scholarly journals THE ABUNDANCE, DIVERSITY, AND THE DENSITY OF MOLLUSKS IN TUTUWOTO MANGROVE AREA OF ANGGREK DISTRICT, NORTH GORONTALO REGENCY, GORONTALO, INDONESIA

GeoEco ◽  
2019 ◽  
Vol 5 (1) ◽  
pp. 43
Author(s):  
Dewi Wahyuni Baderan ◽  
Marini Susanti Hamidun ◽  
Farid S M
Keyword(s):  
Species Diversity ◽  
Research Area ◽  
Survey Method ◽  
Mangrove Area ◽  
Research Site ◽  
Hexaplex Trunculus ◽  
Number Of Individuals ◽  
Anadara Granosa

<pre>The aim of the current study is to calculate the value of the abundance, diversity, and the density of phyla mollusks in the Tutuwoto mangrove area of Anggrek District. The survey method is used in this study as a method, which means that it collects the data directly at the research area. The observations were carried out under mangrove stands. The area of the observation plot is 5m x 5m. Phylum mollusks collected at the study site were counted by the number of individuals, abundance, diversity, and density of the types of each species. Sanon-Wienner formula is used to calculate the species diversity, Brower formula is used to calculate the density, and Odum formula is used to calculate the abundance of the species. The findings show that it is found that the reasearch about phylum mollusks in Tutuwoto mangrove area consisted of 6 (six) types namely <em>Terebralia sulcata, Terebralia palustris, Nerita articulate, Hexaplex trunculus, Anadara granosa, and Mactra grandis</em>. Based on the calculation of the abundance, diversity, and density of the mollusks phylum at the research site, there are several types that have the highest value. In the gastropod class, <em>Nerita articulata</em> has the highest score with an abundance of 30.41%, diversity of 0.36, and density of 0.17 ind / m2, followed by <em>Terebralia sulcata</em> with an abundance of 28.07%, diversity 0.36, and density of 0.16 ind / m2. However, the lowest is owned by <em>Terebralia palustris</em> with an abundance value of 17.54%, diversity of 0.31, and density of 0.10 ind / m2. The values of abundance, diversity, and density in the bivalve class have different values. The type of <em>Anadara granosa</em> has an abundance value of 53.06%, diversity of 0.34, and density of 0.08 ind / m2 while <em>Mactra grandis</em> has an abundance value of 46.94%, diversity of 0.36, and density of 0.07 ind / m2. Based on the predetermined criteria of the Gastropod class, it has the abundance in many categories, exceptional of <em>Terebralia palustris</em> which has sufficient criteria.</pre>

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

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.

scholarly journals ANALISIS STRUKTUR KOMUNITAS KEPITING DI KAWASAN MANGROVE STASIUN KELAUTAN UNIVERSITAS RIAU KELURAHAN PURNAMA KOTA DUMAI PROVINSI RIAU

2020 ◽  
Vol 25 (3) ◽  
pp. 194
Author(s):  
Fenti Rozanda ◽  
Aras Mulyadi ◽  
Syafruddin Nasution
Keyword(s):  
Community Structure ◽  
Species Diversity ◽  
Distribution Patterns ◽  
Survey Method ◽  
Species Dominance ◽  
Average Value ◽  
Mangrove Area ◽  
Transect Line ◽  
Cluster Distribution ◽  
Sesarma Reticulatum

This research was conducted in January 2019 in the mangrove area of Purnama Village, Dumai City, Riau Province. The purpose of this study was to determine the crab community structure which includes the type, abundance, crab distribution patterns, species diversity (H '), species uniformity (E), and species dominance (C) crabs. The method used in this study is a survey method. There are three observation stations with each of the three transects at each station, on each transect line there is a square plot with a size of 5x5 m2. Crab sampling is done quantitatively and qualitatively. Based on the results of the study it was found that the species of crabs identified at the area of the research were Sesarma reticulatum, S. guttatum, Uca dussumieri, U. rosea, U. vocans, Cardisoma carnifex, and Clistocoeloma merguinse. Furthermore, the abundance of crabs obtained is between 1560-2040 Ind / Ha with cluster distribution patterns. The average value of species diversity (H ') indicates moderate diversity, uniformity (E) indicates high species uniformity, and species dominance value (C) indicates no dominating species.This research was conducted in January 2019 in the mangrove area of Purnama Village, Dumai City, Riau Province. The purpose of this study was to determine the crab community structure which includes the type, abundance, crab distribution patterns, species diversity (H '), species uniformity (E), and species dominance (C) crabs. The method used in this study is a survey method. There are three observation stations with each of the three transects at each station, on each transect line there is a square plot with a size of 5x5 m2. Crab sampling is done quantitatively and qualitatively. Based on the results of the study it was found that the species of crabs identified at the area of the research were Sesarma reticulatum, S. guttatum, Uca dussumieri, U. rosea, U. vocans, Cardisoma carnifex, and Clistocoeloma merguinse. Furthermore, the abundance of crabs obtained is between 1560-2040 Ind / Ha with cluster distribution patterns. The average value of species diversity (H ') indicates moderate diversity, uniformity (E) indicates high species uniformity, and species dominance value (C) indicates no dominating species. 

scholarly journals Fish species diversity in headwaters streams of Paraguay and Paraná Basins

2007 ◽  
Vol 50 (6) ◽  
pp. 1033-1042 ◽  
Author(s):  
Yzel Rondon Súarez ◽  
Sabrina Bigatão Valério ◽  
Karina Keyla Tondado ◽  
Alexandro Cezar Florentino ◽  
Thiago Rota Alves Felipe ◽  
...  
Keyword(s):  
Species Richness ◽  
Species Diversity ◽  
Environmental Factors ◽  
Fish Species ◽  
Total Species Richness ◽  
Paraná Basin ◽  
Parana Basin ◽  
Number Of Individuals ◽  
Total Species ◽  
Fish Species Diversity

The influence of spatial, temporal and environmental factors on fish species diversity in headwater streams in Paraguay and Paraná basins, Brazil was examined. A total of 4,605 individuals were sampled, distributed in 60 species. The sampled streams in Paraná basin presented a larger total species richness (42) than Paraguay streams (40). However the estimated richness was larger in Paraguay basin (53) than Paraná streams (50). The streams of Paraná basin had a greater mean species richness and evenness, while more individuals per sample were found in the Paraguay basin. Difference between the sub-basins were found in the Paraguay basin, while for the basin of Paraná, richness and evenness vary significantly between the sub-basins, but the number of individuals varied seasonally. The most important environmental factors to species diversity and abundance were altitude, water temperature, stream width and stream depth for both the basins.

scholarly journals Studi Karakteristik Wisatawan Dan Upaya Pengembangan Produk Wisata Tematik Di Pantai Goa Cemara, Pantai Kuwaru, Dan Pantai Pandansimo Baru Kabupaten Bantul

Media Wisata ◽  
2021 ◽  
Vol 13 (2) ◽  
Author(s):  
Fian Damasdino
Keyword(s):  
Market Segmentation ◽  
Quantitative Research ◽  
Leisure Time ◽  
Sampling Technique ◽  
Research Area ◽  
Demographic Characteristics ◽  
Survey Method ◽  
Psychometric Characteristics ◽  
Margin Of Error ◽  
Research Objects

This research is a quantitative research using the survey method. The locations of the research area in the three tourist objects including Goa Cemara Beach, Kuwaru Beach, and Pandansimo Baru Beach. This study aims to analyze the tourist characteristics in the three research locations and to learn how to formulate a plan for the most appropriate tourism products at three locations sights. The approach used to analyze the tourist characteristics is the four elements of market segmentation: geographic, socio-demographic, psychographic, and behavioural.The samples of the research are 156 respondents with a margin of error of 8% done using purposive sampling technique during March to April 2015 in the three research locations. The data collection was taken by questionnaires, observation, and documentation. Once the data is collected and processed with quantitative analysis using statistical tools, frequency distribution, and cross table (crosstabs).The result shows that the geographic characteristics of tourists in the three locations are balanced between tourists from outside and inside Bantul Regency. Then, the socio-demographic characteristics of tourists in Goa Cemara Beach and Pandansimo Baru Beach are dominated by private employees/BUMN(state-owned corporation), aged 22-60 years old, married and repeater tourist, while tourists in Kuwaru Beach are dominated by students, under 22 years old, single status and first comer tourists.Furthermore, in terms of psychographics, tourists in the three locations who have psychometric characteristics prefer to get something plural, popular, and like to do common activities with the frequency of short stay visits. Lastly, the behaviour of tourists in the three research locations is dominated by doing recreation or having leisure time to enjoy the main attractions of the coastal landscape. The results of tourist characteristics of these three locations are used as the basis for planning of thematic tourism products in accordance with the character of the three research objects

scholarly journals POTENSI KESESUAIAN MANGROVE SEBAGAI DAERAH EKOWISATA DI DUSUN TANJUNG TEDUNG SUNGAI SELAN BANGKA TENGAH

2018 ◽  
Vol 12 (1) ◽  
pp. 65-73
Author(s):  
Susi Susi ◽  
Wahyu Adi ◽  
Suci Puspita Sari
Keyword(s):  
Data Analysis ◽  
Coastal Area ◽  
Research Method ◽  
Research Area ◽  
Conformity Index ◽  
Mangrove Species ◽  
Compatibility Index ◽  
Mangrove Area ◽  
Mangrove Ecosystems ◽  
Index Matrix

Tanjung Tedung Coastal Coast is located in Tanjung Pura Village, Sungai Selan Subdistrict, Bangka Tengah. Regency which has the potential to be developed into a mangrove ecowista area, because almost along the coastal area is overgrown with ecosystem mengrove. This study aims to identify the potential of mangrove ecosystems and calculate the Tourist Compatibility Index (IKW) potential of mangrove area as ecotourism area of mangrove. The data were collected from March to April 2018 in Tanjung Tedung Coastal Coast. The research method used is Purposive Sampling. Research area taken as many as 3 stations. The data analysis is based on tourism conformity index matrix (IKW). Data of mangrove tourism conformity parameter consisting of: mangrove thickness, mangrove density, mangrove species, tidal and biota object. The result of measurement of mangrove tourism match parameters are thickness at station I worth 303,57 m, station II worth 366,57 m and station III worth 1,061,44 m. Density of station I with value 0.11 ind / m². Station II worth 0.10 ind / m² and station III with value 0.16 ind / m². Found 9 Species of mangroves and other biota such as: fish, shrimp, crab, molluscs, reptiles, birds and other biota. The result of conformity analysis to be used as ecotourism area with IKW value of station I worth 78.95% with Appropriate category. Furthermore at station II IKW value is 78.95% with Appropriate category. and station III got the value of IKW worth 96.05% with category Very

scholarly journals Spatial distribution of slums and its association with disaster vulnerability in Yogyakarta City

2020 ◽  
Vol 200 ◽  
pp. 03011
Author(s):  
Djaka Marwasta ◽  
Theresia D. K. Rahayu
Keyword(s):  
Urban Areas ◽  
Secondary Data ◽  
Research Area ◽  
Survey Method ◽  
Gis Mapping ◽  
Population Census ◽  
Disaster Vulnerability ◽  
Data Survey ◽  
Quantitative Descriptive ◽  
Yogyakarta City

Slums commonly distributed in susceptible environment or in location that occupied by low economic household, especially in urban areas. Empirically, in Indonesia, the data about distribution and total area of slums is quite hard to be acquired, since slums indicators is not standardized yet. This study aimed to (1) identify the distribution of slums in Yogyakarta City, based on multi-sources data; and (2) elaborate the linkage between slums location and disaster vulnerability in research area. This research uses a mixed methods, i.e utilization of secondary data, survey method, and GIS mapping. Analysis units of this research are “Kelurahan”, where all “Kelurahan” which have slums are chosen as members of population (census technique). Indepth interview conducted in order to collect disaster vulnerability data in each “Kelurahan”. Informant that chosen as representative person in each “Kelurahan” are “Lurah” or “Secretary of Lurah”. All of the data are analyzed by qualitative and quantitative descriptive method. Conclusion of this study are: (1) Slums in Yogyakarta City distributed mainly along three main rivers, and (2) There are very closed association between slums area and disaster vulnerable zones.

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

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

scholarly journals The The diversity and abundance of Hymenoptera insects on tidal swamp rice field in Indragiri Hilir District, Indonesia

2020 ◽  
Vol 21 (3) ◽  
Author(s):  
ZAHLUL IKHSAN ◽  
HIDRAYANI ◽  
YAHERWANDI ◽  
HASMIANDY HAMID
Keyword(s):  
Species Diversity ◽  
Rice Field ◽  
Diversity Index ◽  
Human Life ◽  
Similarity Index ◽  
Pitfall Trap ◽  
Vital Role ◽  
Tidal Swamp ◽  
Abundance And Diversity ◽  
Number Of Individuals

Abstract. Ikhsan Z, Hidrayani, Yaherwandi, Hamid H. 2020. The diversity and abundance of Hymenoptera insects on tidal swamp rice field in Indragiri Hilir District, Indonesia. Biodiversitas 21: 1020-1026. Hymenoptera is one of the four largest insect orders and it plays a vital role in human life as pollinators, parasitoids, and predators. Hymenoptera parasitoids are particularly important as agents of biological control of pest. The objective of this research was to study the diversity and abundance of Hymenoptera on tidal swamp rice field in Indragiri Hilir District, Riau Province, Indonesia. Samplings were conducted in 3 sub-districts of rice production centers, namely Batang Tuaka, Keritang and Reteh, using four trapping techniques (i.e. insect net, malaise trap, pitfall trap, and yellow pan trap). Shannon diversity index (H '), Krebs evenness index (E), and Jaccard similarity index (Is) were calculated. We found 4,701 individuals consisting of 39 families and 319 species of Hymenoptera at the three studied areas. Tidal swamp rice in Indragiri Hilir District had a high species diversity of Hymenoptera parasitoids and Hymenoptera predators, but a moderate species diversity of Hymenoptera pollinators. Species diversity and evenness of Hymenoptera parasitoids and predators were higher in Keritang than in Batang Tuaka and Reteh. The families of Formicidae, Braconidae, Ichneumonidae, and Scelionidae had the highest number of species, while Formicidae, Scelionidae, Diapriidae, and Braconidae had the highest number of individuals. Based on these findings, the abundance and diversity of Hymenoptera insects in Indragiri Hilir District have the potentials to be developed as biological agents to control pests on tidal swamp rice in this area.

scholarly journals Fish Community and Mining Activity in Serayu River Banyumas Residency

2019 ◽  
Vol 8 (2S9) ◽  
pp. 795-799
Keyword(s):  
Species Diversity ◽  
Fish Community ◽  
Good Condition ◽  
Mining Activity ◽  
Survey Method ◽  
Species Variation ◽  
Sampling Point ◽  
Fish Community Structure ◽  
Downstream Area

The purpose of this research is to reveal and describe the quality of river waters and the fish comunity in Serayu river of Banyumas regency. The study was conducted using a survey method, with purposive random sampling technique. The study was conducted in Serayu river of Banyumas regency where three major rivers lead to it, namely Klawing river, Logawa river, and Tajum river. Fish sampled by spreaded net and handweb, with ten times sampling of each peripheral in each sampling point. Sampled fishes identified based on Kottelat et al. (1993) and verified on Biology Research Center, LIPI Cibinong and www.FishBase.org. Fish community structure analyzed by: Diverse, Cluster, and Multi Dimensional Scalling (MDS) of (Clarke and Warwick, 2001). The study found that water quality of physical and chemical parameters are in good condition. It includes temperature, flowrate, clarity, dissolved oxygen level, pH, and plankton species variation in Serayu River Banyumas Residency. Most species and individual number on Serayu River Banyumas Residency are from Cyprinidae Family. Species diversity are in low condition but there are no dominancies found. Fish abundance are higher in downstream area than in upstream area, but fish species diversity are lower in downstream area than in upstream area of Serayu River Banyumas Residency. Long period of mining activity could badly affect river fish’s life.

scholarly journals KEANEKARAGAMAN JENIS SEMUT (Formicidae) ARBOREAL DI HUTAN MANGROVE KELURAHAN SETAPUK BESAR KOTA SINGKAWANG

2019 ◽  
Vol 7 (3) ◽  
Author(s):  
. Mazlan ◽  
Siti Masitoh Kartikawati ◽  
. Burhanuddin
Keyword(s):  
Species Diversity ◽  
Mangrove Forest ◽  
Diversity Index ◽  
Survey Method ◽  
Ecosystem Stability ◽  
Tidal Level ◽  
Arboreal Ants ◽  
Nypa Fruticans ◽  
A Chain ◽  
Gathering Data

Arboreal ants are ants that do activities and spend their lives in tree. Roles of this organism are to serve as decomposers, pollinators, predators and indicators. Ant species diversity constitutes a chain for ecosystem stability. They are responsible as decomposing insects making their presence becomes ecologically vital. Research on ant species diversity in mangrove forest remains insufficient. One of the reasons possibly is that fact that mangrove is an ecosystem which is affected by sea tide. This research aims at gathering data about ant species diversity based on types of mangrove forest vegetation located in Setapuk Besar, Singkawang City. The research used a survey method by observing types of trees whose diameter was 10 cm and above. Additionally, the tree should have a large number of ants. The data was collected through fly sheet trap set under, in the mid, and above the tidal level. Findings revealed 6 types of ants consisting 4 sub-families in 6 types of the trees i.e. Rhizopora mucronata, Avicennia lanata, Hibiscus tiliaceus, Terminalia capatta, Nypa fruticans, and Bruguiera cylindrical.. Based on the diversity index of those 6 types of trees, the divercity of arboreal ants spesies could be categorized low (H’<1). The highest diversity was nypa fruticans vegetation by 0.325. This was because the tree contains sugar level and carbohydrate. The lowest diversity was Hibiscus tiliaceus and Termialia catappa. The H’ value was 0. One of the reasons was because only one species of ants can be found in both trees, namely Oecophylla smaragdina.Keywords: Arboreal Ants, Diversity, Mangrove, Singkawang

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