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 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 Effects of Plastic Debris on the Biofilm Bacterial Communities in Lake Water

Water ◽  
2021 ◽  
Vol 13 (11) ◽  
pp. 1465
Author(s):  
Chao Shen ◽  
Liuyan Huang ◽  
Guangwu Xie ◽  
Yulai Wang ◽  
Zongkai Ma ◽  
...  
Keyword(s):  
Community Structure ◽  
Bacterial Community ◽  
Bacterial Communities ◽  
Bacterial Community Structure ◽  
Diversity Index ◽  
Plastic Substrate ◽  
Simpson Index ◽  
Plastic Debris ◽  
Plastic Substrates ◽  
Wiener Diversity Index

Increasing discharge of plastic debris into aquatic ecosystems and the worsening ecological risks have received growing attention. Once released, plastic debris could serve as a new substrate for microbes in waters. The complex relationship between plastics and biofilms has aroused great interest. To confirm the hypothesis that the presence of plastic in water affects the composition of biofilm in natural state, in situ biofilm culture experiments were conducted in a lake for 40 days. The diversity of biofilm attached on natural (cobble stones (CS) and wood) and plastic substrates (Polyethylene terephthalate (PET) and Polymethyl methacrylate (PMMA)) were compared, and the community structure and composition were also analyzed. Results from high-throughput sequencing of 16S rRNA showed that the diversity and species richness of biofilm bacterial communities on natural substrate (observed species of 1353~1945, Simpson index of 0.977~0.989 and Shannon–Wiener diversity index of 7.42~8.60) were much higher than those on plastic substrates (observed species of 900~1146, Simpson index of 0.914~0.975 and Shannon–Wiener diversity index of 5.47~6.99). The NMDS analyses were used to confirm the taxonomic significance between different samples, and Anosim (p = 0.001, R = 0.892) and Adonis (p = 0.001, R = 808, F = 11.19) demonstrated that this classification was statistically rigorous. Different dominant bacterial communities were found on plastic and natural substrates. Alphaproteobacterial, Betaproteobacteria and Synechococcophycideae dominated on the plastic substrate, while Gammaproteobacteria, Phycisphaerae and Planctomycetia played the main role on the natural substrates. The bacterial community structure of the two substrates also showed significant difference which is consistent with previous studies using other polymer types. Our results shed light on the fact that plastic debris can serve as a new habitat for biofilm colonization, unlike natural substrates, pathogens and plastic-degrading microorganisms selectively attached to plastic substrates, which affected the bacterial community structure and composition in aquatic environment. This study provided a new insight into understanding the potential impacts of plastics serving as a new habitat for microbial communities in freshwater environments. Future research should focus on the potential impacts of plastic-attached biofilms in various aquatic environments and the whole life cycle of plastics (i.e., from plastic fragments to microplastics) and also microbial flock characteristics using microbial plastics in the natural environment should also be addressed.

scholarly journals Effects of Ecological Restoration Using Non-Native Mangrove Kandelia obovata to Replace Invasive Spartina alterniflora on Intertidal Macrobenthos Community in Maoyan Island (Zhejiang, China)

2021 ◽  
Vol 9 (8) ◽  
pp. 788
Author(s):  
Qiuxuan Wang ◽  
Carlos Duarte ◽  
Li Song ◽  
George Christakos ◽  
Susana Agusti ◽  
...  
Keyword(s):  
Community Structure ◽  
Ecological Restoration ◽  
Spartina Alterniflora ◽  
Diversity Index ◽  
Invasion History ◽  
Kandelia Obovata ◽  
Wiener Diversity Index ◽  
Significant Difference ◽  
Spatial Differences ◽  
Average Biomass

Spartina alterniflora has extensively invaded the coastline of China, including in Maoyan Island of Zhejiang Province. Ecological restoration has been conducted using non-native mangrove Kandelia obovata to replace S. alterniflora in an attempt to restore the impacted intertidal zones. To illustrate the ecological effectiveness of the restoration projects, macrobenthos communities were studied among different habitats within the restored areas, including one non-restored S. alterniflora marsh (SA) and three differently-aged restored K. obovata stands planted in 2003, 2009, and 2011 respectively (KF14, KF8, and KF6). Besides, one unvegetated mudflat (MF) adjacent to the non-restored S. alterniflora marsh and one K. obovata forest transplanted in 2006 (RKF) at a previously barren mudflat without invasion history of S. alterniflora were set as reference sites. A total of 69 species of macrobenthos were collected from Maoyan Island, and the species richness was dominated by gastropoda (23 species), polychaeta (18 species), and malacostraca (16 species). There was no significant difference between the six sites in terms of the abundance of macrobenthos, with the average values of abundance peaking in KF6 (734.7 ind m−2) and being lowest in RKF (341.3 ind m−2). The six sites had significant differences in terms of the biomass of macrobenthos. The KF8 site contained the highest average biomass (168.3 g m−2), whereas the MF site had the lowest (54.3 g m−2). The Shannon-Wiener diversity index and Pielou’s evenness index of the macrobenthos did not exhibit significant differences among the six sites. However, the results of permutational multivariate analysis of variance (PERMANOVA) revealed significant spatial differences in the macrobenthos community structure between the sites. Since KF14 shared a similar macrobenthos community structure with RKF, while representing a strikingly different structure from SA, we infer that ecological restoration using K. obovata can restore the macrobenthos community to resemble to a normally planted K. obovata forest about 15 years after restoration.

scholarly journals Effect of exotic tree plantation on floristic composition and phytodiversity of Rema-Kalenga wildlife sanctuary, Bangladesh

2016 ◽  
Vol 3 (2) ◽  
pp. 33-47
Author(s):  
Gazi Mosharof Hossain ◽  
ABM Enayet Hossain
Keyword(s):  
Plant Species ◽  
Negative Impact ◽  
Diversity Index ◽  
Vascular Plant ◽  
Floristic Composition ◽  
Natural Forest ◽  
Wildlife Sanctuary ◽  
Tree Plantation ◽  
Exotic Tree ◽  
Index Value

Effect of exotic tree plantation on floristic composition and phytodiversity status of Rema-Kalenga wildlife sanctuary of Bangladesh was studied. A total of 309 vascular plant species under 245 genera belonging to 83 families were found to constitute the vascular flora of the studied area. The maximum number of species (298) with the highest Shannon-Weiner diversity index value (3.882±0.090) was recorded from natural forest, which was followed by 194 and 165 plant species with 3.441±0.205 and 3.398±0.103 diversity index values recorded from Tectona and Acacia plantation sites respectively. The minimum number of plant species (142) with the lowest diversity index value (2.999±0.152) was recorded from Eucalyptus plantation site. The collected data on the selected forest sites of Rema-Kalenga wildlife sanctuary showed the trends of gradual decrease in floristic composition and phytodivesity status of three plantation sites (Tectona to Acacia to Eucalyptus) in respect to natural forest, which indicated that exotic tree plantations might have negative impact on floristic composition and phytodiversity of this semi-tropical forest area and the fast-growing exotic tree plantation of Acacia and Eucalyptus should be avoided for sustainable development of Rema-Kalenga wildlife sanctuary.Jahangirnagar University J. Biol. Sci. 3(2): 33-47, 2014 (December)

scholarly journals Struktur Komunitas Fitoplankton di Perairan Pesisir Pulau Siantan Kabupaten Kepulauan Anambas Provinsi Kepulauan Riau

2016 ◽  
Vol 1 (1) ◽  
Author(s):  
Lani Puspita ◽  
Notowinarto Notowinarto ◽  
Rudi Gunawan
Keyword(s):  
Community Structure ◽  
Coastal Area ◽  
Diversity Index ◽  
Natural Food ◽  
Species Dominance ◽  
Sampling Locations ◽  
Level Data ◽  
Dominance Level ◽  
Index Value ◽  
Sampling Times

Phytoplankton as a producers  and natural food for fish have an important role in aquatic ecosystems, thus indirectly affecting the availability of fish catches. The research was conducted at Siantan Island Coastal Area Anambas Islands District Riau Islands Province. This coastal area is one of the fishing grounds in Anambas Island. This study aims to analyze the community structure of phytoplankton at Siantan Island Coastal Area Anambas Islands District Riau Islands Province. Sampling was conducted during March and April 2012. Community structure parameters analyzed include Species Diversity Level, Species Uniformity Level, and Species Dominance Level. Data were analyzed spatially and temporally. Similarity between the sampling locations was conduted by Multivariate Analysis - Cluster. Results of data analysis showed that the phytoplankton of Bacillariophyceae Class found in the most abundant amount. Diversity Index Value indicates that the level of phytoplankton plankton community in a state of moderate. Species Uniformity Index Value and Species Dominance Index Value indicates that phytoplankton in the three sampling locations are generally in a state of uniform and no one dominates. All three sampling locations have relatively the same condition and between sampling times (morning, afternoon, and evening) are also not very different condition. Keywords: phytoplankton, coastal, Anambas Islands  

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.

Characteristics of Phytoplankton Community Structure and Evaluation of Trophic State of Water Body in Bosten Lake

2013 ◽  
Vol 864-867 ◽  
pp. 422-427 ◽  
Author(s):  
Xing Mu ◽  
Fang Wang ◽  
He Ying Sun ◽  
Li Min Chu ◽  
Jia Li Wang
Keyword(s):  
Community Structure ◽  
Water Body ◽  
Trophic State ◽  
Diversity Index ◽  
Bosten Lake ◽  
Wiener Diversity Index ◽  
State Of Water ◽  
Synedra Acus ◽  
The Mean ◽  
Richness Index

Bosten Lake was the largest inland freshwater lake in China. It is facing with a series of ecological problems nowadays. The phytoplankton and water samples of seventeen sampling sites in Bosten Lake were collected in September 2012. Results show that sixty-four species (genera) of phytoplankton, which belong to six phyla, are identified. The community structure of phytoplankton is dominated by Chlorophyta. The mean cell density of phytoplankton in whole lake is 8179.01×104cells·L-1 and Cyanophyta accounts for 94.71%. The dominant species are Chroococcus sp. and Synedra acus. In terms of Shannon-Wiener diversity index, Margalef richness index, Pielou evenness index and total nitrogen content, it is ascertained that trophic state of water body in Estuary and Pumping Station is between mesotrophication and eutrophication. While in the other districts, the water body is eutrophic. In addition, the eutrophic degree of water body in District IV is higher.

scholarly journals Diversity of Wild Bees along Elevational Gradient in an Agricultural Area in Central Java, Indonesia

2017 ◽  
Vol 2017 ◽  
pp. 1-5 ◽  
Author(s):  
Imam Widhiono ◽  
Eming Sudiana ◽  
Darsono Darsono
Keyword(s):  
Species Diversity ◽  
Diversity Index ◽  
Elevational Gradient ◽  
High Elevation ◽  
Agricultural Area ◽  
Wild Bees ◽  
Central Java ◽  
Wiener Diversity Index ◽  
Pollinator Community ◽  
Study Sites

Increases in mean temperature affect the diversity and abundance of wild bees in agricultural ecosystems. Pollinator community composition is expected to change along an elevational gradient due to differences in the daily ambient temperature. This study investigated the diversity and abundance of wild bees in an agricultural area along an elevational gradient in Central Java, Indonesia. Wild bees were collected using a sweep net in 40 green bean (Phaseolus vulgaris) cultivation sampling locations at seven different elevations (8, 108, 224, 424, 644, 893, and 1017 m above sea level). Species diversity was determined using the Shannon–Wiener diversity index. We identified 932 individuals from 8 species of wild bee belonging to 3 families. The family Apidae was predominant, with 6 species, while only 1 species was found from each of Megachilidae and Halictidae. Across the study sites, diversity increased with increasing elevation (H′= 1.4,D= 0.25, andE= 0.78 at low elevation toH′= 2.04,D= 0.13, andE= 0.96 at high elevation), and higher numbers of species were found at middle and high elevations. Species richness and abundance increased linearly with increasing elevation, and species diversity was highest at middle elevations.

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 HUBUNGAN KONSENTRASI MINYAK DAN FENOL DENGAN KELIMPAHAN FITOPLANKTON DI SUNGAI ASEM BINATUR, KOTA PEKALONGAN

2018 ◽  
Vol 6 (1) ◽  
pp. 95-102
Author(s):  
Mochammad Ardiansyah ◽  
Agung Suryanto ◽  
Haeruddin Haeruddin
Keyword(s):  
Phytoplankton Community ◽  
Diversity Index ◽  
Middle Part ◽  
Phenol Concentration ◽  
Phytoplankton Community Structure ◽  
Domestic Waste ◽  
Central Java ◽  
Trust Level ◽  
Oil Concentration ◽  
Index Value

ABSTRAKSungai Asem Binatur terletak di Kota Pekalongan, Jawa Tengah. Sungai ini selain menerima limbah domestik juga menjadi objek buangan limbah batik oleh para pelaku industri batik di daerahnya. Kandungan minyak dan fenol yang terdapat pada pembuatan batik ini mengalir menuju ke perairan sungai. Kandungan ini akan berdampak terhadap kelimpahan fitoplankton sebagai indikator kualitas perairan. Penelitian ini dilakukan pada bulan Juli – Agustus 2016 di Sungai Asem Binatur yang bertujuan untuk mengetahui konsentrasi minyak dan fenol, mengetahui kelimpahan dan struktur komunitas fitoplankton dan mengetahui hubungan antara minyak dan fenol dengan kelimpahan fitoplankton. Metode yang digunakan adalah metode survey. Teknik pengambilan sampel air di bagian tengah sungai selanjutnya dianalisis di laboratorium. Hasil penelitian menunjukkan konsentrasi minyak di lokasi penelitian berkisar antara 1,2 – 10,4 mg/l, sedangkan konsentrasi fenol berkisar antara 0,0005 – 1,167 mg/l. Kelimpahan fitoplankton berkisar antara 609 – 1649 ind/l, indeks keanekaragaman (H’) dengan nilai 1,894 – 2,484, indeks dominasi (d) diperoleh nilai 0,125 – 0,224, dan indeks keseragaman (e) dengan nilai 0,717 – 0,846. Tidak terdapat hubungan yang signifikan antara minyak dengan kelimpahan fitoplankton pada taraf kepercayaan 95% dengan nilai koefisien korelasi (r) sebesar 0,585 menunjukkan korelasi cukup. Sedangkan, terdapat hubungan yang signifikan antara fenol dengan kelimpahan fitoplankton dengan nilai korelasi (r) sebesar 0,861 menunjukkan korelasi kuat. Regresi linier berganda digunakan untuk membuktikan hubungan nyata antara minyak dan fenol dengan kelimpahan fitoplankton. Terdapat hubungan nyata dengan kelimpahan fitoplankton hanya pada konsentrasi fenol pada taraf kepercayaan 95% dengan nilai sig = 0,022, sedangkan konsentrasi minyak tidak terdapat hasil yang nyata sehingga dapat diabaikan dengan nilai sig = 0,809. Kata Kunci : Minyak; Fenol; Kelimpahan Fitoplankton; Limbah Batik; Sungai Asem Binatur. ABSTRACTAsem Binatur River is located in Pekalongan City, Central Java. Beside as an effluent of domestic waste, this river also an object to dump batik waste by batik industries nearby. Oil and phenol substance in these batik making flows into the river. These substance are going to cause an effect for the abundance of phytoplankton which is a water quality indicator. This research was done on July – August 2016 in Asem Binatur River and aimed to know oil and phenol substance, the abundance and phytoplankton community structure, also correlation of oil and phenol with the abundance of phytoplankton. Survey methode was used. Water sample which taken in the middle part of the river was analyzed. The result shown that oil concentration in the research location was around 1,2 – 10,4 mg/l, meanwhile phenol concentration was around 0,0005 – 1,167 mg/l. The abundance of phytoplankton was around 609 – 1649 ind/l, diversity index (H’) with 1,894 – 2,484 value, domination index value was 0,125 – 0,224, and uniformity index (e) with 0,717 – 0,846 value. There is no significant relation between oil and the abundance of phytoplankton at 95% trust level with correlation value (r) 0,585 which is an enough correlation. Meanwhile, there is a significant correlation between phenol and the abundance of phytoplankton with correlation value (r) 0,861 which is a strong correlation.  Double linier regretion was used to prove real correlation between phenol and oil with the abundance of phytoplankton. There is a real correlation with the abundance of phytoplankton but only in phenol concentration at 95% trust level with sig value = 0,022 while oil concentration did not have real result and could be ignored with sig value = 0,809.  Keywords: Oil; Phenol; The Abundance of Phytoplankton; Batik Waste; Asem Binatur River.                                                                                                                            

Sign in / Sign up

Export Citation Format

Share Document