Showing 161 - 180 results of 365 for search '"community structure"', query time: 0.04s Refine Results
  1. 161

    Examples of high performance liquid chromatography (HPLC) application in marine ecology studies in the northern Adriatic by Vesna Flander-Putrle

    Published 2010-06-01
    “…Using HPLC pigment analysis, we determined phytoplankton community structure in three different marine environments: in the area of a fish farm, in the area of sewage outlets, and in the mucilaginous aggregates. …”
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    Article
  2. 162

    The Role of Gut Microbiota in Male Erectile Dysfunction of Rats by Zhunan Xu, Shangren Wang, Chunxiang Liu, Jiaqi Kang, Yang Pan, Zhexin Zhang, Hang Zhou, Mingming Xu, Xia Li, Haoyu Wang, Shuai Niu, Li Liu, Daqing Sun, Xiaoqiang Liu

    Published 2025-01-01
    “…The characteristics of the intestinal microbiota community structure were significantly different. In the HFD-FMT group, 27 metabolites were significantly different and they were mainly involved in the several inflammation-related pathways. …”
    Article
  3. 163

    Effects of oil pollution on the growth and rhizosphere microbial community of Calamagrostis epigejos by Ying Wei, Yukun Zhu, Liqun Yang, Chen Chen, Ming Yue, Zhuxin Mao, Yuchao Wang, Qian Li, Yang Li, Jinlin Lv, Wenyan Xue

    Published 2025-01-01
    “…Metagenomic sequencing technology was employed to analyze the community structure and diversity of soil bacteria, fungi, archaea, and viruses. …”
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  4. 164

    Overlapping community detection in complex networks based on multi kernel label propagation by Kun DENG, Wen-ping LI, Fa-hong YU, Jian-pei ZHANG

    Published 2017-02-01
    “…In view of the strong randomness and pre-setting the related threshold of traditional overlapping community detection method based on label propagation,overlapping community detection in complex networks based on multi kernel label propagation (OMKLP) was proposed.Evaluation model of kernel nodes was proposed after analyzing the node's degree and local covering density of nodes and their neighbor nodes.And on this basis,the detection method of local kernel nodes was also presented.Based on local kernel nodes,a new asynchronous label propagation strategy ori-ented to overlapping community was proposed,which can rapidly distinguish inner nodes and outer nodes of communi-ties so as to obtain overlapping community structure.The analysis method of overlapping nodes was proposed to increase the accuracy of detecting overlapping nodes.Without any prior knowledge,only on the basis of the basic network infor-mation (nodes and links),the algorithm can detect the structure of overlapping communities accurately.Therefore,it ef-fectively solved the defect of the traditional label propagation algorithm.The algorithm was tested over benchmark net-works and real-world networks and also compared with some classic algorithms.The experiment results verify the valid-ity and feasibility of OMKLP.…”
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  5. 165

    CADANGAN KARBON PADA TEGAKAN POHON HUTAN KOTA DI TAMAN MARGASATWA RAGUNAN DKI JAKARTA by Mia Azizah, Nia Yuliani, Heriyanto Heriyanto

    Published 2019-05-01
    “…The objectives of this study are: To analyze the community structure of tree species that have potential carbon stocks, and estimate carbon stocks stored in tree trunks. …”
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  6. 166

    Social Network Community-Discovery Algorithm Based on a Balance Factor by Lizhao Liu, Xiaomei Shu, Biao Cai

    Published 2022-01-01
    “…Second, we used node-degree centrality, node density, and adaptability to detect overlaps between communities and then we removed these overlaps from the network to obtain a subnetwork with a clear community structure. Third, we obtained the preliminary community divisions by clustering the subnetworks, and these preliminary communities were usually the core parts of the communities they belonged to. …”
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  7. 167

    Functional diversity of soil microbiomes in forest ecosystems and the spread of ESKAPE pathogens by Lyudmyla Symochko, Olena Demyanyuk, M.N. Coelho Pinheiro

    Published 2025-02-01
    “…The article presents original research results focused on the long-term investigation of the soil microbiome in forest ecosystems, particularly examining microbial community structure, the abundance of major ecological-functional groups, and the spread of ESKAPE pathogens (Enterococcus faecium, Staphylococcus aureus, Klebsiella pneumoniae, Acinetobacter baumannii, Pseudomonas aeruginosa, Enterobacter species). …”
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  8. 168

    Parallel median consensus clustering in complex networks by Md Taufique Hussain, Mahantesh Halappanavar, Samrat Chatterjee, Filippo Radicchi, Santo Fortunato, Ariful Azad

    Published 2025-01-01
    “…For graphs with known communities, our consensus partition captures the actual community structure more accurately than alternative approaches. …”
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  9. 169

    Ecological Reconstruction of Rain-source Rivers after Sewage Interception in Highly Intensive Development Areas — A Case Study of Longgang River in Shenzhen by CHEN Yu, YANG Xiuchun, WANG Cong, XU Shengjun, WANG Jinglin

    Published 2022-01-01
    “…The Longgang River in Shenzhen is a representative of the rain-source rivers in highly intensive open areas.In recent years,Shenzhen has carried out sewage interception reconstruction along the Longgang River Basin.Although the water quality of the basin was improved,the reconstruction of the river's ecosystem has been neglected,resulting in spatially discontinuous transverse and longitudinal sections,damaged biological habitats,and a degraded biological community structure.A technology system for combined ecological river reconstruction is developed to provide technical support for the reconstruction of rain-source rivers featuring natural channel imitation,restoration of aquatic habitats,and ecological construction of riverside landscape corridors.The overall idea and technical framework of ecological reconstruction proposed in this paper can fully support the construction of a comprehensive demonstration zone for the reconstruction of aquatic ecological and healthy habitats in Shenzhen.Specifically,substantial increases are achieved in the species and diversity of aquatic organisms in the Longgang River Basin (an increase of 82.7% in species abundance and one of 46.5% in the diversity index),with intolerant species of benthic animals observed and the number of indigenous fish increased.The research results provide engineering samples for the ecological reconstruction of rain-source rivers in highly intensive development areas.…”
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  10. 170

    Accumulation of NH4+ and NO3− inside Biofilms of Natural Microbial Consortia: Implication on Nutrients Seasonal Dynamic in Aquatic Ecosystems by Andi Kurniawan, Tatsuya Yamamoto

    Published 2019-01-01
    “…The results showed the following: (1) the concentrations of NH4+ and NO3− inside the biofilm were much higher than those in the surrounding water; (2) the nutrient ion concentration inside the biofilm changed in synchrony with those in the surrounding water; (3) biofilm polymers have both positively and negatively charged sites; (4) electrostatic attractive interactions between the charged sites on biofilm polymers and oppositely charged ions outside the biofilm seem to play important roles in the accumulation of nutrient ions into the biofilm from the surrounding water; (5) the bacterial community structure differs between the biofilm and surrounding water. …”
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  11. 171

    Impact of Participatory Community Planning on Publicity in Public Space Renewal Based on Machine Learning Algorithm Based on Child-friendly Concept by Yang Dai, Jiayi Li

    Published 2022-01-01
    “…This would make the entire community structure unfriendly to children. Factors such as insufficient public play areas, messy traffic network design, and lack of recreational facilities suitable for children would limit children’s fun in the community’s public spaces. …”
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  12. 172

    Two-stage community detection algorithm based on label propagation by Xueliang SUN, Wei WANG, Junheng HUANG, Guodong XIN, Bailing WANG

    Published 2022-04-01
    “…Community detection is an important research topic of complex network analysis.The detection results help to understand the community structure of complex networks and provide support for downstream tasks, such as content recommendation, link detection.Considering the challenge of community detection in complex networks, a two-stage community detection algorithm based on label propagation (TS-LPA) was proposed.The TS-LPA algorithm quantified the propagation capability of nodes based on the extended neighborhood.Then a new evaluation index was proposed to measure the probability of influence between nodes using the information of nodes and the weight of edges in the network.Based on the calculation of node centrality, the algorithm determined the updating sequence of node labels and the selection strategy of seed nodes, which eliminated the instability of the algorithm in the updating process.The TS-LPA algorithm used the breadth-first propagation idea and introduced the second-stage label propagation method to improve the quality of community detection.When label began to spread, all neighboring nodes had an influence on the label of the related node.Meanwhile, the influence of neighboring seed nodes was added to complete label updating, in order to reduce the dominance of neighboring nodes on the updated node.The experimental results of different real data sets and synthetic data sets show that TS-LPA algorithm can eliminate randomness and show strong stability while effectively improving the quality of community detection.…”
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  13. 173

    Complex Analyses of Plankton Structure and Function by Karl E. Havens

    Published 2001-01-01
    “…The specific methods reviewed are 1) size spectrum analysis, 2) size-fractionated phytoplankton productivity, 3) size-fractionated zooplankton grazing, 4) plankton ecological transfer efficiency, and 5) grazer effects on phytoplankton community structure. Taken together, these methods can provide information on community ecological properties that are directly related to practical issues including water quality and fisheries productivity. …”
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  14. 174

    Distribution Characteristics and Environmental Response of Diatoms Deposited in Reservoirs in the Source Region of Le'an River by YIN Hongwei, ZHANG Jie, YAN Ruyu, JI Yong, XIAO Weiqi, CAI Gaotang

    Published 2024-01-01
    “…At present, the study of heavy metal pollution in the Le'an River Basin should be explored.To fully elucidate the environmental characteristics and change-driven processes of reservoirs in the source region of the Le'an River, this paper employs Qinghua and Shijing reservoirs with different ecological environments and development backgrounds as research objects.Experimental records of diatom species and physicochemical indicators in sedimentary column cores are conducted, and meanwhile combined with modern monitoring data and multivariate statistical methods, environmental characteristics driving factors affecting changes in sedimentary diatom assemblages and sedimentary environment in reservoirs are analyzed.The results show that nutrient levels in the reservoirs gradually increase with the depth to the surface, and the sediment pollution evaluation also reveals the collection process of nutrients.Universal and cleaning indicator species have been replaced by fouling-tolerant and eutrophication indicator species of sedimentary diatoms, with representative species being Achnanthidium minutissima and Navicula minima.The multivariate statistical analysis results show that TP, TN, TP, and TOC are the main driving factors of diatom community structure distribution in Qinghua and Shijing reservoirs respectively (p<0.05).Box plot analysis results of 18 diatom indices reveal that CEE and LOBO indices are screened and show sound evaluation suitability and correlation.The input of exogenous materials into the reservoirs is affected by different anthropogenic practices to drive the succession of the diatom community, with a trend towards eutrophication in both reservoirs.…”
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  15. 175

    Biodiversity of important commercial fish in Lhok Bengkuang fish landing, Tapaktuan regency, southern part of Aceh, Indonesia by Haris Iqbal Teuku, Putri Nazira

    Published 2025-01-01
    “…These findings provide valuable insights into the composition and community structure of fish species in Lhok Bengkuang coastal waters.…”
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  16. 176

    Diversity of Species and Behavior of Hymenopteran Parasitoids of Ants: A Review by Jean-Paul Lachaud, Gabriela Pérez-Lachaud

    Published 2012-01-01
    “…Based on their abundance and success in attacking ants, some parasitoid wasps like diapriids and eucharitids seem excellent potential models to explore how parasitoids impact ant colony demography, population biology, and ant community structure. Despite a significant increase in our knowledge of hymenopteran parasitoids of ants, most of them remain to be discovered.…”
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  17. 177

    Captivity Reduces Diversity and Shifts Composition of the Great Bustard (Otis tarda dybowskii) Microbiome by Zhiyuan Lu, Zhucheng Wang, Hexue Jia, Derong Meng, Dayong Wu

    Published 2025-01-01
    “…The results revealed a significant decline in alpha diversity and notable changes in microbial community structure in captive environments. Changes in diet and habitat are likely major factors contributing to these shifts. …”
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  18. 178

    Taxonomic distinctness and diversity patterns of a polychaete (Annelida) community on the continental shelf of the Southern Gulf of Mexico. by Benjamín Quiroz-Martínez, Pablo Hernández-Alcántara, David Alberto Salas de León, Vivianne Solís-Weiss, María Adela Monreal Gómez, León Felipe Álvarez Sánchez

    Published 2024-01-01
    “…Finally, we examined the spatial relationships between polychaete assemblages and environmental variables to test the relative importance of spatial and environmental components in annelid polychaete community structure from the Southern Gulf of Mexico. We used a combination of eigenvector-based multivariate analyses (dbMEMs) and distance-based redundancy analysis (dbRDA) to quantify the relative importance of these explanatory variables on the spatial variations of taxonomic distinctness. …”
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  19. 179

    The Importance of Soil Seed Bank Function in Studies of Grassland Degradation by Chao Chen, Wei He, John Scullion, Mike Wilkinson

    Published 2025-01-01
    “…Surveys of grassland degradation studies have revealed that only around 5% include information on soil seed bank composition and no one aspect of community structure features across all studies. Furthermore, the majority of studies provide information only on ground coverage, sward biomass or species diversity in the plant subcommunity, with very few including information on the health of the soil seed bank or how changes in the soil environment could drive further deterioration in the plant community size, structure or effective functioning of the soil seed bank. …”
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  20. 180

    CC2: Defending Hybrid Worm on Mobile Networks with Two-Dimensional Circulation Control by Hailu Yang, Deyun Chen, Guanglu Sun, Xiaoyu Ding, Yu Xin

    Published 2019-01-01
    “…The system maintains a set of community structure which describes the high-speed infection zone of worms and contains worm propagation by distributing the worm signature to the guard nodes selected from the periphery of each community. …”
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