BibTex format
@article{Perkins:2012:10.1111/j.1365-2486.2011.02597.x,
author = {Perkins, DM and YvonDurocher, G and Demars, BOL and Reiss, J and Pichler, DE and Friberg, N and Trimmer, M and Woodward, G},
doi = {10.1111/j.1365-2486.2011.02597.x},
journal = {Global Change Biology},
pages = {1300--1311},
title = {Consistent temperature dependence of respiration across ecosystems contrasting in thermal history},
url = {http://dx.doi.org/10.1111/j.1365-2486.2011.02597.x},
volume = {18},
year = {2012}
}
RIS format (EndNote, RefMan)
TY - JOUR
AB - <jats:title>Abstract</jats:title><jats:p>Ecosystem respiration is a primary component of the carbon cycle and understanding the mechanisms that determine its temperature dependence will be important for predicting how rates of carbon efflux might respond to global warming. We used a rare model system, comprising a network of geothermally heated streams ranging in temperature from 5 °C to 25 °C, to explore the nature of the relationship between respiration and temperature. Using this ‘natural experiment’, we tested whether the natal thermal regime of stream communities influenced the temperature dependence of respiration in the absence of other potentially confounding variables. An empirical survey of 13 streams across the thermal gradient revealed that the temperature dependence of wholestream respiration was equivalent to the average activation energy of the respiratory complex (0.6–0.7 eV). This observation was also consistent for <jats:italic>insitu</jats:italic> benthic respiration. Laboratory experiments, incubating biofilms from four streams across the thermal gradient at a range of temperatures, revealed that the activation energy and Q<jats:sub>10</jats:sub> of respiration were remarkably consistent across streams, despite marked differences in their thermal history and significant turnover in species composition. Furthermore, absolute rates of respiration at standardised temperature were also unrelated to ambient stream temperature, but strongly reflected differences in biofilm biomass. Together, our results suggest that the core biochemistry, which drives the kinetics of oxidative respiratory metabolism, may be well conserved among diverse taxa and environments, and that the intrinsic sensitivity of respiration to temperature is not influenced by ambient environmental temperature.</jats:p>
AU - Perkins,DM
AU - YvonDurocher,G
AU - Demars,BOL
AU - Reiss,J
AU - Pichler,DE
AU - Friberg,N
AU - Trimmer,M
AU - Woodward,G
DO - 10.1111/j.1365-2486.2011.02597.x
EP - 1311
PY - 2012///
SN - 1354-1013
SP - 1300
TI - Consistent temperature dependence of respiration across ecosystems contrasting in thermal history
T2 - Global Change Biology
UR - http://dx.doi.org/10.1111/j.1365-2486.2011.02597.x
VL - 18
ER -