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231224s2014 xx |||||o 00| ||eng c |
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7 |
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|a 10.1111/nph.12675
|2 doi
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|a pubmed24n0781.xml
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|a (DE-627)NLM234415606
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|a (NLM)24417567
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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| 100 |
1 |
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|a Barron-Gafford, Greg A
|e verfasserin
|4 aut
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| 245 |
1 |
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|a Quantifying the timescales over which exogenous and endogenous conditions affect soil respiration
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|c 2014
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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|a Date Completed 03.11.2014
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|a Date Revised 23.04.2021
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a © 2014 The Authors. New Phytologist © 2014 New Phytologist Trust.
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|a Understanding how exogenous and endogenous factors and above-ground-below-ground linkages modulate carbon dynamics is difficult because of the influences of antecedent conditions. For example, there are variable lags between above-ground assimilation and below-ground efflux, and the duration of antecedent periods are often arbitrarily assigned. Nonetheless, developing models linking above- and below-ground processes is crucial for estimating current and future carbon dynamics. We collected data on leaf-level photosynthesis (Asat ) and soil respiration (Rsoil ) in different microhabitats (under shrubs vs under bunchgrasses) in the Sonoran Desert. We evaluated timescales over which endogenous and exogenous factors control Rsoil by analyzing data in the context of a semimechanistic temperature-response model of Rsoil that incorporated effects of antecedent exogenous (soil water) and endogenous (Asat ) conditions. For both microhabitats, antecedent soil water and Asat significantly affected Rsoil , but Rsoil under shrubs was more sensitive to Asat than that under bunchgrasses. Photosynthetic rates 1 and 3 d before the Rsoil measurement were most important in determining current-day Rsoil under bunchgrasses and shrubs, respectively, indicating a significant lag effect. Endogenous and exogenous controls are critical drivers of Rsoil , but the relative importance and the timescale over which each factor affects Rsoil depends on above-ground vegetation and ecosystem structure characteristics
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Bayesian modeling
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|a Prosopis velutina
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|a antecedent conditions
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|a lag effects
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|a mesquite
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|a photosynthesis
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|a soil respiration
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|a woody plant encroachment
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|a Soil
|2 NLM
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|a Water
|2 NLM
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|a 059QF0KO0R
|2 NLM
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| 650 |
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|a Carbon Dioxide
|2 NLM
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| 650 |
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|a 142M471B3J
|2 NLM
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| 650 |
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|a Carbon
|2 NLM
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| 650 |
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|a 7440-44-0
|2 NLM
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| 700 |
1 |
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|a Cable, Jessica M
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Bentley, Lisa Patrick
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Scott, Russell L
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Huxman, Travis E
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Jenerette, G Darrel
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Ogle, Kiona
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t The New phytologist
|d 1979
|g 202(2014), 2 vom: 12. Apr., Seite 442-454
|w (DE-627)NLM09818248X
|x 1469-8137
|7 nnns
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| 773 |
1 |
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|g volume:202
|g year:2014
|g number:2
|g day:12
|g month:04
|g pages:442-454
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| 856 |
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|u http://dx.doi.org/10.1111/nph.12675
|3 Volltext
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|d 202
|j 2014
|e 2
|b 12
|c 04
|h 442-454
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