scholarly journals Short Communication: Community structure and diversity of Odonata in Suranadi Natural Park, West Lombok Indonesia

2020 ◽  
Vol 21 (2) ◽  
Author(s):  
MOHAMMAD LIWA ILHAMDI ◽  
AGIL AL IDRUS ◽  
DIDIK SANTOSO ◽  
Gito Hadiprayitno
Keyword(s):  
Community Structure ◽  
Data Collection ◽  
Short Communication ◽  
Environmental Changes ◽  
Diversity Index ◽  
Scientific Information ◽  
Ecosystem Change ◽  
Survey Method ◽  
Transect Line ◽  
Natural Park

Abstract. Ilhamdi ML, Al Idrus A, Santoso D, Hadiprayitno G. 2020. Short Communication: Community structure and diversity of Odonata in Suranadi Natural Park, West Lombok Indonesia. Biodiversitas 21: 718-723. Odonata is an order of insects. The life cycle of this order is dependent on freshwater habitat. Sensitivity to environmental changes causes odonates to be important bioindicators of ecosystem change. The importance of the ecological role of odonates is not followed by adequate scientific information on Odonata communities, especially in the Suranadi Natural Park (SNP). The study aimed to monitor the existence and community structure of Odonata in the SNP area every six months in period. The data collection technique was using a survey method by following the transect line, namely the waterway transect line (WTL), plantation border transect (PT) and settlement border transect (ST). Data collection was done 4 times from April to May 2019, once every 2 weeks. The sampling was done twice in the morning from 08.00 to 11.00 AM and in the afternoon from 03.00 to 05.00 PM. Data were analyzed using the relative frequency equation and Diversity Index. The results showed that there were 16 species of odonates consisting of the family Libellulidae (11 species), Platycnemididae (1 species), Chlorocyphidae (1 species), and Coegrinidae (3 species). Orthetrum sabina, Neurothemis ramburii, Diplacodes trivialis, Gynacantha subinterrupta, Copera marginipes, and Pantala flavescens, are species that are present in all of each observation sites. The waterway transect has the highest diversity index (2.027), followed by settlement transect (1.367), and the lowest is plantation transect (1.131).

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 Biotic Index of Dragonflies in The Suranadi Natural Park Area West Lombok

2020 ◽  
Vol 15 (4) ◽  
pp. 424
Author(s):  
Mohammad Liwa Ilhamdi ◽  
Agil Al Idrus ◽  
Didik Santoso
Keyword(s):  
Data Collection ◽  
Data Retrieval ◽  
Wide Distribution ◽  
Biotic Index ◽  
Survey Method ◽  
Exploratory Research ◽  
Natural Park ◽  
Nature Park ◽  
Park Area

The aims this researc to analyze the biotic index of dragonflies (Odonata) in the Suranadi Nature Park. This research is a descriptive exploratory research. The method used in data collection is the survey method on predetermined transect lines, namely the forest left, right, middle forest and river paths. Data retrieval is done 2 times in 1 month in the morning at 08.00-11.00 WIB and evening at 15.00 - 17.00 WIB. The results showed that the biotic index of dragonflies in Suranadi Nature Park showed that there were 3 species that had the greatest biotic index, namely Gynacantha subinterupta, Zyxomma obtusum and Libelago linearis. There are 13 species that have a biotic index of 0-2. The conclusion is that the dragonfly biotic index in Suranadi Nature Park is more in the 0-2 category, which means that dragonflies still have a wide distribution so they are very commonly found throughout the Suranadi Nature Park.

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 Struktur Komunitas Alga Perifiton Sungai dalam Gua Batu Asahan di Sumpur Kudus Kabupaten Sijunjung Sumatera Barat

2019 ◽  
Vol 7 (1) ◽  
pp. 27
Author(s):  
Izmiarti Izmiarti
Keyword(s):  
Community Structure ◽  
Dominant Species ◽  
Diversity Index ◽  
Similarity Index ◽  
Survey Method ◽  
Clean Water ◽  
Periphyton Community ◽  
West Sumatra ◽  
Number Of Individuals

The cave ecosystem has a unique environment because it receives minimal sunlight and does not even get sunlight at all. Dark conditions in the cave will affect producers such as periphyton algae that live in rivers in caves that need sunlight for photosynthesis. This study aims to determine the periphyton community structure in the river in the Batu Asahan Cave in Sumpur Kudus, Sijunjung District, West Sumatra. This research held in August 2016. The research was carried out by survey method at 3 stations: bright, dim and dark zones. The results showed that periphyton were found as many as 22 species classified as Bacillariophycea 13 species, Cyanophyceae 5 species, Chlorophyceae and Euglenophyceae each of 2 species. Based on the number of individuals Bascillariophyceae 67.0%, Cyanophyceae 24.49%, Chlorophyceae 4.79% and Euglenophyceae 3.72%. Population density in each zone was low, ranges from 1.26 - 2.82 ind / cm2. The dominant species vary in each zone which is the highest shown by Synedra ulna (Bacillariophyceae) and Oscillatoria tenuis (Cyanophyceae). Diversity index ranging from 2.11-2.47 is not significantly different between zones, indicating the quality of clean water. The equitability index was high (E = 0.88-0.96) show the populations in the community evenly. Similarity index between zones was low (C = 25 - 56%). Fisicochemical factors of water indicate the quality of clean water supports the life of periphyton algae in the river.

scholarly journals Short Communication: Silba adipata (Diptera: Lonchaeidae) parasitoids on cayenne pepper (Capsicum frutescens) in Bali, Indonesia

2021 ◽  
Vol 22 (9) ◽  
Author(s):  
Ketut Ayu Yuliadhi ◽  
I WAYAN SUPARTHA ◽  
NI NENGAH DARMIATI ◽  
ALPREDO BANGUN ◽  
I KADEK WISMA YUDHA ◽  
...  
Keyword(s):  
Community Structure ◽  
Sampling Method ◽  
Short Communication ◽  
Diversity Index ◽  
Capsicum Frutescens ◽  
Parasitoid Species ◽  
Parasitization Rate ◽  
Diachasmimorpha Longicaudata ◽  
Low Diversity ◽  
Location Point

Abstract. Yuliadhi KA, Supartha IW, Darmiati NN, Bangun A, Yudha IKW, Utama IWEK, Wiradana PA. 2021. Silba adipata (Diptera: Lonchaeidae) parasitoids on cayenne pepper (Capsicum frutescens) in Bali, Indonesia. Biodiversitas 22: 3929-3935. The black fig fly (Silba adipata) is newly emerging pests that attack cayenne pepper (Capsicum frutescens L.) plants in Bali Province, Indonesia. This study aimed to determine the parasitoid type, community structure, distribution, and parasitization rate of the parasitoids of S. adipata on cayenne pepper in Bali. The sampling method employed in this study involves purposive sampling techniques on 100-150 pieces of cayenne pepper infested with S. adipata at each location point, with the emerging parasitoids identified morphologically. Three types of parasitoid species were associated with S. adipata, which include Asobara japonica Belokobylskij, Fopius arisanus (Sonan), and Diachasmimorpha longicaudata (Ashmead). The parasitoid community structure associated with S. adipata had a low abundance index, low diversity index, and a moderate dominance index. Based on the distribution of the three parasitoids, D. longicaudata is distributed evenly in Bali, whereas F. arisanus was not found in Jembrana . Conversely, A. japonica was only found in Badung, Bangli, Gianyar, and Klungkung. As summary, D. laungicaudata had the highest parasitization rate compared to the F. arisanus and A. japonica. D. longicaudata is a potential parasitoid, which can be studied for the future biological control of S. adipata.

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 STRUKTUR KOMUNITAS DAN ZONASI VEGETASI MANGROVE DESA DARUNU KECAMATAN WORI KABUPATEN MINAHASA UTARA

2021 ◽  
Vol 9 (1) ◽  
pp. 65
Author(s):  
Udin Upara ◽  
Janny Dirk Kusen ◽  
Calvyn F.A. Sondak ◽  
Joshian N.W Schaduw ◽  
Sandra Olivia Tilaar ◽  
...  
Keyword(s):  
Community Structure ◽  
Diversity Index ◽  
Coastal Region ◽  
Data Retrieval ◽  
Mangrove Ecosystem ◽  
Bruguiera Gymnorrhiza ◽  
Species Frequency ◽  
Transect Line ◽  
Rhizophora Apiculata ◽  
Mangrove Zonation

Mangrove ecosystem is a collection of distinctive plant types that contained in tropical and subtropical coastal region. The purpose of research was to find out the community structure and mangrove zonation at Darunu Village, Wori District, North Minahasa Regency. The research was conducted by   the quadrant transect line method. It was done by pulling a straight line, perpendicular from the outermost mangrove area to the land direction, along 100 m by determining three data retrieval Station. To determine the condition of mangrove then density, species frequency, species coverage, important value index, diversity index and equality types were analyzed. The result found 5 mangroves species, namely: Rhizophora apiculata, R. mucronata, Sonneratia alba, Bruguiera gymnorrhiza and Avicennia officinalis. The highest density value was R.apiculata, as well as species frequency, while the species coverage value  found in S. alba. The diversity value found at Station 2. The zonation of mangrove vegetation in Darunu village respectively, at Station 1 and 2 in the front was overgrown by R.apiculata species with sandy mud substrate.  The Station 3 was overgrown by S.alba species with sandy mud. Generalyl, this location substrate contains of sandy mud and mud.Keywords : Mangrove, community structure, zonation.

scholarly journals STRUKTUR KOMUNITAS GASTROPODA DI SUNGAI DIGOEL DISTRIK EDERA KABUPATEN MAPPI

2019 ◽  
pp. 64-73
Author(s):  
Nova S. Monika ◽  
Sendy Lely Merly ◽  
FX Kakumun
Keyword(s):  
Community Structure ◽  
Diversity Index ◽  
Total Sample ◽  
Survey Method ◽  
Dominance Index ◽  
Several Variables ◽  
Community Population ◽  
Ellobium Chinense ◽  
The One ◽  
Index Value

Edera District is the one of separated districts of six districts in the Mappi Regency. The increasing of community population has caused an increase  activities in resource utilization, especially in the Digoel River area. As a result of excessive utilization activities can potentially cause pollution that threatens the existence and continuity of organisms such as Gastropods. This study aims to determine the community structure of Gastropods in the Digoel River in Edera District, Mappi Regency. The study lasted for 3 months from January to March 2018 by using the survey method and reviewing several variables including: diversity index, uniformity index and dominance index. The results showed that at the 3 observation stations the total sample was 1233 individuals. The highest diversity index value was at station II, namely itlic. and lowest was at station I Ellobium chinense species. Uniformity index shows that the number of uniformity is not evenly distributed in all three stations due to the occurrence of certain types of dominance.   Keywords: Gastropoda; Community Structure;  Digoel River; Mappi Regeucy Regeucy    

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 Short Communication: Diversity and community structure of trees in two forest types in Mt. Apo Natural Park (MANP), Philippines

2019 ◽  
Vol 20 (7) ◽  
Author(s):  
FLORENCE ROY P SALVAÑA ◽  
CHRISTIE KAYE C LOPEZ ◽  
CHERIE C MANGAOANG ◽  
BRYAN LLOYD P BRETAÑA
Keyword(s):  
Community Structure ◽  
Tree Species ◽  
Short Communication ◽  
The Philippines ◽  
Forest Types ◽  
Tropical Lowland ◽  
Natural Park ◽  
Large Trees ◽  
Ecological Unit ◽  
Montane Rainforest

Abstract. Salvaña FRP, Lopez CKC, Mangaoang CC, Bretaña BLP. 2019. Short Communication: Diversity and community structure of trees in two forest types in Mt. Apo Natural Park (MANP), Philippines. Biodiversitas 20: 1794-1801. A forest ecosystem is the basic ecological unit that exists as a habitat for a community of both native and introduced organisms. It is the limited number of reliable information on the diversity and community structure of tree species in one of the Philippines’ protected landscape, Mt. Apo Natural Park (MANP), that initiates this study. The present study was carried out to determine species diversity and community structure including seedlings, saplings and large trees of two forest types, namely tropical lowland evergreen rainforest and tropical lower montane rainforest. Two one-kilometer transects were established in each forest types. Each transect was divided into five sampling points. A total of 67 tree species belonging to 29 families were identified from both forest types. Species richness was higher in tropical lowland evergreen rainforest compared to tropical lower montane rainforest. Relative abundance showed that among the identified families, Dipterocarpaceae and Moraceae have the highest abundance which is mostly present in the two forest types. This was followed by Meliaceae and Myrtaceae. The two forest types were satisfactory at community level having large number of seedlings compared to saplings and trees. Based on this, the two forest types, dominated by seedlings, are actively regenerating.

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