scholarly journals Struktur Komunitas Moluska di Padang Lamun Perairan Kepulauan Padaido dan Aimando Kabupaten Biak Numfor, Papua

2018 ◽  
Vol 3 (3) ◽  
pp. 219 ◽  
Author(s):  
Ludi Parwadani Aji ◽  
Andriani Widyastuti ◽  
Agustin Capriati
Keyword(s):  
Decision Making ◽  
Species Richness ◽  
Community Structure ◽  
Sampling Method ◽  
Similarity Index ◽  
Marine Biota ◽  
Seagrass Beds ◽  
High Similarity ◽  
Evenness Index ◽  
Index Value

<strong>Community Structure of Mollusca in Seagrass Beds Padaido and Aimando Islands Biak Numfor Regency, Papua.</strong> Mollusca is one of marine biota which is commonly found in seagrass beds and largely utilized by inhabitants in Biak. However, information about the diversity and abundance of mollusca in Padaido Aimando Islands, Biak Papua is still limited. The research about mollusca composition in the seagrass beds of Padaido Aimando Islands, Biak was conducted in April – October 2014. Sampling method using quadrat transect from the beach toward the sea at 15 stations. Mollusca samples preserved in alcohol 40%, then it was cleaned and identified in the laboratory. In this research was found 239 species of mollusca, which consists of 177 species from Gastropods and 62 species from Bivalves. Mollusks gastropod that have high distribution is <em>Monetaria annulus, Conomurex luhuanus</em> dan <em>Canarium urceus</em>, while of class Bivalvia is <em>Anadara antiquata</em>. The highest value index of species diversity (H) is found at Station 7 (3.951) and the lowest at Station 14 (3.077). Value index of species richness (d) ranged between 9.041 and 10.883 and evenness index value (J) ranged between 0.768 and 0.99. While the dominancy index ranged from 0.020 to 0.092. Based on similarity index, Station 3 has a high similarity with station 4. This research provides valuable information on the diversity and abundance of mollusca which can be useful for decision making aimed at the management of mollusca resource in Biak.

Molluscs Diversity in Coastal Ecosystem of South Biak, Papua

2017 ◽  
Vol 2 (1) ◽  
pp. 25 ◽  
Author(s):  
Ludi Parwadani Aji ◽  
Andriani Widyastuti
Keyword(s):  
Species Richness ◽  
Community Structure ◽  
Sampling Method ◽  
Diversity Index ◽  
Similarity Index ◽  
Coastal Areas ◽  
Seagrass Beds ◽  
Simpson Index ◽  
Transect Line ◽  
Evenness Index

Coastal areas of Biak Island consist of three major ecosystems: the mangrove, seagrass beds, and coral reefs where a variety of molluscs live. Mollusc diversity in South Biak waters was investigated in September 2011. The observation was conducted at 4 locations, i.e. Paray, Ambroben, Yenures, and Sorido with 2 stations at each location. The study aimed to obtain information on the diversity and community structure of the benthic molluscs (gastropods and bivalves) on the coastal areas of South Biak waters. Sampling method applied was quadrate-transect line in intertidal areas from inshore to offshore. The molluscs (epifauna and infauna) found inside the quadrate-transect were counted and identified. The result showed high benthic mollusc diversity with a total of 94 species, consisting of 75 species of gastropods and 19 species of bivalves. The most widespread gastropod found in all stations was Nassarius sp., while for bivalves was Tellina sp. The highest value of diversity index (H) was 2.96 found in Paray 1 and the lowest was 0.58 in Yenures 1. The Evenness index (E) and Simpson index (D) ranged from 0.27 to 0.96 and from 0.06 to 0.72 respectively. Species richness (d) ranged from 2.89 to 6.84 and similarity index from 3.90 to 42.40.  

scholarly journals STUDI KOMUNITAS RUMPUT LAUT PADA BERBAGAI SUBSTRAT DI PERAIRAN PANTAI PERMISAN KABUPATEN CILACAP

2014 ◽  
Vol 1 (1) ◽  
pp. 57 ◽  
Author(s):  
Eti Ferawati ◽  
Dwi Sunu Widyartini ◽  
Ilalqisny Insan
Keyword(s):  
Community Structure ◽  
Diversity Index ◽  
Similarity Index ◽  
Survey Method ◽  
Central Java ◽  
Evenness Index ◽  
Index Value ◽  
Shell Fragments

Seaweed naturally grows in substrate of sand, mixing between sand, mud and shell fragments, and also coral. Previous researches stated that there were types of seaweed that able to grow in more than one substrates. The aims of this research was to know the community structure such as diversity, domination, evenness, and similarity of seaweed on various substrates in Permisan beach, Central java. This research used survey method and samples were randomly selected for each substrate with quadrate of 1 x 1 m2. The research found that 20 kinds of seaweeds with biomass for about 4,669 g. Seven kinds of seaweed that grow in sand substrate with biomass for about 0,636 g, 20 kinds of seaweed in coral substrate with biomass for about 2,399 g, and 12 kinds of seaweeds in mixing substrate with biomass for about 1,634 g. Diversity index value in Permisan beach was ranging between 0,064-0,828 and categorized as low. Domination index value was ranging between 0,213-1,193, which means there was dominating variety. Evenness index value was ranging between 0,021-0,276, which means the community was unstable. The highest similarity index value was coral substrate-mixing for about 75%.

scholarly journals COMMUNITY STRUCTURE ECHINODERMS (ASTEROIDEA, OPHIUROIDEA, ECHINOIDEA AND HOLOTHUROIDEA) IN THE MARINE NATIONAL PARK EAST SULAWESI WAKATOBI

2016 ◽  
Vol 8 (1) ◽  
pp. 357-366 ◽  
Author(s):  
Eddy Yusron
Keyword(s):  
Species Richness ◽  
Community Structure ◽  
National Parks ◽  
National Park ◽  
Diversity Index ◽  
Dead Coral ◽  
Evenness Index ◽  
Different Types ◽  
High Level ◽  
Richness Index

A study on Echinoderms community structure in marine national parks of Wakatobi, Southeast Sulawesi was conducted in six locations, i.e., Waha Beach, Coastal Sombo, Beach Houses, Beach Kapota, Banakawa beach, and Umala beach in October 2013. All of the six parks were located the Wakatobi territorial waters with coordinates of 5°06'25" S and 123°124'10 E. The results showed of 18 species of echinoderms representing six different types of Asteroidea, two types of Ophiuroidea, six types of Echinoidea, and four types of Holothuroidea. Group of starfish or Asteroidea was the most prominent on seagrass area. Based on the six transects sites, it turned out that the group of starfish (Asteridea) occupied a relatively high level of species richness. From the quantitative analysis values, we obtained diversity index (H) of 1.105 in Sombu, the highest evenness index (J) of 0.989 was found in Umala, and the highest species richness index values (D) of 0.132 was obtained in kapota. It seemed that all echinoderm groups were generally like seagrass microhabitat (12 types). While, sand and dead coral habitats were only occupied by 8 (eight) echinoderm groups. Keywords: echinoderms, diversity, Wakatobi, Southeast Sulawesi

scholarly journals Tingkat Pencemaran Berdasarkan Saprobitas Plankton di Perairan Pelabuhan Benoa, Kota Denpasar, Provinsi Bali

2017 ◽  
Vol 4 (1) ◽  
pp. 96 ◽  
Author(s):  
Ni Putu Eva Damayanti ◽  
I Wayan Gede Astawa Karang ◽  
Elok Faiqoh
Keyword(s):  
Environmental Pollution ◽  
Primary Productivity ◽  
Random Sampling ◽  
Sampling Method ◽  
Environmental Changes ◽  
Diversity Index ◽  
Total Abundance ◽  
Saprobic Index ◽  
Evenness Index ◽  
Index Value

Plankton is organism that susceptible to environmental changes that used as indicator of environmental pollution by saprobic index because plankton has important role in affecting the water primary productivity. The research about plankton saprobic in Benoa Harbour is never done before. The aim of this research is to explain the structure of community and the level of plankton saprobic at Benoa Harbour. This research using random sampling method for determine the station. The result explained that there was 17 species of plankton in the waters of Benoa Harbor from two classes such as Bacillariophyceae, Dinophyceae on phytoplankton and from five classes such as Magnoliopsida, Malacostraca, Maxillopoda, Globothalamea and Hexanauplia on zooplankton. The total abundance of plankton ranges from 1.117.172 Individual / Liter- 1.626.163 Individual / Liter. The zooplankton diversity index in the waters of Benoa Harbor ranges from 1.06 to 1.58 and phytoplankton ranges from 1.02 to 155. This indicates that the value of diversity in all observation stations is categorized into low biodiversity. Zooplankton evenness index value in the waters of Benoa Harbor ranged from 0.73-0.88 and phytoplankton ranged from 0.71-0.96. This indicates that the index of evenness is relatively high. The dominant value of zooplankton in the waters of Benoa Harbor ranges from 0.24-0.43 and phytoplankton ranged from 0.22-0.41. This indicates that the dominance is relatively low. Saprobik Index (SI) value ranges from 1.0-1.6 and Tropic Saprobic Index (TSI) ranges from 1.76-1.96. This indicates that the waters of Benoa Harbour is categorized mild contaminated conditions until not contaminated.

scholarly journals Gastropod Community Structure in Seagrass Waters in Panjang Island, Jepara, Central Java

2020 ◽  
Vol 4 (2) ◽  
pp. 48-55
Author(s):  
Tri Adi Nugroho ◽  
Ria Azizah ◽  
Ali Djunaedi ◽  
Delianis Pringgenies
Keyword(s):  
Community Structure ◽  
Similarity Index ◽  
Community Similarity ◽  
Frame Size ◽  
High Category ◽  
Central Java ◽  
Density Index ◽  
Index Value ◽  
Specific Species ◽  
Seagrass Density

Seagrass is a community that consists a large number of organisms which associated within. Organisms associated with seagrass are gastropods. The purpose of this research is to determine the structure of gastropods community at seagrass on Pulau Panjang, Jepara. Exploration methods was applied and data was analyzed descriptively. The location of research are divided into 3 locations based on 3 different densities of seagrass : sparse, medium and dense. Every location consists of 4 stations with 3 repetitions. The research was held during Desember 2014. Sampling using quadratic a frame size of 1x1 m. The result, there are were 15 genera gastropods of 8 families as followed Trochus (Ciridae), Strombus (Strombidae), Turbo, Astralium, Dentarene, Liotina (Turbinidae), Cantharus, Nassaria, Engina  (Buccinidae), Cerithium, Rhinoclavis, Clypeomorus (Cerithiidae), Morulla (Muricidae), Columbella (Columbellidae), and Neritodryas (Neritidae). The abundance in location I 108.75 ind/????2 with dense of seagrass density, location II 91 ind/m2 with medium of seagrass density, and location III 47,25 ind/m2 with rare of seagrass density. Index value of Gastropod diversity classified medium category, index value of gastropod similarity classified high category, it means abudance from each spesies can be said to be similar, and evenly distributed and not on domination by a specific species.  Community similarity index classified in the category of medium to very large 

scholarly journals Community structure of Echinoderms in seagrass beds of Pacitan beaches, East Java, Indonesia

2019 ◽  
Vol 20 (7) ◽  
Author(s):  
FARID KAMAL MUZAKI ◽  
EDWIN SETIAWAN ◽  
GHULAM FATHIR AUTHAR INSANY ◽  
NURUL KUSUMA DEWI ◽  
IWENDA BELLA SUBAGIO
Keyword(s):  
Species Richness ◽  
Community Structure ◽  
Sea Urchins ◽  
Diversity Index ◽  
Diversity Indices ◽  
Seagrass Beds ◽  
Sea Star ◽  
Echinometra Mathaei ◽  
Belt Transect ◽  
Diadema Setosum

Abstract. Muzaki FK, Setiawan E, Insany GFA, Dewi NK, Subagio IB. 2019. Community structure of Echinoderms in seagrass beds of Pacitan beaches, East Java, Indonesia. Biodiversitas 20: 1787-1793. In this study, we attempt to access diversity and community structure of Echinoderms on seagrass beds in each three belt transect (width 2 m, length 100 m) in Tawang and Pidakan beaches, Pacitan, East Java, Java. Observed parameters were species richness, composition, and abundance, as well as diversity indices: Shannon-Wiener's diversity index (H'), Simpson's dominance index (D) and Pielou's evenness index (J). At the end of the study, we identified one species of sea star (Asteroidea), seven species of brittle stars (Ophiuroidea), ten species of sea cucumbers (Holothuroidea) andnine species of sea urchins (Echinoidea). The most dominant species were Ophiocoma dentata (F. Ophiocomidae), Diadema setosum (F. Diadematiidae), Ophiomastix annulosa (F. Ophiocomidae) and Echinometra mathaei (F. Echinometridae). Value of H’ ranged from 0.538 to 1.252 in Tawang and 1.041 to 1.704 in Pidakan; which showing higher species richness and diversity in Pidakan. Echinoderm in the study area was not evenly distributed; D. setosum was very dominant in Tawang beach, while those three other species were more common in Pidakan. Furthermore, most of Holothuroid and Ophiuroid were found only in Pidakan which have relatively more complex habitat.

scholarly journals Struktur Komunitas Landak Laut di Padang Lamun Pulau Kodingareng, Kepulauan Spermonde

2021 ◽  
Vol 24 (1) ◽  
pp. 63-70
Author(s):  
Wilma Moka ◽  
Dwi Fajriyati Inaku ◽  
Muhammad Rais
Keyword(s):  
Community Structure ◽  
Species Composition ◽  
Sampling Method ◽  
Marine Organism ◽  
Sea Urchins ◽  
Diversity Index ◽  
Seagrass Beds ◽  
Ecological Value ◽  
Tripneustes Gratilla ◽  
Diadema Setosum

Sea urchins is marine organism from Phylum Echinoderms which have high economic and ecological value. Therefore, we need data on the current condition of sea urchins, especially those in the Spermonde Islands. Through this research, it is hoped that the community structure and distribution of sea urchins in Kodingareng Lompo Island, Spermonde Islands can be known. The sampling method used was quadrant transects measuring 5x5 meters on 4 plots in the seagrass area on Kodingareng Lompo Island. The data analysis used was species composition, density, relative density, diversity index, and uniformity index. The results obtained show that there are three species of sea urchins, namely Diadema setosum, Mespilia globulus, and Tripneustes gratilla, basen on morphology identification. Diadema setosum is species with the highest species composition value, namely 92%. The density value (0.017 individuals / m2) and the diversity of sea urchins (H '<1) in the seagrass beds at Kodingareng Island are classified as low. It is hoped that the data obtained from this research can become a reference for the management of biological resources in the Spermonde Islands in the future. Landak laut merupakan salah satu kelas dari Filum Echinodermata yang memiliki nilai ekonomis dan ekologis yang cukup tinggi. Gonad landak laut telah sejak lama dikonsumsi di berbagai negara dunia, dan bahkan sekarang cangkangnya banyak dijadikan souvenir. Karena itu diperlukan data kondisi terkini landak laut, khususnya yang ada di Kepulauan Spermonde. Melalui penelitian ini diharapkan dapat diketahui struktur komunitas maupun sebaran landak laut yang ada di Padang Lamun Pulau Kodingareng Lompo, Kepulauan Spermonde. Metode sampling yang digunakan adalah transek kuadran ukuran 5x5 meter pada 4 plot pada daerah padang lamun di Pulau Kodingareng Lompo. Analisis data yang digunakan adalah komposisi jenis, kepadatan, kepadatan relatif, indeks keanekaragaman, dan indeks keseragaman. Hasil yang didapatkan memperlihatkan bahwa terdapat tiga genus landak laut, yaitu Diadema, Mespilia, dan Tripneustes. Diadema sp. merupakan genus dengan nilai komposisi jenis tertinggi yaitu 92%. Nilai kepadatan (0,017 individu/m2) dan keanekaragaman landak laut (H’<1) di padang lamun Pulau Kodingareng tergolong rendah. Data yang didapatkan dari penelitian ini diharapkan dapat menjadi bahan acuan untuk pengelolaan sumberdaya hayati di Kepulauan Spermonde ke depannya.

scholarly journals KEANEKARAGAMAN DAN KOMPOSISI IKAN PADA KONDISI PASANG DAN SURUT DI MUARA SUNGAI KELAY KABUPATEN BERAU KALIMANTAN TIMUR

2019 ◽  
Vol 10 (2) ◽  
pp. 11
Author(s):  
Yudistira Yudistira ◽  
Jusmaldi Jusmaldi ◽  
Medi Hendra
Keyword(s):  
Species Diversity ◽  
Fish Species ◽  
Sampling Method ◽  
Diversity Index ◽  
High Tide ◽  
Similarity Index ◽  
Wiener Index ◽  
Dominance Index ◽  
East Kalimantan ◽  
Evenness Index

Research on diversity and composition of fish at low tide and high tide condition in downstream Kelay River, District Berau, East Kalimantan is not yet know. The purpose of this research was to determine diversity and composition of fish that present at low tide and high tide condition in downstream Kelay River. In research using purposive sampling method and various sizes gill nets used. Results of this research shows that fish were collected at three locations sampling in downstream Kelay River consist of 14 species, 9 families, and 953 individuals. Based on the number of species, diversity Shannon-Wiener index and dominance index has stable of communities, with high value of diversity index (H'=1.975), high evenness index (E=0.749), and low value of dominance index  (D= 0.173). The number of fish species found at low tide were 11 species and at high tide were 12 species. The similarity index of fish species at low tide and high tide condition were 64.3%.

scholarly journals Makrozoobentos Diversity in Various Substrates Type in Way Sindalapai River, Liwa Botanical Garden

2020 ◽  
Vol 7 (1) ◽  
pp. 47-53
Author(s):  
Rani Setiana ◽  
Tugiyono Tugiyono ◽  
Gregorius Nugroho Susanto ◽  
Suratman Suratman
Keyword(s):  
Food Source ◽  
Sampling Method ◽  
Diversity Index ◽  
Botanical Garden ◽  
Aquatic Biota ◽  
Dominance Index ◽  
Sustainable Resource Management ◽  
Evenness Index ◽  
Basic Concepts ◽  
Index Value

The study of macrozoobenthos diversity in Way Sindalapai River can be used as one of the basic concepts in sustainable resource management in Liwa Botanical Garden area. Macrozoobenthos has an important role in the aquatic ecosystem, such as a food source for aquatic biota and as a detritivore. This study aims to determine the diversity of macrozoobenthos based on different sediment substrates in Way Sindalapai River, Liwa Botanical Garden, West Lampung. This study uses a purposive sampling method based on differences in the sediment substrates: muddy, sandy, rocky, and scrub with 3 replications. Sampling was carried out using a stratified filter and tweezers to separate the organism from the substrate. Samples were preserved in 70% alcohol and were identified by identification books at the Ecology Laboratory, FMIPA Universitas Lampung. The results of the study found 10 macrozoobenthos orders with a total of 155 individuals included in 13 families. The results of the calculation of diversity index values (H ') macrozoobenthos for all types of 2.26 (medium category). The highest macrozoobenthos dominance index (D) of the four substrates is in the rocky substrate that is 0.41 (low category). While the evenness index value (E) of macrozoobenthos in the Sindalapai Way River was 0.44 (medium category).

scholarly journals Supplementary Materials Tree Stands and Liana Community in Royal Belum State Park, Malaysia

2018 ◽  
Vol 8 (2) ◽  
pp. 75-83
Author(s):  
Zakaria Rahmad ◽  
Syafiq Johari ◽  
Gbenga Festus Akomolafe
Keyword(s):  
Species Richness ◽  
Tree Species ◽  
Similarity Index ◽  
Diversity Indices ◽  
High Similarity ◽  
Diameter At Breast Height ◽  
Breast Height ◽  
Baseline Information ◽  
Study Sites ◽  
High Diversity

The diversity of lianas and trees were studied in five study sites of 100 x 20 m within the Royal Belum State Park, Malaysia with a view to provide baseline information on their incidence, taxonomy and ecological distributions. The sites include Sungai Kejar, Sungai Papan, Sungai Papan 2, Teluk Gopal and Sungai Kooi with at least 1000 m apart. These plots were further sub-divided into five sub-plots of 20 x 20 m each. Lianas with a diameter at breast height (dbh) ≥ 1 cm and trees with dbh ≥ 10 cm were identified and frequencies of occurrence were determined. Lianas comprising 92 species from 23 families while trees comprising 221 species and 48 families were enumerated. Annonaceae was the richest family of lianas and trees (19 species and 23 species respectively). Connarus (Connaraceae) and Spatholobus (Fabaceae) had the highest number of lianas (six species) whilst Syzygium (Myrtaceae) had the highest number of trees (11 species). There are significant differences in all the diversity indices among the study sites, except between Sungai Papan and Teluk Gopal which were the richest and most diverse in liana species. These two sites also showed high similarity index in liana species (0.50) followed by Sungai Kejar and Sungai Papan 2 (0.37). Sungai Kejar was however observed to have the highest tree species richness. These study sites could be described as very rich with a high diversity of lianas and trees. Although, it is richer in trees than lianas which means that the level of disturbance of the park is very low.

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