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Effects of rain shortage on carbon allocation, pools and fluxes in a Mediterranean shrub ecosystem - a C-13 labelling field study
Gavrichkova, Olga1,2,3,9; Liberati, Dario4; de Dato, Giovanbattista5; Abou Jaoude, Renee4; Brugnoli, Enrico1,2,3; de Angelis, Paolo4; Guidolotti, Gabriele1,2,3; Pausch, Johanna6,11; Spohn, Marie7; Tian, Jing6,8,11; Kuzyakov, Yakov6,9,10,11
2018-06-15
Source PublicationSCIENCE OF THE TOTAL ENVIRONMENT
ISSN0048-9697
Volume627Pages:1242-1252
Corresponding AuthorGavrichkova, Olga(olga.gavrichkova@ibaf.cnr.it)
AbstractHydrological cycle is expected to become the primary cause of ecosystem's degradation in near future under changing climate. Rain manipulation experiments under field conditions provide accurate picture on the responses of biotic processes to changed water availability for plants. A field experiment, mimicking expected changes in rain patterns, was established in a Mediterranean shrub community at Porto Conte, Italy, in 2001. In November 2011 Cistus monspeliensis, one of the dominating shrub species in the Mediterranean basin, was C-13 labelled on plots subjected to extended rain shortage period and on control non manipulated plots. Carbon (C) allocation was traced by C-13 dynamics in shoots, shoot-respired CO2, roots, microbial biomass, K2SO4-extractable C and CO2 respired from soil. Most of the recovered C-13 (60%) was respired by shoots within 2 weeks in control plots. In rain shortage treatment, C-13 remained incorporated in aboveground plant parts. Residence time of C-13 in leaves was longer under the rain shortage because less C-13 was lost by shoot respiration and because C-13 was re-allocated to leaves from woody tissues. The belowground C sink was weak (3-4% of recovered C-13) and independent on rain manipulation. Extended rain shortage promoted C exudation into rhizosphere soil in expense of roots. Together with lowered photosynthesis, this "save" economy of new C metabolites reduces the growing season under rain shortage resulting in decrease of shrub cover and C losses from the system on the long-term. (c) 2018 Elsevier B.V. All rights reserved.
KeywordDrought events Carbon fluxes Carbon partitioning Sugars Shoot respiration Root respiration Land use
DOI10.1016/j.scitotenv.2018.01.311
WOS KeywordSOUTH EUROPEAN GRADIENT ; SUMMER DROUGHT ; NONSTRUCTURAL CARBOHYDRATE ; TERRESTRIAL ECOSYSTEMS ; SEASONAL DIMORPHISM ; TEMPERATE GRASSLAND ; TREE MORTALITY ; SUB-SHRUBS ; SOIL ; PLANT
Indexed BySCI
Language英语
Funding ProjectEuropean Community's Seventh Framework Programme[227628] ; Autonomous Province of Trento (Italy) under Marie Curie Action - COFUND PostDoc Incoming program ; RUDN University Program 5-100
Funding OrganizationEuropean Community's Seventh Framework Programme ; Autonomous Province of Trento (Italy) under Marie Curie Action - COFUND PostDoc Incoming program ; RUDN University Program 5-100
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEnvironmental Sciences
WOS IDWOS:000431848500117
PublisherELSEVIER SCIENCE BV
Citation statistics
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/54947
Collection中国科学院地理科学与资源研究所
Corresponding AuthorGavrichkova, Olga
Affiliation1.CNR, Inst Agro Environm & Forest Biol, I-05010 Porano, Italy
2.CNR, Inst Agro Environm & Forest Biol, I-00015 Monterotondo, Italy
3.CNR, Inst Agro Environm & Forest Biol, I-38050 Cinte Tesino, Italy
4.Univ Tuscia, Dept Innovat Biol Agrofood & Forest Syst, I-01100 Viterbo, Italy
5.Council Agr Res & Econ CREA, Res Ctr Forestry & Wood, I-52100 Arezzo, Italy
6.Univ Gottingen, Dept Soil Sci Temperate Ecosyst, D-37077 Gottingen, Germany
7.Univ Bayreuth, Dept Soil Ecol, Bayreuth Ctr Ecol & Environm Res BayCEER, Bayreuth, Germany
8.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China
9.RUDN Univ, Peoples Friendship Univ Russia, Moscow 117198, Russia
10.Kazan Fed Univ, Inst Environm Sci, Kazan 420049, Russia
11.Univ Gottingen, Dept Agr Soil Sci, D-37077 Gottingen, Germany
Recommended Citation
GB/T 7714
Gavrichkova, Olga,Liberati, Dario,de Dato, Giovanbattista,et al. Effects of rain shortage on carbon allocation, pools and fluxes in a Mediterranean shrub ecosystem - a C-13 labelling field study[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2018,627:1242-1252.
APA Gavrichkova, Olga.,Liberati, Dario.,de Dato, Giovanbattista.,Abou Jaoude, Renee.,Brugnoli, Enrico.,...&Kuzyakov, Yakov.(2018).Effects of rain shortage on carbon allocation, pools and fluxes in a Mediterranean shrub ecosystem - a C-13 labelling field study.SCIENCE OF THE TOTAL ENVIRONMENT,627,1242-1252.
MLA Gavrichkova, Olga,et al."Effects of rain shortage on carbon allocation, pools and fluxes in a Mediterranean shrub ecosystem - a C-13 labelling field study".SCIENCE OF THE TOTAL ENVIRONMENT 627(2018):1242-1252.
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