The presence of log and brush piles strongly increased the risk of tick exposure in residential yards in Staten Island, New York City – according to the results of a study published in Parasites & Vectors.
]) to reduce the dimensionality of the dataset. The Varimax rotation method was used to derive orthogonal principal components, and the first two dimensions were used as variables in the statistical model.Full size tableTo quantify the ‘permeability’ of a yard to hosts, we created a vegetation contrast raster layer using the CHM layer by estimating the height difference between any given pixel and its surrounding eight neighboring pixels.
Small numbers of ticks precluded analyses based on density. Yard- and landscape-level features were initially explored in separate models, including separate landscape-level models for each buffer radius size around yards. The Akaike information criterion was used to identify the most parsimonious model explaining variation in the presence of each tick species in yards from all possible combinations of explanatory variables [].
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