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An ecosystem approach to understanding cities: Familiar foundations and uncharted frontiers

Regional and landscape-scale nitrogen budgets

Topic: Urban Modeling

Nonparametric spatial covariance functions: Estimation and testing

Spatial autocorrelation techniques are commonly used to describe genetic and ecological patterns. To improve statistical inference about spatial covariance, we propose a continuous nonparametric estimator of the covariance function in place of the spatial correlogram. The spline correlogram is an adaptation of a recent development in spatial statistics and is a generalization of the commonly used correlogram. We propose a bootstrap algorithm to erect a confidence envelope around the entire covariance function. The meaning of this envelope is discussed.

Dispersal, environmental correlation, and spatial synchrony in population dynamics

Stochastic population dynamics and time series analysis of abundance: Two case studies

Population dynamics and recurrent epidemics of the measles

Persistence and outbreaks in viral diseases: Endemic and epidemic dynamics of measles

Westbury Cave: The Natural History Museum excavations 1976-1984

Taphonomic observations on a surface bone assemblage in a temperate environment

A bone assemblage of 133 bones from a series of upland environments in central Wales is described. The study area comprises unfenced hill land on the tops and upper slopes of the hills that is interspersed with fenced rough grazing in the valleys between. The area is largely grazed by sheep with some hill ponies and occasional cows. Wild animals include foxes and badgers in addition to small mammals.