Seasonal Photosynthetic Activity in the Crown Compartments of European Ash (Fraxinus excelsior)

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43410%2F24%3A43925194" target="_blank" >RIV/62156489:43410/24:43925194 - isvavai.cz</a>
Alternative codes found
RIV/00216224:14310/24:00136207
Result on the web
<a href="https://doi.org/10.3390/f15040699" target="_blank" >https://doi.org/10.3390/f15040699</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3390/f15040699" target="_blank" >10.3390/f15040699</a>

Result language
angličtina
Original language name
Seasonal Photosynthetic Activity in the Crown Compartments of European Ash (Fraxinus excelsior)
Original language description
Leaves facing different directions (north, south, east, and west) receive differing levels of illumination, resulting in spatial differences in photosynthesis P-N in the crowns of mature trees. We measured diurnal trends in P-N for a semi-solitary European ash (Fraxinus excelsior) over spring, summer, and autumn and compared these data with leaf biometric traits and leaf area distribution. The highest light-saturated P-N (P-Nmax) was to the south and west, and the lowest to the north. Likewise, intrinsic water use efficiency, defined as the ratio (P-N:g(S)) of photosynthetic rate (P-N) and stomatal conductance (g(S)), was also lowest to the north. The thickest leaves were found on the northern face and the thinnest in the south, suggesting differences in leaf anatomy may have contributed to differences in P-N. The greatest leaf area was recorded in the southern crown quadrant, which contributed more than 50% of the tree's accumulated P-N. Our research emphasises the importance of choosing representative leaves for gas exchange measurements. In-depth studies into the spatial distribution of leaves and their traits will be necessary for accurate upscaling of leaf-level photosynthesis to whole tree and canopy levels.
Czech name
—
Czech description
—

Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
40102 - Forestry

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Similar results(10)