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LIBRIS Formathandbok  (Information om MARC21)
FältnamnIndikatorerMetadata
00003411naa a2200481 4500
001oai:DiVA.org:umu-37319
003SwePub
008101027s2010 | |||||||||||000 ||eng|
0247 a https://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-373192 URI
0247 a https://doi.org/10.1111/j.1365-2435.2009.01683.x2 DOI
040 a (SwePub)umu
041 a engb eng
042 9 SwePub
072 7a ref2 swepub-contenttype
072 7a art2 swepub-publicationtype
1001 a Metcalfe, Daniel B.4 aut
2451 0a Impacts of experimentally imposed drought on leaf respiration and morphology in an Amazon rain forest
264 c 2010-01-28
264 1b Wiley,c 2010
338 a print2 rdacarrier
520 a P>1. The Amazon region may experience increasing moisture limitation over this century. Leaf dark respiration (R) is a key component of the Amazon rain forest carbon (C) cycle, but relatively little is known about its sensitivity to drought. 2. Here, we present measurements of R standardized to 25 degrees C and leaf morphology from different canopy heights over 5 years at a rain forest subject to a large-scale through-fall reduction (TFR) experiment, and nearby, unmodified Control forest, at the Caxiuana reserve in the eastern Amazon. 3. In all five post-treatment measurement campaigns, mean R at 25 degrees C was elevated in the TFR forest compared to the Control forest experiencing normal rainfall. After 5 years of the TFR treatment, R per unit leaf area and mass had increased by 65% and 42%, respectively, relative to pre-treatment means. In contrast, leaf area index (L) in the TFR forest was consistently lower than the Control, falling by 23% compared to the pre-treatment mean, largely because of a decline in specific leaf area (S). 4. The consistent and significant effects of the TFR treatment on R, L and S suggest that severe drought events in the Amazon, of the kind that may occur more frequently in future, could cause a substantial increase in canopy carbon dioxide emissions from this ecosystem to the atmosphere.
650 7a NATURVETENSKAPx Biologix Botanik0 (SwePub)106072 hsv//swe
650 7a NATURAL SCIENCESx Biological Sciencesx Botany0 (SwePub)106072 hsv//eng
7001 a Lobo-do-Vale, Raquel4 aut
7001 a Chaves, Manuela M.4 aut
7001 a Maroco, Joao P.4 aut
7001 a Aragao, Luiz E. O. C.4 aut
7001 a Malhi, Yadvinder4 aut
7001 a Da Costa, Antonio L.4 aut
7001 a Braga, Alan P.4 aut
7001 a Goncalves, Paulo L.4 aut
7001 a De Athaydes, Joao4 aut
7001 a Da Costa, Mauricio4 aut
7001 a Almeida, Samuel S.4 aut
7001 a Campbell, Catherine,d 1976-u Umeå universitet,Umeå Plant Science Centre (UPSC)4 aut0 (Swepub:umu)caca0029
7001 a Hurry, Vaughan,d 1960-u Umeå universitet,Institutionen för fysiologisk botanik,Umeå Plant Science Centre (UPSC)4 aut0 (Swepub:umu)vahu0001
7001 a Williams, Mathew4 aut
7001 a Meir, Patrick4 aut
7102 a Umeå universitetb Umeå Plant Science Centre (UPSC)4 org
7730 t Functional Ecologyd : Wileyg 24:3, s. 524-533q 24:3<524-533x 0269-8463x 1365-2435
8564 u http://repositorio.ispa.pt///bitstream/10400.12/1710/1/FE%2024%20524%E2%80%93533.pdf
8564 8u https://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-37319
8564 8u https://doi.org/10.1111/j.1365-2435.2009.01683.x

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