangkan kelompok kedua terdiri dari Stasiun 1 dan 3 dengan sumber pencemar non logam total amonia nitrogen, fosfat serta surfaktan.

Rumput Laut yang Tumbuh Alami di Pantai Barat Pulau Simeulue, Aceh Indonesia: Faktor Lingkungan dan Variasi Geografik Erniati Erniati; Syahrial Syahrial; Imanullah Imanullah; Erlangga Erlangga; Cut Meurah Nurul ‘Akla; Wilman Shobara; Jihad Nasuha; Gara Hasonangan Ritonga; Anggi Mayulina Daulay; Hamdi Romansah; Ibnu Amni; Tambah Lambok Berutu
Jurnal Kelautan Tropis Vol 25, No 1 (2022): JURNAL KELAUTAN TROPIS
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jkt.v25i1.12645

Environmental factors and geographical variations in an ecosystem are important steps in explaining the dynamics of marine communities, a study of seaweed that grows naturally on the west coast of Simeulue Island was conducted with the purpose of learning about the environmental characteristics, geographical variations, and environmental parameters that affect their distribution. The study was conducted in October 2021, and it included 5 observation stations with environmental factors measured in situ and geographic variation data using line transects along 50 m perpendicular to the shoreline and sample plots measuring 1 x 1 m every 10 m. Environmental factors that influence vegetation conditions and geographic variations of seaweed were analyzed using PCA. The study's findings revealed that conditions in the Indian Ocean with a high pH (average 07.72 ± 00.20) with moderate salinity and current velocity (average 32.47‰± 01.72 and 00.32 m/s ± 00.11, respectively) influenced the seaweed vegetation habitat. Then 21 seaweed species were identified, all of which have not been evaluated on the IUCN Red List, and their distribution is relatively rare, with a frequency of only 20%, and the seaweed zoning found at a depth of 0 - 150 cm at the lowest tide and a distance of up to 40 m inland from the edge. Furthermore, the distribution of seaweed on Simeulue Island's west coast is largely determined by DO conditions, salinity, and current velocity, whereas pH and temperature have less influence on seaweed distribution. Faktor lingkungan dan variasi geografik di suatu ekosistem merupakan langkah penting dalam menjelaskan dinamika komunitas laut, sehingga kajian rumput laut yang tumbuh alami di Pantai Barat Pulau Simeulue dilakukan dengan tujuan untuk mengetahui karakteristik lingkungan, variasi geografik dan parameter lingkungan yang mempengaruhi distribusinya. Kajian dilaksanakan pada bulan Oktober 2021 yang terdiri dari 5 stasiun pengamatan dengan faktor lingkungannya diukur secara in situ dan data variasi geografiknya menggunakan transek garis sepanjang 50 m tegak lurus garis pantai serta dibuat petak contoh berukuran 1 x 1 m disetiap 10 m dan faktor lingkungan yang mempengaruhi kondisi vegetasi maupun variasi geografik rumput lautnya dianalisis menggunakan PCA. Hasil kajian memperlihatkan bahwa habitat vegetasi rumput lautnya dipengaruhi oleh kondisi Samudera Hindia dengan konsentrasi pH perairannya tergolong tinggi (rata-rata 07.72 ± 00.20) dan konsentrasi salinitas maupun kecepatan arusnya tergolong sedang (rata-rata 32.47‰ ± 01.72 dan rata-rata 00.32 m/s ± 00.11), kemudian rumput lautnya teridentifikasi sebanyak 21 spesies yang keseluruhannya belum terevaluasi di IUCN Red List dan distribusinya tergolong jarang dengan frekuensi relatifnya kecil dari 20% serta zonasi rumput lautnya ditemukan pada kedalaman ± 0 – 150 cm saat surut terendah dan berjarak hingga ± 40 m ke arah daratan dari tubir. Selanjutnya, untuk distribusi rumput laut di pantai Barat Pulau Simeulue sangat ditentukan oleh kondisi DO, salinitas dan kecepatan arus, sedangkan parameter pH dan suhu kurang memberikan pengaruh yang baik terhadap distribusi rumput lautnya.

PENGARUH KARAKTERISTIK LINGKUNGAN TERHADAP MAKROZOOBENTOS DI KAWASAN REBOISASI MANGROVE KEPULAUAN SERIBU, INDONESIA Syahrial Syahrial; Rika Anggraini; Agus Putra Abdul Samad; Nur Ikhsan; Dandi Saleky; La Ode Abdul Fajar Hasidu
JURNAL ENGGANO Vol 5, No 2
Publisher : Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/jenggano.5.2.233-248

Fauna bentik (makrozoobentos) telah dianggap sebagai salah satu kriteria untuk menilai keberhasilan program restorasi mangrove. Kajian korelasi karakteristik lingkungan terhadap makrozoobentos di kawasan reboisasi mangrove Kepulauan Seribu telah dilakukan pada bulan Maret 2014. Hal ini bertujuan untuk mengetahui pengaruh yang diakibatkan oleh karakteristik lingkungan (parameter fisika kimia perairan) terhadap kepadatan makrozoobentosnya. Data biota makrozoobentos di kawasan reboisasi mangrove Kepulauan seribu dikumpulkan dengan membuat transek garis dan plot yang ditarik dari titik acuan (tegakan mangrove terluar) dan tegak lurus garis pantai sampai ke daratan, dimana pengamatan dilakukan di tiga stasiun (pulau). Sebanyak 6 famili dan 6 spesies makrozoobentos telah ditemukan di kawasan reboisasi mangrove Kepulauan Seribu. Komposisi dan kepadatan spesies tertingginya adalah Littoraria scabra. Karakteristik lingkungan yang diukur tidak begitu berbeda antar stasiun serta juga tidak melebihi ambang batas baku mutu. Semakin rendah konsentrasi salinitas dan DO, maka kepadatan makrozoobentosnya semakin tinggi, sedangkan semakin tinggi konsentrasi pH perairan, maka kepadatan makrozoobentosnya semakin menurun. Kemudian parameter suhu dengan kepadatan makrozoobentos tidak memiliki pengaruh.THE EFFECT OF ENVIRONMENTAL CHARACTERISTICS OF MAKROZOOBENTOS IN MANGROVE REFORESTATION AREA OF SERIBU ISLANDS, INDONESIA. Benthic fauna (macrozoobenthos) has been considered as one of the criteria for assessing the success of a mangrove restoration program. A correlation study of environmental characteristics of macrozoobenthos in the Seribu Islands mangrove reforestation area was carried out in March 2014. It aims to determine the effect caused by environmental characteristics (water physical-chemical parameters) on its macrozoobenthos density. Data of macrozoobenthos biota in the Seribu Islands mangrove reforestation area were collected by making line transects and plots drawn from the reference point (outermost mangrove stands) and perpendicular to the coastline to the mainland, where observations were made at three stations (islands). Six families and six macrozoobenthos species have been found in the Seribu Islands mangrove reforestation area. The composition and density of the highest species were Littoraria scabra. The measured environmental characteristics were not very different between stations and also did not exceed the quality standard threshold. The lower the salinity and DO concentration, the higher the density of macrozoobenthos, while the higher the concentration of water pH, the lower the density of macrozoobenthos. Then the temperature parameters with macrozoobenthos density had no effect.

Profil Kawasan Reboisasi Mangrove Kepulauan Seribu Berdasarkan Karakteristik Lingkungan dan Fauna Makrobentik Terkait Febrianti Lestari; Syahrial Syahrial; Rika Anggraini; Yudho Andika; Cut Meurah Nurul 'Akla; Agus Putra Abdul Samad
Jurnal Sumberdaya Akuatik Indopasifik Vol 5 No 3 (2021): Agustus
Publisher : Fakultas Perikanan dan Ilmu Kelautan, Universitas Papua

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46252/jsai-fpik-unipa.2021.Vol.5.No.3.166

Macrobenthic fauna is often used as a bioindicator of environmental quality. However, information about the environmental characteristics and the existence of macrobenthic fauna in the mangrove reforestation area is still very limited. The study of the profile of the Seribu Island mangrove reforestation area based on the characteristics of the macrobenthic environment and fauna was carried out in March 2014. The aim of this study is to determine the ecological conditions of the waters around the Seribu Island mangrove reforestation area. To find out the relationship between environmental characteristics and macrobenthic fauna with observation stations carried out by statistics on Correspondence Analysis (CA), while the environmental characteristics that determine macrobenthic fauna and their relationships are carried out with Principal Component Analysis (PCA) statistics and simple linear regression. The results of the study show that the concentration of measured environmental characteristics is not very different between stations and does not exceed the quality standard threshold for marine life. Then the macrobenthic fauna found consisted of 6 species with the highest density at Station 3 (05.00 ind/m2) and the lowest at Station 1 (02.00 ind/m2). At Station 1 the pH and temperature concentration is very high, while Station 2 and 3 have high salinity concentrations. Macrobenthic fauna Atilia (Columbella) scripta, Metopograpsus latifrons, Littoraria scabra, Saccostrea cucculata, and Cardisoma carnifex can be associated with mangroves at all stations. In addition, the environmental characteristics that determine the presence of C. carnifex macrobenthic fauna are pH parameters, where the higher the pH concentration, the lower the density of C. carnifex. Then the environmental characteristics that determine the presence of the macrobenthic fauna of S. cucculata, M. latifrons and A. scripta are determined by DO (Dissolved Oxygen) and salinity parameters namely the lower DO (Dissolved Oxygen) concentration and salinity, the higher the density of S. cucculata, M. latifrons and A. scripta.

Komunitas fauna makrozoobentos di kawasan reboisasi mangrove Kepulauan Seribu: faktor lingkungan, distribusi, ekologi komunitas, pola sebaran dan hubungannya Syahrial Syahrial; Chandrika Eka Larasati; Dandi Saleky; Muhammad Fauzan Isma
Acta Aquatica: Aquatic Sciences Journal Acta Aquatica: Aquatic Sciences Journal, Vol. 7: No. 2 (October, 2020)
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/aa.v7i2.2456

AbstrakMangrove sangat penting bagi kehidupan biota pesisir dan laut, dimana telah mengalami kerusakan dan juga telah dilakukan rehabilitasi. Kajian komunitas fauna makrozoobentos di kawasan reboisasi mangrove Kepulauan Seribu berdasarkan faktor lingkungan, distribusi, ekologi komunitas, pola sebaran dan hubungannya telah dilakukan pada bulan Maret 2014. Hal ini bertujuan untuk mengetahui faktor lingkungan, distribusi, ekologi komunitas, pola sebaran serta hubungannya. Faktor lingkungan diukur secara in situ, sedangkan fauna makrozoobentosnya dikumpulkan dengan transek garis dan plot. Kemudian ekologi komunitas fauna makrozoobentosnya dilihat berdasarkan indeks keanekaragaman, dominansi maupun keseragaman, sedangkan pola penyebarannya dianalisis dengan indeks morisita serta hubungan antara faktor lingkungan, ekologi komunitas dan pola penyebarannya dianalisis menggunakan regresi linier sederhana. Faktor lingkungan yang diukur tidak begitu berbeda dan juga tidak melebihi baku mutu. Sebanyak 6 spesies dengan 3 kelompok fauna makrozoobentos telah ditemukan di kawasan reboisasi mangrove Kepulauan Seribu. Kemudian indeks keanekaragaman maupun keseragamannya tergolong rendah, dominansinya tergolong tinggi dan pola penyebarannya tergolong seragam (uniform). Selain itu, hubungan antara faktor lingkungan (suhu, salinitas dan DO perairan) dengan indeks keanekaragaman maupun keseragaman berkorelasi positif, sedangkan hubungan antara faktor lingkungan dengan indeks dominansinya berkorelasi negatif. Kemudian korelasi antara faktor lingkungan dengan pola penyebaran berkorelasi positif (membentuk kelompok) dan korelasi antara ekologi komunitas (keanekaragaman dan keseragaman) dengan pola penyebarannya juga berkorelasi positif serta membentuk kelompok.Kata kunci: fauna makrozoobentos; reboisasi mangrove; faktor lingkungan; distribusi; ekologi komunitas; pola sebaran; Kepulauan SeribuAbstractMangrove ecosystems are essential for the life of coastal and marine biota, which have been damaged and have been reforested. Study macrozoobenthos fauna community in mangrove reforestation area of Kepulauan Seribu was conducted in March 2014. This aimed to assess the relationship between environmental factors, distribution, ecology, and distribution patterns of the macrozoobenthos fauna community. The environmental factors were measured in situ, and macrozoobenthos was collected using line and plot transect. The ecology of macrozoobenthos fauna was analyzed based on diversity, uniformity, and dominance index. Distribution patterns were analyzed using Morisita index, and their relationships were analyzed using linear regression. Six species from 3 groups were found in this area. Diversity and uniformity index was classified low, dominance index was high, and the distribution patterns were relatively uniform. In addition, the relationship between the environmental factors (temperature, salinity, and DO) with diversity and uniformity index were positively correlated, and relationship between the environmental factors with dominance index were negatively correlated. The correlation between environmental factors with distribution patterns were positive (form groups), and the correlation between community ecology with distribution patterns were positive.Keywords: community ecology; distribution; Kepulauan Seribu; mangrove reforestation; macrozoobenthos fauna

KLASIFIKASI SENJATA API MELALUI SUARA MENGGUNAKAN TRANSFORMASI WAVELET Fadlisyah Fadlisyah; Syahrial Syahrial
TECHSI - Jurnal Teknik Informatika Vol 6, No 2 (2014)
Publisher : Teknik Informatika Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/techsi.v6i2.173

Classification of guns through sound using Wavelet Transform is a branch of sound processing can be used to identify several types of gunfire. This study uses wavelet transformation for the recognition and classification of firearms training through the noise using Wavelet Transform. The system was then tested by simulating it on the training data and test data to generate the percentage of recognition and classification of the sound of gunfire. Experiments done with several changes in parameter values to obtain the best percentage of recognition and classification. The results of this study in the form of gunfire were classified in accordance with the known brand guns from the calculation of energy using Wavelet Transformation.

Gastropoda Telescopium telescopium (Linnaeus, 1758) di Hutan Mangrove Desa Cut Mamplam Provinsi Aceh, Indonesia Ida Marina Harahap; Syahrial Syahrial; Erniati Erniati; Erlangga Erlangga; Imanullah Imanullah; Riri Ezraneti
Jurnal Kelautan Tropis Vol 25, No 2 (2022): JURNAL KELAUTAN TROPIS
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jkt.v25i2.13353

The growth of an organism can provide fundamental ecological data and serve as a primary parameter for describing an organism's population dynamics. Telescopium telescopium gastropods were studied in September 2021 using purposive sampling in the mangrove forest of Cut Mamplam Village, Aceh Province. This study aims to provide fundamental data for mangrove management in Indonesia. Data were collected by creating a 40 m perpendicular to the coastline line transect, followed by 10 x 10 m sample plots and five 1 x 1 m sub plots. Following the collection of samples, additional analysis of the density, length and weight relationship, demographic structure, spatial distribution patterns based on the Morisita index, and growth characteristics were conducted as unique characteristics when compared to T. telescopium in other areas analyzed using PCA. The study's findings indicated that the density was low (< 7 ind/m2), the allometric length and weight relationship was negative (b < 3), the dominant growth demographic structure was mature (dominant SL 79.36 – 86.34 mm), the distribution pattern was clustered (Iδ = 02.75), and the BT, BWL, and AL morphometrics, in particular, had a variance of 95.91%. Pertumbuhan suatu organisme dapat menyediakan data ekologi dasar dan merupakan salah satu parameter yang utama dalam mengambarkan dinamika populasi suatu organisme, sehingga kajian gastropoda Telescopium telescopium di hutan mangrove Desa Cut Mamplam Provinsi Aceh dilakukan menggunakan purposive sampling pada bulan September 2021 dengan tujuan sebagai data dasar dalam pengelolaan mangrove di Indonesia, dimana data dikumpulkan dengan cara membuat transek garis sepanjang 40 m tegak lurus garis pantai, kemudian dibuat petak-petak contoh berukuran 10 x 10 m dan selanjutnya dibuat sub plot berukuran 1 x 1 m sebanyak 5 sub plot. Setelah sampel terkumpul, selanjutnya dilakukan analisis kepadatan, hubungan panjang berat tubuh, struktur demografi, pola penyebaran spasial berdasarkan indeks Morisita dan karakteristik pertumbuhannya sebagai penciri khusus bila dibandingkan dengan T. telescopium di kawasan lain yang dianalisis menggunakan PCA. Hasil kajian memperlihatkan bahwa kepadatannya rendah (< 7 ind/m2), hubungan panjang beratnya allometrik negatif (b < 3), struktur demografi pertumbuhan yang dominan ditemukan tergolong dewasa (SL dominan 79.36 – 86.34 mm), pola penyebarannya mengelompok (Iδ = 02.75) dan morfometrik BT, BWL maupun AL sebagai penciri khususnya memiliki varian 95.91%.

Optimum Risk-Based Management on the Lhokseumawe City Ring Road which is Vulnerable to Coastal Abrasion Teuku Muhammad Ridwan; Amri Amri; Syahrial Syahrial; A F Ayob
International Journal of Engineering, Science and Information Technology Vol 2, No 2 (2022)
Publisher : Master Program of Information Technology, Universitas Malikussaleh, Aceh Utara, Indonesia

The city of Lhokseumawe, which is one of the cities that has a topography such as a bay and a very busy area as the center of government, business, and services, has also experienced congestion. In 2012, the Lhokseumawe City Government has started planning to build a 7.6 Kilometer Lhokseumawe City Ring Road, starting from Sp.Kandang – Pusong and Sp. Lestari – Loskala. The ring road construction is along the shores of Ujong Blang Beach and KP3, where Ujong Blang Beach and KP3 since 1998 until now continue to experience abrasion. The purpose of this study was to determine the level of abrasion speed of Ujong Blang Beach and KP3 Beach and risk factors other than abrasion for an optimal risk-based management model approach to the Lhokseumawe City Ring Road as coastal infrastructure that is prone to abrasion and other risks. The method used to determine the abrasion rate is based on Landsat ETM+ (Enhanced Thematic Mapper) satellite data for a period of 25 years (1995 – 2020) which is analyzed by the Digital Shoreline Analysis System. The results showed that the magnitude of the abrasion speed of Ujong Blang Beach and KP3 Beach was -2.11 m/year and the farthest accretion occurred on the coast on transect 83 with an accretion distance of 111.34 m or around 4.45. Meanwhile, other factors were sea waves. with a period range of 2.33-10.25 s with an average of 4.57 s. Furthermore, the height of the coastal topography ranges from 0.00-8.60 m with an average of 4.30 m and the coastal slope observed at 8 observation locations obtained a coastal slope range of 2.90-4.47% with an average slope of 3,76%. The optimum risk-based management carried out by the ring road manager is the ALARP-principles approach to control very high to high risk (ALARP Zone), namely by building a preventive building in the form of a conventional type of breakwater with minimal handling costs to mitigate a greater impact on the environment. Damage to the Lhokseumawe City Ring Road if the risk occurs during the life of the road plan.

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