Keanekaragaman Mikroalga Divisi Cyanobacteria di Danau Aur  Kabupaten Musi Rawas

Harmoko,; Krisnawati, Yuni

doi:10.15575/biodjati.v3i1.1638

Cited by 4 publications

(3 citation statements)

References 1 publication

(1 reference statement)

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“…Data collection used the Visual Encounter Survey (VES) method or visual encounter survey 18 . Observations do at 07.00-12.00 and 18.00-20.00 19,20 . The records included: the time of the encounter, the type of bird, and the number of individuals.…”

Section: Methodsmentioning

confidence: 99%

Bird Diversity in Ake Jawi Village, Aketajawe Lolobata National Park, Halmahera, North Maluku

Ramadani,

Assalam,

Satrio

et al. 2023

Sym. Bio. Ed.

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Aketajawe Lolobata National Park is located in the Wallacea area with 167,319.32 hectares. The park is home to 108 buffer villages, one of which is a bird-friendly village in Ake Jawi Village. This study aims to determine the types of birds, analyze diversity, dominance, and feeding habits. For data collection the visual encounter survey (VES) method was applied for bird sightings along available paths. The study identified 31 bird species grouped into 23 families and 31genus, 15 of them are Indonesian endemics, and 12 species are endemics to North Maluku. Based on the ShannonWiener diversity index, Ake Jawi Village belongs to the medium category, with an index value of 2.889, and a low dominance category with 0.098. The percentage of encounters with insect-eating birds (insectivore) such as the Glossy Swiftlet, Cotton-halmahera, and Goliath Lathe reached 39%, followed by frugivores such as the Papuan Hornbill, White Cockatoo, and Gray-headed Walik by 36%.

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Section: Methodsmentioning

confidence: 99%

Bird Diversity in Ake Jawi Village, Aketajawe Lolobata National Park, Halmahera, North Maluku

Ramadani,

Assalam,

Satrio

et al. 2023

Sym. Bio. Ed.

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“…The role of diatoms as producers in the food chain is that they produce organic matter and oxygen. Cyclotella can be used as a bioindicator in the aquatic environment (Harmoko and Krisnawati, 2018). The phylum Chlorophyta is often found in pond water environments.…”

Section: Diversity Of Phytoplankton Typesmentioning

confidence: 99%

Phytoplankton Composition in White Shrimp (Litopenaeus vannamei) Pond Culture Infected White Feces Disease (WFD)

Anjaini,

Simangunsong,

Fadjar

2023

RJLS

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The aim of this study is to find out the composition and condition of phytoplankton in the white shrimp (L. vannamei) culture inffected by the white feces disease so that one of the indicators of the onset of the white feces disease can be known. This research uses descriptive methods. The observed parameters are the identification of species diversity, abundance, diversity index and dominance index of phytoplankton. The sampling was conducted at three locations, Tuban area, Situbondo area, Lamongan area. The results of the study showed observations in Lamongan area, the total abundance of phytoplankton was 473 cells/L. Situpondo areas abundantity of phytoplankton total was 633 cels/L and Tuban areas abundance was 887 cells/L. In Lamongan area, the diversity index was 1,009. In Situbondo areas diversity Index was 1,013. In Tuban area, diversity indexes were 1,082. In Lamongan area, a dominance index was 0.477. In Situpond area, it was obtained a domination index of 0.544. The genus that dominates the three ponds are Cyclotella and Navicula. At all three locations have high variety of species and abundance of the genus members of the filum Cyanophyta and Bacillariofhyta are detrimental, the genuses that are found are indicators of contaminated waters. The dominance of Cyanophyta (blue-green algae) is also an indicator of the White Feces Disease.

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“…Parameter lingkungan yang memengaruhi kehidupan dan perkembangan mikroalga adalah suhu dan keasaman (Yuliana et al, 2012). Suhu merupakan salah satu faktor lingkungan yang penting bagi makhluk hidup (Harmoko & Krisnawati, 2018). Suhu tertinggi berada di stasiun 4, yaitu 25,5 C, sedangkan suhu terendah berada di stasiun 2 dengan nilai 24,77 C, dengan suhu rata-rata di Sungai Kelingi sebesar 25,10 C.…”

Section: Hasil Pengukuran Faktor Abiotik DI Sungai Kelingi Kota Lubukunclassified

Keanekaragaman Sianobakteri Di Sungai Kelingi Kota Lubuklinggau, Sumatera Selatan

Harmoko

Sepriyaningsih

2019

Al-Kauniyah J. Biol.

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AbstrakSungai Kelingi di Kota Lubuklinggau memiliki kondisi perairan yang tercemar. Sampai saat ini belum ditemukan kajian berkaitan dengan sianobakteri di Sungai Kelingi Kota Lubuklinggau. Tujuan dari penelitian ini adalah menganalisis keanekaragaman sianobakteri dan faktor abiotiknya. Berdasarkan hasil penelitian, sianobakteri yang ditemukan terdiri atas 1 kelas, 2 ordo, 3 famili, 5 genus, dan 5 spesies. Nilai rata-rata keanekaragaman sianobakteri adalah 1,41, dengan keanekaragaman tertinggi berada di stasiun 3 dengan nilai 1,27 dan terendah berada di stasiun 2 dengan nilai 0,66. Nilai rata-rata dominansi sianobakteri adalah 0,43, dengan dominansi tertinggi berada di stasiun 2 dengan nilai 0,53 dan terendah berada di stasiun 3 dengan nilai 0,30. Sementara itu, nilai rata-rata keseragaman sianobakteri adalah 0,52, dengan keseragaman tertinggi berada di stasiun 3 dengan nilai 0,71 dan terendah berada di stasiun 2 dengan nilai 0,36. Hasil pengukuran faktor abiotik di Sungai Kelingi adalah: suhu 25 °C, oksigen terlarut 43,63 mg/L, keasaman 7,29 dan kecerahan 72,47 cm. Dapat disimpulkan bahwa keanekaragaman sianobakteri di Sungai Kelingi Kota Lubuklinggau tergolong ke dalam kriteria sedang. Sianobakteri yang ditemukan Homoeothrix sp., Lyngbya sp., Nostoc sp., Oscilatoria limosa, dan Spirulina sp. Adanya penelitian ini dapat memberikan gambaran tentang sianobakteri di Sungai Kelingi, Kota Lubuklinggau.Abstract Kelingi River in Lubuklinggau City has polluted waters. Up to present, there is no studies have found regarding cyanobacteria in Kelingi River. The purpose of this research was to analyze the diversity of cyanobacteria and their abiotic factors. The results showed that the cyanobacteria found were consisting of 1 class, 2 orders, 3 families, 5 genera, and 5 species. The average value of cyanobacterial diversity was 1.41, with highest diversity being at station 3 by 1.27 and the lowest being at station 2 by 0.66. The average dominance of cyanobacteria was 0.43, with the highest dominance being at station 2 by 0.53 and the lowest being at station 3 by 0.30. The average value of uniformity was 0.52, with the highest uniformity being at station 3 by 0.71 and the lowest being at station 2 by 0.36. The results on the measurement of abiotic factors in the Kelingi River were: temperature 25°C, dissolved oxygen 43.63 mg/L, acidity 7.29 and brightness 72.47 cm. It was concluded that the diversity of cyanobacteria in Kelingi River belongs to the criteria of being moderate. The cyanobacteria found were Homoeothrix sp., Lyngbya sp., Nostoc sp., Oscilatoria limosa, and Spirulina sp. This study provides an illustration of cyanobacterial diversity in the Kelingi River.

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Keanekaragaman Mikroalga Divisi Cyanobacteria di Danau Aur Kabupaten Musi Rawas

Cited by 4 publications

References 1 publication

Bird Diversity in Ake Jawi Village, Aketajawe Lolobata National Park, Halmahera, North Maluku

Bird Diversity in Ake Jawi Village, Aketajawe Lolobata National Park, Halmahera, North Maluku

Phytoplankton Composition in White Shrimp (Litopenaeus vannamei) Pond Culture Infected White Feces Disease (WFD)

Keanekaragaman Sianobakteri Di Sungai Kelingi Kota Lubuklinggau, Sumatera Selatan

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