Keanekaragaman Echinodermata di Perairan Pulau Ngele Ngele Kecil, Kabupaten Pulau Morotai

Nurafni, Nurafni; Muhammad, Sandra Hi; Sibua, Ikbal

doi:10.33387/jikk.v2i2.1427

Cited by 4 publications

(4 citation statements)

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“…If the dominance of large species results in a despondent community state (Gani et al, 2017). The greater the proportion of dominant species in an area, the closer the value is to 1 (Nurafni et al, 2019). The invertebrate dominance index ranged from 0.39 to 0.95 based on the results of the observations, indicating that its condition is quite diverse.…”

Section: The Dominance Index Of Invertebratementioning

confidence: 97%

Assessment of Community Structure of Macroinvertebrates, Coral Cover and Water Quality in Sempu Strait, Malang Regency, East Java

Isdianto,

Kurniawan,

Wicaksono

et al. 2023

J. Ecol. Eng.

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Due to the sensitivity of invertebrates to environmental changes, their presence can serve as an indicator of coral reef health and water quality. This study seeks to ascertain the abundance of invertebrates, the structure of the invertebrate community, and their relationship with coral cover and water quality parameters in the waters of Sempu Strait. The belt transect method and the underwater photo transect (UPT) are used to determine the abundance of invertebrates and coral cover, respectively. Temperature, pH, DO, salinity, and water clarity are measured for water quality. According to the study's findings, seven of the nine invertebrate species were found. Between October 2021 and May 2022, seven of nine invertebrate biota categories, 733 species, and 606 species dominated by Diadema sea urchins were observed every two months. The invertebrate abundance ranged from 0.024 to 0.512. A low and imbalanced invertebrate diversity ranges from 0.078 to 0.493 (H' < 1). The range of the equality index (E < 0.4) is between 0.04 and 0.22, indicating a low community index. There are three levels of dominance index values: low, medium, and high. Due to their abundance, Diadema sea urchins dominate the Sempu Strait, particularly near the Jetty Station with its port activity. Coverage of coral reefs varies between 6% and 21.3%, indicating low and damaged corals. The correlation between coral cover and invertebrate abundance is moderate in Banyu Tawar and Rumah Apung (0.480 to 0.490), whereas it is weak in Watu Meja,. The abundance of invertebrates has a weak link with values ranging from -0.037 to -0.283 for water clarity, temperature, salinity, DO, and pH, but it has a strong correlation with a value of 0.610 for current velocity. The environment, including human activities and water quality, has a significant impact on macroinvertebrate communities. Environmentally tolerant macroinvertebrates will outcompete the vulnerable ones.

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Section: The Dominance Index Of Invertebratementioning

confidence: 97%

Assessment of Community Structure of Macroinvertebrates, Coral Cover and Water Quality in Sempu Strait, Malang Regency, East Java

Isdianto,

Kurniawan,

Wicaksono

et al. 2023

J. Ecol. Eng.

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“…(Toha et al, 2012). Selain itu, penurunan Echinodermata juga terjadi karena masyarakat sekitar pantai Drini banyak mengambil Echinodermata tanpa memperhatikan umur dan besarnya ukuran kususnya jenis Holothuroidea yang memiliki daya jual yang tinggi, sebagai obat-obatan dan bahan makanan (Nurafni et al, 2019). Gambar 3.…”

Section: Metodeunclassified

Diversity of Echinoderms in Drini Beach Gunung Kidul, Yogyakarta

2023

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Research on the diversity of echinoderms at Drini Beach, Gunung Kidul, Yogyakarta has been conducted from December 2020 to July 2021. This study aimed to determine the Echinoderm diversity index. The method sampling technique used belt transect with determination by purposive sampling with three stations in the intertidal zone based on substrate variations. Station 1 had coral substrate type, station 2 had seagrass substrate type, and sand substrate type for station 3. The sample in this study was the species of Echinoderms found in the station area. After sampling, it obtained 7 species of Echinoderms consisting of 3 classes, classified into 4 orders, and 6 families. The diversity index at all stations is low, followed by a low evenness value and a high dominance value. The species Ophiocoma erinaceus was dominant at stations one and two, while the species Tripneustes gratilla was dominant at stations three. Moreover, the most common habitat for echinoderms is This is due to the availability of abundant food, laying places for echinoderms, and shelter to avoid predators. In addition, it is also supported by temperature, pH, salinity, strong currents, and a good depth for Echinoderm habitat

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“…kepadatan spesies, kepadatan spesies ke-I dapat dihitung sebagai K-i, dan kepadatan relatif setiap spesies ke-i terhadap kepadatan total dapat dihitung sebagai KR-i. Menurut Nurafni et al (2019)…”

Section: Indikator Ekologi 1 Kepadatan Jenisunclassified

Keanekaragaman Kelas Crustacea Sub-Kelas Malacostraca pada Ekosistem Mangrove Pantai Padadita Kabupaten Sumba Timur

Talo

Ina

2023

Bioscientist j. ilm. bosbiol.

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The purpose of this study was to determine the diversity of the Crustacea Class Diversity Subclass (Malacostraca) in the mangrove ecosystem of Padadita Beach, East Sumba Regency. The research method used was the quadratic transect and analyzed using a quantitative descriptive approach with the diversity index formula Shannon-Wiener. This study used a sampling technique, namely purposive sampling with a plot size of 2 x 2 meters placed perpendicular to the depth of 200 meters using a plot of 27 plots. The environmental factors measured were temperature, salinity, degree of acidity (pH) and levelsoxygen (DO). Measurements were made at each observation station. The results showed that 5 species of Crustaceans (Malacostraca) that is Gelasimus vocans, Eriphia verrucosa, Ashtoret lunaris, Thalamita stimpsoni and Metopograpsus latifrons. The diversity index obtained is in the moderate category with a value of H’ =1,369.

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Keanekaragaman Echinodermata di Perairan Pulau Ngele Ngele Kecil, Kabupaten Pulau Morotai

Cited by 4 publications

References 0 publications

Assessment of Community Structure of Macroinvertebrates, Coral Cover and Water Quality in Sempu Strait, Malang Regency, East Java

Assessment of Community Structure of Macroinvertebrates, Coral Cover and Water Quality in Sempu Strait, Malang Regency, East Java

Diversity of Echinoderms in Drini Beach Gunung Kidul, Yogyakarta

Keanekaragaman Kelas Crustacea Sub-Kelas Malacostraca pada Ekosistem Mangrove Pantai Padadita Kabupaten Sumba Timur

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