Search Results - Spatial analysis (Statistics)

Spatial production allocation model (SPAM) 2005: Technical documentation by Wood-Sichra, Ulrike, Joglekar, Alison B., You, Liangzhi

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Inferring population history from fine-scale spatial genetic analysis in Oryza rufipogon (Poaceae) by Xu, Xian, Lu, Bao-Rong, Chen, Yolanda H., Xu, Ming, Rong, Jun, Ye, Pingyang, Chen, Jiakuan, Song, Zhiping

“…One subpopulation was composed of possible introgressed individuals, two subpopulations were composed of seed recruits and their descendants, and the fourth subpopulation consisted of reintroduced individuals, seed recruits and their descendants. Positive spatial genetic structures were detected by spatial autocorrelation statistics at the population (c. 63 m) and subpopulation levels (11–30 m), but the degree of autocorrelation was stronger at the population level. …”
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Short range spatial variability of soil physico-chemical variables related to earthworm clustering in a Neotropical gallery forest by Jiménez, J.J., Decaëns, Thibaud, Amézquita Collazos, Edgar, Rao, Idupulapati M., Thomas, Richard J., Lavelle, Patrick M.

“…Non-parametric statistics were used and included SADIE analysis and partial Mantel test, in addition to geostatistics (semi-variograms) and correlogram computation. …”
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Road connectivity, population, and crop production in Sub-Saharan Africa by Dorosh, Paul A., Wang, Hyoung Gun, You, Liangzhi, Schmidt, Emily

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Bayesian modelling of phosphorus content in wheat grain using hyperspectral reflectance data by Pacheco Gil, Rosa Angela, Velasco Cruz, Ciro, Pérez Rodriguez, Paulino, Burgueño, Juan, Pérez Elizalde, Sergio, Rodrigues, Francelino, Ortíz Monasterio, Jose Iván, Valle Paniagua, David Hebert del, Toledo, Fernando H.

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Estimation of genetic parameters using spatial analysis of Pinus elliottii Engelm. var. elliottii second-generation progeny trials in Argentina by Belaber, Ector C., Gauchat, Maria Elena, Rodriguez, Gustavo Hernan, Borralho, Nuno M., Cappa, Eduardo Pablo

“…The average individual-tree narrow-sense heritability estimates based on this spatial analysis were 0.49 for diameter at breast height, 0.36 for total height, and 0.48 for volume, with stem straightness being low to moderate (average = 0.11). …”
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Spatial Variability of Soil Acidity and Lime Requirements for Potato Cultivation in the Huánuco Highlands by Quispe Matos, Kenyi Rolando, Mejía, Sharon, Carbajal Llosa, Carlos Miguel, Alejandro Mendez, Lidiana Rene, Verástegui Martinez, Patricia, Solórzano Acosta, Richard Andi

“…The soil samples were collected from five locations in the province of Pachitea, Huánuco. Descriptive statistics, principal component analysis (PCA), and Pearson correlation analysis were used to identify the soil properties contributing most to total variance and those most strongly correlated with soil acidity. …”
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Spatiotemporal analysis of rainfall and temperature variability and trends for a mixed crop-livestock production system: its implications for developing adaptation strategies by Alemayehu, Sintayehu, Olago, Daniel, Alfred, Opere, Zeleke, Tadesse Terefe, Dejene, Sintayehu Workeneh

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An annual agricultural production statistics system for Uganda: Design considerations by Muwanga-Zake, E. S. K.

“…The main objective of agricultural statistics is to provide information on agricultural production. …”
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Estimating real snakebite incidence in Colombia by using mathematical modelling and statistical inference by Bravo Vega, Carlos, Renjifo Ibañez, Camila, Santos Vega, Mauricio, Leon Nuñez, Leonardo Jose, Angarita Sierra, Teddy, Cordovez, Juan Manuel

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Spatial differences in diet quality and economic vulnerability to food insecurity in Bangladesh: Results from the 2016 household income and expenditure survey by Mitu, Mst. Maxim Parvin, Islam, Khaleda, Sarwar, Sneha, Ali, Masum, Amin, Md. Ruhul

“…Both statistical and spatial analyses were applied while assessing diet qualities in terms of the household dietary diversity score (HDDS), percentage of food energy from staples (PFES), and percentage of expenditure on food (PEF) as an indicator of the economic vulnerability to food insecurity (EVFI). …”
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Assessing spatial genetic structure from molecular marker data via principal component analyses: a case study in a Prosopis sp. fores by Teich, Ingrid, Verga, Anibal Ramón, Balzarini, Mónica Graciela

“…Most methods in spatial statistics are devoted to univariate data whereas the nature of molecular marker data is highly dimensional. …”
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Spatiotemporal analysis of drought and rainfall in Pakistan via Standardized Precipitation Index: homogeneous regions, trend, wavelet, and influence of El Nino-southern oscillation by Oliveira-Junior, J.F. de, Shah, M., Abbas, A., Iqbal, Muhammad Shahid, Shahzad, R., Gois, G. de, Silva, M.V. da, Rosa Ferraz Jardim, A.M. da, Souza, A. de

“…Descriptive and exploratory statistics showed that G1 differs from the other groups in size and spatial distribution. …”
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Mapping Above Ground Carbon Storage and Sequestration in Thoria Watershed, India: A Spatially Explicit Ecosystem Service Assessment Using InVEST Model by Guo, Zhe, Sharma, Himani, Jadav, Mahesh, Zhang, Wei

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Spatially distributed freshwater demand for electricity in Africa by Gerbens-Leenes, P. W., Vaca-Jiménez, S. D., Holmatov, Bunyod, Vanham, Davy

“…Here we provide the spatially most detailed analysis presently available on freshwater demand for electricity for the recent year 2020, covering the whole of Africa. …”
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Mr. Bean: a comprehensive statistical and visualization application for modeling agricultural field trials data by Aparicio, Johan, Gezan, Salvador A., Ariza-Suarez, Daniel, Raatz, Bodo, Díaz, Santiago, Heilman-Morales, Ana, Lobaton, Juan

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Detecting spatio-temporal changes in the extent of seasonal and annual flooding in South Asia using multi-resolution satellite data by Amarnath, Giriraj, Ameer, Mohamed, Aggarwal, Pramod K., Smakhtin, Vladimir U.

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Assessment of water availability and consumption in the Karkheh River Basin, Iran using remote sensing and geo-statistics by Muthuwatta, Lal P., Ahmad, Mobin-ud-Din, Bos, M.G., Rientjes, T.H.M.

“…Precipitation was estimated using geo-statistical techniques while a Surface Energy Balance approach was selected for evapotranspiration estimation. …”
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Spatial interpolation of soil hydraulic properties and simulated rice yield by Wopereis, M.C.S., Stein, A., Kropff, M.J., Bouma, J.

“…A 60% increase in precision was achieved when relatively large management units were defined.A Geographical Information System was used to identify areas with greatest yield potential for rainfed dryland rice. Statistical analysis showed that the six soil units could be grouped into three yield classes. …”
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Spatial dissociation between two endogeic earthworms in the Colombian "Llanos" by Jiménez Jaén, J.J., Rossi, J.P.

“…However, the available statistical analyses show that the proportion of the population spatial variance that can be ascribed to soil habitat variability is modest. …”
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