Nitrogen additions and microbial biomass: a meta‐analysis of ecosystem studies

Ecology Letters - Tập 11 Số 10 - Trang 1111-1120 - 2008
Kathleen K. Treseder1
1Department of Ecology and Evolutionary Biology, University of California, Irvine, CA 92697, USA. [email protected]

Tóm tắt

AbstractNitrogen (N) enrichment is an element of global change that could influence the growth and abundance of many organisms. In this meta‐analysis, I synthesized responses of microbial biomass to N additions in 82 published field studies. I hypothesized that the biomass of fungi, bacteria or the microbial community as a whole would be altered under N additions. I also predicted that changes in biomass would parallel changes in soil CO2emissions. Microbial biomass declined 15% on average under N fertilization, but fungi and bacteria were not significantly altered in studies that examined each group separately. Moreover, declines in abundance of microbes and fungi were more evident in studies of longer durations and with higher total amounts of N added. In addition, responses of microbial biomass to N fertilization were significantly correlated with responses of soil CO2emissions. There were no significant effects of biomes, fertilizer types, ambient N deposition rates or methods of measuring biomass. Altogether, these results suggest that N enrichment could reduce microbial biomass in many ecosystems, with corresponding declines in soil CO2emissions.

Từ khóa


Tài liệu tham khảo

10.1016/S0065-2504(08)60016-1

Allen M.F., 1991, The Ecology of Mycorrhizae

10.1016/j.soilbio.2007.02.001

10.1111/j.1399-3054.1977.tb04877.x

10.1016/S0007-1536(88)80148-7

10.1016/0167-8809(91)90052-Y

Baath E., 1981, Effects of nitrogen fertilization on the activity and biomass of fungi and bacteria in a podzolic soil, Zentralblatt für Bakteriologie und Hygiene, I. Abt. Orig. C, 2, 90, 10.1016/S0721-9571(81)80021-X

10.4141/cjss84-037

10.1021/jf60113a003

10.2136/sssaj1965.03615995002900060028x

10.1016/0038-0717(85)90144-0

10.1128/AEM.65.7.2994-3000.1999

10.1086/284466

10.2136/sssaj1992.03615995005600030018x

10.1128/MMBR.60.4.609-640.1996

10.2136/sssaj2004.1320

10.1016/j.soilbio.2007.05.002

10.1016/j.soilbio.2007.08.019

10.1016/j.apsoil.2005.10.004

10.1201/9780203911440

10.1016/0038-0717(83)90030-5

Fenchel T., 1998, Bacterial Biogeochemistry: The Ecophysiology of Mineral Cycling

10.1128/AEM.71.7.4117-4120.2005

10.1111/j.1469-185X.1988.tb00725.x

10.1016/j.foreco.2004.03.018

10.1007/BF00384433

10.1007/s00248-003-9001-x

10.1890/0012-9658(1999)080[1142:SIIEMA]2.0.CO;2

10.2136/sssaj1967.03615995003100060019x

Hammel K.E.(1997).Fungal Degradation of Lignin. Driven by Nature: Plant Litter Quality and Decomposition.CAB International Wallingford pp.33–46.

10.1890/0012-9658(1999)080[1150:TMAORR]2.0.CO;2

10.1007/s10021-003-0110-7

10.1021/jf60015a004

10.3334/ORNLDAAC/730

10.1073/pnas.0406616101

10.1016/S0378-1127(99)00220-0

10.1139/b97-875

10.1128/JB.135.3.790-797.1978

10.1890/05-0150

10.1890/06-2057.1

10.1046/j.1469-8137.2001.00042-2.x

10.1890/1051-0761(2001)011[0397:EFACCO]2.0.CO;2

10.1890/0012-9658(2002)083[0104:BEFCCO]2.0.CO;2

10.1016/j.soilbio.2007.05.008

10.1023/A:1020858910646

Mangenot F., 1963, Populations microbiennes de bois. V. Influence de quelques sources de carbone et d’azote sur la decomposition d’une sciure, Rev. Gen. Bot., 70, 107

10.1016/0038-0717(92)90039-Z

10.1139/x93-160

10.1046/j.1469-8137.2003.00728.x

10.1007/s00442-007-0735-x

10.1139/x89-048

Paul E.A., 1996, Soil Microbiology and Biochemistry

10.1016/0038-0717(87)90108-8

10.1046/j.1469-8137.2001.00030.x

Read D.J., 1991, Frontiers in Mycology, 101

10.1073/pnas.0403588101

Rosenberg M.S., 2000, MetaWin: Statistical Software for Meta‐analysis

10.1007/BF00329758

10.1016/S0038-0717(03)00015-4

10.1111/j.1574-6968.1992.tb05331.x

10.1016/j.apsoil.2005.02.015

10.1016/0038-0717(89)90096-5

10.1139/m83-231

Sokal R.R., 1995, Biometry

10.1016/j.soilbio.2005.03.016

10.1126/science.1094678

10.1073/pnas.0408648102

Swift M.J., 1979, Decomposition in Terrestrial Ecosystems, 10.1525/9780520407114

10.1016/S0098-8472(97)00003-8

10.1111/j.1469-8137.2004.01159.x

10.1007/s11104-004-1559-7

10.1016/S0038-0717(00)00127-9

10.1002/(SICI)1099-145X(199609)7:3<257::AID-LDR257>3.0.CO;2-1

10.1007/BF00002772

10.1890/1051-0761(1997)007[0737:HAOTGN]2.0.CO;2

10.1016/0167-8809(91)90050-8

10.1097/00010694-192711000-00003

10.1007/s10021-004-0149-0

10.1016/0016-7061(76)90066-5

10.1046/j.1469-8137.1998.00176.x

10.1111/j.1469-185X.1992.tb00728.x