KEANEKARAGAMAN JENIS GASTROPODA DI SUNGAI JANGKOK KOTA MATARAM SEBAGAI DASAR PENYUSUNAN PETUNJUK PRAKTIKUM EKOLOGI

2018 ◽  
Vol 6 (1) ◽  
pp. 80
Author(s):  
Robiyatul Ferisandi ◽  
Iwan Doddy Dharmawibawa ◽  
Safnowandi Safnowandi
Keyword(s):  
Species Diversity ◽  
Diversity Index ◽  
Test Theory ◽  
Pomacea Canaliculata ◽  
Exploratory Research ◽  
Development Research ◽  
Species Diversity Index ◽  
Descriptive Research ◽  
A Value ◽  
Low Diversity

Gastropoda included in the Mollusca phylum. Gastropoda are commonly found in watersheds. Jangkok River is a watershed that flows from the mountains of West Lombok Regency across Mataram City and interacts the most with human activities. This study aims to: 1) identify the type of Gastropoda found in the Jangkok River, Mataram City; and 2) developing research results on the diversity of Gastropod species in the Jangkok River in Mataram City as the basis for the Formulation of Ecology Practicum Guidelines. This type of research is exploratory descriptive research and development research. Descriptive research analyzes only to the level of description that is to analyze and present data systemically, so that it can be more easily understood and concluded, and exploratory research is a type of research that aims to find something new in the form of a grouping of symptoms, facts and certain diseases. While development research is an attempt to develop an effective product for use by schools and colleges, and not to test theory. Data collection techniques used for descriptive exploratory research are observation and documentation, while for development research are validation, legibility testing, and documentation. The data analysis technique was using species diversity index and percentage technique. The results showed that there were 51 Gastropod individuals consisting of 7 species that have been found including Potamopyrgus antipodarum, Mya arenaria, Ilyanasa aobsoleta, Pomacea canaliculata, Pomace ainsaluran, Poamarcobula amurensis, and Melanoides punctata. Species diversity at the upstream station has a very low diversity index with a value of 0, the middle station has a diversity index with a value of 0,91 indicating low diversity, and downstream stations have a diversity index with a value of 1,29 indicating moderate diversity. The average value of the validation test for practicum is 80,6%, and the readability test for students is 81%, with these results the practicum instructions that have been prepared are in the very valid category and do not need to be revised.

scholarly journals KEANEKARAGAMAN JENIS KUPU-KUPU (ORDO LEPIDOPTERA) PADA RUANG TERBUKA HIJAU KOTA PONTIANAK

2019 ◽  
Vol 7 (1) ◽  
Author(s):  
Wina Oktaviati ◽  
Slamet Rifanjani ◽  
Hafiz Ardian
Keyword(s):  
Species Diversity ◽  
Open Space ◽  
Environmental Changes ◽  
Diversity Index ◽  
Abiotic Factors ◽  
Butterfly Species ◽  
Species Diversity Index ◽  
West Kalimantan ◽  
A Value ◽  
Observation Method

Butterflies are one type of insect found in the green open space of Pontianak City. Butterflies can be used as bioindicators of environmental changes because butterflies are very sensitive to biotic and abiotic factors (Rizal, 2007). This study aims to obtain data and analyze the diversity of butterfly species in the green open space of Pontianak City. The study used a field observation method with sweeping net techniques and explored areas in three habitats namely Sylva Untan Arboretum, Untan S1 Forestry Campus and West Kalimantan Governor's Hall Pavilion. The three green open spaces were chosen based on the density and diversity of the vegetation. The results of the study found 22 types of butterflies. The same six types are found in three different types of open green space, namely Leptosia nina, Agamemnon Graphium, Papilio polytes, Hipolimnas bolina, Eurema hecabe, and Appias lybithea. The species diversity index at the Arboretum has a value of 2.74, Campus S1 Forestry Untan with a value of 2.19 and Pendopo Park with a value of 2.02. This value indicates that species diversity in green open space is classified as medium.Keywords: butterfly diversity, green open space, bioindicator

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 KEANEKARAGAMAN HERBACEUS DI HUTAN PENDIDIKAN DAN PELATIHAN UNIVERSITAS MUHAMMADIYAH BENGKULU KABUPATEN BENGKULU TENGAH

2020 ◽  
Vol 1 (2) ◽  
Author(s):  
Pariyanto Pariyanto
Keyword(s):  
Soil Moisture ◽  
Species Diversity ◽  
Diversity Index ◽  
Herbaceous Plants ◽  
Air Humidity ◽  
Species Diversity Index ◽  
Average Temperature ◽  
A Value ◽  
Forest Education ◽  
And Training

This study aims to determine the diversity of Herbaceous plants found in the forest Education and Training atMuhammadiyah University of Bengkulu, Central Bengkulu Regency. This research was conducted in January to February 2019 by using the coordinate points LS03040’10” BT 100232’55”. The method used in this study was a direct survey to the research location. The samplewas taken by exploring the research location. The identification of Herbaceous plants samples was did in the laboratory of Muhammadiyah University of Bengkulu. The data obtained was analyzed descriptively. The results of this study were found that it consist of 16 speciesfrom 9 families such as Th eAcanthaceae family, Amaranthaceae, Araceae, Astreaceae, Cleomaceae, Commelinaceae, Marantaceae, Musaceae, Zingiberaceae with a total of 1.052individuals.The species diversity index (H’) at all levels has a value of 1.483 which is a medium categorywith  ecological conditions namely an average temperature is 280C, 86%air humidity, 6.5 soil pH, and 25% soil moisture.

scholarly journals Carbon stocks of homestead forests have a mitigation potential to climate change in Bangladesh

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Tarit Kumar Baul ◽  
Tajkera Akhter Peuly ◽  
Rajasree Nandi ◽  
Lars Holger Schmidt ◽  
Shyamal Karmakar
Keyword(s):  
Species Diversity ◽  
Stand Structure ◽  
Diversity Index ◽  
Carbon Stocks ◽  
Small Scale ◽  
Species Diversity Index ◽  
C Stocks ◽  
Homestead Forests ◽  
C Stock ◽  
Low Altitude

AbstractA total of 176 homestead forests at three altitudes in the Chittagong Hill Tracts, Bangladesh were randomly surveyed to estimate carbon (C) stocks and how stand structure affects the biomass C. All woody vegetations were measured, and litter and soil (0–30 cm depth) were sampled. The tree biomass C stock in the top two altitude forests was up to 37–48% higher than in low altitude, owing to significantly higher tree density and species diversity. An increase in species diversity index by one unit increased the biomass stock by 23 Mg C ha−1. The C stock of litterfall in low altitude forests was 22–28% higher than in the top two altitude due to the deposition of litters downslope and deliberate use of mulch for soil improvement and conservation, resulting in up to 5% higher total soil C. The topsoil C was 10–25% higher than the deeper soil, depending on the altitude. The forest stored 89 Mg C ha−1, indicating a potential for C sequestration in trees outside forest. This study would help policymakers to strengthen the recognition of small-scale forests for mitigation in REDD + (reducing emissions from deforestation and forest degradation, the role of conservation, sustainable management of forests, and enhancement of forest carbon stocks) and support owners through C credits from sustainably managed forests.

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 Keanekaragaman Pari Hasil Tangkapan Nelayan di TPI Karangantu Banten

2021 ◽  
Vol 9 (3) ◽  
pp. 257-266
Author(s):  
Erreull Isyhadu Putri ◽  
◽  
Dinda Rizqi ◽  
Fenia Alya ◽  
Tia Azizah
Keyword(s):  
Species Diversity ◽  
Literature Review ◽  
Diversity Index ◽  
Conservation Status ◽  
Habitat Characteristics ◽  
Species Diversity Index ◽  
Interview Method

This study aims to determine the diversity of rays caught by fishermen in TPI Karangantu Banten. This research uses interview method and literature review. The discussion of the observations includes classification, habitat, characteristics, and conservation status. The results of this study indicate that there is a diversity of rays, namely the results of the families obtained from the observations are Rhinopteridae, Dasyatidae, and Gymnuridae). From the results of the calculation of the species diversity index using the Shannon Wiener formula, it is included in the medium category. This diversity can be used as knowledge and inventory for biodiversity, especially the chondrichthyes class in TPI Karangantu, Serang, Banten.

scholarly journals Phytoplankton Community Investigation and Water Quality Assessment of M River in winter in Shijiazhuang City

2021 ◽  
Vol 267 ◽  
pp. 01035
Author(s):  
Ziqi Zhang ◽  
Lei Yang ◽  
Dongxu Han ◽  
Hongyan Shen
Keyword(s):  
Water Quality ◽  
Species Diversity ◽  
Water Body ◽  
Phytoplankton Community ◽  
Diversity Index ◽  
Water Quality Assessment ◽  
Species Diversity Index ◽  
Wiener Diversity Index ◽  
Eutrophic Water ◽  
Evenness Index

An investigation of phytoplankton community and water quality for M River was conducted in December 2019.The results showed that 38 species of phytoplankton belonging to 6 phyla and 26 genera were collected. Among them, Bacillariophyta is the richest species, which accounted for 34.21%, followed by Cyanophyta with 26.32% and Chlorophyta with 28.95%. The density of phytoplankton was 63.0*106 inds/L which indicated as eutrophic water body. The highest density was Bacillariophyta, accounting for 51.03%. The Shannon-Wiener diversity index (H’) varied from 1.34 to 2.24, the Margalef Species diversity index (d) varied from 2.71 to 3.85, and the Pielou evenness index (J) varied from 0.38 to 0.67. According to the integrative analysis results of H’, d and J, M River water quality belongs to oligo-polluted, but individual sites belong to meso-polluted.

Species structure in Zambian miombo woodland

1987 ◽  
Vol 3 (2) ◽  
pp. 109-118 ◽  
Author(s):  
E. N. Chidumayo
Keyword(s):  
Species Diversity ◽  
Biological Diversity ◽  
Diversity Index ◽  
Species Density ◽  
Species Structure ◽  
Miombo Woodland ◽  
Species Diversity Index ◽  
Old Growth ◽  
Number Of Species ◽  
The Mean

ABSTRACTMiombo woodland in Zambia is divided into wetter and drier types by the 1100 mm mean rainfall isohyet. In the present study two wetter (Northern, Northwestern) and three drier (Central, Eastern, Western) miombo subtypes were recognized.A survey of the woody flora of 94 old-growth and 58 coppice stands in the five miombo subtypes revealed some significant differences in species diversity among them. The floristic differentiantion of miombo subtypes was best achieved by the use of the Shannon species diversity index (H′) and species density (number of species 0.1 ha−1 or 0.4 ha−1). H′ in miombo decreased from 2.247 in Northwestern to 2.136 in Northern, 2.052 in Eastern, 1.918 in Central and 1.824 in Western subtypes. Although species density was not significantly different between wetter miombo subtypes, this decreased in a similar fashion from 18.78 0.1 ha−1 in Northwestern to 18.30 in Northern, 16.65 in Eastern, 14.79 in Central and 12.29 in Western subtypes. The low species diversity in Western drier miombo was attributed to the combined effects of low soil fertility and rainfall.Although the mean number of species per 0.1 ha plot was higher in coppice samples, species richness (d) and index of diversity (H′) were lower than in old-growth samples. These results indicate lower species diversity in regenerating miombo. The dynamic aspects of species structure should therefore be considered in the future conservation of biological diversity in miombo woodland.

Fortran Program for Calculating Brillouin's Species Diversity Index

1980 ◽  
Vol 42 (3) ◽  
pp. 185-187 ◽  
Author(s):  
Jay R. Stauffer ◽  
Rodney L. Reish ◽  
W. Ford Calhoun
Keyword(s):  
Species Diversity ◽  
Diversity Index ◽  
Fortran Program ◽  
Species Diversity Index
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