Growth response of northern red-oak and yellow-poplar seedlings to light, soil moisture and nutrients in relation to ecological strategy

Kolb, Thomas E.; Steiner, Kim C.; McCormick, Larry H.; Bowersox, Todd W.

doi:10.1016/0378-1127(90)90086-q

Cited by 106 publications

(81 citation statements)

References 23 publications

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“…Working with the same species, Welander and Ottosoon (1998) found decreasing root/shoot ratios (dry weight) with decreasing light availability while Ziegenhagen and Kausch (1995) found larger leaf sizes with decreasing light. Similar morphological and biomass accumulation responses were found with other oak species (Gottschalk, 1994;Kolb et al, 1990).…”

Section: Discussionsupporting

confidence: 81%

“…Lockhart et al were watered to field capacity on a regular basis, those growing under full light probably experienced diurnal periods of water stress which triggered the observed 14 C allocation response to roots. Support for this argument has been established by others who examined root/shoot ratios of other oak species established under various light environments (Gardiner and Hodges, 1998;Kolb et al, 1990;Welander and Ottosson, 1998). We hypothesize that preferential root growth in full light, based on the 14 C distribution pattern, is necessary to increase water acquisition for stomatal tugor, thus allowing the plant to maintain photosynthesis as vapor pressure deficits increase diurnally.…”

Section: Discussionsupporting

confidence: 55%

“…Unfortunately, sustainability of the oak resource in tem-A key element needed to solve the oak regeneration problem is additional knowledge of basic seedling biology, including environmental requirements for seedling survival and development (Crow, 1988;Dickson et al, 2000a). Oak seedlings exhibit a stress-tolerant growth strategy whereby carbon acquisition and allocation are determined by resource availability and environmental conditions (Collet et al, 1998;Kolb et al, 1990). Plasticity in oak seedlings relative to other species enables them to respond to a wide range of environmental conditions.…”

Section: Introductionmentioning

confidence: 99%

“…Under favorable conditions, oak seedlings can exhibit rapid height growth by producing multiple flushes which increase leaf area and subsequent carbon acquisition in a positive feedback loop (Chaar et al, 1997;Collet and Frochot, 1996;Crow, 1988;Dickson et al, 2000aDickson et al, , 2000bHanson et al, 1986;Reich et al, 1980). Under unfavorable conditions, oak seedlings allocate carbon to specific tissues to tolerate or avoid stress (Abrams, 1990;Beon and Bartsch, 2003;Gardiner and Hodges, 1998;Kolb et al, 1990;van Hees, 1997;Welander and Ottosson, 1998;Ziegenhagen and Kausch, 1995). Oak seedlings also can readily sprout from dormant buds located at the base of the stem following disturbances such as fire and harvesting (Sander, 1972).…”

Section: Introductionmentioning

confidence: 99%

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Carbon allocation and morphology of cherrybark oak seedlings and sprouts under three light regimes

et al. 2008

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Abstract• Continued problems in regenerating oak forests has led to a need for more basic information on oak seedling biology.• In the present study, carbon allocation and morphology were compared between cherrybark oak (Quercus pagoda Raf.) seedlings and sprouts at 1-Lag grown in full, 47%, and 20% sunlight.• Results indicated that cherrybark oak seedling carbon allocation and morphology responded plastically to light availability. In full light, roots were sinks for 14 C, while shoots were sinks for 14 C under reduced light availability. Cherrybark oak sprouts exhibited similar carbon allocation patterns in response to light availability, but displayed stronger shoot sinks than seedlings when grown underreduced light availability. We also showed that young oak sprout roots are a sink for 14 C-photosynthates.• Results from this study point to the need for a morphological index for oak sprout development so more precise comparisons in sprout development and physiology can be made with seedlings. • Des problèmes continus pour la régénération des forêts de chêne ont conduit à un besoin de plus d'informations de base sur la biologie des semis de chêne. Mots-clés• Dans la présente étude, l'allocation de carbone et la morphologie ont été comparées entre des semis de Quercus pagoda Raf. et des rejets au stade de développement 1Lag cultivés en pleine lumière, à 47 % et à 20 % de lumière.• Les résultats ont indiqué que l'allocation de carbone et la morphologie des semis de chêne ont répondu plastiquement à la disponibilité en lumière. En pleine lumière, les racines ont été des puits pour 14 C, tandis que les pousses ont été des puits pour 14 C sous une disponibilité réduite de la lumière. Les rejets ont montré des modes d'allocation de carbone similaires en réponse à la disponibilité en lumière, mais ont montré des puits plus importants que les jeunes plants quand ils ont été cultivés sous un éclairement réduit. Nous avons également montré que les jeunes chênes pousses des racines sont un puits pour photosynthats 14 C.• Les résultats de cette étude soulignent le besoin d'un indice morphologique de développement des rejets de chêne de manière à pouvoir faire des comparaisons plus précises en ce qui concerne le développement des rejets et leur physiologie par rapport aux jeunes plants.

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Section: Discussionsupporting

confidence: 81%

Section: Discussionsupporting

confidence: 55%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Carbon allocation and morphology of cherrybark oak seedlings and sprouts under three light regimes

et al. 2008

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“…Because it is unlikely that tree growth is limited by deficiencies of only one resource in nature, comparative responses to multiple resources and their interactions are particularly relevant to understand adaptative strategies [8,17,26]. In particular, the interaction of light and water stresses may be a compromise between contradictory patterns on seedlings' physiological response.…”

Section: Introductionmentioning

confidence: 99%

Water relations of cork oak (Quercus suber L.) seedlings in response to shading and moderate drought

Pardos¹,

Clavijo²,

Aranda³

et al. 2005

Ann. For. Sci.

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-The interactive effects of light and drought on water relations and soluble sugars were addressed on Quercus suber L. seedlings grown under the combination of four irradiances and two soil water contents. Leaf water potentials at predawn and midday were lower for water stressed seedlings, independently of light environment. Osmotic potentials at full (Ψπ 100 ) and zero turgor (Ψπ 0 ) decreased with drought, under the four light treatments. However, the decline was greater with the development of water stress under the two treatments of higher light availability. The higher soluble sugar concentrations in seedlings grown under higher irradiances provoked a decrease of Ψπ 0. The decrease in Ψπ 100 and Ψπ 0 in moderate stressed seedlings was accompanied by an increase in ε max . The lower ability for osmotic adjustment in seedlings grown under moderate water stress and low light environment suggested a lower efficiency in developing physiological mechanisms for drought tolerance in shade-grown seedlings.cork oak / drought / light / osmotic adjustment / soluble sugars Résumé -Relations hydriques des semis de chêne-liège (Quercus suber L.) en réponse à l'ombre et à une sécheresse modérée. Les effets interactifs de la lumière et de la sécheresse sur les relations hydriques et les sucres solubles ont été étudiés sur des plantules de Quercus suber L. qui ont poussé sous la combinaison de quatre éclairements différents et de deux contenus en eau du sol. Les potentiels hydriques foliaires mesurés l'un avant l'aube et l'autre à midi étaient plus bas pour les plantules subissant un stress hydrique indépendamment du niveau d'éclairement. La pression osmotique à pleine turgescence (Ψπ 100 ) et la pression osmotique à turgescence nulle (Ψπ 0 ) ont diminué avec la sécheresse sous les quatre éclairements. Cependant, les diminutions étaient plus grandes pour les plantules soumises à un stress hydrique et à un éclairement élevé. La plus grande concentration de sucres solubles des plantules ayant poussé sous un plus grand éclairement a provoqué la diminution de Ψπ 0 . La diminution de Ψπ 100 et de Ψπ 0 pour les plantules ayant poussé sous une sécheresse modérée a été accompagnée d'une augmentation de ε max . La moindre capacité pour l'ajustement osmotique des plantules ayant poussé sous un stress hydrique modéré et une faible intensité lumineuse a montré une plus faible efficacité pour le développement des mécanismes physiologiques de tolérance à la sécheresse de ces plantules ayant poussé à l'ombre.chêne-liège / sécheresse / lumière / ajustement osmotique / sucres solubles

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Climate controls how ecosystems size the root zone storage capacity at catchment scale

Gao

Hrachowitz

Schymanski

et al. 2014

Geophysical Research Letters

190

216

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The root zone moisture storage capacity (S R ) of terrestrial ecosystems is a buffer providing vegetation continuous access to water and a critical factor controlling land-atmospheric moisture exchange, hydrological response, and biogeochemical processes. However, it is impossible to observe directly at catchment scale. Here, using data from 300 diverse catchments, it was tested that, treating the root zone as a reservoir, the mass curve technique (MCT), an engineering method for reservoir design, can be used to estimate catchment-scale S R from effective rainfall and plant transpiration. Supporting the initial hypothesis, it was found that MCT-derived S R coincided with model-derived estimates. These estimates of parameter S R can be used to constrain hydrological, climate, and land surface models. Further, the study provides evidence that ecosystems dynamically design their root systems to bridge droughts with return periods of 10-40 years, controlled by climate and linked to aridity index, inter-storm duration, seasonality, and runoff ratio.

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Growth response of northern red-oak and yellow-poplar seedlings to light, soil moisture and nutrients in relation to ecological strategy

Cited by 106 publications

References 23 publications

Carbon allocation and morphology of cherrybark oak seedlings and sprouts under three light regimes

Carbon allocation and morphology of cherrybark oak seedlings and sprouts under three light regimes

Water relations of cork oak (Quercus suber L.) seedlings in response to shading and moderate drought

Climate controls how ecosystems size the root zone storage capacity at catchment scale

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