In order to monitor natural and anthropogenic disturbance effects to wetland ecosystems, it is necessary to employ both accurate and rapid mapping of wet graminoid/sedge communities. Thus, it is desirable to utilize automated classification algorithms so that the monitoring can be done regularly and in an efficient manner. This study developed a classification and accuracy assessment method for...

Cardiorespiratory diseases are a serious public health problem worldwide. Identification of spatial patterns in health events is an efficient tool to guide public policies in environmental health. However, only few studies have considered spatial pattern analysis which is considered the evaluation of spatial autocorrelation, degree of autocorrelation and dependence behavior in terms of distance...

Comparison of 1719 differential GPS measurements with a 1 m LiDAR DEM covering West Seattle shows that DEM elevation errors range from –4.88 m to +3.32 m. The errors are spatially correlated with a semivariogram range of 125 m, an unclustered mean of –0.11 m, and an unclustered standard deviation of ±0.75 m. Although there are statistically significant correlations between elevation error and e...

Aiming to evaluate the soil textural classes distribution and the spatial correlation between the soil textural classes and both infiltration rate and salinity in an alluvial area, in Pernambuco State “agreste” region, indicator geostatistics has been applied, adopting a binary distribution based on the presence/absence of loam soils. Considering sampling points and test locations along the mai...

The authors wish to add the following amendments and corrections on their paper published in IJERPH [1]. 1. Page 3093, line 4, " spherical " and " exponential " were corrected instead of sphere and index. The sentence should read " The results obtained were then applied to the theoretical semivariogram models, including power, spherical, exponential, and Gaussian models ". The same situation in...

Arsenic pollution became a great problem in the recent past in different countries including Bangladesh. The microlevel studies were conducted to see the spatial variation of arsenic in soils and plant parts contaminated through ground water irrigation. The study was performed in shallow tube well command areas in Sadar Upazila (subdistrict), Faridpur, Bangladesh, where both soil and irrigation...

Ž . A calibrated Four-Electrode Probe FEP was used for inexpensive and indirect determinations Ž . of salinity-sensor Electrical Conductivity EC in a plot at Cauto Valley, Cuba. Two transects Ž . Ž . were made in the North–South N–S and East–West E–W directions. Laboratory measurements of soil EC were also made from samples taken on a 50-m spaced square grid. A linear semivariogram was obtained...

This study describes the spatial distribution pattern of Lu. longipalpis abundance in Posadas-Garupá, Argentina, where four cases of human Visceral Leishmaniasis had been recorded. A total of 2428 Lu. longipalpis were captured in 42% of the 305 sites sampled with CDC light traps, its abundance shows spatial autocorrelation ranging up to 590 m (semivariogram model), with six downtown 'islands' o...

This work presents a methodology for the refinement of shuttle radar topographic mission (SRTM-90m) data available for South America to enable detailed watershed studies in Amazonia. The original data were pre-processed to properly map detailed low-order drainage features and allowed digital estimates of morphometric variables. Spatial-resolution refinement (300 to 100, or 90 to 30m) through da...

A recent paper (1) purported to document negligible climatic determination among European bird species, with implications for forecasting range shifts in changing climates. However, only 12 of 100 species analyzed were endemic—thus, for the remaining 88% of test species, key limits with likely climatic determination were excluded, particularly eastward and southward (2). Second, the authors dev...