Mechanics and chemistry of rain forest leaves: canopy and understorey compared*
نویسندگان
چکیده
منابع مشابه
Mechanics and chemistry of rain forest leaves: canopy and understorey compared.
Despite the potential for changes during transit or preservation, the physicochemical properties of leaves are typically measured in a laboratory setting. A suite of laboratory methods adapted for use in the field is described here. The equipment is portable and operable in remote environments. Each technique has been validated against laboratory standards and has been tested throughout the tro...
متن کاملHigher clonal integration in the facultative epiphytic fern Selliguea griffithiana growing in the forest canopy compared with the forest understorey.
BACKGROUND AND AIMS The advantage of clonal integration (resource sharing between connected ramets of clonal plants) varies and a higher degree of integration is expected in more stressful and/or more heterogeneous habitats. Clonal facultative epiphytes occur in both forest canopies (epiphytic habitats) and forest understories (terrestrial habitats). Because environmental conditions, especially...
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It has long been assumed that forests represented vast expanses of homogeneous green tissue, but this assumption is oversimplified. When walking through a forest, we usually focus our observations on a narrow band of green foliage, from ground level to about 2 m in height. This represents at most 10% of the foliage in mature forests, with the rest often high above our heads and consequently bey...
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Variation in understorey irradiance is both a cause and consequence of the structure and dynamics of closed-canopy forests, which are also influenced by soil nutrients and water availability. We tested the hypothesis that understorey light regimes differ among four mixed dipterocarp forest types that share the same rainfall, but grow on different soils along an edaphic gradient at one site in B...
متن کاملPartitioning of understorey light and dry-season soil moisture gradients among seedlings of four rain-forest tree species in Madagascar
Resource partitioning has been hypothesized to play a role in the maintenance of tree diversity in tropical forests. We looked for evidence of light and soil moisture partitioning among seedlings of four native Malagasy tree species, the pioneer, gap-adapted species Harungana madagascariensis and the three shade-tolerant species Ocotea cymosa, Stephanostegia capuronii and Uapaca ferruginea. Fou...
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ژورنال
عنوان ژورنال: Journal of Experimental Botany
سال: 2003
ISSN: 1460-2431,0022-0957
DOI: 10.1093/jxb/erg224