Temporal variation and climate dependence of soil respiration and its components along a 3000 m altitudinal tropical forest gradient
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ZIMMERMANN, M; Meir, Patrick; Bird, Michael I.; Malhi, Yadvinder; CCAHUANA, A. J . Q.
Description
To simulate the effect of temperature on soil respiration rates, we translocated soil cores among four sites (3030, 1500, 1000, and 200 m asl) along an altitudinal tropical forest gradient in the Peruvian Andes, traversing a difference in mean annual temperature of 13.9C. Rates of total (Rs) and heterotrophic (Rsh) respiration were measured twice a month from April 2007 to March 2009 and additionally for full 24 h periods. The diurnal range in Rs increased with altitude; this variation was...[Show more]
dc.contributor.author | ZIMMERMANN, M | |
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dc.contributor.author | Meir, Patrick | |
dc.contributor.author | Bird, Michael I. | |
dc.contributor.author | Malhi, Yadvinder | |
dc.contributor.author | CCAHUANA, A. J . Q. | |
dc.date.accessioned | 2015-12-13T22:45:01Z | |
dc.identifier.issn | 0886-6236 | |
dc.identifier.uri | http://hdl.handle.net/1885/79567 | |
dc.description.abstract | To simulate the effect of temperature on soil respiration rates, we translocated soil cores among four sites (3030, 1500, 1000, and 200 m asl) along an altitudinal tropical forest gradient in the Peruvian Andes, traversing a difference in mean annual temperature of 13.9C. Rates of total (Rs) and heterotrophic (Rsh) respiration were measured twice a month from April 2007 to March 2009 and additionally for full 24 h periods. The diurnal range in Rs increased with altitude; this variation was mainly root and litter derived, whereas Rsh varied only slightly over full 24 h periods. Although mean annual daytime Rs rates were not significantly different among the four sites (4.45-4.05 mol CO2 m-2 s-1), the annual amount of respired C decreased with increasing altitude from 1639 g C m-2 yr-1 at 200 m asl to 1064 g C m-2 yr-1 at 3030 m asl. The contribution of Rsh to Rs was not correlated with elevation and ranged from 25% to 60%. The temperature dependence of Rs was lower at the midelevation sites (Q10 of 2.07 and 2.94 at 1500 and 1000 m asl, respectively) than at the highest and lowest sites of the gradient (Q10 of 4.33 and 6.92 at 3030 and 200 m asl, respectively). The temperature sensitivity of Rsh was higher for the sites at 3030 and 200 m asl and increased with time, i.e., with the loss of the most labile C pools. | |
dc.publisher | American Geophysical Union | |
dc.source | Global Biogeochemical Cycles | |
dc.subject | Keywords: Diurnal ranges; Effect of temperature; Labile C; Mean annual temperatures; Soil cores; Soil respiration; Soil respiration rates; Temperature dependence; Temperature sensitivity; Temporal variation; Tropical forest; Lakes; Soils; altitudinal zonation; elev | |
dc.title | Temporal variation and climate dependence of soil respiration and its components along a 3000 m altitudinal tropical forest gradient | |
dc.type | Journal article | |
local.description.notes | Imported from ARIES | |
local.identifier.citationvolume | 24 | |
dc.date.issued | 2010 | |
local.identifier.absfor | 060705 - Plant Physiology | |
local.identifier.absfor | 060208 - Terrestrial Ecology | |
local.identifier.absfor | 069902 - Global Change Biology | |
local.identifier.ariespublication | f5625xPUB7980 | |
local.type.status | Published Version | |
local.contributor.affiliation | ZIMMERMANN, M, University of Edinburgh | |
local.contributor.affiliation | Meir, Patrick, College of Medicine, Biology and Environment, ANU | |
local.contributor.affiliation | Bird, Michael I., James Cook University | |
local.contributor.affiliation | Malhi, Yadvinder, University of Oxford | |
local.contributor.affiliation | CCAHUANA, A. J . Q., Universidad San Antonio Abad | |
local.description.embargo | 2037-12-31 | |
local.bibliographicCitation.issue | 4 | |
local.identifier.doi | 10.1029/2010GB003787 | |
local.identifier.absseo | 970106 - Expanding Knowledge in the Biological Sciences | |
dc.date.updated | 2016-02-24T09:38:40Z | |
local.identifier.scopusID | 2-s2.0-78149440237 | |
local.identifier.thomsonID | 000283942800001 | |
Collections | ANU Research Publications |
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