Stomatal acclimation influences water and carbon fluxes of a beech canopy in northern Germany

Kutsch, Werner L.; Herbst, Mathias; Vanselow, Renate; Hummelshøj, P.; Jensen, N.O.; Kappen, L.

doi:10.1078/1439-1791-00054

Cited by 39 publications

(26 citation statements)

References 25 publications

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Section: Discussioncontrasting

confidence: 62%

“…Leaf stomata sensitivity can be affected by PPFD and leaf-to-air vapor deficit (VPD) (Kutsch et al 2001) and can be modified by acclimation to soil water status (Halldin et al 1984). However, in contrast to our results, Kutsch et al (2001) concluded that reduction in stomata aperture of beech leaves in dry air was negatively correlated with the sum of PPFD of the previous 3 weeks. The behavior observed for stomata closure in young leaves was not clearly observed in leaves collected in summer and autumn presumably because the thicker cuticle of older leaves would have affected total leaf conductance to a greater extent than in young leaves.…”

Section: Discussioncontrasting

confidence: 62%

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Microclimatic conditions determined by stem density influence leaf anatomy and leaf physiology of beech (Fagus sylvatica L.) growing within stands that naturally regenerate from clear-cutting

Closa

Irigoyen

Goicoechea

2010

Trees

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Beech forests naturally regenerating from clear-cutting can exhibit different microclimates depending on size of saplings and stem density. When beech trees are young and stem density is low, the level of radiation inside the ecosystem reaching the soil surface is high; consequently, air and soil temperatures rise and the soil water content may decrease. These microclimatic parameters presumably will affect the anatomy, photosynthesis, and carbon metabolism of beech leaves. We studied the morphology and physiology of sun and shade leaves of beech trees differing in age and growing within clear-cut areas with distinct microclimate. Results were compared with those of adult trees in an unmanaged forest. We selected a stand clear-cut in 2001 (14,000 trees ha -1 ), another clearcut in 1996 (44,000 trees ha -1 ) and an unmanaged forest (1,000 trees ha -1 ). Photosynthetic photon flux density (PPFD) incident on sun leaves, air temperature, soil moisture, and soil temperature within the forests affected water status and carbohydrate storage in all trees. As trees became older, PPFD also influenced pigment composition and Rubisco activity in sun leaves. On the other hand, shade leaves from the oldest trees were the most sensitive to PPFD, air temperature, and soil moisture and temperature inside the forest. Contrariwise, microclimatic parameters slightly affected the physiology of shade leaves of the beech in the stand with the highest light attenuation. Air and soil temperatures were the parameters that most affected the photosynthetic pigments and carbohydrate storage in shade leaves of the youngest trees.

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Section: Discussioncontrasting

confidence: 62%

Section: Discussioncontrasting

confidence: 62%

Microclimatic conditions determined by stem density influence leaf anatomy and leaf physiology of beech (Fagus sylvatica L.) growing within stands that naturally regenerate from clear-cutting

Closa

Irigoyen

Goicoechea

2010

Trees

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“…9). Kutsch et al (2001a) showed by means of model calculations that stomatal acclimation allows the plant to optimize for high carbon gain during periods of sufficient water supply and to save water during drought. It is important to note that decreases in stomatal conductance in many plants are inter-related with decreases in photosynthetic capacity (Hall and Schulze, 1980;Schulze and Hall, 1982).…”

Section: Discussionmentioning

confidence: 99%

“…Leaf stomatal sensitivity and maximum conductance can be modified within periods of several days to few weeks by phenology and by acclimation to factors such as soil water status (Halldin et al, 1984). Kutsch et al (2001a) assessed the influence of this mid-term stomatal acclimation on ecosystem fluxes by calculating canopy water and carbon balances for several years under different climates. In this context it is important to consider that canopy photosynthetic capacity (F P,sat ) is strongly correlated to maximum surface conductance (G s,sat ;Schulze et al (1994)).…”

Section: Introductionmentioning

confidence: 99%

Response of carbon fluxes to water relations in a savanna ecosystem in South Africa

et al. 2008

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Abstract. The principal mechanisms that connect carbon fluxes with water relations in savanna ecosystems were studied by using eddy covariance method in a savanna ecosystem at Kruger National Park, South Africa. Since the annual drought and rewetting cycle is a major factor influencing the function of savanna ecosystems, this work focused on the close inter-connection between water relations and carbon fluxes. Data from a nine-month measuring campaign lasting from the early wet season to the late dry season were used.Total ecosystem respiration showed highest values at the onset of the growing season, a slightly lower plateau during the main part of the growing season and a continuous decrease during the transition towards the dry season.The regulation of canopy conductance was changed in two ways: changes due to phenology during the course of the growing season and short-term acclimation to soil water conditions.The most constant parameter was water use efficiency that was influenced by VPD during the day but the VPD response curve of water usage did change only slightly during the course of the growing season and decreased by about 30% during the transition from wet to dry season.The regulation of canopy conductance and photosynthetic capacity were closely related. This observation meets recent leaf-level findings that stomatal closure triggers downregulation of Rubisco during drought. Our results may show the effects of these processes on the ecosystem scale.

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“…Evidence that stomatal closure avoids xylem embolism has been reported for contrasting tree species (Jones and Sutherland 1991;Bréda et al 1993a;Lu et al 1996). On the other hand, experimental data demonstrating that stomatal aperture is driven by solar radiation, air vapour pressure deficit, temperature and extractable soil water is also well established (Bréda et al 1993b;Kutsch et al 2001;Herbst 1995). Many studies have also reported that, as a rule, leaf position within the crown determines physiological and anatomical leaf traits (Aussenac and Ducrey 1977).…”

Section: Introductionmentioning

confidence: 94%

Disturbances in European beech water relation during an extreme drought

Peiffer

Bréda

Badeau

et al. 2014

Annals of Forest Science

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Stomatal acclimation influences water and carbon fluxes of a beech canopy in northern Germany

Cited by 39 publications

References 25 publications

Microclimatic conditions determined by stem density influence leaf anatomy and leaf physiology of beech (Fagus sylvatica L.) growing within stands that naturally regenerate from clear-cutting

Microclimatic conditions determined by stem density influence leaf anatomy and leaf physiology of beech (Fagus sylvatica L.) growing within stands that naturally regenerate from clear-cutting

Response of carbon fluxes to water relations in a savanna ecosystem in South Africa

Disturbances in European beech water relation during an extreme drought

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