Pollen data from a monitoring network of 14 impact samplers in Islington, North London are used to investigate spatial variations in the abundance of Gramineae, Betula and Platanus pollen deposition. Weekly accumulative pollen counts were collected from January through to October over two consecutive years. Differences in deposition between sites are examined in relation to topography, local sources, and climatic variables.
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Emberlin et al. (1991) studied this question.
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