Publication Date:
2005-08-16
Description:
Annual carbon flux through soil respiration is ten times greater than fossil fuel combustion, but its component parts are poorly understood because they are the product of complex multitrophic interactions between soil organisms. A major component of carbon flux from plants to soil occurs through networks of symbiotic arbuscular mycorrhizal fungi. Here, using 13CO2 pulse labeling, we show that natural densities of the numerically dominant fungal feeding invertebrate Protaphorura armata (order Collembola) reduces 13C enrichment of mycorrhizosphere respiration by 32%. Our findings emphasize the importance of multitrophic interactions in regulating respiration of recent plant photosynthate from soil.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Johnson, David -- Krsek, Martin -- Wellington, Elizabeth M H -- Stott, Andrew W -- Cole, Lisa -- Bardgett, Richard D -- Read, David J -- Leake, Jonathan R -- New York, N.Y. -- Science. 2005 Aug 12;309(5737):1047.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉School of Biological Sciences, University of Aberdeen, Aberdeen AB24 3UU, UK. D.Johnson@abdn.ac.uk〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16099977" target="_blank"〉PubMed〈/a〉
Keywords:
Animals
;
Arthropods/*physiology
;
Carbon Dioxide/*metabolism
;
Carbon Isotopes
;
*Ecosystem
;
Environment
;
Fatty Acids/analysis
;
Feeding Behavior
;
Food Chain
;
Mycorrhizae/metabolism/*physiology
;
Oxygen Consumption
;
Phospholipids/analysis
;
Plant Roots/microbiology
;
Scotland
;
*Soil/analysis
;
*Soil Microbiology
;
Symbiosis
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
,
Chemistry and Pharmacology
,
Computer Science
,
Medicine
,
Natural Sciences in General
,
Physics
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