Factors affecting aquatic beetle communities of Northern Western Ghats of India (Arthropoda: Insecta: Coleoptera)

We studied faunistic and ecological factors influencing distributions of aquatic beetles in the Northern Western Ghats (NWG) of India. In the period 2013–2017, we collected 213 samples from 105 localities within the area and obtained 66 species, the majority of which belong to Dytiscidae. Relative occurrence based on incidence data revealed that dytiscid water beetleLaccophilus inefficiensas the most widespread species. Non-parametric richness estimators Chao2, Jackknife1 and Bootstrap showed that 70–80% of the fauna was covered in the sampling efforts from different types of freshwater habitats. Sample-based rarefaction suggested that more sampling efforts within the region can yield additional species. Canonical correspondence analysis (CCA) revealed that altitude, salinity, hydroperiod and depth influenced the distribution of aquatic beetles. Further, CCA also revealed habitat preference and co-occurrence of various aquatic beetle species. For instance, while co-occurring species under Laccophilinae and Hydroporinae were eurytopic, other co-occurring speciesClypeodytes hemani,Microdytes sabitaeandLacconectus lambaiwere restricted to temporary habitats. Multiple correspondence analysis (MCA) showed a strong association between altitudinal classes and species distribution where many species were restricted within a particular altitudinal gradient. For example,M. sabitae,C. hemani,Hygrotus nilghiricus,L. lambaiandRhantus taprobanicuswith classes 900–1199 and 1200–1499 whileHyphydrus flavicans,Laccophilus ceylonicus,Lacconectus andrewesi,Sternolophus inconspicuusandCanthydrus laetabiliswith the class 300–599. The present work on aquatic beetles is the first attempt to study the influence of environmental factors on species diversity and distribution in the Northern Western Ghats of India.

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A new species of cryptic Bush frog (Anura, Rhacophoridae, Raorchestes) from northeastern Bangladesh

ZooKeys ◽

10.3897/zookeys.927.48733 ◽

2020 ◽

Vol 927 ◽

pp. 127-151

Author(s):

Hassan Al-Razi ◽

Marjan Maria ◽

Sabir Bin Muzaffar

Keyword(s):

New Species ◽

Western Ghats ◽

Southern China ◽

Morphological Characters ◽

Peninsular Malaysia ◽

Rrna Gene ◽

Additional Species ◽

Western Ghats Of India ◽

The Western Ghats ◽

A New Species

Raorchestes is a speciose genus of bush frogs with high diversity occurring in the Western Ghats of India. Relatively fewer species have been recorded across India, through Bangladesh, southern China, into Vietnam and Peninsular Malaysia. Many bush frogs are morphologically cryptic and therefore remain undescribed. Here, a new species, Raorchestes rezakhanisp. nov., is described from northeastern Bangladesh based on morphological characters, genetics, and bioacoustics. The 16S rRNA gene distinguished this species from 48 known species of this genus. Bayesian Inference and Maximum Likelihood analyses indicated that the new species was most similar to R. tuberohumerus, a species found in the Western Ghats, and to R. gryllus, a species found in Vietnam. Bioacoustics indicated that their calls were similar in pattern to most Raorchestes species, although number of pulses, duration of pulses, pulse intervals and amplitude differentiated it from a few other species. It is suggested that northeastern India, Bangladesh, northern Myanmar, and southern China represent important, relatively unexplored areas that could yield additional species of Raorchestes. Since many remaining habitat patches in Bangladesh are under severe threat from deforestation, efforts should be made to protect these last patches from further degradation.

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Status of the rare palm Bentinckia condapanna Berry in two habitats of Goodrical Reserve Forests; Western Ghats of India

Asia Pacific Journal of Environment Ecology and Sustainable Development ◽

10.3126/apjeesd.v1i1.9503 ◽

2014 ◽

Vol 1 (1) ◽

pp. 6-9

Author(s):

ES Abhilash ◽

Brijesh Sathian

Keyword(s):

Sustainable Development ◽

Western Ghats ◽

Evergreen Species ◽

Secondary Species ◽

Ecological Stress ◽

Lannea Coromandelica ◽

Western Ghats Of India

Bentinckia condapanna shows more IVI values and there by dominance and ecological stress in both the sites, that is, in sparsely distributed habitats as well as in dominated habitats (Site-II). Major associations /co dominance to Bentinckia condapanna in site -I were the evergreen species like Macaranga peltata, Elaeocarpus tuberculatus, Lannea coromandelica, Schefflera venulosa etc. and for site-II was the secondary species Chionanthus ramiflorus. Higher IVI values for Bentinckia condapanna in both the sites proves the capacity of this species to establish in mono-dominant and co- dominant communities. DOI: http://dx.doi.org/10.3126/apjeesd.v1i1.9503Asia Pacific Journal of Environment Ecology and Sustainable Development 2013; 1: 6-9

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Multiple-correspondence analysis optical microscopy for determination of starch granules

Journal of Chemometrics ◽

10.1002/cem.1180060307 ◽

1992 ◽

Vol 6 (3) ◽

pp. 163-175 ◽

Cited By ~ 5

Author(s):

M. F. Devaux ◽

E. M. Qannari ◽

D. J. Gallant

Keyword(s):

Optical Microscopy ◽

Correspondence Analysis ◽

Multiple Correspondence Analysis ◽

Starch Granules

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Informed Geoheritage Conservation: Determinant Analysis Based on Bibliometric and Sustainability Indicators Using Ordination Techniques

Land ◽

10.3390/land10050539 ◽

2021 ◽

Vol 10 (5) ◽

pp. 539

Author(s):

Boglárka Németh ◽

Károly Németh ◽

Jon N. Procter

Keyword(s):

Correspondence Analysis ◽

Conservation Planning ◽

Earth Science ◽

Multiple Correspondence Analysis ◽

Contributing Factors ◽

Usual Model ◽

Development Indicators ◽

Individual Variables ◽

Business As Usual ◽

World Development

Ordination methods are used in ecological multivariate statistics in order to reduce the number of dimensions and arrange individual variables along environmental variables. Geoheritage designation is a new challenge for conservation planning. Quantification of geoheritage to date is used explicitly for site selection, however, it also carries significant potential to be one of the indicators of sustainable development that is delivered through geosystem services. In order to achieve such a dominant position, geoheritage needs to be included in the business as usual model of conservation planning. Questions about the quantification process that have typically been addressed in geoheritage studies can be answered more directly by their relationships to world development indicators. We aim to relate the major informative geoheritage practices to underlying trends of successful geoheritage implementation through statistical analysis of countries with the highest trackable geoheritage interest. Correspondence analysis (CA) was used to obtain information on how certain indicators bundle together. Multiple correspondence analysis (MCA) was used to detect sets of factors to determine positive geoheritage conservation outcomes. The analysis resulted in ordination diagrams that visualize correlations among determinant variables translated to links between socio-economic background and geoheritage conservation outcomes. Indicators derived from geoheritage-related academic activity and world development metrics show a shift from significant Earth science output toward disciplines of strong international agreement such as tourism, sustainability and biodiversity. Identifying contributing factors to conservation-related decisions helps experts to tailor their proposals for required evidence-based quantification reports and reinforce the scientific significance of geoheritage.

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Multiple Correspondence Analysis

An Introduction to Correspondence Analysis - Wiley Series in Probability and Statistics ◽

10.1002/9781119044482.ch6 ◽

2021 ◽

pp. 143-161

Keyword(s):

Correspondence Analysis ◽

Multiple Correspondence Analysis

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Patterns of Italian high school and university students’ attitudes towards physics: an analysis based on semiotic-cultural perspective

European Journal of Psychology of Education ◽

10.1007/s10212-021-00563-z ◽

2021 ◽

Author(s):

Italo Testa ◽

Raffaele De Luca Picione ◽

Umberto Scotti di Uccio

Keyword(s):

High School ◽

Cluster Analysis ◽

University Students ◽

Correspondence Analysis ◽

Multiple Correspondence Analysis ◽

Psychological Theory ◽

Cultural Perspective ◽

Undergraduate Level ◽

Students Attitudes ◽

And Cluster Analysis

AbstractThe purpose of this study was to analyse Italian high school and university students’ attitudes towards physics using the Semiotic Cultural Psychological Theory (SCPT). In the SCPT framework, attitudes represent how individuals interpret their experience through the mediation of generalized meaning with which they are identified. A view-of-physics questionnaire was used as an instrument to collect data with 1603 high school and university students. Data were analysed through multiple correspondence analysis and cluster analysis. We identified four generalized meanings of physics: (a) interesting and important for society; (b) a quite interesting, but badly taught subject at school and not completely useful for society; (c) difficult to study and irrelevant for society; and (d) a fascinating and protective niche from society. The identified generalized meanings are significantly correlated to the choice to study physics at undergraduate level and to the choice of attending physics-related activities in high school. Implications for research are discussed.

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Effectiveness of mass treatment of Schistosoma mansoni infection in socially vulnerable areas of a state in northeastern Brazil, 2011–2014

Archives of Public Health ◽

10.1186/s13690-021-00549-9 ◽

2021 ◽

Vol 79 (1) ◽

Author(s):

Flávia Silvestre Outtes Wanderley ◽

Ulisses Montarroyos ◽

Cristine Bonfim ◽

Carolina Cunha-Correia

Keyword(s):

Schistosoma Mansoni ◽

Correspondence Analysis ◽

Social Vulnerability ◽

Multiple Correspondence Analysis ◽

Vulnerability Index ◽

Two Dimensions ◽

Northeastern Brazil ◽

Mass Treatment ◽

Social Vulnerability Index ◽

Treatment Information

Abstract Background To assess the effectiveness of mass treatment of Schistosoma mansoni infection in socially vulnerable endemic areas in northeastern Brazil. Method An ecological study was conducted, in which 118 localities in 30 municipalities in the state of Pernambuco were screened before 2011 and in 2014 (after mass treatment). Information on the endemic baseline index, mass treatment coverage, socio-environmental conditions and social vulnerability index were used in the multiple correspondence analysis. One hundred fourteen thousand nine hundred eighty-seven people in 118 locations were examined. Results The first two dimensions of the multiple correspondence analysis represented 55.3% of the variability between locations. The human capital component of the social vulnerability index showed an association with the baseline endemicity index. There was a significant reduction in positivity for schistosomes. For two rounds, for every extra 1% of initial endemicity index, the fixed effect of 13.62% increased by 0.0003%, achieving at most 15.94%. Conclusions The mass treatment intervention helped to reduce transmission of schistosomiasis in areas of high endemicity. Thus, it can be recommended that application of mass treatment should be accompanied by other control actions, such as basic sanitation, monitoring of intermediate vectors and case surveillance.

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