Hauptseite > Publikationsdatenbank > Nitrogen input by cyanobacterial biofilms on an inselberg into a tropical rainforest in French Guiana > print

001     56249
005     20190625111754.0
024 7 _ |2 DOI
|a 10.1016/j.flora.2006.12.001
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037 _ _ |a PreJuSER-56249
041 _ _ |a eng
082 _ _ |a 580
084 _ _ |2 WoS
|a Plant Sciences
100 1 _ |a Dojani, S.
|b 0
|0 P:(DE-HGF)0
245 _ _ |a Nitrogen input by cyanobacterial biofilms on an inselberg into a tropical rainforest in French Guiana
260 _ _ |a München
|b Elsevier
|c 2007
300 _ _ |a 521 - 529
336 7 _ |a Journal Article
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336 7 _ |a article
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440 _ 0 |a Flora - Morphology, Distribution, Functional Ecology of Plants
|x 1618-0585
|0 17501
|v 202
500 _ _ |a Record converted from VDB: 12.11.2012
520 _ _ |a Inselbergs are isolated rock outcrops displaying high heterogeneity in both soil formation and microclimatic condition with high variation in plant biodiversity. Vegetation patterns on inselbergs in the humid tropics range from rocks covered with dense biofilms predominated by cyanobacteria to high forest on deep soils. Along a similar transect, we investigated N supply to the vegetation using element and isotopic analyses of soil and biofilm samples from an inselberg in French Guiana. An increase in N content related to total dry weight (N%) in soils from the inselberg peak to surrounding habitats was related to changes in stable isotope composition (delta N-15). At the inselberg peak cyanobacterial biofilms on bare rocks and soils within small vegetation islands had similar delta N-15 values of -1.9 parts per thousand and - 1.3 parts per thousand while delta N-15 of soils progressively increased towards the primary rainforest up to 6 parts per thousand. From the peak towards the base of the inselberg, the density of higher plants and soil depth increased. Hence, soil N cycling and N losses to the environment resulted in a progressive increase of soil delta N-15. The distribution of N%, delta N-15 and delta C-13 values suggest that the main N supply for soils at and nearby the inselberg is derived from cyanobacterial N-2 fixation through leaching processes. (c) 2007 Elsevier GmbH. All rights reserved.
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653 2 0 |2 Author
|a nitrogen
653 2 0 |2 Author
|a cyanobacteria
653 2 0 |2 Author
|a allocation
653 2 0 |2 Author
|a leaching
700 1 _ |a Lakatos, M.
|b 1
|0 P:(DE-HGF)0
700 1 _ |a Rascher, U.
|b 2
|u FZJ
|0 P:(DE-Juel1)129388
700 1 _ |a Wanek, W.
|b 3
|0 P:(DE-HGF)0
700 1 _ |a Lüttge, U.
|b 4
|u FZJ
|0 P:(DE-Juel1)VDB56523
700 1 _ |a Büdel, B.
|b 5
|0 P:(DE-HGF)0
773 _ _ |a 10.1016/j.flora.2006.12.001
|g Vol. 202, p. 521 - 529
|p 521 - 529
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|0 PERI:(DE-600)2068876-3
|t Flora
|v 202
|y 2007
|x 1618-0585
856 7 _ |u http://dx.doi.org/10.1016/j.flora.2006.12.001
909 C O |o oai:juser.fz-juelich.de:56249
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914 1 _ |y 2007
915 _ _ |0 StatID:(DE-HGF)0010
|a JCR/ISI refereed
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|d 31.10.2010
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981 _ _ |a I:(DE-Juel1)ICG-3-20090406

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