Stem and Branch Respiration of Beech: From Tree Measurements to Estimations at the Stand Level

• Stem and branch respiration of 30-yr-old Fagus sylvatica trees was measured in a temperate forest for 1 yr to estimate the annual flux at the stand level. • The seasonal response of respiration to air temperature was determined using infra-red gas analysis (IRGA) systems. Annual respiration was de...

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Bibliographic Details
Published in:The New phytologist 2002-01, Vol.153 (1), p.159-172
Main Authors: Damesin, C., Ceschia, E., Le Goff, N., J-M. Ottorini, Dufrêne, E.
Format: Article
Language:English
Subjects:
Agronomy. Soil science and plant productions
Air
annual carbon budget
Biological and medical sciences
Branches
Carbon dioxide
Coniferous forests
Economic plant physiology
Fagus sylvatica (beech)
Forest ecosystems
Forest stands
Fundamental and applied biological sciences. Psychology
Life Sciences
Metabolism
Net assimilation, photosynthesis, carbon metabolism. Photorespiration, respiration, fermentation (anoxia, hypoxia)
Nutrition. Photosynthesis. Respiration. Metabolism
Photosynthesis, respiration. Anabolism, catabolism
Phytopathology and phytopharmacy
Pine trees
Plant physiology and development
Respiration
scaling
seasonal change
Surface areas
temperature
Trees
trunk respiration
Vegetal Biology
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Summary:• Stem and branch respiration of 30-yr-old Fagus sylvatica trees was measured in a temperate forest for 1 yr to estimate the annual flux at the stand level. • The seasonal response of respiration to air temperature was determined using infra-red gas analysis (IRGA) systems. Annual respiration was derived from half-hourly temperature recording and allometric relations established for the same forest. • The basal respiration rate at 15°C (R15) increased greatly during the growing season. On a volume basis, monthly means of R15 were higher for branches than for stems. For stems, Q10 was relatively constant throughout the year, with an annual average of 1.7. Estimated annual respiration was approx. 325 g C m-2 ground surface area yr-1 with 50% of this amount attributed to growth respiration. • Stem and branch respiration played a major role in the annual carbon balance of the beech stand. It represented approx. one third of the ecosystem-level carbon loss from respiration. The magnitude of crown respiration makes it obvious that information on branch respiration characteristics is required for reliable estimations at the stand level.
ISSN:0028-646X
1469-8137
DOI:10.1046/j.0028-646x.2001.00296.x