scholarly journals Macrozoobenthos Community Structure In The Estuary of Donan River, Cilacap, Central Java Province, Indonesia

Omni-Akuatika ◽  
2017 ◽  
Vol 13 (2) ◽  
Author(s):  
Taufik Fakih Hakiki ◽  
Isdradjad Setyobudiandi ◽  
Sulistiono Sulistiono
Keyword(s):  
Community Structure ◽  
Diversity Index ◽  
Sampling Location ◽  
Dominance Index ◽  
Central Java ◽  
Agriculture Industry ◽  
Ecosystem Condition ◽  
Segara Anakan Lagoon ◽  
Central Java Province

Estuary of Donan Riverwhich is adjacent to Segara Anakan Lagoon in Cilacap, Central Java Province (Indonesia) has been used for a number of activities such asfishieries, agriculture, industry, harbor, and tourism activities.  The aim of this study is to analyze the ecosystem condition based on mazcrozoobenthos community structure. This study was conducted from Augustus 2015 to January 2016. Samples were collected monthly at five stations from the river close area to the ocean close area. The study was conducted to identify kinds of generaand densityof themacrozoobenthos, and analyze substrates and water quality.Data analysis was performed onabundance, diversity, evenness and dominance indexes.Based on the study, macrozoobenthos at the estuary of Donan River consists of three classes i.e Gastropod (12 genera), Bivalvia(9 genera), and Polychaeta (6 genera). Based on the sampling location, Gastropod and Bivalvia are the largest composition found at five stations. Based on the sampling location, the macrozoobenthos density, diversity index, evennes index,and dominance index can be inferred that the estuary of Donan River is classified to be moderately ecological polluted.

scholarly journals THE ANALYSIS OF OIL CONTENT IN SEDIMENT AND COMMUNITY STRUCTURE OF MACROZOOBENTHOS IN BELAWAN WATERS OF MEDAN CITY, NORTH SUMATERA PROVINCE

2020 ◽  
Vol 3 (2) ◽  
pp. 167-178
Author(s):  
Doli Juna Setia Tanjung ◽  
Bintal Amin ◽  
Syafruddin Nasution
Keyword(s):  
Community Structure ◽  
Linear Regression ◽  
Oil Content ◽  
Diversity Index ◽  
The Other ◽  
Regression Analyses ◽  
Simple Linear Regression ◽  
Dominance Index ◽  
Ocypode Quadrata ◽  
Evenness Index

This research was conducted in March 2019 to determine the oil content in sediment, it’s community structure of macrozoobenthos and it’s a relationship in Belawan Waters of Medan City, North Sumatera. Four sampling stations with five replications in each station were surveyed. The results showed that the average oil content in sediments exceeded the threshold had set by the National Academy of Science. Macrozoobenthos found consists of Ocypode quadrata, Scyla serrate, Rotun dicauda, Penaeus sp, Murex tribulus, and Nassarius olivaccus. The highest abundance was in Station 3 and the lowest was in Station 2. The diversity index in each station was generally very low. Dominance Index in Station 4 was medium, whilst the other stations were high. Evenness index showed in Station 3 and 4 were in high population, Station 1 was in medium population and Station 2 was in low population. Simple linear regression analyses between oil content in sediment with community structure of macrozoobenthos indicated negative correlation ( Y = 10,5-0,0001x , R2 = 0,0004 and r = 0,02 ) which indicated that the higher the oil content, the lower the macrozoobenthos abundance in sediment.

scholarly journals Community Structure of Dragonfly (Ordo: Odonata) in Natural Forest and Tourist Sites Petungkriyono Forest, Central Java, Indonesia

2021 ◽  
Vol 6 (3) ◽  
pp. 67328
Author(s):  
Nur Apriatun Nafisah ◽  
R.C.Hidayat Soesilohadi
Keyword(s):  
Community Structure ◽  
Tropical Rainforest ◽  
Diversity Index ◽  
Natural Forest ◽  
Natural Forests ◽  
Community Based ◽  
Central Java ◽  
Wiener Diversity Index ◽  
Index Value ◽  
Total Species

Petungkriyono forest is a tropical rainforest with high biodiversity. The increasing tourism activities in Petungkriyono lead to land conversion. Dragonfly (order Odonata) is a good bioindicator for aquatic and terrestrial. This study aimed to compare the community structure of Odonata in natural forests and tourist sites. The method of collecting imago Odonata was done by direct searching, samples were captured using sweep netting. The results showed that the dragonflies found in all locations consisted of the same family, 2 families (Gomphidae and Libellulidae) from the suborder Anisoptera and 6 families (Calopterygidae, Chlorocyphidae, Coenagrionidae, Euphaidae Platycnemididae, and Platystictidae) from the suborder Zygoptera. The total species of dragonflies found in Sokokembang were 15 species with a total of 293 individuals, Tirta Muncar 13 species of 287 individuals, Karanggondang 17 species of 276 individuals, and Curug Lawe 14 species of 242 individuals. The highest relative abundance of individuals was in the natural forest of Sokokembang is Drepanosticta spatulifera (26.28%) and in Karanggondang Vestalis luctuosa (24.64%), while in the tourist forests of Tirta Muncar and Curug Lawe were Euphaea variegata (34.84% and 28.51 %). The structure of the Odonata community is based on the Shannon-Wiener diversity index in the natural forests of Sokokembang (2.18) and Karanggondang (2.21) at the tourist sites of Tirta Muncar (1.84) and Curug Lawe (2.11). The results showed that the structure of the Odonata community based on the level of the diversity index value, evenness index, and dominance index in natural forests and tourist sites in Petungkriyono forest was not significantly different. 

scholarly journals Phytoplankton community structure in Menjer Lake, Central Java

2021 ◽  
Vol 869 (1) ◽  
pp. 012037
Author(s):  
F Sulawesty ◽  
G P Yoga ◽  
L Subehi ◽  
R Rosidah
Keyword(s):  
Community Structure ◽  
Phytoplankton Community ◽  
Diversity Index ◽  
Nutrient Content ◽  
Cell Counting ◽  
Phytoplankton Community Structure ◽  
Nitrogen And Phosphorus ◽  
Central Java ◽  
Phytoplankton Communities ◽  
Ecological Pressure

Abstract The occurrence of land changes around Lake Menjer, Central Java Province will affect the condition of water quality subsequently will affect biota, including phytoplankton. The purposes of study was to analyze the composition and abundance of phytoplankton in Menjer Lake regarding to nutrient content i.e. nitrogen and phosphorus. Observations on the phytoplankton community were conducted in July and October 2019 at six locations in Menjer Lake. Water samples were taken at the water surface as much as 10 L filtered using plankton net. Identification was carried out under the inverted microscope Diaphot 300. The abundance was calculated using the Sedgwick Rafter cell counting (SRCC) method. Analysis of the phytoplankton community structure was derived by calculating the Diversity Index, Evenness Index, and Simpson Dominance Index. The nutrient content in Menjer Lake influences the structure of phytoplankton communities quantitatively and qualitatively. Observation showed that the diversity of phytoplankton was low and there was one species dominanted, the result explained that the phytoplankton community in Menjer Lake is unstable and there is ecological pressure on the community. It can be concluded that the improvement of environmental conditions around Menjer Lake is the basis for the sustainable management of Menjer Lake.

scholarly journals EVALUASI KESEIMBANGAN AIR DI PROVINSI JAWA TENGAH

2018 ◽  
Vol 3 (2) ◽  
Author(s):  
Sutopo Purwo Nugroho
Keyword(s):  
Water Supply ◽  
Tap Water ◽  
Water Rights ◽  
Water Shortage ◽  
The Third ◽  
Central Java ◽  
Agriculture Industry ◽  
Exclusive Right ◽  
Irrigation Agriculture ◽  
Central Java Province

Water supply for the domestics use of Central Java Province has been experiencing problems and challenging. With population of 35 million or 16% of Indonesia, it place the province as the third in national population. It have consequently, water need in the province is as such for use of domestics, irrigation/agriculture, industry, etc. Several counties within the province has experiencing water shortage. Particularly during dry season, defisits is inclining that results water use conflicts. Furthermore, conflicts occur not only in counties with water shortage but also in county with sufficient water supply. Conflict is generally triggered by weak management and allocation. This is a result of unlimited territorial sovereighnity of water resources and uncertainty of water rights. Unlimited territorial sovereighnity of water resource contain exclusive right to utilize tap water within the territorial right, in way that the territory hold the sole right to exploit the resource without compensation to neighbouring territory. Hence, water balance should be investigated better and comprehensively. Kata kunci: keseimbangan air, konflik, sumber daya air, Jawa Tengah.

scholarly journals Struktur Komunitas dan Kelimpahan Fitoplankton dan Zooplankton pada Musim Penghujan di Zona Intertidal Pantai Selatan Yogyakarta

2021 ◽  
Vol 24 (2) ◽  
pp. 167-176
Author(s):  
Ratih Ida Adharini ◽  
Namastra Probosunu
Keyword(s):  
Community Structure ◽  
Environmental Conditions ◽  
Water Samples ◽  
Low Temperatures ◽  
Intertidal Zone ◽  
Rainy Season ◽  
Diversity Index ◽  
South Coast ◽  
Wet Season ◽  
Dominance Index

Plankton is an organism that plays an important role as a water food reserve, which is influenced by environmental conditions. This study aims to determine the community structure, abundance and biodiversity of phytoplankton and zooplankton in the intertidal zone of south coast of Yogyakarta during the rainy season. The research was conducted at Pantai Drini, Kukup, and Sundak of Gunungkidul District during December 2016 - February 2017. Sampling was conducted on three observation stations in the intertidal zone of Drini Beach, Kukup, and Sundak twice a month. The water samples were taken with plankton nets number 25, then were fluidized in 4% formalin and stored at low temperatures. The results showed diversity index of plankton in Kukup Beach in January at 1.86 while the lowest value in February at Sundak Beach was 0.87. The highest plankton abundance in January at Sundak Beach was 900 individu L-1 while the lowest value in December at Kukup Beach was 217.8 individu L-1. Based on the diversity index of Shannon-Wiener, intertidal coast waters of Yogyakarta in wet season is categorized as moderate, and dominance index is categorized  as low. Plankton merupakan organisme yang berperan penting sebagai cadangan makanan perairan dan dipengaruhi oleh kondisi lingkungan. Penelitian ini bertujuan untuk mengetahui struktur komunitas, kelimpahan dan keanekaragaman plankton pada zona inertidal pantai selatan Yogyakarta selama musim penghujan. Penelitian dilakukan di Pantai Drini, Kukup, dan Sundak Kabupaten Gunungkidul selama bulan Desember 2016 – Februari 2017. Pengambilan sampel dilakukan pada tiga stasium pengamatan di zona intertidal Pantai Drini, Kukup, dan Sundak setiap dua minggu. Sampel air diambil dengan jaring plankton nomor 25, kemudian sampel plankton difiksasi dalam formalin 4% dan disimpan pada suhu rendah. Hasil penelitian menunjukan indeks keanekaragaman jenis plankton tetinggi di Pantai Kukup pada bulan Januari sebesar 1,86 sedangkan nilai terendah pada bulan Februari di Pantai Sundak sebesar 0,87. Kelimpahan plankton tertinggi pada bulan Januari pada Pantai Sundak sebesar 900 individu L-1 sedangkan nilai terendah pada bulan Desember di Pantai Kukup yaitu 217,8 individu L-1. Berdasarkan indeks keanekaragaman Shannon-Wienner maka indeks keanekaragaman di pantai selatan Yogyakarta tergolong rendah-sedang dengan indeks dominansi tergolong rendah.

scholarly journals Perifiton Community Structure in Citarik River

2020 ◽  
pp. 1-8
Author(s):  
Heti Herawati ◽  
Nisa Hidayati Fitri ◽  
Zahidah . ◽  
Asep Sahidin ◽  
Izza Mahdiana Apriliani ◽  
...  
Keyword(s):  
Community Structure ◽  
Research Method ◽  
Diversity Index ◽  
Survey Method ◽  
Chemical Parameters ◽  
Dominance Index ◽  
Periphyton Community ◽  
Physical And Chemical Parameters ◽  
Index Value ◽  
Physical And Chemical

The purpose of this research is to determine the condition of waters in the Citarik River with the periphyton community as a bio indicator. This research was conducted from March-April 2019. The research method used was a survey method at 4 station points, five times sampling with a span of 7 days. The smallest periphyton abundance is in station IV which is 22 ind/cm2 and the most is in station I which is 18278 ind/cm2. Comparison of species deficit values at each station is different, this is influenced by different physical and chemical parameters. The dominance index value in the waters of the Citarik River ranges from 0.1 to 0.8 and the diversity index value ranges from 0.2 to 0.9. The results showed the Citarik River was in a mildly polluted condition.

scholarly journals Community Structure Of Mushroom Coral (Fungiidae) In Banggai Island , Central Sulawesi

2016 ◽  
Vol 3 (2) ◽  
pp. 101
Author(s):  
Bambang Hermanto ◽  
Jemmy Souhoka
Keyword(s):  
Community Structure ◽  
Species Composition ◽  
Coral Species ◽  
Diversity Index ◽  
Hard Coral ◽  
Dominance Index ◽  
Free Living ◽  
Substrate Structure ◽  
Mushroom Coral ◽  
Central Sulawesi

Mushroom coral is one of the component of hard coral family in ordo Scleratinia where this life was free living on substrate. Structure community of mushroom coral study in the waters of the Banggai Archipelago in Central Sulawesi province has not been done much. Observation on community structure of mushroom coral at Banggai Archipelago waters was conducted on July 2011. The purpose of this study  to determine the species composition, diversity, evenness, density and dominance species of musrhoom coral.The method used in this research is belt transects that made ​​ parallelly extended to the shoreline with the size of 100 x 3 m2. Mushroom coral species observation done visually by counting the number of species.  It was found 27 species belong to 10 genus of mushroom corals. The highest diversity index (H) was 1,19 at station 9 and the minimum was 0,95 at station 4.  The highest avenness index (j) was 0,69 at station 3 and the minimum was 0,44 at station 8.  The highest dominance index (D) was 0,14 at station 7 and minimum was 0,08 at station 6.  Identification results shows that there are 5 species of mushroom coral found in the 9 station, which is Fungia concinna, F. repanda, F. fungites, F. costulata and Herpolita limax. Keywords : community structure, mushroom coral, banggai archipelago, Central Sulawesi   ABSTRAK Karang jamur merupakan salah satu family karang batu yang masuk dalam ordo Scleractinia dimana hidupnya bebas pada substrat. Penelitian mengenai struktur komunitas karang jamur di perairan kepulauan Banggai propinsi Sulawesi Tengah belum banyak dilakukan. Pengamatan struktur komunitas karang jamur di perairan Kepulauan Banggai telah dilakukan pada bulan Juli 2011. Tujuan penelitian ini yaitu untuk melihat komposisi jenis, keanekaragaman jenis, kemerataan jenis, kepadatan dan dominansi jenis karang jamur.  Metode yang digunakan dalam penelitian ini yaitu transek sabuk yang dibuat memanjang garis pantai dengan luas transek 100 x 3m². Pengamatan jenis karang jamur dilakukan secara visual dengan menghitung jumlah tiap jenis.  Hasil analisis menunjukkan jumlah jenis karang jamur yang ditemukan sebanyak 27 jenis yang mewakili 10 marga.  Indeks keanekaragaman jenis (H) tertinggi dijumpai di stasiun 9 sebesar 1,19 dan terendah di stasiun 4 sebesar 0,95.  Indeks kemerataan jenis (j) tertinggi ditemukan di stasiun 3 sebesar 0,69 dan terendah di stasiun 8 sebesar 0,44.  Indeks dominansi jenis (D) tertinggi dijumpai di stasiun 7 sebesar 0,14 dan terendah di stasiun 6 sebesar 0,08.  Hasil identifikasi jenis menunjukkan ada 5 jenis karang jamur yang ditemukan di 9 stasiun yaitu Fungia concinna, F. repanda, F. fungites, F. costulata dan Herpolita limax. Kata kunci : Struktur komunitas, Karang jamur, Kepulauan Banggai

Study on the community structure of macrozoobenthos in Kobok and Kao estuaries, Kao Bay, North Halmahera

2014 ◽  
pp. 62
Author(s):  
Najib Hi Talib ◽  
Lawrence J.L Lumingas ◽  
Markus T Lasut
Keyword(s):  
Community Structure ◽  
Species Diversity ◽  
Diversity Index ◽  
Factorial Correspondence Analysis ◽  
Species Diversity Index ◽  
Dominance Index ◽  
Sediment Types ◽  
As Species ◽  
Evenness Index ◽  
Community Variables

This study aims to assess the community structure of macrozoobenthos in the estuary of Kobok and Kao rivers, Kao Gulf waters. Sampling was carried out in October 2014 at 10 sampling stations in both estuaries. Variables examined in this study were community variables, such as species composition and abundance, including species diversity index Shannon-Wiener (H '), species richness (SR) index, evenness index (J'), Berger-Parker dominance index (d) and 'assemblage' (group) of the macrozoobenthos using multivariate analysis such as classification and analysis of factorial correspondence analysis (AFK). This study obtained a total of 757 individuals of 61 species. Diversity Index (H ') ranged from 1.62 to 3.96, Evenness index (J ') from 0.63 to 1.26., richness (SR) index ranged from 2.83 to 4.45 and dominance index (d) 0.16 to 0.47. Classification analysis separated 4 interconnecting groups at the station or resident species that were in the similar sediment types. Correspondence Factorial Analysis for the station variables mostly responsible for the axial formation was stations mostly contributing  to the formation of axes as the characteristic station of the axes, because it had relatively high contribution. Penelitian ini bertujuan untuk menilai struktur komunitas makrozoobentos di muara Sungai Kobok dan muara Sungai Kao perairan Teluk Kao. Pengambilan sampel dilaksanakan pada bulan oktober 2014 pada 10 stasiun sampling di kedua muara. Variabel yang dikaji dalam penelitian ini adalah variabel komunitas seperti komposisi dan kelimpahan spesies termasuk indeks keanekaragaman spesies Shannon-Wiener (H’), indeks kekayaan spesies (SR), indeks kemerataan spesies (J’), indeks dominasi Berger-Parker (d) serta ‘assemblage’ (grup) makrozoobentos dengan menggunakan analisis multivariate seperti analisis klasifikasi maupun analisis faktorial koresponden (AFK). Penelitian ini diperoleh total 757 individu yang termasuk dalam 61 spesies. Nilai Indeks Keanekaragaman (H’), berkisar dari 1.62-3,96. Nilai Indeks Kemerataan Spesies (J’), berkisar dari 0,63-1,26. Nilai Indeks kekayaan spesies (SR), berkisar dari 2,83-4,45 dan Nilai indeks dominasi (d), berkisar dari 0,16-0,47. Analisis klasifikasi telah memisahkan 4 grup yang saling berhubungan pada stasiun maupun spesies penghuni yang memiliki kemiripan dalam tipe sedimen. Sedangkan Analisis Faktorial Koresponden untuk variabel stasiun yang paling bertanggungjawab terhadap pembentukan sumbu-sumbu adalah (kontribusi absolut). Stasiun-stasiun yang paling berkontribusi dalam pembentukan sumbu juga sebagai stasiun karakteristik sumbu tersebut, karena memiliki kontribusi relatif yang juga tinggi.

scholarly journals Biodiversity of Fishes in Musi Estuary, South Sumatra, Indonesia

2020 ◽  
Vol 9 (2) ◽  
pp. 192-198
Author(s):  
Fitri Agustriani ◽  
Anna Ida Sunaryo Purwiyanto ◽  
Wike Ayu Eka Putri ◽  
Fauziyah Fauziyah
Keyword(s):  
Community Structure ◽  
Data Collection ◽  
Diversity Index ◽  
Stable Condition ◽  
High Availability ◽  
Fishing Ground ◽  
Dominance Index ◽  
Average Value ◽  
Gill Net ◽  
Evenness Index

Agustriani F, Purwiyanto AIS, Putri WAE, Fauziyah F. 2020. Biodiversity of fishes in musi estuary, South Sumatra, Indonesia.  Jurnal Lahan Suboptimal : Journal of Suboptimal Lands 9(2): 192-198.The high activity in the Musi estuary will have an impact on fishes diversity. This research aimed to analyse the biodiversity of fishes in the Musi estuary in South Sumatra. An experimental fishing method was used for data collection by fishing ground following the local fishermen habit using gillnet millennium. The abundance of fish species found were 21 species and 16 families. The main catch was Hemibagrus nemurus with a high relative abundance (RA) of 35.4% but the high availability frequency of 100% is Eleutheronema tetradactylum. The average value of the moderate diversity index (H'= 1.47), the moderate evenness index (J'= 0.48) and the low dominance index (D= 0.32). This condition shows that the community structure of the species captured by the gill net is in a fairly stable condition with the number of species that are spread fairly evenly and no species dominate each other.

scholarly journals Fish Community Structure in Air Remuding River, Riau Silip, Bangka Regency

2020 ◽  
Vol 14 (1) ◽  
pp. 49-58
Author(s):  
Hodri Msp Ubb
Keyword(s):  
Community Structure ◽  
Fish Community ◽  
Diversity Index ◽  
Fish Community Structure ◽  
Dominance Index ◽  
High Uniformity ◽  
Chemical Factors ◽  
Physical And Chemical ◽  
The Relationship ◽  
River Fish

Air Remuding River is  a river which located in Pangkal Niur Lama Hamlet, Riau Silip District, Bangka Regency. Air Remuding River is ± 1 km from Pangkal Niur Lama Hamlet. This study aims to analyze the structure of the fish community in the Air Remuding River and to analyze the relationship between the physical and chemical factors of the waters to the species composition of the fish in the Air Remuding River. This research  conducted in the month of January 2020 in the waters of the Air Remuding River, Pangkal Niur Lama Hamlet, Riau Silip District, Bangka Belitung Islands Province. The results of this study indicate that the most common fish caught in the Air Remuding river we're 2501 fishes (Rasbora bankanensis). Diversity Index (H '), Air Remuding River fish with a range of 0.66-0.72. included in the criteria of moderate diversity, while the Uniformity Index (E), Air Remuding River fish were high uniformity and the Dominance Index ranged from 0.19 to 0.23. The composition of fish species in the Air Remuding River correlates with DO, depth, current velocity and nitrate.

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