globalchange  > 影响、适应和脆弱性
DOI: 10.1111/gcb.12704
论文题名:
Genotypic trait variation modifies effects of climate warming and nitrogen deposition on litter mass loss and microbial respiration
作者: Hines J.; Reyes M.; Mozder T.J.; Gessner M.O.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2014
卷: 20, 期:12
起始页码: 3780
结束页码: 3789
语种: 英语
英文关键词: Phragmites australis ; Global change ; Interactive global-change effects ; Intraspecific genotypic diversity ; Litter decomposition
Scopus关键词: Phragmites australis ; nitrogen ; soil ; biological model ; chemistry ; climate change ; ecosystem ; genetic variability ; genetics ; genotype ; growth, development and aging ; metabolism ; microbiology ; oxygen consumption ; physiology ; plant leaf ; Poaceae ; soil ; Climate Change ; Ecosystem ; Genetic Variation ; Genotype ; Models, Biological ; Nitrogen ; Oxygen Consumption ; Plant Leaves ; Poaceae ; Soil ; Soil Microbiology
英文摘要: Intraspecific variation in genotypically determined traits can influence ecosystem processes. Therefore, the impact of climate change on ecosystems may depend, in part, on the distribution of plant genotypes. Here we experimentally assess effects of climate warming and excess nitrogen supply on litter decomposition using 12 genotypes of a cosmopolitan foundation species collected across a 2100 km latitudinal gradient and grown in a common garden. Genotypically determined litter-chemistry traits varied substantially within and among geographic regions, which strongly affected decomposition and the magnitude of warming effects, as warming accelerated litter mass loss of high-nutrient, but not low-nutrient, genotypes. Although increased nitrogen supply alone had no effect on decomposition, it strongly accelerated litter mass loss of all genotypes when combined with warming. Rates of microbial respiration associated with the leaf litter showed nearly identical responses as litter mass loss. These results highlight the importance of interactive effects of environmental factors and suggest that loss or gain of genetic variation associated with key phenotypic traits can buffer, or exacerbate, the impact of global change on ecosystem process rates in the future. © 2014 John Wiley & Sons Ltd.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/62194
Appears in Collections:影响、适应和脆弱性

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作者单位: Department of Aquatic Ecology, Eawag: Swiss Federal Institute of Aquatic Science and Technology, Dübendorf, Switzerland; Department of Experimental Limnology, Leibniz Institute of Freshwater Ecology and Inland Fisheries (IGB), Stechlin, Germany; Smithsonian Environmental Research Center, Edgewater, MD, United States; German Center for Integrative Biodiversity Research (iDiv), Halle-Jena-Leipzig, Germany; Department of Biology, Bryn Mawr, Bryn Mawr, PA, United States; Institute of Integrative Biology (IBZ), ETH Zurich, Zurich, Switzerland; Department of Ecology, Berlin Institute of Technology (TU Berlin), Berlin, Germany

Recommended Citation:
Hines J.,Reyes M.,Mozder T.J.,et al. Genotypic trait variation modifies effects of climate warming and nitrogen deposition on litter mass loss and microbial respiration[J]. Global Change Biology,2014-01-01,20(12)
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