scholarly journals Seaweed Species Composition, Abundance and Diversity in Drini and Kondang Merak Beach, Java

2018 ◽  
Vol 47 ◽  
pp. 03006
Author(s):  
Taufiq Ahmad Romdoni ◽  
Ajeng Ristiani ◽  
Maria Dyah Nur Meinita ◽  
Bintang Marhaeni ◽  
Setijanto
Keyword(s):  
Species Composition ◽  
Diversity Index ◽  
Sampling Technique ◽  
Survey Method ◽  
Enteromorpha Flexuosa ◽  
Transect Sampling ◽  
Abundance And Diversity ◽  
Different Characteristics ◽  
Physical And Chemical ◽  
Beach Survey

The different characteristics of subtrate might give influence on species composition, abundance and diversity of seaweed. Kondang Merak and Drini Beach are two beaches in Java Island which have different subtrate characteristic. The aim of this study is to investigate seaweed composition, abundance and diversity in Drini Beach and Kondang Merak Beach. Survey method and quadrant transect sampling technique were applied in this study. The result showed that 13 species of seaweed were found at Drini Beach and 18 species of seaweed were found in Kondang Merak Beach. The composition of the seaweed at Drini Beach and Kondang Merak Beach were dominated by Rhodophyta (69% and 56%). Enteromorpha flexuosa was the most abundant seaweed at Drini Beach, while at Kondang Merak Beach was dominated by Chaetomorpha crassa. The seaweed diversity index of Kondang Merak Beach (2,08) was higher than Drini Beach (1,27). Physical and chemical parameters were categorized as the optimal for the growth of the seaweed.

scholarly journals Assessment and Composition of Fish in the River District Maro Merauke

2018 ◽  
Vol 73 ◽  
pp. 04006
Author(s):  
Edy H.P Melmambessy ◽  
Irianis L. Latuperissa ◽  
Marius Agustinus Welliken ◽  
Nova Suryawati Monika ◽  
Rosa Delima Pangaribuan
Keyword(s):  
Data Analysis ◽  
Species Composition ◽  
Diversity Index ◽  
Survey Method ◽  
Frequency Diversity ◽  
Lates Calcarifer ◽  
Dominance Index ◽  
Gill Net ◽  
Scomberomorus Commerson ◽  
Index Value

Maro River is one of the major rivers in Merauke Regency that has a width of about 43-900 m and length of 300 km. The purpose of this study is to find out the type and composition of fish caught using gill net in Maro River, Merauke Regency. This study was conducted in Maro River, Merauke Regency from May to June 2014. It was conducted using survey method. The data analysis included: species composition, relative abundance, availability frequency, diversity index and dominance index. The results of showed 1,084 fish in 17 species with the following composition; 490 of Kurtus gulliveri species (37,01%), 212 of Eleutheronema tetradactylum species (20,33%), 170 of Polydactylus plebeius species (16,30%), 75 of crassilabris Cinetodus species (7,19%), 64 of Cinetodus froggatti species (6,14%), 37 of Argyrosomus amoyensis species (3,55%), 20 of Mugil cephalus species (1,92%), 15 of Megalops cyprinoides species (1,53%), 15 of Thryssa scratchleyi species (1,4%), 12 of Lebtobrama sp species (1,15%), 9 of Lates calcarifer species (0,86%), 7 of Marilyna meraukensis species (0,67%), 7 of Scomberomorus commerson species (0,67%), 5 of Nibea squamosal species (0,48%), 4 of Rhinoptera javanica species (0,38%), 3 of Harpadon microchir species (0,29%) and 1 of Datnioides campbelli species (0,10%). Based on the availability frequency, there are 37 species with a percentage of 100%, 37 species with 67% and 7 species with 33%. The diversity of fish has a moderate value of 1<H’<3. The obtained dominance index value is close to 0, then it is stated that there is no species found to be dominant.

Phytoplankton species turnover controlled by physical forcing at different time scales

2008 ◽  
Vol 65 (1) ◽  
pp. 47-60 ◽  
Author(s):  
Alexandrine Pannard ◽  
Myriam Bormans ◽  
Yvan Lagadeuc
Keyword(s):  
Species Composition ◽  
Time Scale ◽  
Phytoplankton Community ◽  
Diversity Index ◽  
Species Turnover ◽  
Rate Of Change ◽  
Original Structure ◽  
Short Term ◽  
Physical Forcing ◽  
Physical And Chemical

Changes in the physical and chemical environment induced by forcing events such as wind and rain can control the short-term dynamics of the phytoplankton community of inland waters. In two temperate reservoirs, species composition, diversity index, and species dynamics were characterized over periods of 3 weeks during different seasons, in parallel with changes in the physical and chemical structure of the water column. Dominant species and diversity index were shown to be controlled by environmental factors fluctuating on a seasonal and weekly time scale, whereas some rarer species responded to wind events and were indicators of a very short-term environmental change. As a consequence of the response of indicator species, the rate of change in species composition increased following meteorological events. Shifts in species composition were observed during each sampling period, except during the strongest stratification period. The shifts were associated with a modification of resource availability or intensity of stratification. We found that the resistance of the phytoplankton community to short-term physical forcing by wind increased with intensity of stratification. After the forcing event, the community did not return to its original structure because of modifications of the physical and chemical conditions induced by meteorological forcing on a weekly time scale.

scholarly journals KEANEKARAGAMAN JENIS GASTROPODA DI KAWASAN HUTAN MANGROVE DI KELURAHAN SETAPUK BESAR KOTA SINGKAWANG

2019 ◽  
Vol 7 (1) ◽  
Author(s):  
. Mardi ◽  
M Sofwan Anwari ◽  
. Burhanuddin
Keyword(s):  
Mangrove Forest ◽  
Positive Impact ◽  
Diversity Index ◽  
Sampling Technique ◽  
Forest Area ◽  
Survey Method ◽  
Environmental Damage ◽  
High Level ◽  
Coarse To Fine

Mangrove Surya Perdana Mandiri is a conservation forest area that has a positive impact on the environment and fauna habitat. The main purpose of planting or reforestation in the Surya Perdana Mandiri mangrove forest area is that there are concerns about the high level of abrasion and environmental damage, so mangrove planting in the coastal area, especially the Setapuk Besar Village, Singkawang North Subdistrict. Gastropods is a group of shelled invertebrates and has the main characteristic of using its legs to walk. Gastropoda is a group of animals from mollusc phyla that can live on the type of substrate from coarse to fine. This study aims to examine the diversity of gastropods in the Surya Perdana Mandiri mangrove forest in Setapuk Besar Village, Singkawang Utara Subdistrict. The research method used the survey method. Determination of the location of gastropod research was carried out based on Purposive sampling technique. The results of observations carried out were 8 species consisting of 5 families. Line 1 consists of 63 individuals in line 2 consisting of 86 individuals and line 3 consists of 74 with individual totals of 223. Diversity index of line 1 with value H ̅ = 0.52, line 2 with value H ̅ = 0.56 and path 3 with the value H ̅ = 0.62. Based on these values, species diversity (H ̅) in each research line is categorized as having low diversity.Keywords: Diversity, Gastropods, Surya Perdana Mandiri Mangrove

scholarly journals Short Communication: Species composition and diversity of vegetation in dryland agricultural landscape

2020 ◽  
Vol 22 (1) ◽  
Author(s):  
Ida Ardiyaningrum ◽  
MARIA THERESIA SRI BUDIASTUTI ◽  
KOMARIAH KOMARIAH
Keyword(s):  
Species Composition ◽  
Agricultural Landscape ◽  
Short Communication ◽  
Diversity Index ◽  
Sampling Technique ◽  
Terrestrial Ecosystems ◽  
Importance Value Index ◽  
Importance Value ◽  
Vegetation Diversity ◽  
Wiener Diversity Index

Abstract. Ardiyaningrum I, Budiastuti MTS, Komariah. 2021. Short Communication: Species composition and diversity of vegetation in dryland agricultural landscape. Biodiversitas 22: 65-71. Drylands are a part of the terrestrial ecosystems with a relatively larger area compared to wetlands. Selo has dryland with steep slopes and high rainfall, resulting in relatively high soil erosion. The land use in this sub-district is dominated by plantations and agriculture, with conditions that have not been fully balanced by trees as a means of controlling erosion and supporting vegetation diversity. Therefore, studies on biodiversity are important as an indicator of dryland sustainability, especially in terms of soil and water conservations. This research aimed to study the species composition and diversity of vegetation in the dryland agricultural landscape in Selo Sub-district, Boyolali District, Central Java Province, Indonesia. Vegetation analysis was performed by using the quadratic sampling technique for tree category, pole category, sapling category, and seedling categories. The results indicated that Fabaceae had the highest number of species. Tree species with the highest Importance Value Index were Toona sureni, Artocarpus heterophyllus, and Casuarina junghuhniana, respectively. The Shanon-Wiener Diversity Index showed that the vegetation at tree, pole, and sapling stages had a moderate diversity, and seedling-stage vegetation had a low diversity.

scholarly journals Short Communication: Bird community and it’s conservation implications in Gunung Tunak Nature Park, Lombok, Indonesia

2019 ◽  
Vol 20 (6) ◽  
Author(s):  
GITO HADIPRAYITNO ◽  
AGIL AL IDRUS ◽  
I GDE MERTHA ◽  
M LIWA ILHAMDI ◽  
I WAYAN SUANA
Keyword(s):  
Diversity Index ◽  
Bird Species ◽  
Bird Community ◽  
Iucn Red List ◽  
Survey Method ◽  
Important Indicator ◽  
Conservation Implications ◽  
Bird Fauna ◽  
Nature Park ◽  
Abundance And Diversity

Abstract. Hadiprayitno G, Al Idrus A, Mertha IG, Ilhamdi ML, Suana IW. 2019. Birds community and it's conservation implications in Gunung Tunak Nature Park, Lombok, Indonesia. Biodiversitas 20: 1753-1757.  Bird community is an important indicator of ecosystem health. A study was conducted in Gunung Tunak Nature Park to analyze the composition of bird species and the abundance and diversity of bird species. Data were collected by survey method from May to August 2017 on three trails. The bird fauna of  Gunung Tunak Nature Park consisted of 32 species belonging to 27 families and 10 orders. The order Passeriformes accounted for the dominant family and species, with an abundance of 61.6%. The species with the highest abundance is Zosterops chloris (13.9%), following by Orthotomus sepium (12.2%), and Streptopelia chinensis (10.4%). While the diversity index was 3.03, indicating that the bird community in Gunung Tunak Nature Park is still well preserved. Five species are of high conservation priority based on protected by Indonesian Law, Endemicity of Wallacea, and the IUCN Red list i.e., Megapodius reinwardt, Pitta elegans, Caloenas nicobarica, Lalage sueurii, and Dicrurus densus.

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 Microalgae Diversities in Different Depths of Sendang Biru Beach, Malang East Java

2020 ◽  
Vol 8 (3) ◽  
pp. 135-142
Author(s):  
Yustika Aulia Rahma ◽  
Getrudis Wihelmina ◽  
Sugireng Sugireng ◽  
Tri Ardiyati
Keyword(s):  
Water Quality ◽  
Aquatic Environment ◽  
Diversity Index ◽  
Central Zone ◽  
Sampling Technique ◽  
Edge Zone ◽  
Phytoplankton Diversity ◽  
Abundant Phytoplankton ◽  
Index Value ◽  
Physical And Chemical

Sendang Biru beach is a one of the coastal area located in Sumbermanjing Wetan, Malang, East Java-Indonesia. As a sea tourism, there are another residents activities such as fishing, fish landing and auction in Malang. That activities can caused pollution on the Sendang Biru aquatic environment. The research aim were to describe the water quality of Sendang Biru aquatic environment based on phytoplankton diversity. This research used several data collection techniques, that were microalgae sampling technique and measurement of physical and chemical water quality. Phytoplankton found in Sendang Biru Beach consists of 47 genus that are genus from seven divisions, Bacillariophyta, Chlorophyta, Cyanophyta, Euglenophyta, Dinophyta, Chrysophyta and Charophyta. The most abundant phytoplankton while having the Indeks Nilai Penting (INP) at the edge zone is the genus Oscillatoria sp. (the abundance is 4368000 Ind/L and INP 26,288). In the central and inner zones are both dominated by Coscinodiscus sp. (The abundance of center zone 4992000 Ind/L and INP 30,499; the abundance of inside zone is 9464000 Ind/L and INP 40,773). The level of diversity of phytoplankton in the three area of Sendang Biru beach are 2,297 in the edge zone; 2,37 in the central zone, and 1,8 in the inner zone. The pollution status of Sendang Biru beach can be classified as polluted moderately based on diversity index value on three different zone in the Sendang Biru Beach.

scholarly journals The Composition, Abundance, and Biodiversity of the Insect Family of the Hymenoptera Order on Swampy Wetlands (SW) and Land Conversion (LC) in Palembang City

2020 ◽  
Vol 20 (3) ◽  
pp. 396
Author(s):  
Riyanto Riyanto
Keyword(s):  
Diversity Index ◽  
Survey Method ◽  
Land Conversion ◽  
Total Abundance ◽  
Abundance Index ◽  
Abundance And Diversity ◽  
Almost All ◽  
Number Of Individuals ◽  
Insect Family

Urban development and population growth in the Palembang city, lowland swamps have been converted into swamps (SW) and land conversion (LC). Changes in habitat certainly have an impact on the composition, abundance, and diversity of the insect family of the Hymenoptera order. The purpose of writing this article is to inform the composition, abundance, and diversity of insect families of the Hymenoptera order in the SW and LC lands of Palembang city. This study used a survey method by exploring each research location four times. Determination of the research location using purposive sampling method with the reason to get different habitat conditions. The collection of insects is carried out in two ways, namely trapping and hands collecting. The results showed that 18 families of the Hymenoptera order, namely 4 to 7 families were found in SW land and 8 families were found in LC land. The number of individuals on SW land was 6,351 and on LC land was 2,297. The Apidae, Formicidae, Ichneumonidae, Platygastridae, Sphecidae, and Vespidae families are found in almost all fields. The total abundance index of the Hymenoptera order family in SW land (73.438%) was higher than the index of the total abundance of the Hymenoptera order family in the LC land (26.561%). The highest family abundance index was Formicidae, namely 65.101%, followed by the Vespidae family (26.237%) and the Apidae family (5.087%). The diversity index of the Hymenoptera order in the LC land had a higher value (2.741) than the diversity index in the SW field (2.165). The conclusion is that the composition of the insect family of the Hymenoptera order in LC land was higher than in SW land, but the number of individual insects in SW land was higher than in LC land. The abundance index of the Hymenoptera order in SW land was higher than that in LC land. The insect diversity index of the Hymenoptera order in LC land was higher than in SW land. It is recommended to research the role of various insect species from the Hymenoptera order in the SW land and LC land of the  Palembang city.

scholarly journals Etnobotani Buah Edibel Pada Masyarakat Dayak Tahol Di Kabupaten Malinau, Kalimantan Utara

2019 ◽  
Vol 13 (2) ◽  
pp. 9 ◽  
Author(s):  
DT Ardiansyah ◽  
Medi Hendra ◽  
Dwi Susanto
Keyword(s):  
Local Community ◽  
Diversity Index ◽  
Sampling Technique ◽  
Survey Method ◽  
Individual Species ◽  
Annual Plant ◽  
Plant Type ◽  
Community Based ◽  
Daily Lives ◽  
High Diversity

Forest has been considered as one of natural resources that could brought benefits for Dayak community based on their ecological and economical values. Edible fruits are annual plant type that could grow fruits and can be consumed. This study was held to obtain data, what type of plant that is utilized by Dayak Tahol community in their daily lives and how they utilize the edible fruits from Malinau district. This study was conducted by using explorative survey method, which is divided into two steps: first, the edible fruits inventory which is familiar by local people; second, observation at the local community and this method is supported by approach and sampling technique. This result showed that the total known edible fruits plant was about fifty two genus obtained from twenty five families and 2.207 individual species in total, moreover Shanoon-Winner diversity index (H’= 3.49) can be grouped in high diversity (H’ > 3).

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