Keanekaragaman Larva Ikan di Sekitar Muara Sungai Musi, Sumatra Selatan

Abstrak Estuari adalah salah satu habitat penting bagi ikan, namun terancam akibat peningkatan aktivitas manusia. Hal tersebut dapat memengaruhi keanekaragaman ikan di sekitarnya. Tujuan penelitian ini untuk menganalisis keanekaragaman dan kelimpahan larva ikan di sekitar muara Sungai Musi Sumatra Selatan. Penelitian ini menggunakan metode survei dengan cruise track design dan lintasan survei continuous parallel pada setiap stasiun secara swept area. Hasil penelitian menunjukkan bahwa indeks keanekaragaman (H’) di muara Sungai Musi pada Maret 2019 sebesar 0,639 sedangkan pada Mei 2019 sebesar 1,253. Kelimpahan relatif pada Maret 2019 lebih tinggi daripada Mei 2019. Kelimpahan Relatif (Kr) pada Maret 2019 antara 0,69–84,61% dan pada Mei 2019 antara 0,21–58,77%. Kelimpahan larva ikan yang ditemukan pada Mei lebih tinggi, yaitu sebanyak 456 individu dari 10 famili. Pada Maret ditemukan lebih rendah, yaitu sebanyak 143 individu dari 6 famili. Ditemukan larva ikan dari famili Engraulidae, Belonidae, Osphronemidae, Nemipteridae, Gerreidae, dan Gobiidae pada Maret. Sedangkan pada Mei 2019, yaitu Nemipteridae, Engraulidae, Scatophagidae, Chandidae, Lobotidae, Terapoinidae, Belonidae, Osphronemidae, Chanidae, Clupeidae. Abstract Estuary is one of important habitat for fish, yet is threatened by an increase in human activities. Thus affecting the diversity of fish around it. This study aim to determine the diversity and abundance of fish larvae around the mouth of Musi River in South Sumatra. This study was conducted using survey method with Cruise Track Design and continuous parallel survey track by swept area at each station. The results showed that the diversity index (H ') at the mouth of the Musi River in March 2019 was 0.639 while in May 2019 was 1.253. Relative Abundance (Kr) in March 2019 between 0.69–84.61% and in May 2019 between 0.21–58.77%. Abundance of fish larvae in May was found higher at 456 individuals from 10 families. Whereas in March it was found to be lower as many as 143 individuals from 6 families. The relative abundance in March 2019 was lower than in May. Fish larvae from the Engraulidae, Belonidae, Osphronemidae, Nemipteridae, Gerreidae and Gobiidae families were found in March. Whereas in May 2019 were Nemipteridae, Engraulidae, Scatophagidae, Chandidae, Lobotidae, Terapoinidae, Belonidae, Osphronemidae, Chanidae, Clupeidae.

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KEANEKARAGAMAN JENIS IKAN DI SUNGAI DIGOEL DISTRIK EDERA KABUPATEN MAPPI

Musamus Fisheries and Marine Journal ◽

10.35724/mfmj.v1i1.1503 ◽

2018 ◽

pp. 1-14

Author(s):

Robert S. Buhdy ◽

Norce Mote ◽

Edy HP. Melmambessy

Keyword(s):

Species Diversity ◽

Relative Abundance ◽

Fish Species ◽

Diversity Index ◽

Survey Method ◽

Fishing Gear ◽

Species Diversity Index ◽

Dominance Index ◽

Abundance Index ◽

Evenness Index

Fisheries production in the mainland waters of Mappi Regency is larger (27.48%) compared to marine fisheries (8.53%). Edera District is one of the districts in Mappi District which contributes to the potential of fisheries specifically for mainland waters. This study aims to determine the diversity of fish species in the Digoel River, Edera District, Mappi Regency. The fishing gear used is gill nets, stocking nets, fixed lines, fishing rods and spoon nets (tanggo). The study was conducted in August - October 2017 using the survey method. The variables analyzed were the species diversity index, evenness index, dominance index and relative abundance index. The results of the study obtained 28 species of fish which were divided into 8 orders of 20 families and 28 species. The value of the diversity of fish species is moderate, the Evenness value is relatively stable and evenly distributed, the type of dominance in Di shows that there is no dominance of species and the relative abundance of Kr is medium. Keywords: Digoel River; Diversity; Evenness; Dominance and Relative Abundance.

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STRUKTUR KOMUNITAS LARVA IKAN PADA SAAT PASANG SURUT DI MUARA SUNGAI MOROSARI SAYUNG, DEMAK

Management of Aquatic Resources Journal (MAQUARES) ◽

10.14710/marj.v7i4.22571 ◽

2018 ◽

Vol 7 (4) ◽

pp. 370-378

Author(s):

Prayogi Pahingguan ◽

Bambang Sulardiono ◽

Wiwiet Teguh Taufani

Keyword(s):

Sea Water ◽

Fish Larvae ◽

Diversity Index ◽

Research Result ◽

High Tide ◽

River Estuary ◽

Survey Method ◽

Research Station ◽

Tide Level ◽

Index Value

Muara Sungai merupakan perairan semi tertutup yang terletak di bagian hilir sungai dan masih berhubungan dengan laut sehingga memungkinkan untuk terjadinya pencampuran dua massa air, yakni air tawar dan air laut. Tujuan penelitian untuk mengetahui komposisi dan kelimpahan larva ikan, mengetahui perbedaan struktur komunitas pada saat pasang dan surut. Metode yang di gunakan adalah metode survei yang dilaksanakan pada bulan Mei 2018 di Muara sungai Morosari Sayung, Demak. Sampling dilakukan pada 3 stasiun dengan kondisi pasang dan surut. Variabel yang diukur antara lain Komposisi, Kelimpahan Larva ikan dan Struktur komunitas pada saat pasang dan surut. Hasil penelitian didapatkan Larva ikan pada saat pasang di stasiun I sebanyak 43 ind, stasiun II diperoleh larva ikan sebanyak 22 ind dan stasiun III sebanyak 34 ind. Hasil penelitian didapatkan pada saat surut di stasiun I sebanyak 24 ind, stasiun II 22 ind dan stasiun III sebanyak 34 ind. Keseluruhan larva ikan yang tertangkap terdiri dari 10 famili yaitu Nemipteridae, Mugilidae, Gobiidae, Ambassidae, Acrididae, Chanidae, Engraulidae, Labridae, Scatophagidae dan Lactaridae. Indeks keanekaragaman pada saat pasang termasuk dalam kategori rendah dan sedang dengan nilai berkisar 0,99-1,6. Indeks keseragaman berkisar antara 0,78-0,91 maka tergolong kedalam kategori tinggi atau stabil. Nilai indeks Dominasi termasuk kedalam dominasi rendah dan sedang dengan nilai berkisar antara 0,22-0,40. Nilai indeks keanekaeragaman pada saat surut masuk dalam kategori rendah dan sedang dengan nilai berkisar 0,91-1,41. Indeks keseragaman berkisar 0,66-0,91 masuk dalam kategori stabil. Dominasi berkisar antara 0,32-0,45, dengan nilai tersebut maka dapat dikategorikan Dominasi sedang. Estuary is a semi-closed waters located in the downstream part of the river and still in contact with the sea, allowing for mixing of two water masses, namely fresh water and sea water. The purpose of this research is to find out the composition and abundance of fish larvae, to know the differences in community structure during high and low tide levels. The method used in this research is a survey method conducted in May 2018 in the river estuary of Morosari Sayung, Demak. Sampling was carried out at 3 tidal and low tide stations. Variables measured include Composition and Abundance of fish larvae and community structures during highs and low tide level. The research result showed that 43 ind larvae at high tide at station I, were 22 ind at stations II, were obtained and 34 ind stations III. The results of the research were obtained at low tide at station I as many as 24 ind, station II 22 ind and station III as many as 34 ind. All captured fish larvae consist of 10 families namely Nemipteridae, Mugilidae, Gobiidae, Ambassidae, Acrididae, Chanidae, Engraulidae, Labridae, Scatophagidae and Lactaridae. The diversity index value at the high tide entered in the low and medium category ranged from 0.99 to 1.6. Uniformity lindex ranges from 0.78 to 0.91 in the medium category. Domination ranges from 0.22 to 0.40, with this value the entire research station into the category there is no dominance. The diversity index value at the low tide entered in the low and medium category ranged from 0.91 to 1.41. The uniformity index ranges from 0.66 to 0.91 included in the stable category. Domination ranges from 0.32-0.45 with this value can be categorized medium.

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THE DIVERSITY OF BUTTERFLY IN AIR DINGIN LANDFILLS, BALAI GADANG, PADANG CITY

BERITA BIOLOGI ◽

10.14203/beritabiologi.v19i2.3788 ◽

2020 ◽

Vol 19 (2) ◽

Author(s):

Leila Muhelni ◽

Hendra Anwar

Keyword(s):

Relative Abundance ◽

Environmental Conditions ◽

Diversity Index ◽

Good Condition ◽

Wiener Index ◽

Survey Method ◽

Surrounding Environment ◽

Evenness Index ◽

Sunny Weather ◽

Index Value

The study of butterfly in the in Air Dingin Landfills needs to be carried out to find out what types of butterflies are in this area and how their diversity is, given the increasing area of Landfills that will change the surrounding environment into a place of rubbish heap. The study was conducted by implementing survey method with insect net. The collection of butterflies was carried out in 2 periods (2x6 = 12 days) in April-June 2019 during sunny weather from 09:00 – 12:00 of Western Indonesian Time. All butterflies were collected at ±5 m distance from the collector. The data was analysed to calculate abundance, relative abundance, frequency of the presence of butterfly, and determine diversity was conducted by using the Shannon-Wiener Index and Evenness index. The results obtained 5 families, 14 genera, 22 species, and 220 individuals consisting of 122 males and 98 females. The diversity index value obtained was 2.27 and categorised as the medium category it is mostly because, as assumed, the environmental conditions of the Air Dingin Landfills were still in good condition.

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Analysis of Phytoplankton on The Common Carp (Cyprinus carpio) Pond and Tilapia (Oreochromis niloticus) Pond at IBAT Punten, Batu, East Java

el–Hayah ◽

10.18860/elha.v7i1.7242 ◽

2019 ◽

Vol 7 (1) ◽

pp. 12-20

Author(s):

Diana Arfiati ◽

Purwanti Purwanti ◽

Setya W. A. Permanasari ◽

Asthervina Widyastami Puspitasari

Keyword(s):

Water Quality ◽

Common Carp ◽

Relative Abundance ◽

Diversity Index ◽

Similarity Index ◽

Survey Method ◽

Natural Food ◽

Phytoplankton Abundance ◽

Evenness Index ◽

The Common

Phytoplankton plays an important role in the aquatic ecosystem for supporting the survival of organisms, such as zooplankton and fish. The aim of this research was to observe the phytoplankton in the common carp ponds and tilapia ponds with water quality parameters at IBAT Punten, Batu, East Java. The survey method was used in this research. The water quality assay was temperature, brightness, pH, DO, CO2, Nitrate, and Orthophosphate, and the phytoplankton analysis was phytoplankton abundance, diversity index, dominance index, relative abundance, similarity index, and evenness index. The water quality on the carp ponds and tilapia ponds was quite good for common carp and tilapia growth. The average of phytoplankton abundance in common carp ponds were 1538 cell/ml which classified oligotrophic and tilapia ponds were 4900 cell/ml which included mesotrophic respectively, diversity index was moderate in both ponds, no dominance specific phytoplankton in both ponds the relative abundance in both ponds showed different phytoplankton availability, the similarity, and evenness index showed the same in both ponds and evenly on tilapia ponds and equally on common carp pond respectively. The carbon dioxide (CO2), nitrate, and orthophosphate have a strong correlation to phytoplankton abundance with value 0.882; 0.949; and 0.967 respectively. In the future, pond management will be needed in IBAT Punten with growing natural food.

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The Relationship of Megazoobenthos Association with Seagrass Ecosystem Conditions in Ujung Genteng Waters, Sukabumi

Asian Journal of Fisheries and Aquatic Research ◽

10.9734/ajfar/2019/v5i430081 ◽

2020 ◽

pp. 1-10

Author(s):

Gilang Primanagita Rachman ◽

Indah Riyantini ◽

Zahidah Hasan ◽

Herman Hamdani

Keyword(s):

Diversity Index ◽

Close Association ◽

Strong Relationship ◽

Survey Method ◽

Association Pattern ◽

Seagrass Ecosystem ◽

Relationship Of ◽

The Relationship ◽

Seagrass Density ◽

Diadema Setosum

Seagrass beds in Ujung Genteng waters are one of the shallow marine ecosystems that have relatively high biodiversity. Seagrass ecosystem as one of the coastal ecosystems in these waters has a diversity of marine life that is associated with it. The purpose of this study was to establish the association pattern and the correlation of mega zoobenthos to seagrass ecosystem conditions. The method used was a survey method by conducting a survey direct observation of the stations that have been determined. Three seagrass species were identified, namely: Thallasia hemprichii, Cymodoceae rotundata and Enhalus acoroides. The highest density of seagrass was found in station 2 with the type of seagrass Thallasia hemprichii as much as 207 ind/m2. Fifteen mega zoobenthos species were identified representing 3 phyla. Species Mega zoobenthos which is most commonly found in Ujung Genteng waters is Ophiothrix fragilis, Ophiocoma erinaceus, and Diadema setosum. The mega zoobenthos Diversity Index at the observation station is included in the medium category that is 2.33-2.66 and the evenness index is 0.63-0.84. Correlation of seagrass density with mega zoobenthos obtained by 0.92 shows that there is a very strong relationship between seagrass density with mega zoobenthos. The result shows that there are 4 patterns of close association and 2 patterns of very close association. Ophiocoma erinaceus of the ophiuroidea class has a pattern of very close positive associations with seagrass Cymodoceae rotundata and Dendrodoris sp of the order nudibranchia has a pattern of very close negative associations with seagrass Cymodoceae rotundata.

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Makroalgae di Paparan Terumbu Karang Kepulauan Anambas

Jurnal Natur Indonesia ◽

10.31258/jnat.12.1.49-53 ◽

2012 ◽

Vol 12 (1) ◽

pp. 49

Author(s):

Achmad Kadi

Keyword(s):

Dominant Species ◽

Diversity Index ◽

Survey Method ◽

Sargassum Polycystum ◽

Marine Flora

Macroalgae research in Anambas Islands that is the reef flats Jemaja, Pemutus and Matak Waters was carried onJune 2005. Survey method on the research using quadrat transect. Macroalgae is a marine flora which containsChlorophyceae, Phaeophyceae and Rhodophyceae. Biodiversity in the research location was 18 species. Thehigher diversity index (H) was 0.24 and equitability index (e) was 0,105. The higher density of species were 207individuals. Dominant species was 22,83% by Sargassum polycystum.

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KEANEKARAGAMAN DAN KELIMPAHAN MAKROZOOBENTHOS PADA EKOSISTEM MANGROVE DESA DARUBA PANTAI KABUPATEN PULAU MOROTAI

JURNAL ENGGANO ◽

10.31186/jenggano.5.1.64-77 ◽

2020 ◽

Vol 5 (1) ◽

pp. 64-77

Author(s):

Djainudin Alwi ◽

Sandra Hi. Muhammad ◽

Henderson Herat

Keyword(s):

Relative Abundance ◽

Diversity Index ◽

Mangrove Ecosystem ◽

Natural Food ◽

Ecological Diversity ◽

Ecological Index ◽

Quadrat Sampling ◽

Index Analysis ◽

Mangrove Ecosystems ◽

Secondary Consumers

Ekosistem mangrove berperan sebagai habitat berbagai jenis satwa, salah satunya yaitu makrozoobenthos. Makrozoobenthos berperan sebagai konsumen primer dan ada pula yang berperan sebagai konsumen sekunder atau konsumen yang menempati tempat yang lebih tinggi. Pada umumnya, Makrozoobenthos merupakan makanan alami bagi berbagai satwa perairan yang berukuran besar. Penelitian ini bertujuan menganalisis kelimpahan makrozoobenthos dan menganalisis struktur komunitas makrozoobenthos di kawasan ekosistem mangrove Daruba Pantai. Penelitian ini dilaksanakan pada bulan November sampai Desember 2019 yang berlokasi di kawasan Mangrove Desa Daruba Pantai. Pengambilan data menggunakan metode sampel kuadrat (Quadrat Sampling) dengan ukuran plot 1x1 m2. Metode analisis data menggunakan analisis indeks ekologi seperti kelimpahan individu, kelimpahan relatif, keanekaragaman jenis, keseragaman dan dominasi. Hasil penelitian menunjukan kelimpahan individu makrozoobenthos tertinggi berada pada stasiun ke I yaitu 33,333 (Ind/m2) dan terendah berada di stasiun I dan II yaitu Polymesoda bengalensis 1,111 (Ind/m2). Sedangkan Kelimpahan Relatif tertinggi ada di stasiun II yaitu Episesarma (0,200 %) dan terendah ada di stasiun I dan II yaitu Polymesoda bengalensis (0,007 %). Hasil analisis indeks ekologi Keanekragaman (H’) stasiun I yaitu (2,146), stasiun II (2,158) dan stasiun III (2,131) termasuk dalam kategori sedang. Indeks Keseragaman (E) pada stasiun I berkisar (0,895), stasiun II (0,900), sedangkan pada stasiun III (0,925) termasuk dalam kategori tinggi. Indeks Dominasi pada stasiun I yaitu (0,132), stasiun II (0,132) dan pada stasiun III yaitu (0,130) termasuk dalam kategori rendah.THE DIVERSITY AND ABUNDANCE OF MACROZOOBENTHOS IN MANGROVE ECOSYSTEMS AT DARUBA VILLAGE COASTAL PULAU MOROTAI REGENCY. Mangrove ecosystems play a role as a habitat for various species of animals, one of which is macrozoobenthos. Macrozoobenthos acts as the primary consumer and some have a role as secondary consumers or consumers who occupy a higher place. In general, Macrozoobenthos is a natural food for a variety of large aquatic animals. This research aims to analyze the abundance of macrozoobenthos and analyze the structure of the macrozoos community in the area of the Daruba Coastal mangrove ecosystem. This research was conducted from November to December 2019 located in the Mangrove area of Daruba Pantai Village. Retrieval of data using the method of quadratic sampling (Quadrat Sampling) with a plot size of 1x1 m2. Data analysis methods use ecological index analysis such as individual abundance, relative abundance, species diversity, uniformity, and dominance. The results showed the highest abundance of macrozoobenthos individuals were at a station I which was 33,333 (Ind / m2) and the lowest was at stations I and II namely Polymesoda bengalensis 1.111 (Ind / m2). While the highest relative abundance in at station II, Episesarma (0.200%) and the lowest are at a station I and II, Polymesoda bengalensis (0.007%). The results of the analysis of the Ecological diversity index (H ') of Station I, namely (2,146), Station II (2,158) and Station III (2,131) are included in the medium category. The Uniformity Index (E) at a station I ranges (0.895), station II (0.900), while at station III (0.925) is included in the high category. The Domination Index at a station I (0.132), station II (0.132) and at station III (0.130) are in a low category.

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KEANEKARAGAMAN JENIS ANGGREK ALAM (Orchidaceae) BERDASARKAN KETINGGIAN TEMPAT DI GUNUNG POTENG CAGAR ALAM RAYA PASI KOTA SINGKAWANG PROVINSI KALIMANTAN BARAT

JURNAL HUTAN LESTARI ◽

10.26418/jhl.v8i3.43429 ◽

2020 ◽

Vol 8 (3) ◽

Author(s):

Novita Putri Sesar ◽

Iskandar A M ◽

Togar Fernando Manurung

Keyword(s):

Species Diversity ◽

Environmental Factors ◽

Nature Reserve ◽

Diversity Index ◽

Economic Value ◽

Survey Method ◽

Species Diversity Index ◽

Orchid Species ◽

West Kalimantan ◽

Medium Range

Natural orchids are one of the flora in Mount Poteng which is included of Raya Pasi Nature Reserve located at Singkawang City, West Kalimantan Province. Orchids have economic value for source of income and be beneficial to ecology that needs to be protected. The altitudes and environmental factors strongly affected the presence of orchid species.The research aims to record the diversity of natural orchids species based on the altitudes place in Mount Poteng. The research was conducted on February 28 until March 28, 2020. This research uses survey method. The research sample was taken using double plots method and to determine sample plots locations is conducted by purposive. The total number of the sample plots is 16 plots and each plot measure 20 by 50 meters. Based on the result of research found 19 species of natural orchids that consist of 348 individuals. The results analysis of the diversity index of orchid species in whole of altitudes at Mount Poteng is 1,338 that is included medium range. The highest species diversity index of 1,300 occurred at altitude of 400-500 m asl and the lowest species diversity index at altitude of 700-725 m asl that is 0,594. Orchid species which found in whole of altitudes is Dendrobium crumenatum. Furthermor, there were found the orchid species on certain heights are Cleisostoma scortechinii, Cordiglottis filiformis, Ludisia discolor, and Phalaenopsis pantherina at altitude of 400-500 m asl and species of Bromheadia finlaysoniana and Pomatocalpa latifolia found at altitude of 700-725 m asl.Keywords: altitudes, mount poteng, orchids, species diversity

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TREE SPECIES DIVERSITY IN A PRISTINE MONTANE FOREST PREVIOUSLY UNTOUCHED BY HUMAN ACTIVITIES IN FOJA MOUNTAINS, PAPUA, INDONESIA

REINWARDTIA ◽

10.14203/reinwardtia.v17i2.3546 ◽

2018 ◽

Vol 17 (2) ◽

Author(s):

Asep Sadili ◽

Kuswata Kartawinata ◽

Herwasono Soedjito ◽

Edy Nasriadi Sambas

Keyword(s):

Species Diversity ◽

Tree Species ◽

Human Activities ◽

Diversity Index ◽

Basal Area ◽

Montane Forest ◽

Tree Species Diversity ◽

Importance Value ◽

Montane Forests ◽

Species Area

ADILI, A., KARTAWINATA, K., SOEDJITO, H. & SAMBAS, E. N. 2018. Tree species diversity in a pristine montane forest previously untouched by human activities in Foja Mountains, Papua, Indonesia. Reinwardtia 17(2): 133‒154. ‒‒ A study on structure and composition of the pristine montane forest previously untouched by human activities was conducted at the Foja Mountains in November 2008. We established a one-hectare plot divided into 100 subplots of 10 m × 10 m each. We enumerated all trees with DBH ≥ 10 cm which diameters were measured, heights were estimated and habitats were noted. We recorded 59 species, 42 genera and 27 families, comprising 693 trees with the total basal area (BA) of 41.35 m2/ha. The forest had lower species richness compared to those of lowland forests in Kalimantan, and Sumatra and montane forests in West Java. The Shannon-Wiener’s diversity index was 3.22. Nothofagus rubra (Importance Value, IV=47.89%) and Parinari corymbosa (IV=40.3%) were the dominant species, constituting the basis for designating the forest as the Nothofagus rubra - Parinari corymbosa association. To date, the dominance of N. rubra is unique to the Foja Mountains, as elsewhere in Papua the montane forests were dominated by N. pullei or other species. The species-area curve indicated a minimal area of 5000 m2. On the family level Fagaceae (IV=53.23%), Chrysobalanaceae (IV=40.53%) and Myristicaceae (IV=26.43%) were dominant. Verti-cally the forest consisted of four strata (A–D). In each stratum Nothofagus rubra, Platea latifolia, Parinari corymbosa and Myristica hollrungii were dominant. The diameter class distribution of Nothofagus rubra, Parinari corymbosa and Platea latifolia led us to assume that these species were regenerating well.

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Analysis of Gastropod Diversity as a Bioindicator of Waters in Situ Ciburuy Padalarang, West Bandung Regency, West Java, Indonesia

Asian Journal of Fisheries and Aquatic Research ◽

10.9734/ajfar/2021/v15i530341 ◽

2021 ◽

pp. 10-19

Author(s):

Erwin Theofilius ◽

Zahidah Hasan ◽

Asep Agus Handaka ◽

Herman Hamndani

Keyword(s):

Water Quality ◽

Species Diversity ◽

Sampling Method ◽

Diversity Index ◽

Research Area ◽

Survey Method ◽

Gastropod Species ◽

Evenness Index

This study conducted to determine the water quality of Situ Ciburuy based on the structure of the gastropod community as a bioindicator. The survey method used in this study based on collecting data directly at the research area (purpose sampling method). For instance, species and density of gastropods were descriptively analyzed, using diversity index and evenes index. For instance, The findings showed that level of water quality in Situ Ciburuy based on gastropods bioindicators was lightly polluted. That is indicated by the low to moderate diversity of gastropods, which ranges from 1.31-1.98. The Shannon evenness index (0,73-0.95) revealed low gastropod species diversity in Situ Ciburuy, indicating low evenness of gastropod in Situ Ciburuy.

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