Leaf thickness and UV-B absorbing pigments of plants in relation to an elevational gradient along the Blue Mountains, Jamaica

Rozema, J.; Chardonnens, Agnes N.; Tosserams, M.; Hafkenscheid, Raemond; Bruijnzeel, Sampurno

doi:10.1007/978-94-011-5718-6_14

Cited by 34 publications

(27 citation statements)

References 34 publications

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“…This is in agreement with the response of leaf thickness to low temperature (e.g. Kao and Chang 2001) and increased UV-B radiation (Rozema et al 1997) reported in interspecies experimental studies, as well as to increasing elevation in intraspecies studies (e.g. Filella and Peñuelas 1999).…”

Section: Differences In Species Group Responses Of Leaf Pigments and supporting

confidence: 79%

Different responses in leaf pigments and leaf mass per area to altitude between evergreen and deciduous woody species

Yang

2013

Aust. J. Bot.

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Abstract. Leaf chlorophyll content is positively associated with photosynthetic capacity and nutrient status, but its functional ecology has seldom been examined thus far. In the present study, we measured leaf chlorophyll and carotenoid concentrations, determined chlorophyll a : chlorophyll b (Chl a : Chl b) and carotenoids : chlorophyll ratios and measured leaf mass per area (LMA) for 63 woody dicot species, including 24 evergreen species and 39 deciduous species, at two altitudes (1800-2400 and 2400-2800 m a.s.l.) of Gongga Mountain, south-west China. The aim of the present study was to determine whether evergreen and deciduous species differ in terms of leaf pigment concentrations and LMA in response to environmental differences associated with changes in elevation. In both life forms, the altitude effect was not significant for chlorophyll and carotenoid concentrations. However, the Chl a : Chl b ratio was significantly higher in evergreen species, whereas LMA was significantly higher in deciduous species, at the high versus low altitude. These observations suggest that evergreen and deciduous species may have different strategies to protect leaf pigments. Mass-based leaf pigment concentrations were lower in evergreen compared with deciduous species, especially at high altitude. LMA was higher in evergreen than deciduous species at both altitudes. Pigment concentrations were negatively correlated with LMA in both life forms at both altitudes. The slope of LMA vs mass-based leaf pigment concentrations was significantly more negative for deciduous than evergreen species, and at low versus high altitude for deciduous species. The findings suggest that deciduous species may invest less photosynthate in leaf pigments but more in inactive components in stressful environments than do evergreens. Thus, the same magnitude of variation in LMA may have different consequences on leaf carbon balance between evergreen and deciduous species, which helps explain why evergreen species are often more likely to occupy more stressful environments than deciduous species.

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Section: Differences In Species Group Responses Of Leaf Pigments and supporting

confidence: 79%

Different responses in leaf pigments and leaf mass per area to altitude between evergreen and deciduous woody species

Yang

2013

Aust. J. Bot.

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“…For example in the Blue Mountains, Jamaica, at altitudes from 800 to 1600 m.a.s.l. the calculated UV-B flux increases from 9.45 kJ m À 2 day À 1 to 9.75 kJ m À 2 day À 1 and total UV-B absorbance by leaf tissue UACs increase by 67% in leaves of Bocconia frutescens (Tree poppy); a further three species yield similar results, although the pattern is less clear in an introduced species Trifolium repens (white clover) (Rozema et al, 1997). An additional study, looked at the response of Fagus sylvatica (European Beech) over an altitudinal transect of 685 m, from 131 to 816 m.a.s.l.…”

Section: Plant Responses To Uv-b Radiationmentioning

confidence: 87%

A novel palaeoaltimetry proxy based on spore and pollen wall chemistry

Lomax

Fraser

Harrington

et al. 2012

Earth and Planetary Science Letters

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“…According to Metcalfe and Chalk, 15 due to the wide range of morpho logical types, leaves are considered a highly variable structure in Fabaceae that shows great plasticity, but it is usually dorsiventral, and less frequently isobilateral. Moreover, palisade and spongy parenchyma are tissues known to reveal responses related to light, soil and water variations, according to Esau, 30 Levitt 31 and Rozema et al 32 The midrib, in transverse section, has a plane convex shape ( Figure. 3A B, D), with the vascular system constituted by a set of collateral vascular bundle. The distal portion of central vascular bundle exhibits a small semi arch shape with the xylem and phloem polarized in the adaxial and abaxial surfaces, respectively ( Figure 3A).…”

Section: Resultsmentioning

confidence: 99%