Growth and nutrition of Quercus rubra L. seedlings and mature trees after three seasons of ozone exposure

Samuelson, Lisa J.; Kelly, John; Mays, Pascal; Edwards, G.S.

doi:10.1016/0269-7491(95)00067-4

Cited by 57 publications

(32 citation statements)

References 13 publications

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“…In Norway spruce, Keller and Matyssek [22] reported increased concentrations of Ca, Mg and N. Le Thiec et al [24] found increased concentrations of K and Ca in the same species, but a decrease in the K content of the beech leaves after O 3 fumigation. On the other hand, Samuelson et al [32] found that O 3 exposure reduced foliar N concentrations and Fangmeier et al [12] did not detect any O 3 effect on the nutrient content in spring wheat.…”

Section: Changes In the Nutrient Contentsmentioning

confidence: 97%

Ozone and water deficit reduced growth of Aleppo pine seedlings

Thiec

Manninen

2003

Plant Physiology and Biochemistry

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Section: Changes In the Nutrient Contentsmentioning

confidence: 97%

Ozone and water deficit reduced growth of Aleppo pine seedlings

Thiec

Manninen

2003

Plant Physiology and Biochemistry

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“…via upregulation of Rubisco enzymes; Andersen 2003;Luedemann et al 2005). Wright et al (1990) and Samuelson et al (1996) reported a similar increase of N storage in permanent woody tissues of young Loblolly Pine and Northern Red Oak respectively in response to higher ozone levels; but the origin of this N was believed to be increased internal translocation associated with enhanced premature leaf senescence, but not an increase of N uptake as in our study in monoculture. In mixed culture of our experiment no adaptation process was observed because of severe interspeciWc competition for N by spruce.…”

Section: Evects Of Elevated Omentioning

confidence: 46%

Nutrient contents and efficiencies of beech and spruce saplings as influenced by competition and O3/CO2 regime

et al. 2008

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Saplings of Fagus sylvatica and Picea abieswere grown under conditions of intra and interspeciWc competition in a 2-year phytotron study under combinations of ambient and elevated ozone (+O 3 which is 2 £ O 3 , but <150 nl l ¡1 ) as well as carbon dioxide concentrations (+CO 2 which is amb. CO 2 + 300 l CO 2 l ¡1 ) in a full factorial design. Saplings were analysed for various mineral nutrients in diVerent plant organs as well as biomass production and crown development. The study was based on the assumption that nutritional parameters important for growth and competitiveness are aVected by stress defence under limiting nutrient supply. The hypotheses tested were (1) that nutrient uptake-related parameters (a) as well as eYciencies in nutrient use for above-ground competition (b) of beech rather than spruce are impaired by the exposure to elevated O 3 concentrations, (2) that the eYciency in nutrient uptake of spruce is enhanced by elevated CO 2 concentrations in mixed culture, and (3) that the ability to occupy above-ground space at low nutrient cost is co-determinant for the competitive success in mixed culture. Clear nitrogen deWciencies were indicated for both species during the 2-year phytotron study, although foliar nitrogen-biomass relationships were not so close for spruce than for beech. O 3 stress did not impair nutrient uptake-related parameters of beech; thus hypothesis (1a). was not supported. A negative eVect of elevated O 3 (under amb. CO 2 ) on the N and P based eYciencies in above-ground space occupation (i.e. lower crown volume per unit of N or P invested in stems, limbs and foliage) of beech supported hypothesis (1b). It appeared that ozone stress triggered a nutrient demand for stress defence and tolerance at the expense of above-ground competition (trade-oV). Crown volume of beech under O 3 stress was stabilized in monoculture by increased nutrient uptake. In general, the +CO 2 -treatment was able to counteract the impacts of 2 £ O 3 . Elevated CO 2 caused lower N and S concentrations in current-year foliage of both tree species, slightly higher macronutrient amounts in the root biomass of spruce, but did not increase the eYciencies in nutrient uptake of spruce in mixed culture. Therefore hypothesis (2) was not supported. At the end of the experiment spruce turned out to be the stronger competitor in mixed culture as displayed by its higher total shoot biomass and crown volume. The amounts of macronutrients in the above-ground biomass of spruce individuals in mixed culture distinctly exceeded those of beech, which had been strongly reduced by interspeciWc competition. The superior competitiveness of spruce was related to higher N and P-based eYciencies in aboveground space occupation as suggested in hypothesis (3).

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“…This is also consistent with the lack of visible injuries for leaves or needles. EVects on N-nutrition like observed for adult trees of red oak (Samuelson et al 1996) . For beech there was also an eVect for P in the year 2004.…”

Section: Nutrient Concentrationsmentioning

confidence: 97%

“…Some authors reported for experiments with tree seedlings under laboratory or open-top chamber conditions, that elevated ozone reduced foliar nutrient levels: P, K, Mg was reduced in Norway spruce (Häberle 1995), N in yellow-poplar and eastern white pine (Scherzer et al 1998) and Mn in Scots pine (Utriainen et al 2000). The only investigation referring to adult trees relates to red oak, where foliar N concentrations were reduced due to multiseason ozone exposure (Samuelson et al 1996). The authors interpreted this eVect as the result of a retranslocation process within the plant.…”

Section: Introductionmentioning

confidence: 93%

Nutritional effects triggered by the extreme summer 2003 in the free air ozone fumigation experiment at the Kranzberger Forst

et al. 2008

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Since the year 2000 mature beech and spruce trees were treated in a Weld experiment with double ambient ozone concentrations. Elevated ozone had no inXuence on average single leaf biomass and there were also no ozone eVects on leaf nutrient concentrations in climatic normal years. However, the extraordinary dry summer 2003 triggered signiWcant diVerences between the fumigated and control trees. For beech in the year after the drought event the control trees surprisingly had signiWcantly lower foliar levels of K and P than in former years, whereas the ozone exposed trees showed no signiWcant nutritional eVects. There are indications, that the trees exposed to double ambient ozone were already adapted to higher ozone values, whereas the control trees experienced extraordinary high ambient ozone concentrations in the dry and sunny summer 2003. For spruce in autumn 2003 and 2004 ozone treated trees had signiWcantly higher foliar levels of K in current year needles than control trees, an eVect which cannot be thoroughly interpreted yet on the basis of the dataset available.

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Growth and nutrition of Quercus rubra L. seedlings and mature trees after three seasons of ozone exposure

Cited by 57 publications

References 13 publications

Ozone and water deficit reduced growth of Aleppo pine seedlings

Ozone and water deficit reduced growth of Aleppo pine seedlings

Nutrient contents and efficiencies of beech and spruce saplings as influenced by competition and O3/CO2 regime

Nutritional effects triggered by the extreme summer 2003 in the free air ozone fumigation experiment at the Kranzberger Forst

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