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Relevant bibliographies by topics / Shannon evenness

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Academic literature on the topic 'Shannon evenness'

Author: Grafiati

Published: 2 June 2025

Last updated: 31 July 2025

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Journal articles on the topic "Shannon evenness"

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Efendi, Siska Chiko, Yaherwandi Yaherwandi, Ade Noferta, and Aditya Muhammad. "Keanekaragaman Coccinellidae Predator Pada Beberapa Ekosistem Perkebunan di Kabupaten Dharmasraya." Biosfer: Jurnal Tadris Biologi 10, no. 2 (2019): 157–68. http://dx.doi.org/10.24042/biosfer.v10i2.5558.

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The objectives of this research were to study the species diversity and to determine the dominant species of lady bird beetle predators in high land plantation ecosystem in West Sumatera. The samples were taken by hand collection and sweep net. The data of species diversity were analyzed using Shannon-Wiener index, evenness of species were analyzed by Simpson index, and dominant species using important value index. The results showed that there were 91 individuals predator found which consisted of 7 species. The highest species diversity (1.74) and evenness (0.89) were found in Pulau Punjung.

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Fort, Hugo. "Productivity vs. Evenness in the U.S. Financial Market: A Business Ecosystem Perspective." Entropy 25, no. 7 (2023): 1029. http://dx.doi.org/10.3390/e25071029.

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This paper starts by presenting an empirical finding in the U.S. stock market: Between 2001 and 2021, high productivity was achieved when the Shannon evenness—measuring the inverse of concentration—dropped. Conversely, when the Shannon evenness soared, productivity plunged. The same inverse relationship between evenness and productivity has been observed in several ecosystems. This suggests explaining this result by adopting the business ecosystem perspective, i.e., regarding the tangle of interactions between companies as an ecological network, in which companies play the role of species. A u

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Bajagain, Santish, Santosh Pokhrel, Shishila Baniya, Aavas Pradhan, Surakchya Paudel, and Ishwar Datt Joshi. "Avifaunal Diversity of Institute of Forestry Complex, Hetauda Metropolis, Nepal." Forestry: Journal of Institute of Forestry, Nepal 17 (December 23, 2020): 83–101. http://dx.doi.org/10.3126/forestry.v17i0.33624.

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Avifaunal diversity is the measure of species diversity via species richness and evenness. To this aim, avifaunal survey was conducted in the Institute of Forestry Complex, Hetauda from November 2017 to June 2018. Using line transect and point count methods, 132 species of birds were recorded, representing 15 orders and 44 families. Three species of these birds are in IUCN Red List while 90, 27 and 15 species are residential, visitor and migrant respectively. Higher Shannon diversity index (4.47) and Margalef index (18.78) indicate marked diversity and richness of bird species. A high value ca

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Darshan R and Jayalaxmi Narayan Hegde. "Diversity of Hymenopteran Parasitoids in different Crop Ecosystems." International Journal of Environment and Climate Change 14, no. 3 (2024): 585–607. http://dx.doi.org/10.9734/ijecc/2024/v14i34067.

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Surveys were carried out in different districts viz., Shivamogga, Davangere and Chitradurga of Karnataka to collect and document hymenopteran parasitoids parasitizing insect pests attacking different crop ecosystems. A total of 42 hymenopteran parasitoids species represented by 33 genera belonged 12 families were documented from a collection of 1379 specimens from different stages viz., egg, larva, pupa and adult stage of host insects from different host plants viz., rice, maize, cabbage, cotton, coconut, brinjal, cashew, crape jasmine, tobacco, field bean, soybean, arecanut, cocoa, okra and p

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Pallabi Das and V. P. Uniyal. "Diversity of bees in two crops in an agroforestry ecosystem in Kangsabati South Forest Division, Purulia, West Bengal, India." Journal of Threatened Taxa 15, no. 3 (2023): 22889–93. http://dx.doi.org/10.11609/jott.8273.15.3.22889-22893.

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The investigation study assesses the diversity of bees in Brinjal Solanum melongena L. and Ridge Gourd Luffa acutangula L. crop field from agroforestry ecosystem in South Kangsabati Forest Division, India. The study was carried out in May 2021 to May 2022 that based on transect, focal observation and pan trap samplings. A total of 1,085 individuals were identified during the field work, belonging to three family seven genera (Apis, Tetragonula, Xylocopa, Ceratina, Amegelia, Nomia, and Megachile) and seventeen species, the non Apis bees (63.78%) were most abundant than Apis bees (36.22%). In br

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Strong, W. L. "Biased richness and evenness relationships within Shannon–Wiener index values." Ecological Indicators 67 (August 2016): 703–13. http://dx.doi.org/10.1016/j.ecolind.2016.03.043.

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T N, Anusha, Nischitha R, and Shivanna M B. "Diversity of Mycoflora in Root and Rhizosphere Regions of Alloteropsis Cimicina (L.) Stapf." Shanlax International Journal of Arts, Science and Humanities 8, S1-Feb (2021): 31–35. http://dx.doi.org/10.34293/sijash.v8is1-feb.3928.

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Endophytic fungi described as the internal mycota of living plants. The present study is an attempt to document mycoflora diversity of root, rhizosphere, bulk soil of grass Alloteropsis cimicina (L.) Stapf a less known species from North East India in Bhadra reserve forest region in two different seasons. Isolation, fungal community from collected samples by Moist blotter method, Potato dextrose agar (PDA) method, Malt extract agar (MEA) methodStatistical analysis were done and the mean data by Simpson Diversity Index Shannon Evenness Shannon Diversity Index(H1 ) Simpson Evenness, Colonization

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Dagaonkar, Amita, and M. M. Prakash. "Diversity indices of phytoplankton at Munj sagar talab (Dhar, Madhya pradesh, India)." Environment Conservation Journal 12, no. 3 (2011): 29–32. http://dx.doi.org/10.36953/ecj.2011.120306.

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Phytoplankton is the significant formal natural occupier of all water bodies. They play an important role in the biosynthesis of organic material. Being an index of trophic status phytoplankton reflects the overall environmental condition of the system and its potentiality. Present investigation was carried out for a period of twenty four month to study the diversity indices. Simpson’s Index of Dominance ranged from 0.0441 to 0.0952. Shannon-Wiener Diversity (H) index ranged from 2.6298 to 3.2112.273. Evenness Index ranged from 0.5593 to 0.9808 during the study period. Keywords: Diversity inde

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Sen, Somdipta, Aritra Biswas, and Aniruddha Banerji. "Analysis of Avian Diversity at Chintamoni Kar Bird Sanctuary: An Urban Forest Perspective." UTTAR PRADESH JOURNAL OF ZOOLOGY 44, no. 12 (2023): 7–15. http://dx.doi.org/10.56557/upjoz/2023/v44i123528.

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Chintamoni Kar Bird Sanctuary (CKBS) is an urban forest located on the southern fringes of Kolkata. The objective of our study was to document and analyze the diversity of the avian population in CKBS. The line transect method was used and avian diversity, species richness and evenness were analyzed using Shannon Diversity Index, Shannon Equitability Index, relative diversity and relative abundance. Our study recorded 37 bird species belonging to 9 orders and 23 families with most species being recorded from Order Passeriformes followed by Piciformes and Ciconiiformes. The species were well di

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NAYAK, Ananya, and Sunanda SASMAL. "Post-monsoon bird assemblages in rural and riverine environments of Northern Howrah, West Bengal, India: A spatio-temporal approach." Notulae Scientia Biologicae 14, no. 1 (2022): 11078. http://dx.doi.org/10.15835/nsb14111078.

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The primary goal of this study was to evaluate avian assemblages in four different land types (Wetland Associated Bamboo Forest, Agricultural Land, Wetland Associated Agricultural Land and Riverside Agricultural Land) located in a flood prone area of South Bengal during the post monsoon months of 2020. Surveys were conducted for 48 days in a land type and time dependent manner to explore the changes in abundance, dominance, evenness and species richness. A total of 18654 observations belonging to 16 orders, 44 families, 70 genera and 81 species were recorded. Despite having lowest total count

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Dissertations / Theses on the topic "Shannon evenness"

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Washburn, Stephen Jackson. "The Epiphytic Macrolichens of the Greater Cincinnati, Ohio, Metropolitan Area." University of Cincinnati / OhioLINK, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1133992448.

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Boavista, Lidiane da Rosa. "ESTUDO DE COMUNIDADES VEGETAIS CAMPESTRES NA REGIÃO DO ALTO CAMAQUÃ, RIO GRANDE DO SUL." Universidade Federal de Santa Maria, 2012. http://repositorio.ufsm.br/handle/1/4846.

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Conselho Nacional de Desenvolvimento Científico e Tecnológico<br>Understanding the dynamics of vegetation could facilitate decision making and adoption of new management practices, seeking a better use of available resources in areas of natural grassland. This study aimed to evaluate the dynamics of a natural grassland vegetation subject to grazing and fertilization, in four different locations in the counties of Pinheiro Machado and Piratini, located in the upper basin region of Rio Camaquã. The treatments were a combination of the above factors. The estimation of species composition and biom

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TEIXEIRA, MONTEIRO ANTONIO MANUEL. "ASSESSMENT OF ECOLOGICAL CONDITIONS OF PERMANENT MEADOWS IN THE ITALIAN ALPS: LOSS, BIODIVERSITY AND REMOTE SENSING CHANGE DETECTION." Doctoral thesis, Università degli Studi di Milano, 2011. http://hdl.handle.net/2434/152908.

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The monitoring of ecological condition of grasslands ecosystems in the European Alps is a main issue for mountain regions, since the abandonment of traditional and sustainable management practices has exposed grassland habitat to significant impacts in a context of global environmental change. The present research project was focused in assessment of the state of permanent meadows in the lowlands of Valtellina Valley (80 km2), Italian Alps, during the timeframe 1980-2000. In specific, it quantified the land use/land cover changes and identified main drivers behind permanent meadows loss

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Holman, Krista Elaine. "The effects of sewage effluent on macroalgal and seagrass abundance, dry weight and diversity within Grahams Harbor, San Salvador, Bahamas." Miami University / OhioLINK, 2007. http://rave.ohiolink.edu/etdc/view?acc_num=miami1176261511.

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Books on the topic "Shannon evenness"

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Gleń-Karolczyk, Katarzyna. Zabiegi ochronne kształtujące plonowanie zdrowotność oraz różnorodność mikroorganizmów związanych z czernieniem pierścieniowym korzeni chrzanu (Atmoracia rusticana Gaertn.). Publishing House of the University of Agriculture in Krakow, 2019. http://dx.doi.org/10.15576/978-83-66602-39-7.

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Horseradish roots, due to the content of many valuable nutrients and substances with healing and pro-health properties, are used more and more in medicine, food industry and cosmetics. In Poland, the cultivation of horseradish is considered minor crops. In addition, its limited size causes horseradish producers to encounter a number of unresolved agrotechnical problems. Infectious diseases developing on the leaves and roots during the long growing season reduce the size and quality of root crops. The small range of protection products intended for use in the cultivation of horseradish generate

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Book chapters on the topic "Shannon evenness"

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Shokoohi, Ebrahim. "Biodiversity Analysis." In Methods and Techniques in Nematology. BENTHAM SCIENCE PUBLISHERS, 2025. https://doi.org/10.2174/9789815313680125010012.

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This chapter delves into the assessment of nematode biodiversity, which involves investigating the community of these organisms present in a given region. The biodiversity of nematodes can be studied through molecular or conventional approaches. In a conventional method, proper sampling is essential to accurately evaluate biodiversity, and this task is aided by the use of various indices, including Shannon, richness, evenness, and community indices. In the field of molecular biodiversity, researchers can investigate the diversity of nematodes by conducting metagenomic analysis of ribosomal DNA

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K.K. Amponsah, Samuel, Rachael Ackah, William Dzisenu Amekor, Asiedu Berchie, and Andrews Apraku. "Shark Fishing in Ghana: What We Ought to Know." In Sharks - Past, Present and Future. IntechOpen, 2023. http://dx.doi.org/10.5772/intechopen.109301.

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The main objective of the study was to assess the abundance and distribution of sharks in Ghana’s coastal area. Samples were collected daily from the three sampling sites from April – to December 2021. The data obtained from this study were assessed for species abundance and composition, ecological indices; species diversity, and exploitation status using PAST and Microsoft Excel. A total of eight species were recorded with Prionace glauca (68%) as the dominant species and Carcharhinus leucas (1%) as the least dominant species. The mean species richness index (SRI) of 0.9 indicated infinite di

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Fayiah, Moses, ShiKui Dong, Roberto Xavier Supe Tulcan, et al. "Dynamics of Grassland Vegetation Composition across different Land-use Types on the Qinghai Tibet Plateau: Implications to Combat Grassland Degradation." In Mountain Ecosystems and Resources Management. The Grassroots Institute, 2023. http://dx.doi.org/10.33002/mount.a/6.

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The constant biotic and abiotic interventions on the Qinghai Tibet Plateau (QTP) are seriously degrading the grasslands and, at the same time, restricting the active ecosystem function and grassland vegetation distribution on the plateau. This research analyses the dynamics of grassland vegetation composition across three land uses and counties. The degree of grassland degradation was divided into four land-use types based, i.e., healthy grassland (HG), restored grassland (RG), moderately degraded (MD) grassland, and severely degraded (SD) grassland. About 32 plant species were recorded in Tie

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"Marine Artificial Reef Research and Development: Integrating Fisheries Management Objectives." In Marine Artificial Reef Research and Development: Integrating Fisheries Management Objectives, edited by Jessica Jaxion-Harm, Stephen T. Szedlmayer, and Peter A. Mudrak. American Fisheries Society, 2018. http://dx.doi.org/10.47886/9781934874516.ch3.

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<em>Abstract</em>.—Visual census scuba surveys (<em>n </em>= 87) were used to compare fish assemblages among three artificial reef types: big reefs (e.g., ships), tank reefs (i.e., U.S. Army tanks) and small reefs (e.g., metal cages and concrete pyramids), over three locations on the continental shelf (inner shelf, 18–26-m depths; mid-shelf, 26–34-m depths; outer shelf, 34–41-m depths) from April 20, 2012 to November 30, 2015 in the northeast Gulf of Mexico. These surveys identified 66 fish taxa (lowest taxon: 58 species, five genera, three families), and 65 taxa were u

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Conference papers on the topic "Shannon evenness"

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Zornić, Vladimir, Mirjana Petrović, Snežana Babić, et al. "NPK FERTILIZER ADDITION EFFECT ON „NARDUS STRICTA“ TYPE GRASSLAND IN KOPAONIK MOUNTINE." In 1st International Symposium on Biotechnology. University of Kragujevac, Faculty of Agronomy, 2023. http://dx.doi.org/10.46793/sbt28.099z.

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This study examines how the addition of NPK fertilizers impacts the change in Nardus stricta type grasslands. The investigation was carried out on the mountain Kopaonik between 2009 and 2012. The effects of four fertilizing treatments: control; N60 (N60P60K60); N90 (N90P60K60); N120 (N120P60K60) on plant species composition, Shannon evenness, and EGQ (evaluation grassland quality index) were researched. The control treatment was dominated by Nardus stricta species, while Festuca rubra and Agrostis capillaris presence was a feature of fertilizing treatments. The highest nitrogen intake (N120) h

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Popović, Filip J., Tanja B. Trakić, Mirjana M. Stojanović, and Jovana M. Sekulić. "Abundance, species richness and diversity of earthworms (lumbricidae) in several habitats of the northern part of Jastrebac Mountain." In 2nd International Conference on Chemo and Bioinformatics. Institute for Information Technologies, University of Kragujevac, 2023. http://dx.doi.org/10.46793/iccbi23.280p.

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The aim of this study was to investigate the diversity of earthworms in different habitats (meadow, humid meadow, oak and beech forest). A total of nine earthworm species belonging to six genera were found in the studied habitats. In the studied habitats, the earthworm fauna was found to be different: the beech forest was richer in earthworms (6 taxa), while the oak forest was poorest in earthworms (3 taxa). The earthworm abundance was higher in the humid meadow (34 individuals), while was lower in the beech forest (17 individuals). A combination of the alpha diversity index (Shannon-Weaver, E

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Jakovljević, Marija M., Simona R. Đuretanović, Marijana D. Nikolić, et al. "Comparative assessment of fish diversity indices in protected Vlasina Reservoir and unprotected Gruža Reservoir." In 2nd International Conference on Chemo and Bioinformatics. Institute for Information Technologies, University of Kragujevac, 2023. http://dx.doi.org/10.46793/iccbi23.326j.

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The species diversity indices, namely the Shannon Index (H), Reciprocal Simpson’s Index (1/D), Fisher’s Alpha Diversity Index (A), and Pielou’s Evenness Index (J), were calculated for both the protected Vlasina Reservoir and the unprotected Gruža Reservoir. A total of 15 fish species were identified in the Vlasina Reservoir during the investigation period from 2003 to 2022, while the Gruža Reservoir revealed 10 fish species within the period from 2013 to 2021. The obtained values of the H, 1/D, and A indices, were not considerably high, sometimes even lower than expected, showing a slight incr

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Ureche, Dorel, and Camelia Ureche. "Study of fish communities in the Siret river, and some tributaries (Bacau – Racaciuni section, 2012-2016)." In International symposium ”Functional ecology of animals” dedicated to the 70th anniversary from the birth of academician Ion Toderas. Institute of Zoology, Republic of Moldova, 2019. http://dx.doi.org/10.53937/9789975315975.84.

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The study was carried out in Bacau - Racaciuni section of Siret River, on the main course of the river and on some of its tributaries during the period 2012-2016. The aim of our research study was to assess the actual state of fish communities in the study area, and also to highlight significant changes in fish communities, based on the ecological analysis. The biological material was sampled by electrofishing from 16 sampling sites, and then it was determined and immediately released. The taxonomic analysis highlights the presence of 27 fish species, two of them being non-native: Psedorasbora

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Salahi, Towhid, Hassan Pourbabaei, Mehrdad Ghodskhah, Maziar Salahi, and Sarkhosh Karamzadeh. "Study on Vegetation Composition in Broadleaved and Coniferous Plantations, Bibiyanlou’s Forest Park, Astara, Iran." In 3rd International Congress on Engineering and Life Science. Prensip Publishing, 2023. http://dx.doi.org/10.61326/icelis.2023.20.

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The aim of this study was to investigate vegetation composition in hardwood and conifers Plantation in 220 ha of Pinus taeda and alder and poplar hardwood plantation and its comparison with natural forests in Bibiyanlu protected forest park at Astara. A total of 60 sampling plots of 1000 m2 by randomly-systematic method using 150 × 150 m grid in plantation and 200 × 200 m in natural forest was implemented. Rosaceae and Aspidiaceae family had the highest species richness in the study area, respectively. The results of the classification of life forms based on Rankayer method showed that Hemicry

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Fei, Xian-yun, Zhi-guo Zhang, and Xiang-wei Gao. "The evenness degree evaluation of parkland location in the main province garden cities of Shandong Province based on 1km grid model." In 2012 Second International Workshop on Earth Observation and Remote Sensing Applications (EORSA). IEEE, 2012. http://dx.doi.org/10.1109/eorsa.2012.6261195.

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Aprillia, Ina, Muhammad Iqbal, Guntur Pragustiandi, et al. "Butterflies Diversity in Geothermal Powerplant Areas: Case Studies in Pt. Pertamina Geothermal Energy Lumut Balai, Muara Enim, South Sumatera." In International Conference on Industrial Sciences, Engineering and Technology toward Digital Era 2023. Trans Tech Publications Ltd, 2024. http://dx.doi.org/10.4028/p-6vijh1.

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This study aims to assess the diversity of butterflies (Lepidoptera: Rhopalocera) at the location of the PT Pertamina Geothermal Energy (PGE) Lumut Balai Geothermal powerplant, Muara Enim, South Sumatra. This rapid survey was carried out on 4-15 June 2023, taking place in 7 locations namely Cluster 5, Cluster 6, Cluster 7, Cluster 9, Cluster 10, APL 17 and APL 18. The method used is the direct observation method by walking along a 1000 meter transect line (Yustian et al., 2017) in each type of habitat (secondary forest, mixed shrub secondary forest, coffee plantation , open areas and secondary

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Reports on the topic "Shannon evenness"

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Савосько, Василь Миколайович, Наталія Вікторівна Товстоляк, Юрій Васильович Лихолат, and Іван Панасович Григорюк. Structure and Diversity of Urban Park Stands at Kryvyi Rih Ore-Mining & Metallurgical District, Central Ukraine. Podgorica, 2020. http://dx.doi.org/10.31812/123456789/3946.

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The present study examines the relationships between structure (floristic composition, dendrometric parameters), diversity (diversity and evenness indexes) of urban forest park stands and the ecological (soil fertility, soil moisture), environmental factors (air pollution). The study is based on the forest park stands inventory data, performed from 2012 to 2017 in Kryvyi Rih City, Central Ukraine. The floristic compositions of the urban forest park stands are poor. There are only 23 species that belong to 14 families and 12 genera. More families were represented by at least more than 2% of tax

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