Relative contributions of soil, foliar, and woody tissue respiration to total ecosystem respiration in four pine forests of different ages

2010 ◽  
Vol 115 (G3) ◽  
Author(s):  
Myroslava Khomik ◽  
M. Altaf Arain ◽  
Jason J. Brodeur ◽  
Matthias Peichl ◽  
Natalia Restrepo-Coupé ◽  
...  
Keyword(s):  
Ecosystem Respiration ◽  
Pine Forests ◽  
Tissue Respiration ◽  
Woody Tissue ◽  
Different Ages ◽  
Total Ecosystem Respiration

scholarly journals Woody-tissue respiration

2002 ◽  
Vol 153 (1) ◽  
pp. 8-9
Author(s):  
M. P. Lavigne
Keyword(s):  
Tissue Respiration ◽  
Woody Tissue

Woody-tissue respiration for Simarouba amara and Minquartia guianensis, two tropical wet forest trees with different growth habits

Oecologia ◽  
1994 ◽  
Vol 100 (3) ◽  
pp. 213-220 ◽  
Author(s):  
Michael G. Ryan ◽  
Robert M. Hubbard ◽  
Deborah A. Clark ◽  
Robert L. Sanford
Keyword(s):  
Tissue Respiration ◽  
Forest Trees ◽  
Woody Tissue ◽  
Tropical Wet Forest ◽  
Growth Habits

scholarly journals Spatial and temporal variation of CO<sub>2</sub> efflux along a disturbance gradient in a <i>miombo</i> woodland in Western Zambia

2011 ◽  
Vol 8 (1) ◽  
pp. 147-164 ◽  
Author(s):  
L. Merbold ◽  
W. Ziegler ◽  
M. M. Mukelabai ◽  
W. L. Kutsch
Keyword(s):  
Soil Respiration ◽  
Soil Temperature ◽  
Temporal Variation ◽  
Carbon Content ◽  
Ecosystem Respiration ◽  
Spatial And Temporal Variation ◽  
Co2 Efflux ◽  
Forest Reserve ◽  
Disturbance Gradient ◽  
Total Ecosystem Respiration

Abstract. Carbon dioxide efflux from the soil surface was measured over a period of several weeks within a heterogeneous Brachystegia spp. dominated miombo woodland in Western Zambia. The objectives were to examine spatial and temporal variation of soil respiration along a disturbance gradient from a protected forest reserve to a cut, burned, and grazed area outside, and to relate the flux to various abiotic and biotic drivers. The highest daily mean fluxes (around 12 μmol CO2 m−2 s−1) were measured in the protected forest in the wet season and lowest daily mean fluxes (around 1 μmol CO2 m−2 s−1) in the most disturbed area during the dry season. Diurnal variation of soil respiration was closely correlated with soil temperature. The combination of soil water content and soil temperature was found to be the main driving factor at seasonal time scale. There was a 75% decrease in soil CO2 efflux during the dry season and a 20% difference in peak soil respiratory flux measured in 2008 and 2009. Spatial variation of CO2 efflux was positively related to total soil carbon content in the undisturbed area but not at the disturbed site. Coefficients of variation of efflux rates between plots decreased towards the core zone of the protected forest reserve. Normalized soil respiration values did not vary significantly along the disturbance gradient. Spatial variation of respiration did not show a clear distinction between the disturbed and undisturbed sites and could not be explained by variables such as leaf area index. In contrast, within plot variability of soil respiration was explained by soil organic carbon content. Three different approaches to calculate total ecosystem respiration (Reco) from eddy covariance measurements were compared to two bottom-up estimates of Reco obtained from chambers measurements of soil- and leaf respiration which differed in the consideration of spatial heterogeneity. The consideration of spatial variability resulted only in small changes of Reco when compared to simple averaging. Total ecosystem respiration at the plot scale, obtained by eddy covariance differed by up to 25% in relation to values calculated from the soil- and leaf chamber efflux measurements but without showing a clear trend.

The contribution of beneath-snow soil respiration to total ecosystem respiration in a high-elevation, subalpine forest

2006 ◽  
Vol 20 (3) ◽  
pp. n/a-n/a ◽  
Author(s):  
Russell K. Monson ◽  
Sean P. Burns ◽  
Mark W. Williams ◽  
Anthony C. Delany ◽  
Michael Weintraub ◽  
...  
Keyword(s):  
Soil Respiration ◽  
Ecosystem Respiration ◽  
High Elevation ◽  
Subalpine Forest ◽  
Total Ecosystem Respiration

scholarly journals Soil respiration in a mixed temperate forest and its contribution to total ecosystem respiration

2005 ◽  
Vol 25 (5) ◽  
pp. 609-619 ◽  
Author(s):  
J. C. Yuste ◽  
M. Nagy ◽  
I. A. Janssens ◽  
A. Carrara ◽  
R. Ceulemans
Keyword(s):  
Soil Respiration ◽  
Temperate Forest ◽  
Ecosystem Respiration ◽  
Total Ecosystem Respiration

A distinct seasonal pattern of the ratio of soil respiration to total ecosystem respiration in a spruce-dominated forest

2005 ◽  
Vol 12 (2) ◽  
pp. 230-239 ◽  
Author(s):  
E. A. Davidson ◽  
A. D. Richardson ◽  
K. E. Savage ◽  
D. Y. Hollinger
Keyword(s):  
Soil Respiration ◽  
Ecosystem Respiration ◽  
Seasonal Pattern ◽  
Total Ecosystem Respiration

scholarly journals Woody Tissue Respiration in Stems of Red Pine (Pinus densiflora) Trees

2007 ◽  
Vol 9 (3) ◽  
pp. 203-208
Author(s):  
Myung-Hyun Kim ◽  
Kaneyuki Nakane ◽  
Young-Eun Na ◽  
Jeong-Taek Lee
Keyword(s):  
Pinus Densiflora ◽  
Red Pine ◽  
Tissue Respiration ◽  
Woody Tissue

scholarly journals Effects of xylem water transport on CO2 efflux of woody tissue in a tropical tree, Amazonas State, Brazil

Hoehnea ◽  
2012 ◽  
Vol 39 (1) ◽  
pp. 139-144 ◽  
Author(s):  
Norbert Kunert ◽  
Alida Mercado Cárdenas
Keyword(s):  
Xylem Sap ◽  
Major Influence ◽  
Tissue Respiration ◽  
Co2 Efflux ◽  
Diurnal Changes ◽  
Sap Flux ◽  
Woody Tissue ◽  
Night Time ◽  
Amazonas State ◽  
Xylem Sap Flux

We assessed the effect of xylem sap flux on radial CO2 efflux of woody tissue of a tropical trees species growing in the Center of Manaus (Amazonas State, Brazil). An open chamber system was used to constantly measure diurnal changes in CO2 efflux over several days. Xylem sap flux was monitored additionally. We found a strong relationship between temperature and woody tissue respiration rates during night time. CO2 efflux rates were reduced up to 35% during daytime most probably due to vertical water uptake within the tree trunks. The results suggest a distinct daytime depression of the CO2 efflux compared with a night time temperature relationship. Xylem sap flux appears to be a major influence on CO2 efflux rates. The reductions in CO2 efflux will become most distinct during periods with a high evaporative demand and predictions of CO2 efflux by the temperature/flux relation are critical during these periods.

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