Keanekaragaman Lamun Dan Makrozoobentos Sebagai Indikator Kondisi Perairan Pantai Sindhu, Sanur, Bali

Wijana, I Made Sara; Ernawati, Ni Made; Pratiwi, Made Ayu

doi:10.24843/ejes.2019.v13.i02.p11

Cited by 3 publications

(4 citation statements)

References 1 publication

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“…The Ecology Index consists of the diversity, uniformity, and dominance indexes. The diversity, uniformity, and dominance index can describe a community's stability level in an ecosystem [37]. The highest ecological index value in the waters of Siwak Bay is the Diversity index, and the lowest is the dominance index.…”

Section: Ecological Indexmentioning

confidence: 99%

“…A high uniformity index means that the number of individuals of one species from another is not much different, and environmental conditions are stable. If the uniformity index value is small, the more significant the difference in number between species (dominance), and vice versa if the uniformity index value is more excellent, the difference in number between species is smaller, so that the tendency to dominance by certain types does not exist [37].…”

Section: Figure 7 Ecological Indexmentioning

confidence: 99%

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Seagrass Meadow Conditions in Coastal Waters of Siwak Bay Central Lombok

Destiana,

Candri,

Ahyadi

2024

J. Pijar.MIPA

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Seagrass is a flowering plant thriving in shallow sea waters and estuaries. Seagrass ecosystems are essential in supporting life in shallow seas as primary producers, biota habitats, sediment trappers, and nutrient trappers. Environmental factors affecting seagrass growth include temperature, salinity, pH, and substrate. The study was conducted in March-June 2023. This study aimed to determine the type and condition of seagrass beds in the waters of Siwak Bay. The method used in this study is the quadrant transect method at three research stations. There are seven types of seagrass identified, namely Thalassia hemprichii, Halophila ovalis, Cymodocea rotundata, Cymodocea serrulata, Halodule pinifolia, Halodule uninervis, and Syringodium isoetifolium. The percentage of total seagrass cover is at a value of 37%-61%, indicating that the condition of seagrass beds in the waters of Siwak Bay is included in the unhealthy category. The highest species density found at station III in Halodule pinifolia was 483.5 stands/m², and the lowest was found at stations II and III in Thalassia hemprichii and Cymodocea serrulata with 0 stands/m². The average density value of seagrass beds in the waters of Siwak Bay is very dense. The highest type frequency was found in Cymodocea rotundata, with a value of 2.53. The tallest species diversity and diversity index was found at station II with values of 1.56 and 0.8, respectively. In contrast, the highest dominance index was found at station I, with a value of 0.44.

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Section: Ecological Indexmentioning

confidence: 99%

Section: Figure 7 Ecological Indexmentioning

confidence: 99%

Seagrass Meadow Conditions in Coastal Waters of Siwak Bay Central Lombok

Destiana,

Candri,

Ahyadi

2024

J. Pijar.MIPA

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“…Indeks keanekaragaman, keseragaman dan dominansi diketahui mampu menunjukkan tingkat kestabilan suatu komunitas dalam suatu ekosistem khususnya pada padang lamun. Ketiga indeks tersebut juga dapat menggambarkan kondisi lingkungan karena kondisi lingkungan sangat berpengaruh terhadap tingkat spesies sebagai komponen terkecil penyusunan populasi yang membentuk komunitas (Wijana et al 2019). Rata-rata indeks keanekaragaman lamun di ketiga lokasi pengamatan sebesar 0,50 yang termasuk dalam kategori indeks keanekaragaman rendah.…”

Section: Indeks Keanekaragaman Keseragaman Dan Dominansiunclassified

Diversity of Seagrass Species in The Conservation Area of The Sawu Sea Marine National Park (TNP)

Silaban,

Fakhrurrozi,

Juraij

et al. 2023

JBT

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The Sawu Sea is an important habitat for dolphins, dugongs, manta rays and turtles. Sabu Island is one of the locations included in the Sawu Marine National Park area with considerable seagrass potential. The purpose of this study was to determine the health condition and community structure of seagrass on Sabu Island. This study used line transect, square transect, and random transect methods. The results of observations found 8 species, the most common types of seagrass were Thalassia hemprichii, Cymodocea rotundata, Halodule uninervis, Halophila ovalis, and Syringodium isoetifolium. A type of seagrass that is rarely found is Cymodocea serrulate which is only found in Loborai. The highest species density at Bodae station is Halodule unservices, and the lowest at Bodae station is Enhalus acoroides. The diversity index of seagrass species at the three stations is included in the low species diversity category. Seagrass species uniformity index is included in the medium community category. The dominance index of seagrass species at 3 stations is in the low dominance category. The highest coverage was Halodule uninervis with a value of 42.74% and the lowest was Enhalus acoroides with a value of 0.69%. The extent of seagrass cover at each of the Bodae, Laborai, and Keliha locations is 69.09%, 62%, and 66%, respectively. The highest Importance Value Index was found in Halodule uniservis, namely 138.00%, 30.55%, 96.80%, and the lowest was in Cymodocea serrulate. Overall the health condition of the seagrass beds at the observation location is included in the healthy category.

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“…Skala kerapatan dapat dikategorikan menjadi lima sebagai acuan dalam mengambil sampel menggunakan transek kuadrat (Gosari & Haris, 2012). Penilaian tutupan lamun menggunakan kuadran 50 cm x 50 cm (Wijana et al, 2019). Sedangkan perhitungan persentase penutupan lamun dilakukan dengan metode seagrass percent cover standards.…”

Section: Materi Dan Metodeunclassified

Pengukuran Stok Karbon Ekosistem Lamun Di Kawasan Taman Nasional Baluran, Jawa Timur

Zulkifli¹,

Triyono²,

Suharti³

et al. 2022

J. Kel. Trop.

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Climate change caused by various activities of human activity has produced carbon dioxide gas affecting global warming. Seagrass ecosystem has the ability to absorb and store large quantities of carbon that can reduce carbon emissions. Objectives of this study is to assess seagrass population structure, assess carbon deposits estimation and water quality parameters. The method used in this research is purposive sampling method and location determination used line Transect quadrant method which refers to LIPI method. Carbon measurements in seagrass samples used LOI method. Seagrass species found in the waters of Baluran National Park are Enhalus acoroides, Thalassia hemprichii, Cymodocea rotundata, Cymodocea serrulata, Syringodium isoetifolium, Halophila minor, Halophila ovalis dan Halodule uninervis. The seagrass Enhalus acoroides has a highest biomass value and an estimate of carbon deposits 37.817 gC/m2. The total estimate of the highest carbon stock is obtained at the bottom of the substrate 40.063 ton. Perubahan iklim yang disebabkan oleh berbagai aktifitas kegiatan manusia menghasilkan gas karbon diokasida yang berdampak pada pemanasan global. Ekosistem padang lamun memiliki kemampuan untuk menyerap dan menyimpan karbon dalam jumlah besar yang dapat mengurangi emisi karbon. Tujuan penelitian ini adalah: 1) mengkaji struktur populasi lamun, 2) mengkaji estimasi simpanan karbon, 3) mengkaji parameter kualitas air di Taman Nasional Baluran. Metode yang digunakan yaitu purposive sampling method dan penentuan lokasi menggunakan metode line transect quadrant yang mengacu pada metode LIPI. Pengukuran kualitas air dilakukan secara langsung di lapangan sesuai Standar Nasional Indonesia (SNI) dan pengukuran karbon pada sampel lamun menggunakan metode LOI. Berdasarkan hasil penelitian, diketahui bahwa Spesies lamun yang ditemukan di perairain Taman Nasional Baluran adalah Enhalus acoroides, Thalassia hemprichii, Cymodocea rotundata, Cymodocea serrulata, Syringodium isoetifolium, Halophila minor, Halophila ovalis dan Halodule uninervis. Jenis lamun Enhalus acoroides mempunyai nilai biomassa dan estimasi simpanan karbon paling tinggi yaitu 37,817 gC/m2. Estimasi total stok karbon tertinggi didapatkan pada bagian bawah substrat (rhizoma dan akar) sebesar 40,063 ton.

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Keanekaragaman Lamun Dan Makrozoobentos Sebagai Indikator Kondisi Perairan Pantai Sindhu, Sanur, Bali

Cited by 3 publications

References 1 publication

Seagrass Meadow Conditions in Coastal Waters of Siwak Bay Central Lombok

Seagrass Meadow Conditions in Coastal Waters of Siwak Bay Central Lombok

Diversity of Seagrass Species in The Conservation Area of The Sawu Sea Marine National Park (TNP)

Pengukuran Stok Karbon Ekosistem Lamun Di Kawasan Taman Nasional Baluran, Jawa Timur

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