scholarly journals Diversity and population dynamics of Odonata (Insecta: Odonata) in rice growing area of central Gujarat

2017 ◽  
Vol 30 (3) ◽  
pp. 149
Author(s):  
V. B. Rohmare ◽  
Darshana M. Rathod ◽  
B. M. Parasharya
Keyword(s):  
Population Dynamics ◽  
Community Structure ◽  
Relative Abundance ◽  
Paddy Field ◽  
Dominant Species ◽  
Diversity Index ◽  
Fish Farm ◽  
Paddy Fields ◽  
Point Count ◽  
Point Count Method

Odonates diversity was studied in Paddy field of central Gujarat during 2012 to 2015. Total 39 species belonging to 25 genera, under six families and two suborders were recorded. Total 17 species of Zygoptera (damselflies) and 22 species of Anisoptera (dragonflies) were recorded. Community structure and population dynamics of adult odonates were studied at Lingda village during July to December, 2012 through monitoring their population by point count method on three microhabitats (paddy field, village pond and fish farm). Total seventeen species were encounterd in the point count. Diversity index (H’) was highest (2.13) for paddy fields followed by fish farm (2.07) and village pond (1.99). Evenness value of the odonates also ranged between 0.7 and 0.8. Total four species (<em>Viz.</em> Ditch Jewel (25.0%), Green Marsh Hawk (17%), Ruddy Marsh Skimmer and Coromandal Marsh Dart (16% each) were dominant species in all three microhabitats. Both the suborders Anisoptera (dragonfly) and Zygoptera (damselfly) showed similar trend of population fluctuation during the study. Relative abundance was higher and remained constant during 4<sup>th</sup> week of September to 2<sup>nd</sup> week of October.

scholarly journals Characteristics of Benthos communities in Laoting area of Hebei Province

2020 ◽  
Vol 206 ◽  
pp. 02024
Author(s):  
Li Guanglou ◽  
Cao Hongmei ◽  
Ye wei
Keyword(s):  
Community Structure ◽  
Benthic Community ◽  
Dominant Species ◽  
Diversity Index ◽  
Hebei Province ◽  
Benthic Community Structure ◽  
Number Of Species ◽  
Evenness Index ◽  
Sea Area ◽  
Richness Index

According to a survey of benthos in the Laoting sea area of Hebei Province on May 24th 2019, a total of 40 benthos species were obtained, of which mollusks have the largest number, followed by annelids and arthropods. The dominant species are Sternaspis sculata and Ringicula doliaris. The number of species obtained in this survey is much lower than the historical average. The diversity index is significantly lower than that in the April 2008 survey, and the evenness index and richness index have declined slightly, indicating that the benthic community structure in this sea area tends to be simplistic, stability tends to deteriorate.

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 Refugia Refugia effect on arthropods in an organic paddy field in Malang District, East Java, Indonesia

2020 ◽  
Vol 21 (4) ◽  
Author(s):  
Zainal Abidin Suyono ◽  
AMIN SETYO LEKSONO ◽  
BAGYO YANUWIADI ◽  
MANGKU PURNOMO
Keyword(s):  
Community Structure ◽  
Statistical Analysis ◽  
Paddy Field ◽  
Paddy Fields ◽  
Wild Plants ◽  
Vegetative Phase ◽  
Taxa Richness ◽  
The Difference ◽  
Generative Phase ◽  
Predatory Arthropods

Abstract. Abidin Z, Leksono AS, Yanuwiadi B, Purnomo M. 2020. Refugia effect toward arthropods in an organic paddy field in Malang District, East Java, Indonesia. Biodiversitas 21: 1415-1421. This study aims to determine the abundance, community structure, and diversity of arthropod visitors of refugia in organic paddy fields in the Malang District of East Java, Indonesia. This research was conducted in 2019 from February to June and covered the stages from planting to harvest. The paddy fields were divided into 12 plots consisting of six refugia plots and six control plots. Sampling was carried out in two five-day phases, specifically in the vegetative phase (February) and the generative phase (June) of paddy plants. The results showed that 28.184 species consisting of nine orders and 40 families were observed. The abundance of common predator families, such as the Aleyrodidae, Formicidae, Libellulidae, and Tetragnatidae, in organic paddy. The average arthropod taxa richness in the refugia was 20.59 ± 12.24 species, while in the control it was 13.16 ± 8.95 species. Statistical analysis showed that the difference was significant (p < 0.05). The average arthropod diversity in the refugia was 2.39 ± 0.78 species, while in control was 2.35 ± 0.15 species. In conclusion, the population of arthropods was the highest in the refugia. Therefore, organic paddy surrounded by refugia with wild plants was the most appropriate habitat and niche for predatory arthropods.

scholarly journals Keanekaragaman Jenis Burung Di Lahan Basah Way Pegadungan Desa Rajawali Kecamatan Bandar Surabaya Kabupaten Lampung Tengah

2015 ◽  
Vol 3 (1) ◽  
pp. 71
Author(s):  
Badia Roy Ricardo Nababan ◽  
Agus Setiawan ◽  
Nuning Nurcahyani
Keyword(s):  
Diversity Index ◽  
Bird Species ◽  
Similarity Index ◽  
Stable Condition ◽  
Point Count ◽  
Key Words Birds ◽  
Natural Wetlands ◽  
Line Transects ◽  
Point Count Method ◽  
Riparian Communities

ABSTRACT Way Pegadungan wetlands is a wetland closure difference between the two riparian communities. One of the wetlands is converted into paddies fields, while the other is a natural wetland which are still overgrown with trees. To determine diversity differences in bird species between two wetlands research communities, the point count method (IPA) and line transects were used. Observations made by the stationary point count and record the birds found. Each community was taken 6 points count and observed for 3 days. Research encountered 41 species of birds included in the 17 families with a total of 796 individual in paddies fields and 46 birds species with total of 655 individuals from 17 families of individuals in natural wetlands. Natural wetlands diversity index was 3.44 with equality index of 0.90, this value is higher than the wetlands changed into paddies fields with a diversity index of 2.91, and in a stable condition with equality index of 0.78. Both wetlands communities have the same identical species approach (IS = 1) with a similarity index of 0.73. Key words: birds, diversity, wetlands, Way Pegadungan 

scholarly journals KEANEKARAGAMAN AVIFAUNA DIURNAL PADA KAWASAN MEMPAWAH MANGROVE PARK DAN SEKITARNYA DI DESA PASIR KABUPATEN MEMPAWAH

2019 ◽  
Vol 7 (1) ◽  
Author(s):  
Apik Prabowo ◽  
Iswan Dewantara ◽  
Hari Prayogo
Keyword(s):  
Research Method ◽  
Rice Field ◽  
Diversity Index ◽  
Similarity Index ◽  
Habitat Diversity ◽  
Mangrove Habitat ◽  
Dominance Index ◽  
Point Count ◽  
Point Count Method

Avifauna is one of the animals that is easily found in various places, and is one indicator of environmental quality. Avifauna has the ability to spread seeds, help pollinate, natural predators of other animals, and others. This study aims to record the diversity of diurnal avifauna in area Mempawah Mangrove Park and its surroundings in Pasir Village Mempawah Hilir Subdistrict, Mempawah district. The research method used the Point count method, whose observation points are obtained by Purposive sampling, carried out on 9 July-9 August 2018. The results of observations were 35 species of avifauna consisting of 24 families which were divided into three habitats, in the mangrove habitat there were 18 species and 15 families, mixed garden contained 22 species and 18 families, and rice field contained 17 species and 11 families. The dominance index in the mangrove habitat is C = 0.40, mixed garden is C = 0.10 and rice is C = 0.13, indicates that no species dominates the other species, meaning the role of the avifauna species found in all three same habitat. Diversity index shows that mixed garden habitat has a higher species diversity with () = 2.66, mangrove habitat is () = 2.43 and a rice field habitat is () = 2.40, indicates that the three habitats have diversity with moderately criteria. Evenness index in mangrove habitat is (E) = 0.84, in mixed garden habitat is (E) = 0.85 and a rice field habitat is (E) = 0.85, indicates the three habitats the abundance includes evenly distributed or included in a stable community. The highest similarity index of avifauna species is between mangrove habitat and mixed garden with a percentage of 53.58%, rice field habitat with a garden with a percentage of 53.19%, and mangrove habitat with rice fields with a percentage of 38.49%. The highest similarity was between.Keywords: Avifauna, Diversity, Mempawah Mangrove Park

scholarly journals Richness of Butterflies Species at Three Habitat Type in Karimunjawa Island Central Java

2017 ◽  
Vol 2 (2) ◽  
pp. 171
Author(s):  
Wisnu Bayu Murti ◽  
Nugroho Edi Kartijono ◽  
Margareta Rahayuningsih
Keyword(s):  
Species Richness ◽  
Tropical Forest ◽  
Habitat Type ◽  
Paddy Fields ◽  
Butterfly Species ◽  
Habitat Types ◽  
Lowland Tropical Forest ◽  
Point Count ◽  
Central Java ◽  
Point Count Method

<p style="text-align: justify;">The purpose of this research was to determine the species richness of butterflies on three type habitats in Karimunjawa Island. The research was conducted in May-October 2016. The research location on the island of Karimunjawa in three habitat types, edge of lowland tropical forest, paddy fields and settlements. Sampling was conducted four times of observation on each habitat type and Point Count Method. Identification species of butterflies use a guidebook Serangga Taman Nasional Gunung Halimun Jawa Bagian Barat and analyzed by uses Margalef Index. The results showed total 49 species of butterflies from 1402 individual (5 Family) was found in three types of habitat. Butterfly species richness highest in a edge habitat of lowland tropical forest (5.9), settlements (5.2), and paddy fields (4.6). ©2016 JNSMR UIN Walisongo. All rights reserved.</p>

scholarly journals Seasonal Population Fluctuations in Some Non-Passeriformes at Marala Head, Pakistan

2020 ◽  
Vol 7 (1) ◽  
pp. 53-56
Author(s):  
Zahid Bhatti ◽  
Asad Ghufran ◽  
Fakhra Nazir
Keyword(s):  
Relative Abundance ◽  
Population Fluctuations ◽  
Point Count ◽  
Passerine Species ◽  
Count Method ◽  
Different Seasons ◽  
Population Sizes ◽  
Point Count Method ◽  
Seasonal Population

Point count method was used to determine the relative abundance of non-passerine species at Marala wetlands (District Sialkot, Pakistan) during different calendar months between October, 2000 and September, 2001. Six species (Hoopoe, Lapwing, Spotted Owlet, Osprey, Indian Roller and Indian Nightjar) were recorded. Osprey and Spotted Owlet appearing in smaller numbers and Red Wattled Lapwing as a dominant resident. All the species were resident with some variation in population sizes during different seasons, though Osprey was a winter visitor.

scholarly journals Keanekaragaman Jenis Burung Di Hutan Pinus Dan Hutan Campuran Muarasipongi Kabupaten Mandailing Natal Sumatera Utara

2014 ◽  
Vol 2 (2) ◽  
pp. 89
Author(s):  
Muhammad Rohiyan ◽  
Samsul Bakri ◽  
Susni Herwanti
Keyword(s):  
Species Diversity ◽  
Diversity Index ◽  
Mixed Forest ◽  
Bird Species ◽  
Similarity Index ◽  
Community Similarity ◽  
Mixed Forests ◽  
Point Count ◽  
Point Count Method ◽  
Bird Species Diversity

Muarasipongi  pine and mixed forests contribute greatly to the biodiversity wildlife.  The study of bird species diversity in pine and mixed forests Muarasipongi, to support the preservation and protection efforts on biodiversity especially bird species. This research was conducted on August 2013 by the point count method on Muarasipongi pine and mixed forest then mark and record all the birds over a predetermined period of time before moving to the next point.  The data obtained were analyzed and then used to calculate the index of species diversity equality, and community similarity were determined.  Observations were made during six repetitions. There are 19 species pine forest, 24 species in the mixed forest and 5 types of birds found in both forest.  Total birds found in Muarasipongi 38 species of 20 families.  Diversity  index (H ') (3.358).  The equality index is 0.923, and has a (IS) or Similarity index is worth 0.277 which means that the similarity between the two species is different habitats.

scholarly journals Struktur Komunitas Collembola pada Tiga Tipe Habitat Sepanjang Daerah Aliran Sungai Brantas Hulu Kota Batu

2016 ◽  
Vol 8 (2) ◽  
pp. 45
Author(s):  
HUSAMAH HUSAMAH ◽  
FATCHUR ROHMAN ◽  
HEDI SUTOMO
Keyword(s):  
Community Structure ◽  
Relative Abundance ◽  
Diversity Index ◽  
Soil Sampling ◽  
Species Diversity Index ◽  
Descriptive Research ◽  
Study Results ◽  
Evenness Index ◽  
Low Diversity ◽  
Biology Laboratory

<p class="5abstrak">Collembola is one of a group of animals that generally live in the soil. Collembola has an important role in the ecosystem due to its function as a subsystem of consumer and decomposition that can be used as bio-indicators. Changing in habitat in the upstream of Brantas River Basin is cause disruption for Collembola community. This is a descriptive research, aims to uncover the information of community structure, including the type found, diversity, evenness, and relative abundance of Collembola in three type habitats (forest, agricultural, and residential). Soil sampling conducted in each type of habitat using TBSF methods. Identification of Collembola samples conducted at the Biology Laboratory of University of Muhammadiyah Malang and verified at Basic Entomology Laboratory, Gadjah Mada University. This study results are; (1) the number of Collembola were found in forest were 21, agriculture were 5, and residential were 17. (2) There is difference in descriptive diversity of Collembola in forest, agricultural, and residential. Collembola species diversity index of forest higher (2.78) compared to agriculture (1.16) and residential (2.42). Forest and residential habitat have moderate diversity, while agriculture has a low diversity. (3) There is difference in descriptive evenness of Collembola in forest, agricultural, and residential. Evenness index Collembola in forest was higher (0.91) than agriculture (0.72) and residential (0.85). Evenness of Collembola in residential is higher than agriculture. All types of habitat, including having a high evenness. (4) There are differences in the relative abundance of descriptive Collembola in forest, agricultural, and residential. Relative abundance of forest, agricultural, and residential varied. The highest relative abundance in forest is <em>Hypogastrura consanguinea, Ascocyrtus</em> sp, and <em>Homidia cingula</em>. The highest relative abundance in agriculture is <em>Pseudachorutes javanicus, Isotomurus palustris,</em> and <em>Ascocyrtus</em> sp. The highest relative abundance in residential is <em>Ascocyrtus sp., Cryptopygus thermophilus</em>, and <em>Isotomuru</em>s <em>palustris.</em></p>

scholarly journals Struktur Komunitas Semut (Hymenoptera : Formicidae) di Lahan Pertanian Organik dan Anorganik Desa Batur, Kecamatan Getasan, Kabupaten Semarang

2018 ◽  
Vol 19 (2) ◽  
pp. 170
Author(s):  
Ivan Mahadika Putra ◽  
Mochamad Hadi ◽  
Rully Rahadian
Keyword(s):  
Community Structure ◽  
Species Diversity ◽  
Dominant Species ◽  
Diversity Index ◽  
Abiotic Factors ◽  
Similarity Index ◽  
Terrestrial Ecosystems ◽  
Species Diversity Index ◽  
Ant Communities ◽  
Organic Farm

Ants play an important role in terrestrial ecosystems, including in organic and inorganic farmland, as predators, scavengers, and their interaction with other organism. The objectives of this study were to compare the community structure and the role of the ant in organic and inorganic farmland, and also to determine soil abiotic factors in both farmland. The study was conducted in organic and inorganic chili crop land at Batur village, Getasan, Semarang. The sampling of ants was performed using pitfall traps and bait traps, and then the ants were identified. Data analysis used is an abundance index, diversity index, evenness index, Hutchinson test and similarity index. The results showed that the number of species and the number of individual of ants in organic farm were higher (45 individuals, 8 species) than inorganic farm (35 individuals, 6 species). Diversity index of ant species in both farmlands were categorized moderate with the index value of 1.92 and 1.42. Statistically, there were no significant differences in species diversity of ants in organic and inorganic farmland. There were five dominant species in organic field and three dominant species in inorganic field. Ants that predominate in both farmlands were Iridomyrmexsp, Tetramorium sp, Solenopsisgeminata, Odontoponeradenticulata and Diacammasp. The similarity of ant communities between organic and inorganic farmland showed high value of similarity index (IS) which was 85.7%. Statistically, abiotic factors showed that there were significantly different of some abiotic factors in both farmlands, the content of carbon, phospor, organic matter and c / n ratio. Keywords: community structure of ants, agricultural ecosystems

Sign in / Sign up

Export Citation Format

Share Document