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Parelle, J.; Zapater, M.; Scotti-Saintagne, C.; Kremer, A.; Jolivet, Y.; Dreyer, E.; Brendel, O. |
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Title |
Quantitative trait loci of tolerance to waterlogging in a European oak (Quercus robur L.): physiological relevance and temporal effect patterns |
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Journal Article |
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Year |
2007 |
Publication  |
Plant Cell and Environment |
Abbreviated Journal |
Plant Cell Environ. |
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Volume |
30 |
Issue |
4 |
Pages |
422-434 |
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Keywords |
allelic substitution effect; correlation clustering; epinasty; hypertrophied lenticel; multi-environment model; root hypoxia |
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Abstract |
Quercus robur L. is a mid-European broadleaved tree species that grows readily on temporary waterlogged soils. An experiment aiming to identify potential markers of tolerance to waterlogging in this species and to assess the degree of genetic control over the corresponding traits was conducted. Quantitative trait loci (QTL) were assessed in an F-1 progeny for responses to waterlogging, and the relevance of the observed traits as markers of tolerance was investigated using a precise description of the time course of their expression. Five significant QTL involved in the response to waterlogging were identified. In particular, QTL were detected for the development of hypertrophied lenticels and for the degree of leaf epinasty, but not for the formation of adventitious roots. A multi-environment QTL model allowed a detailed description of the time course (7 weeks) of the allelic substitution effect of some of these QTL. Correlation clustering identified significant clusters of QTL, at inter-trait as well as at intra-trait level. These clusters suggest the occurrence of a genetically controlled response cascade to waterlogging. |
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UHP, UMR 1137, Ctr INRA Nancy, F-54280 Champenoux, France, Email: brendel@nancy.inra.fr |
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BLACKWELL PUBLISHING |
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0140-7791 |
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ISI:000244419700005 |
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EcoFoG @ eric.marcon @ |
Serial |
219 |
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Author |
Bonal, D.; Ponton, S.; Le Thiec, D.; Richard, B.; Ningre, N.; Herault, B.; Ogee, J.; Gonzalez, S.; Pignal, M.; Sabatier, D.; Guehl, J.M. |
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Title |
Leaf functional response to increasing atmospheric CO(2) concentrations over the last century in two northern Amazonian tree species: a historical delta(13)C and delta(18)O approach using herbarium samples |
Type |
Journal Article |
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Year |
2011 |
Publication |
Plant Cell and Environment |
Abbreviated Journal |
Plant Cell Environ. |
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Volume |
34 |
Issue |
8 |
Pages |
1332-1344 |
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Keywords |
carbon isotope composition; environmental change; herbarium; oxygen isotope composition; photosynthesis; stomata; tropical rainforests |
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Abstract |
We assessed the extent of recent environmental changes on leaf morphological (stomatal density, stomatal surface, leaf mass per unit area) and physiological traits (carbon isotope composition, delta(13)C(leaf), and discrimination, Delta(13)C(leaf), oxygen isotope composition, delta(18)O(leaf)) of two tropical rainforest species (Dicorynia guianensis; Humiria balsamifera) that are abundant in the Guiana shield (Northern Amazonia). Leaf samples were collected in different international herbariums to cover a 200 year time-period (1790-2004) and the whole Guiana shield. Using models describing carbon and oxygen isotope fractionations during photosynthesis, different scenarios of change in intercellular CO(2) concentrations inside the leaf (C(i)), stomatal conductance (g), and photosynthesis (A) were tested in order to understand leaf physiological response to increasing air CO(2) concentrations (C(a)). Our results confirmed that both species displayed physiological response to changing C(a). For both species, we observed a decrease of about 1.7% in delta(13)C(leaf) since 1950, without significant change in Delta(13)C(leaf) and leaf morphological traits. Furthermore, there was no clear change in delta(18)O(leaf) for Humiria over this period. Our simulation approach revealed that an increase in A, rather than a decrease in g, explained the observed trends for these tropical rainforest species, allowing them to maintain a constant ratio of C(i)/C(a). |
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[Bonal, D] INRA, UMR Ecofog, F-97387 Kourou, France, Email: bonal@nancy.inra.fr |
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Wiley-Blackwell |
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0140-7791 |
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WOS:000292698900010 |
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EcoFoG @ webmaster @ |
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330 |
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Barriault, I.; Barabe, D.; Cloutier, L.; Gibernau, M. |
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Title |
Pollination ecology and reproductive success in Jack-in-the-pulpit (Arisaema triphyllum) in Quebec (Canada) |
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Journal Article |
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Year |
2010 |
Publication |
Plant Biology |
Abbreviated Journal |
Plant Biol. |
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Volume |
12 |
Issue |
1 |
Pages |
161-171 |
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Keywords |
Araceae; bisexual inflorescence; deceptive pollination; Mycetophilidae; pollen load; Thysanoptera; visitation rates |
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Abstract |
Pollination ecology and reproductive success of Jack-in-the-pulpit (Arisaema triphyllum) were studied in two natural populations in Quebec, Canada. Individual A. triphyllum plants can be of three types: male, female or bisexual. In both populations studied, the presence of bisexual inflorescences was not negligible (13%), where 'female' and 'male' bisexual plants were categorised according to the relative number of stamens and ovaries. 'Male bisexual' plants produce only pollen and 'female bisexual' plants produce only fruit. Hence, A. triphyllum is a true dioecious plant, as each plant only reproduces through either the male or the female function. 'Female bisexual' plants were equivalent to female plants in terms of visitation rate by insects, fructification rate and production of berries and seeds. Neither agamospermy in female plants nor self-pollination in 'female bisexual' plants was found, thus A. triphyllum relies on insects for cross-pollination. Despite the long flowering cycle, a low visitation rate was documented: only 20-40% of inflorescences were visited, according to gender, by a mean of 1.5 insects. In this study, Mycetophilidae represented the most generically diversified and abundant family, as well as the most efficient insect pollinator, especially the genera Docosia and Mycetophila. |
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[Gibernau, M.] Univ Toulouse 3, Lab Evolut & Divers Biol, UMR, CNRS, F-31062 Toulouse 9, France, Email: gibernau@cict.fr |
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WILEY-BLACKWELL PUBLISHING, INC |
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1435-8603 |
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ISI:000272589700017 |
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EcoFoG @ eric.marcon @ |
Serial |
89 |
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Author |
Coq, S.; Weigel, J.; Bonal, D.; Hattenschwiler, S. |
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Title |
Litter mixture effects on tropical tree seedling growth – a greenhouse experiment |
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Journal Article |
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Year |
2012 |
Publication |
Plant Biology |
Abbreviated Journal |
Plant Biol. |
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Volume |
14 |
Issue |
4 |
Pages |
630-640 |
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Keywords |
Amazonian lowland rain forest; Autotoxicity; Belowground/aboveground interactions; Litter decomposition; Plant nutrition; Plant-soil feedback |
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Decomposing litter provides critical nutrients for plants, particularly in nutrient-poor ecosystems such as tropical forests. We hypothesised that decomposing litter improves the performance of a variety of tropical tree seedlings, and that this litter effect varies depending on the species of litter present in litter mixtures. We addressed these hypotheses with a large pot experiment manipulating a range of different litter mixtures of contrasting quality and using seedlings of four tree species from the Amazonian forest of French Guiana. In contrast to our initial hypothesis, decomposing litter had either neutral or negative impacts on seedling growth, despite strongly different growth rates, biomass allocation patterns and leaf and root traits among tree species. Tree species varied in their responses to litter additions, which were further modified by species identity of the added litter. Our data show litter species-specific effects on growth, biomass allocation and leaf and root traits of tropical tree seedlings. These results suggest that a net nutrient release from decomposing litter does not necessarily improve tree seedling growth, even under nutrient-limiting conditions. In conclusion, litter layer composition may affect seedling establishment and recruitment success beyond litter-derived plant nutrient availability, which may contribute to tree species composition and dynamics in the studied tropical forest. © 2012 German Botanical Society and The Royal Botanical Society of the Netherlands. |
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INRA, UMR, Écologie et Écophysiologie, Champenoux, France |
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14358603 (Issn) |
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Export Date: 27 June 2012; Source: Scopus; Coden: Pbiof; doi: 10.1111/j.1438-8677.2011.00534.x; Language of Original Document: English; Correspondence Address: Coq, S.; Laboratoire d'Ecologie Alpine (LECA), CNRS, Université Joseph Fourier, BP 53, F-38042 Grenoble, Cedex 09, France; email: sylvain.coq@gmail.com |
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EcoFoG @ webmaster @ |
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407 |
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Carrias, J.-F.; Céréghino, R.; Brouard, O.; Pélozuelo, L.; Dejean, A.; Couté, A.; Corbara, B.; Leroy, C. |
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Title |
Two coexisting tank bromeliads host distinct algal communities on a tropical inselberg |
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Journal Article |
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Year |
2014 |
Publication |
Plant Biology |
Abbreviated Journal |
Plant Biol. |
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Volume |
16 |
Issue |
5 |
Pages |
997-1004 |
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Keywords |
Algae; Bromeliaceae; Inselberg; Neotropics; Phytotelmata; Aechmea; algae; Bromeliaceae; Bumilleriopsis; Catopsis berteroniana; Chlorella (unclassified Chlorophyceae); Chlorella (unclassified Trebouxiophyceae); Chlorella sp.; Cyanobacteria; Eukaryota; Invertebrata; Protozoa |
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The tank bromeliads Aechmea aquilega (Salisb.) and Catopsis berteroniana (Schultes f.) coexist on a sun-exposed Neotropical inselberg in French Guiana, where they permit conspicuous freshwater pools to form that differ in size, complexity and detritus content. We sampled the algal communities (both eukaryotic and cyanobacterial taxa, including colourless forms) inhabiting either A. aquilega (n = 31) or C. berteroniana (n = 30) and examined differences in community composition and biomass patterns in relation to several biotic and abiotic variables. Chlorella sp. and Bumilleriopsis sp. were the most common taxa and dominated the algal biomass in A. aquilega and C. berteroniana, respectively. Using a redundancy analysis, we found that water volume, habitat complexity and the density of phagotrophic protozoa and collector-gatherer invertebrates were the main factors explaining the distribution of the algal taxa among the samples. Hierarchical clustering procedures based on abundance and presence/absence data clearly segregated the samples according to bromeliad species, revealing that the algal communities in the smaller bromeliad species were not a subset of the communities found in the larger bromeliad species. We conclude that, even though two coexisting tank bromeliad populations create adjacent aquatic habitats, each population hosts a distinct algal community. Hence, bromeliad diversity is thought to promote the local diversity of freshwater algae in the Neotropics. © 2014 German Botanical Society and The Royal Botanical Society of the Netherlands. |
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Address |
IRD, UMR AMAP (botAnique et bioinforMatique de l'Architecture des Plantes), Montpellier, France |
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Blackwell Publishing Ltd |
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14388677 (Issn) |
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Export Date: 2 September 2014; Coden: Pbiof; Correspondence Address: Carrias, J.-F.; Clermont Université, Université Blaise Pascal, BP 10448, F-63000 Clermont-Ferrand, France; email: j-francois.carrias@univ-bpclermont.fr; Funding Details: LQ13C020005, NSFC, National Natural Science Foundation of China |
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no |
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EcoFoG @ webmaster @ |
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560 |
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Author |
Leroy, C.; Petitclerc, F.; Orivel, J.; Corbara, B.; Carrias, J.-F.; Dejean, A.; Céréghino, R. |
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Title |
The influence of light, substrate and seed origin on the germination and establishment of an ant-garden bromeliad |
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Journal Article |
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Year |
2017 |
Publication |
Plant Biology |
Abbreviated Journal |
Plant Biol J |
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Volume |
19 |
Issue |
1 |
Pages |
70-78 |
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Keywords |
Aechmea mertensii; bromeliad; French Guiana; germination; plant performance; survival |
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Abstract |
Plant germination and development depend upon a seed's successful dispersal into a suitable habitat and its ability to grow and survive within the surrounding biotic and abiotic environment. The seeds of Aechmea mertensii, a tank-bromeliad species, are dispersed by either Camponotus femoratus or Neoponera goeldii, two ant species that initiate ant gardens (AGs). These two mutualistic ant species influence the vegetative and reproductive traits of the bromeliad through their divergent ecological preferences (i.e. light and substrate). We hypothesised that the seeds dispersed by these two ant species have underlying genetic differences affecting germination, growth and survival of A. mertensii seedlings in different ways. To test this, we used an experimental approach consisting of sowing seeds of A. mertensii: (i) taken from the two AG–ant associations (i.e. seed origin), (ii) in two contrasting light conditions, and (iii) on three different substrates. Light and substrate had significant effects on germination, survival and on eight key leaf traits reflecting plant performance. Seed origin had a significant effect only on germination and on two leaf traits (total dry mass and relative growth rate). Overall, this bromeliad performs better (i.e. high growth and survival rates) when growing both in the shade and in the carton nest developed by C. femoratus ants. These results suggest that the plasticity of the tank bromeliad A. mertensii is mainly due to environment but also to genetic differences related to seed origin, as some traits are heritable. Thus, these two ant species may play contrasting roles in shaping plant evolution and speciation. |
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1438-8677 |
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EcoFoG @ webmaster @ |
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712 |
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Author |
Castro, H.; Fortunel, C.; Freitas, H. |
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Title |
Effects of land abandonment on plant litter decomposition in a Montado system: relation to litter chemistry and community functional parameters |
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Journal Article |
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Year |
2010 |
Publication |
Plant and Soil |
Abbreviated Journal |
Plant Soil |
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Volume |
333 |
Issue |
1-2 |
Pages |
181-190 |
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Keywords |
Ecosystem processes; Land use change; Leaf dry matter content; Life form; Litter quality; Mediterranean |
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Abstract |
Changes in land use and subsequent shifts in vegetation can influence decomposition through changes in litter quality (chemistry and structure) and alterations of soil temperature and moisture. Our aim was to study the effects of land abandonment on litter decomposition in a Mediterranean area of Montado, South Portugal. We tested the hypothesis that decomposition tends to slow down with abandonment, as woody species, richer in lignified structures, replace herbaceous species. We assessed the decomposition of community litter in situ using litterbag technique. To test the influence of local conditions, we simultaneously incubated a standard litter in situ. Our results showed that the shift from herbaceous to shrub-dominated communities lead to decreased decomposition rates. Changes in litter decomposition were primarily driven by changes in litter quality, even though the uneven pattern of litter mass loss over the experiment might reveal an effect from possible differences in microclimate. Shrub litter had higher nutrient content than herbaceous litter, which seemed to favour higher initial decomposition rates, but lower decomposition rate in the longer term. Shrubs also contribute to woody litter, richer in lignin, and secondary compounds that retard decomposition, and may play a role in increasing pools of slowly decomposing organic matter. |
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[Castro, Helena; Freitas, Helena] Univ Coimbra, Dept Life Sci, Ctr Funct Ecol, P-3001401 Coimbra, Portugal, Email: hecastro@ci.uc.pt |
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SPRINGER |
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0032-079X |
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ISI:000280089400015 |
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EcoFoG @ eric.marcon @ |
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49 |
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Tremolieres, M.; Noel, V.; Herault, B. |
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Title |
Phosphorus and nitrogen allocation in Allium ursinum on an alluvial floodplain (Eastern France). Is there an effect of flooding history? |
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Journal Article |
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Year |
2009 |
Publication |
Plant and Soil |
Abbreviated Journal |
Plant Soil |
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Volume |
324 |
Issue |
1-2 |
Pages |
279-289 |
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Allium ursinum; Flooding history; Nitrogen; Nutrient bioavailability; Phosphorus; Rhine |
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Abstract |
The change in phosphorus and nitrogen content in a common geophyte spring species, Allium ursinum, is studied in alluvial forests in relation to three flooding histories related to river regulation: (1) annually flooded, (2) unflooded for 30 years, and (3) unflooded for 200 years. Flood suppression leads to a reduction of available P soil content as well as decreasing the biomass and the amount of phosphorus in plants, but has no significant effect on N plant content. Plant N:P ratio increases with the suppression of floods and is primarily driven by soil N:P ratios, in turn markedly linked to the total nitrogen in the soil. We highlighted a lower nutrient accumulation in leaves during plant growth in unflooded forests. Overall, our results suggest that P was the main limiting factor in unflooded forests while nitrogen was the main limiting factor in annually flooded forests. Flood suppression strongly affects the morphology and nutrient uptake by Allium ursinum and thus nutrient cycling in riverine forests. |
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[Tremolieres, Michele; Noel, Valerie] Inst Bot, LHYGES, UMR 7517, F-67083 Strasbourg, France, Email: michele.tremolieres@bota-ulp.u-strasbg.fr |
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0032-079X |
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ISI:000271028800020 |
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no |
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EcoFoG @ eric.marcon @ |
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99 |
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Brechet, L.; Ponton, S.; Roy, J.; Freycon, V.; Couteaux, M.M.; Bonal, D.; Epron, D. |
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Title |
Do tree species characteristics influence soil respiration in tropical forests? A test based on 16 tree species planted in monospecific plots |
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Journal Article |
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Year |
2009 |
Publication |
Plant and Soil |
Abbreviated Journal |
Plant Soil |
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Volume |
319 |
Issue |
1-2 |
Pages |
235-246 |
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Fine root; Litter quality; Nutrient cycling; Plant soil interactions; Soil respiration; Tropical plantations |
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The high spatial variability of soil respiration in tropical rainforests is well evaluated, but influences of biotic factors are not clearly understood. This study underlines the influence of tree species characteristics on soil respiration across a 16-monospecific plot design in a tropical plantation of French Guiana. A large variability of soil CO2 fluxes was observed among plots (i.e. 2.8 to 6.8 μmol m(-2) s(-1)) with the ranking being constant across seasons. There were no significant relationships between soil respiration and soil moisture or soil temperature, neither spatially, nor seasonally. The variability of soil respiration was mainly explained by quantitative factors such as leaf litterfall and basal area. Surprisingly, no significant relationship was observed between soil respiration and root biomass. However, the influence of substrate quality was revealed by a strong relationship between soil respiration and litterfall P (and litterfall N, to a lesser extent). |
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[Ponton, Stephane] Natl Inst Agr Res INRA Ctr Rech Nancy, Forest Ecol & Ecophysiol Unit, UMR EEF, F-54280 Seichamps, France, Email: ponton@nancy.inra.fr |
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SPRINGER |
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0032-079X |
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Notes |
ISI:000266143400020 |
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no |
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EcoFoG @ eric.marcon @ |
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110 |
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Prevost-Boure, N.C.; Ngao, J.; Berveiller, D.; Bonal, D.; Damesin, C.; Dufrene, E.; Lata, J.C.; Le Dantec, V.; Longdoz, B.; Ponton, S.; Soudani, K.; Epron, D. |
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Title |
Root exclusion through trenching does not affect the isotopic composition of soil CO2 efflux |
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Journal Article |
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Year |
2009 |
Publication |
Plant and Soil |
Abbreviated Journal |
Plant Soil |
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Volume |
319 |
Issue |
1-2 |
Pages |
1-13 |
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Keywords |
Stable carbon isotopes; Natural abundance; Soil respiration; Trenched plot; Rainforest; Temperate forest |
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Disentangling the autotrophic and heterotrophic components of soil CO2 efflux is critical to understanding the role of soil system in terrestrial carbon (C) cycling. In this study, we combined a stable C-isotope natural abundance approach with the trenched plot method to determine if root exclusion significantly affected the isotopic composition (delta C-13) of soil CO2 efflux (R-S). This study was performed in different forest ecosystems: a tropical rainforest and two temperate broadleaved forests, where trenched plots had previously been installed. At each site, R-S and its delta C-13 (delta C-13(Rs)) tended to be lower in trenched plots than in control plots. Contrary to R-S, delta C-13(Rs) differences were not significant. This observation is consistent with the small differences in delta C-13 measured on organic matter from root, litter and soil. The lack of an effect on delta C-13(Rs) by root exclusion could be from the small difference in delta C-13 between autotrophic and heterotrophic soil respirations, but further investigations are needed because of potential artefacts associated with the root exclusion technique. |
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[Prevost-Boure, Nicolas Chemidlin; Berveiller, Daniel; Damesin, Claire; Dufrene, Eric; Lata, Jean-Christophe; Soudani, Kamel] Univ Paris Sud, Lab Ecol Systemat & Evolut, AgroParisTech, CNRS,UMR 8079, F-75231 Paris, France, Email: nicolas.chemidlin-prevost-boure@u-psud.fr |
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SPRINGER |
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0032-079X |
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ISI:000266143400001 |
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EcoFoG @ eric.marcon @ |
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203 |
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