George L. W. Perry

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Many different sciences have developed many different tests to describe and characterise spatial point data. For example, all the trees in a given area may be mapped such that their x, y coordinates and other variables, or 'marks', (e.g. species, size) might be recorded. Statistical techniques can be used to explore interactions between events at different(More)
Humans have a long history of activity in Mediterranean Basin landscapes. Spatial heterogeneity in these landscapes hinders our understanding about the impacts of changes in human activity on ecological processes, such as wildfire. The use of spatially-explicit models that simulate processes at fine scales should aid the investigation of spatial patterns at(More)
Keywords: Landscape fire-succession model Wildfire regime Succession-disturbance dynamics Mediterranean landscape Pattern-oriented modelling a b s t r a c t We present a spatially explicit Landscape Fire-Succession Model (LFSM) developed to represent Medi-terranean Basin landscapes and capable of integrating modules and functions that explicitly represent(More)
Fire positively and negatively affects food webs across all trophic levels and guilds and influences a range of ecological processes that reinforce fire regimes, such as nutrient cycling and soil development, plant regeneration and growth, plant community assembly and dynamics, herbivory and predation. Thus we argue that rather than merely describing(More)
We present a simple framework for classifying mutually exclusive behavioural states within the geospatial lifelines of animals. This method involves use of three sequentially applied statistical procedures: (1) behavioural change point analysis to partition movement trajectories into discrete bouts of same-state behaviours, based on abrupt changes in the(More)
Evergreen broadleaved forests in subtropical China contain a complicated structure of diverse species. The impact of topographic and soil factors on the assembly of woody species in the forest has been poorly understood. We used Ripley's K(t) function to analyze the spatial patterns and associations of dominant species and residual analysis (RDA) to(More)
The objective of this study was to investigate the occurrence of density-dependent height relationships in jack pine (Pinus banksiana Lamb.) and black spruce (Picea mariana (Mill.) B.S.P.) populations. After assessing and ruling out the presence of consequential spatial correlation effects, the analysis consisted of analyzing the relationship between mean(More)