The European Union (EU) White Paper on Growth, Competitiveness and Employment assigns a central role to the development of environmental technology. The motives for such a position are both environmental and economic. To promote innovation and the development and diffusion of new environmental techn
Gaps in the canopy: the missing dimension in vegetation dynamics
β Scribed by Silvertown, Jonathan ;Smith, Bridget
- Publisher
- Springer-Verlag
- Year
- 1988
- Tongue
- English
- Weight
- 326 KB
- Volume
- 77
- Category
- Article
- ISSN
- 1573-5052
No coin nor oath required. For personal study only.
β¦ Synopsis
Canopy gaps are important as entry points for new genotypes and new species into many types of vegetation, yet little is known about them in any type of vegetation but forests. Forest gaps are too large for manipulative experiments to be readily undertaken, and hitherto grassland gaps have been too small to be easily mapped. Preliminary results from mapping small (> 1 cm) grassland gaps with a new fibre-optic device suggest that experiments need to be performed at a smaller physical scale than has hitherto been achieved.
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Tree species replacement was studied in 95 canopy gaps created by the fall of single trees in an undisturbed, old-growth forest in Great Smoky Mountains National Park, Tennessee. When large trees (dbh>70 cm) of the very shade tolerant species, Tsuga canadensis, die and fall, they are usually replace