STRUKTUR KOMUNITAS DAN ASOSIASI LAMUN (Seagrass) DI PERAIRAN PANTAI RUA PULAU TERNATE PROVINSI MALUKU UTARA

Subur, Riyadi

doi:10.29303/jbt.v13i1.73

Cited by 8 publications

(9 citation statements)

References 5 publications

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“…Where: Rdi = Composition of i-th type (%); Ni = Total number of i-th individuals (stands) in a quadrant transect; ∑ = The total number of individuals of the whole species. The distribution pattern of seagrass and Mollusk species was determined by calculating the Morista Dispersion index [1], with the equation:…”

Section: Discussionmentioning

confidence: 99%

“…Miang Besar Island provides the potential for productive natural resources such as mangrove forests, seagrass beds, coral reefs and fisheries potential. The waters of Miang Besar Island are one of the widely found seagrass field distribution areas, considering the importance of seagrass ecosystems so much that it is necessary to increase attention to seagrass ecosystems [1].…”

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confidence: 99%

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Association of mollusks and seagrass plants in Miang Besar Island, Kutai Timur Regency

Kaharuddin,

Imanuddin,

Harmiati

2023

IOP Conf. Ser.: Earth Environ. Sci.

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This research to determine the level of associet between mollusks and seagrass plants on Miang Besar Island. this research was conducted in june 2020 using random non sampling method consisting of 12 sampling points. For the retrieval of seagrass and mollusk data using the method of transek squares measuring 1x1 m2. testing the association between 2 types using. Contingency table 2 x 2 to determine the association level between 2 species with the Jaccard index. The association between seagrass and mollusk species was analyzed into 3 groups. positive associations are 31 pairs, negative associations consist of 30 pairs and unrelated associations consist of 35 pairs.

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Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

Association of mollusks and seagrass plants in Miang Besar Island, Kutai Timur Regency

Kaharuddin,

Imanuddin,

Harmiati

2023

IOP Conf. Ser.: Earth Environ. Sci.

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“…Seagrass habitats under high-intensity pressure have the potential to experience direct and indirect threats. Seagrass ecosystems are under pressure from human activities, such as the disposal of organic and inorganic household waste from coastal settlements, which can indirectly affect seagrasses (Subur et al, 2013). The local government needs to take action by drafting regulations on household waste management and educating the public that the West Likupang area is part of the Special Economic Zone in the tourism and cultural sectors.…”

Section: Direct Damage To Seagrass Ecosystemsmentioning

confidence: 99%

Health Status of Seagrass Meadows Around the Special Economic Zone (SEZ), West Likupang, North Sulawesi

Satriani,

Imran,

Kurniawan

et al. 2024

jppipa, pendidikan ipa, fisika, biologi, kimia

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Seagrass ecosystems offer valuable ecosystem services but are highly vulnerable to physical damage caused by human activities and rapid environmental change. Currently, there is very limited information available on monitoring and reporting the health of seagrass beds in Indonesian waters. This study aims to assess the species composition, density, diversity index, percentage of seagrass cover, health condition, and identification of threats to seagrass ecosystems around the West Likupang Special Economic Zone (SEZ), North Sulawesi. The method used was a seagrass watch with line transects and quadrant-shaped frames measuring 50x50 cm2. Transect lines were established through the seagrass ecosystem area at 50 m. There were three line transects at each station 25 m apart. Quadrant frame measuring 50x50 cm2. West Likupang has eight seagrass species including C. rotundata, E. acoroides, H. pinifolia, H. uninervis, H. ovalis, O. serrulata, S. isoetifolium, dan T. hemprichii. The health status of the seagrass is currently healthy, with a dense percentage of coverage. The identification of potential risks from anthropogenic activities such as the household disposal of waste at sea, gleaning, the use of boat anchors and propellers, and the construction of infrastructure in coastal areas, such as hotels and harbonurs, pose significant threats.

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“…Pola sebaran mengelompok menandakan suatu jenis lamun hanya ditemukan pada kondisi lingkungan yang sesuai dengan batas toleransinya. Hal ini sesuai dengan (Subur, 2013) bahwa sebaran lamun sangat ditentukan oleh persyaratan tumbuh dari lamun spesies tertentu.…”

Section: Hasil Dan Pembahasanunclassified

Struktur Komunitas dan Estimasi Tutupan Lamun Di Perairan Mrican, Kemujan, Taman Nasional Karimunjawa, Jepara

2022

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Ekosistem lamun merupakan salah satu ekosistem bahari yang produktif sebagai habitat, tempat pemijahan dan feeding ground. Penelitian ini bertujuan mendapatkan kondisi struktur komunitas lamun yang tersebar di perairan Mrican Pulau Kemujan, Karimunjawa. Parameter yang dikaji berupa komposisi jenis, indeks ekologi dan parameter perairan. Luas tutupan lamun didapatkan melalui hasil foto udara yang diolah dengan analisa indeks vegetasi. Penelitian dilakukan dengan metode deskriptif eksploratif dengan penentuan titik lokasi meggunakan metode purposive sampling. Lokasi penelitian dibagi menjadi 3 titik berdasarkan daerah ekosistem lamun dan area wisata. Metode pengambilan sampel lamun dengan metode line transeck dengan alat bantu transeck kuadrat. Pengambilan foto udara menggunakan wahana drone dengan aplikasi pix4d. Komposisi jenis spesies lamun yang ditemukan sebanyak 4 spesies, yaitu Enhalus acoroides, Thalassia hemprichii, Cymodocea rotundata, dan Halodule uninervis. Pola sebaran lamun tiap jenis mengelompok sedangkan lamun jenis E. Acoroides merata pada stasiun 3. Nilai tutupan lamun tertinggi terdapat pada stasiun 2 (21,3%); dengan rata – rata penutupan 17,02%. Kerapatan tertinggi terdapat di stasiun 1 spesies E. Acoroides. Keanekaragaman lamun menghasilkan nilai rendah dan kategori sedang. Indeks keseragaman kategori sedang terdapat pada stasiun 1 sedangkan kategori tinggai pada stasiun 2 dan 3. Indeks dominansi dari ke-3 stasiun menunjukkan tidak adanya dominasi yang terjadi di setiap stasiun. Estimasi tutupan lamun dengan foto udara dengan areal studi 4,68 ha adalah seluas 16.210 m², sehingga estimasi tutupan lamun di perairan Pantai Mrican, Taman Nasional Karimunjawa sebesar 35%. Seagrass ecosystem is one of the productive marine ecosystems as a habitat, spawning ground and feeding ground. This study aims to obtain the structural conditions of seagrass communities scattered in the waters of Mrican Kemujan Island, Karimunjawa. The parameters studied were species composition, ecological index and water parameters. The area of seagrass cover was obtained through the results of aerial photographs which were processed by analysis of the vegetation index. The research was conducted using an exploratory descriptive method with the determination of the location points using the purposive sampling method. The research location is divided into 3 points based on the seagrass ecosystem area and tourist area. Seagrass sampling method refers to the LIPI method with a quadrant line transect tool. Taking aerial photos using drone rides with the pix4d application. There were 4 species of seagrass species composition, namely Enhalus acoroides, Thalassia hemprichii, Cymodocea rotundata, and Halodule uninervis. The distribution pattern of each type of seagrass is clustered, while the seagrass species of E. acoroides are evenly distributed at station 3. The highest seagrass cover value is found at station 2 (21.3%); with an average closing of 17.02%. The highest density was found at station 1 species of E. acoroides. Seagrass diversity resulted in low scores and medium categories. The medium category uniformity index was found at station 1 while the high category was at stations 2 and 3. The dominance index from the 3 stations showed that there was no dominance that occurred at each station. The estimated seagrass cover using aerial photography with a study area of 4.68 ha is 16,210 m², so that the estimated seagrass cover in the waters of Mrican Beach, Karimunjawa National Park is 35%.

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STRUKTUR KOMUNITAS DAN ASOSIASI LAMUN (Seagrass) DI PERAIRAN PANTAI RUA PULAU TERNATE PROVINSI MALUKU UTARA

Cited by 8 publications

References 5 publications

Association of mollusks and seagrass plants in Miang Besar Island, Kutai Timur Regency

Association of mollusks and seagrass plants in Miang Besar Island, Kutai Timur Regency

Health Status of Seagrass Meadows Around the Special Economic Zone (SEZ), West Likupang, North Sulawesi

Struktur Komunitas dan Estimasi Tutupan Lamun Di Perairan Mrican, Kemujan, Taman Nasional Karimunjawa, Jepara

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