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Your search keyword '"Norton, D.A."' showing total 16 results
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16 results on '"Norton, D.A."'

2. Clear-fell harvest impacts on biodiversity: past research and the search for harvest size thresholds

Author

Pawson, S.M., Brockerhoff, E.G., Norton, D.A., and Didham, R.K.

Subjects
Logging -- Research -- Environmental aspects, Biological diversity -- Research -- Environmental aspects, Forests and forestry -- Research -- Environmental aspects, Earth sciences, Research, Environmental aspects
Abstract

Abstract: Clear-fell harvesting has large aesthetic impacts and significantly alters ecosystem attributes at multiple spatial scales. Known abiotic changes include increased microclimatic variability, changes in regional water balance, and modified [...]

Published
2006

7. CLIMATE AND GROWTH OF PINUS SYLVESTRIS AT ITS UPPER ALTITUDINAL LIMIT IN SCOTLAND: EVIDENCE FROM TREE GROWTH-RINGS.

Author

Grace, J. and Norton, D.A.

Subjects
*SCOTS pine, *TREE growth, *VEGETATION & climate
Abstract

(1) The influence of climatic factors on the growth of Pinus sylvestris was evaluated by comparing annual ring-widths from seven sites along an altitudinal gradient in Scotland with monthly climatic data. (2) Temperature was found to be more important than rainfall in influencing growth. Both late-winter (January-February) and summer (July -- August) temperatures were significantly and positively correlated with ring-width. Winter browning or frost drought is a possible cause of the winter temperature correlation. (3) Krummholz trees, at the tree-line, were found to grow more, and their growth was less strongly correlated with climatic factors, than trees at lower elevations. It is suggested that this is due to their short stature and resaltant higher tissue temperatures. [ABSTRACT FROM AUTHOR]

Published
1990
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