+ Site Statistics
+ Search Articles
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ PDF Full Text
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Translate
+ Recently Requested

Drought during canopy development has lasting effect on annual carbon balance in a deciduous temperate forest

Drought during canopy development has lasting effect on annual carbon balance in a deciduous temperate forest

New Phytologist 179(3): 818-828

* Climate change projections predict an intensifying hydrologic cycle and an increasing frequency of droughts, yet quantitative understanding of the effects on ecosystem carbon exchange remains limited. * Here, the effect of contrasting precipitation and soil moisture dynamics were evaluated on forest carbon exchange using 2 yr of eddy covariance and microclimate data from a 50-yr-old mixed oak woodland in northern Ohio, USA. * The stand accumulated 40% less carbon in a year with drought between bud-break and full leaf expansion (354 +/- 81 g C m(-2) yr(-1) in 2004 and 252 +/- 45 g C m(-2) yr(-1) in 2005). This was caused by greater suppression of gross ecosystem productivity (GEP; 16% = 200 g) than of ecosystem respiration (ER; 11% = 100 g) by drought. Suppressed GEP was traced to lower leaf area, lower apparent quantum yield and lower canopy conductance. The moisture sensitivity of ER may have been mediated by GEP. * The results highlight the vulnerability of the ecosystem to even a moderate drought, when it affects a critical aspect of development. Although the drought was preceded by rain, the storage capacity of the soil seemed limited to 1-2 wk, and therefore droughts longer than this are likely to impair productivity in the region.

(PDF emailed within 0-6 h: $19.90)

Accession: 022460931

Download citation: RISBibTeXText

PMID: 18537894

DOI: 10.1111/j.1469-8137.2008.02501.x

Related references

Carbon balance in a cool–temperate deciduous forest in northern Japan seasonal and interannual variations, and environmental controls of its annual balance. Journal of Forest Research 17(3): 253-267, 2012

Drought acclimation of two deciduous tree species of different layers in a temperate forest canopy. Trees 18(1): 93-101, 2004

How the environment, canopy structure and canopy physiological functioning influence carbon, water and energy fluxes of a temperate broad-leaved deciduous forest--an assessment with the biophysical model CANOAK. Tree Physiology 22(15-16): 1065-1077, 2002

Environmental controls on light inhibition of respiration and leaf and canopy daytime carbon exchange in a temperate deciduous forest. Tree Physiology 2018, 2018

Canopy duration has little influence on annual carbon storage in the deciduous broad leaf forest. Global Change Biology 9(7): 967-972, 2003

Photosynthetic and structural characteristics of canopy and shrub trees in a cool-temperate deciduous broadleaved forest: implication to the ecosystem carbon gain. Agricultural and Forest Meteorology 134(1/4): 39-59, 2005

Effects of canopy phenology on deciduous overstory and evergreen understory carbon budgets in a cool-temperate forest ecosystem under ongoing climate change. Ecological Research 30(2): 267-277, 2015

The importance of root respiration in annual soil carbon fluxes in a cool-temperate deciduous forest. Agricultural and Forest Meteorology 134(1/4): 95-101, 2005

Conversion of biomass to charcoal and the carbon mass balance from a slash-and-burn experiment in a temperate deciduous forest. Holocene 17(4): 539-542, 2007

Inter-annual variability of carbon budget components in a cool-temperate deciduous forest in Japan (Takayama, AsiaFlux). Phyton Horn 45(4): 81-88, 2005

Characterization of seasonal variation of forest canopy in a temperate deciduous broadleaf forest, using daily MODIS data. Remote Sensing of Environment 105(3): 189-203, 2006

Statistical analyses of inter-annual variations in the vertical profile of atmospheric CO2 mixing ratio and carbon budget in a cool-temperate deciduous forest in Japan. Agricultural and Forest Meteorology 134(1/4): 17-26, 2005

Factors influencing sapling composition in canopy gaps of a temperate deciduous forest. Vegetatio 120(1): 21-31, 1995

Canopy geometry and the interception of PAR in a temperate deciduous forest: an interpretation of hemispherical photographs. Crop structure and light microclimate: characterization and applications: 373-384, 1993

Drought tolerance, xylem sap abscisic acid and stomatal conductance during soil drying: a comparison of canopy trees of three temperate deciduous angiosperms. Tree Physiology 18(7): 431-439, 1998