| |
Records |
Links |
|
Author |
Bonal, D.; Born, C.; Brechet, C.; Coste, S.; Marcon, E.; Roggy, J.C.; Guehl, J.M. |
|
| |
Title |
The successional status of tropical rainforest tree species is associated with differences in leaf carbon isotope discrimination and functional traits |
Type |
Journal Article |
| |
Year |
2007 |
Publication |
Annals of Forest Science |
Abbreviated Journal |
Ann. For. Sci. |
|
| |
Volume |
64 |
Issue |
2 |
Pages |
169-176 |
|
| |
Keywords |
C-13; functional diversity; leaf gas exchange; species grouping; tropical rainforest |
|
| |
Abstract |
We characterised the among species variability in leaf gas exchange and morphological traits under controlled conditions of seedlings of 22 tropical rainforest canopy species to understand the origin of the variability in leaf carbon isotope discrimination (Delta) among species with different growth and dynamic characteristics (successional gradient). Our results first suggest that these species pursue a consistent strategy in terms of. throughout their ontogeny (juveniles grown here versus canopy adult trees from the natural forest). Second, leaf Delta was negatively correlated with WUE and N, and positively correlated with g(s), but among species differences in Delta were mainly explained by differences in WUE. Finally, species belonging to different successional groups display distinct leaf functional and morphological traits. We confirmed that fast growing early successional species maximise carbon assimilation with high stomatal conductance. In contrast, fast and slow growing late successional species are both characterised by low carbon assimilation values, but by distinct stomatal conductance and leaf morphological features. Along the successional gradient, these differences result in much lower Delta for the intermediate species (i.e. fast growing late successional) as compared to the two other groups. |
|
| |
Address |
INRA Kourou, UMR Ecol Forets Guyane, F-97387 Kourou, Guyane, France, Email: damien.bonal@kourou.cirad.fr |
|
| |
Corporate Author |
|
Thesis |
|
|
| |
Publisher |
EDP SCIENCES S A |
Place of Publication |
|
Editor |
|
|
| |
Language |
|
Summary Language |
|
Original Title |
|
|
| |
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
| |
Series Volume |
|
Series Issue |
|
Edition |
|
|
| |
ISSN |
1286-4560 |
ISBN |
|
Medium |
|
|
| |
Area |
|
Expedition |
|
Conference |
|
|
| |
Notes  |
ISI:000244438100006 |
Approved |
no |
|
| |
Call Number |
EcoFoG @ eric.marcon @ |
Serial |
169 |
|
| Permanent link to this record |
| |
|
| |
|
Author |
Parelle, J.; Zapater, M.; Scotti-Saintagne, C.; Kremer, A.; Jolivet, Y.; Dreyer, E.; Brendel, O. |
|
| |
Title |
Quantitative trait loci of tolerance to waterlogging in a European oak (Quercus robur L.): physiological relevance and temporal effect patterns |
Type |
Journal Article |
| |
Year |
2007 |
Publication |
Plant Cell and Environment |
Abbreviated Journal |
Plant Cell Environ. |
|
| |
Volume |
30 |
Issue |
4 |
Pages |
422-434 |
|
| |
Keywords |
allelic substitution effect; correlation clustering; epinasty; hypertrophied lenticel; multi-environment model; root hypoxia |
|
| |
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. |
|
| |
Address |
UHP, UMR 1137, Ctr INRA Nancy, F-54280 Champenoux, France, Email: brendel@nancy.inra.fr |
|
| |
Corporate Author |
|
Thesis |
|
|
| |
Publisher |
BLACKWELL PUBLISHING |
Place of Publication |
|
Editor |
|
|
| |
Language |
|
Summary Language |
|
Original Title |
|
|
| |
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
| |
Series Volume |
|
Series Issue |
|
Edition |
|
|
| |
ISSN |
0140-7791 |
ISBN |
|
Medium |
|
|
| |
Area |
|
Expedition |
|
Conference |
|
|
| |
Notes |
ISI:000244419700005 |
Approved |
no |
|
| |
Call Number |
EcoFoG @ eric.marcon @ |
Serial |
219 |
|
| Permanent link to this record |
| |
|
| |
|
Author |
Delaval, M.; Charles-Dominique, P. |
|
| |
Title |
Edge effects on frugivorous and nectarivorous bat communities in a neotropical primary forest in French Guiana |
Type |
Journal Article |
| |
Year |
2006 |
Publication |
Revue d'Ecologie (La Terre et la Vie) |
Abbreviated Journal |
Rev. Ecol.-Terre Vie |
|
| |
Volume |
61 |
Issue |
4 |
Pages |
343-352 |
|
| |
Keywords |
|
|
| |
Abstract |
The impact of a road crossing a continuous Guyana primary forest was studied through the analysis of qualitative and quantitative changes in a frugivorous and nectarivorous bat community at different distances from forest edge. Bats were captured along three 3-km forest transects perpendicular to the edge, and at the Nouragues Station located 150 km in the interior of the primary forest block, in an uninhabited area. Along the 3-km transects, we caught over seven times more individuals than in primary forest, this value decreasing according to the distance from the edge. Moreover, at the very edge, species richness was higher than along transects, probably due to exchanges between primary forest and the open habitats. On the contrary, diversity values at forest edges were lower than in primary forest, with a demographic explosion of a few opportunistic phyllostomid species such as Carollia perspicillata and Artibeus jamaicensis. Species restricted to degraded habitat like Glossophaga soricina and Artibeus cinereus were still present 3 km away from the edge, where the proportion of C perspicillata was seven times higher than in primary forest at Nouragues. These changes in the community of bats have important consequences on seed and pollen dispersal. So edge effects may significantly affect both faunal and floral assemblage. We conclude that changes in bat community occur up to at least 3 km from forest edge, i. e. at a greater distance than that found for all other vertebrates previously studied. By their implications our results should be considered in habitat and species conservation management plans. |
|
| |
Address |
Dept Ecol & Gest Biodivers, UMR 5176, F-91800 Brunoy, France, Email: marguerite.delaval@wanadoo.fir |
|
| |
Corporate Author |
|
Thesis |
|
|
| |
Publisher |
SOC NATL PROTECTION NATURE ACCLIMATATION FRANCE |
Place of Publication |
|
Editor |
|
|
| |
Language |
|
Summary Language |
|
Original Title |
|
|
| |
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
| |
Series Volume |
|
Series Issue |
|
Edition |
|
|
| |
ISSN |
0249-7395 |
ISBN |
|
Medium |
|
|
| |
Area |
|
Expedition |
|
Conference |
|
|
| |
Notes |
ISI:000244361200003 |
Approved |
no |
|
| |
Call Number |
EcoFoG @ eric.marcon @ |
Serial |
168 |
|
| Permanent link to this record |
| |
|
| |
|
Author |
Rockwell, C.; Kainer, K.A.; Marcondes, N.; Baraloto, C. |
|
| |
Title |
Ecological limitations of reduced-impact logging at the smallholder scale |
Type |
Journal Article |
| |
Year |
2007 |
Publication |
Forest Ecology and Management |
Abbreviated Journal |
For. Ecol. Manage. |
|
| |
Volume |
238 |
Issue |
1-3 |
Pages |
365-374 |
|
| |
Keywords |
community forest management; forest inventories; liana cutting; sustained yield; timber management; tropical forest conservation |
|
| |
Abstract |
Reduced-impact logging (RIL) has many demonstrated benefits to the industrial logging operations for which they were developed. It is less clear whether these gains remain consistent in smallholder forest systems that increasingly play an important role in global conservation and that target a broader suite of outputs in their management schemes. We evaluate potential ecological consequences of five RIL components (pre-harvest inventories, harvest intensity, cutting cycles, skid trail planning, and liana cutting) when applied to small-scale operations in the Brazilian Amazon and provide suggestions for modifications to RIL guidelines for smallholder systems. Rapid assessment inventories of the entire landholding should be a part of crop tree selection to minimize inbreeding and recruitment failure. Additionally, while community-based taxonomists accurately identify species to common names, botanical samples must be verified with herbarium specimens to avoid market and ecological problems when multiple species share a single common name. We advocate that smallholder managers move beyond an emphasis on RIL guidelines, while still incorporating its basic tenets into practical application. Based on our analysis, this would include evaluating benefits of particular RIL components and assessing potential advantages that smallholders have over industrial operations. We suggest incorporating anthropogenically-generated forest patches of varying sizes and successional stages into a more formalized management system, incorporating and expanding on traditional ecological knowledge acquired over generations, and integrating enrichment plantings and tending of regeneration. (c) 2006 Published by Elsevier B.V. |
|
| |
Address |
Univ Florida, Sch Forest Resources & Conservat, Gainesville, FL 32611 USA, Email: crockwel@ufl.edu |
|
| |
Corporate Author |
|
Thesis |
|
|
| |
Publisher |
ELSEVIER SCIENCE BV |
Place of Publication |
|
Editor |
|
|
| |
Language |
|
Summary Language |
|
Original Title |
|
|
| |
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
| |
Series Volume |
|
Series Issue |
|
Edition |
|
|
| |
ISSN |
0378-1127 |
ISBN |
|
Medium |
|
|
| |
Area |
|
Expedition |
|
Conference |
|
|
| |
Notes |
ISI:000243761700033 |
Approved |
no |
|
| |
Call Number |
EcoFoG @ eric.marcon @ |
Serial |
220 |
|
| Permanent link to this record |
| |
|
| |
|
Author |
Ruelle, J.; Clair, B.; Beauchene, J.; Prevost, M.F.; Fournier, M. |
|
| |
Title |
Tension wood and opposite wood in 21 tropical rain forest species 2. Comparison of some anatomical and ultrastructural criteria |
Type |
Journal Article |
| |
Year |
2006 |
Publication |
IAWA Journal |
Abbreviated Journal |
IAWA J. |
|
| |
Volume |
27 |
Issue |
4 |
Pages |
341-376 |
|
| |
Keywords |
tension wood; opposite wood; tropical rain forest; vessels; wood anatomy; wood fibre |
|
| |
Abstract |
The anatomy of tension wood and opposite wood was compared in 21 tropical rain forest trees from 21 species belonging to 18 families from French Guyana. Wood specimens were taken from the upper and lower sides of naturally tilted trees. Measurement of the growth stress level ensured that the two samples were taken from wood tissues in a different mechanical state: highly tensile-stressed wood on the upper side, called tension wood and normally tensile-stressed wood on the lower side, called opposite wood. Quantitative parameters relating to fibres and vessels were measured on transverse sections of both tension and opposite wood to check if certain criteria can easily discriminate the two kinds of wood. We observed a decrease in the frequency of vessels in the tension wood in all the trees studied. Other criteria concerning shape and surface area of the vessels, fibre diameter or cell wall thickness did not reveal any general trend. At the ultrastructural level, we observed that the microfibril angle in the tension wood sample was lower than in opposite wood in all the trees except one (Licania membranacea). |
|
| |
Address |
UAG, ENGREF,UMR Ecol Forets Guyane, INRA,ECOFOG, CIRAD,CNRS, F-97379 Kourou, Guyana, Email: ruelle_j@kourou.cirad.fr |
|
| |
Corporate Author |
|
Thesis |
|
|
| |
Publisher |
INT ASSOC WOOD ANATOMISTS |
Place of Publication |
|
Editor |
|
|
| |
Language |
|
Summary Language |
|
Original Title |
|
|
| |
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
| |
Series Volume |
|
Series Issue |
|
Edition |
|
|
| |
ISSN |
0928-1541 |
ISBN |
|
Medium |
|
|
| |
Area |
|
Expedition |
|
Conference |
|
|
| |
Notes |
ISI:000242437400001 |
Approved |
no |
|
| |
Call Number |
EcoFoG @ eric.marcon @ |
Serial |
171 |
|
| Permanent link to this record |
| |
|
| |
|
Author |
Rahali, H.; Stien, D. |
|
| |
Title |
Highly-loaded amphiphilic polyimino resin: quench reagent and solid support for peptide synthesis |
Type |
Journal Article |
| |
Year |
2006 |
Publication |
Tetrahedron Letters |
Abbreviated Journal |
Tetrahedron Lett. |
|
| |
Volume |
47 |
Issue |
47 |
Pages |
8205-8207 |
|
| |
Keywords |
|
|
| |
Abstract |
We demonstrate herein that polyimino resin 4a prepared by condensation of alpha,alpha'-dichloro-p-xylene, ethylenediamine and tris-(2-aminoethyl)-amine can be successfully exploited as a quench reagent for acids and electrophiles both in aqueous and organic solutions. Scope and limitations of such a resin as a solid support for peptide synthesis were also investigated. (c) 2006 Elsevier Ltd. All rights reserved. |
|
| |
Address |
CNRS, UMR Ecofog, Inst Enseignement Super Guyane, F-97337 Cayenne, France, Email: didier.stien@guyane.cnrs.fr |
|
| |
Corporate Author |
|
Thesis |
|
|
| |
Publisher |
PERGAMON-ELSEVIER SCIENCE LTD |
Place of Publication |
|
Editor |
|
|
| |
Language |
|
Summary Language |
|
Original Title |
|
|
| |
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
| |
Series Volume |
|
Series Issue |
|
Edition |
|
|
| |
ISSN |
0040-4039 |
ISBN |
|
Medium |
|
|
| |
Area |
|
Expedition |
|
Conference |
|
|
| |
Notes |
ISI:000241910200002 |
Approved |
no |
|
| |
Call Number |
EcoFoG @ eric.marcon @ |
Serial |
172 |
|
| Permanent link to this record |
| |
|
| |
|
Author |
Bandou, E.; Lebailly, F.; Muller, F.; Dulormne, M.; Toribio, A.; Chabrol, J.; Courtecuisse, R.; Plenchette, C.; Prin, Y.; Duponnois, R.; Thiao, M.; Sylla, S.; Dreyfus, B.; Ba, A.M. |
|
| |
Title |
The ectomycorrhizal fungus Scleroderma bermudense alleviates salt stress in seagrape (Coccoloba uvifera L.) seedlings |
Type |
Journal Article |
| |
Year |
2006 |
Publication |
Mycorrhiza |
Abbreviated Journal |
Mycorrhiza |
|
| |
Volume |
16 |
Issue |
8 |
Pages |
559-565 |
|
| |
Keywords |
Coccoloba uvifera; ectomycorrhizal dependency; mineral uptake; salt stress; water status |
|
| |
Abstract |
The purpose of this study was to test the capacity of the ectomycorrhizal (ECM) fungus, Scleroderma bermudense, to alleviate saline stress in seagrape (Coccoloba uvifera L.) seedlings. Plants were grown over a range (0, 200, 350 and 500 mM) of NaCl levels for 12 weeks, after 4 weeks of non-saline pre-treatment under greenhouse conditions. Growth and mineral nutrition of the seagrape seedlings were stimulated by S. bermudense regardless of salt stress. Although ECM colonization was reduced with increasing NaCl levels, ECM dependency of seagrape seedlings increased. Tissues of ECM plants had significantly increased concentrations of P and K but lower Na and Cl concentrations than those of non-ECM plants. Higher K concentrations in the leaves of ECM plants suggested a higher osmoregulating capacity of these plants. Moreover, the water status of ECM plants was improved despite their higher evaporative leaf surface. The results suggest that the reduction in Na and Cl uptake together with a concomitant increase in P and K absorption and a higher water status in ECM plants may be important salt-alleviating mechanisms for seagrape seedlings growing in saline soils. |
|
| |
Address |
Univ Antilles Guyane, Fac Sci Exactes & Nat, Lab Biol & Physiol Vegetales, F-97159 Guadeloupe, France, Email: amadou.ba@univ-ag.fr |
|
| |
Corporate Author |
|
Thesis |
|
|
| |
Publisher |
SPRINGER |
Place of Publication |
|
Editor |
|
|
| |
Language |
|
Summary Language |
|
Original Title |
|
|
| |
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
| |
Series Volume |
|
Series Issue |
|
Edition |
|
|
| |
ISSN |
0940-6360 |
ISBN |
|
Medium |
|
|
| |
Area |
|
Expedition |
|
Conference |
|
|
| |
Notes |
ISI:000241687200006 |
Approved |
no |
|
| |
Call Number |
EcoFoG @ eric.marcon @ |
Serial |
221 |
|
| Permanent link to this record |
| |
|
| |
|
Author |
Bertani, S.; Houel, E.; Stien, D.; Chevolot, L.; Jullian, V.; Garavito, G.; Bourdy, G.; Deharo, E. |
|
| |
Title |
Simalikalactone D is responsible for the antimalarial properties of an amazonian traditional remedy made with Quassia amara L. (Simaroubaceae) |
Type |
Journal Article |
| |
Year |
2006 |
Publication |
Journal of Ethnopharmacology |
Abbreviated Journal |
J. Ethnopharmacol. |
|
| |
Volume |
108 |
Issue |
1 |
Pages |
155-157 |
|
| |
Keywords |
antimalarial; Quassia amara; quassinoids; simalikalactone D; traditional medicine |
|
| |
Abstract |
French Guiana (North-East Amazonia) records high malaria incidence rates. The traditional antimalarial remedy most widespread there is a simple tea made out from Quassia amara L. leaves (Simaroubaceae). This herbal tea displays an excellent antimalarial activity both in vitro and in vivo. A known quassinoid, simalikalactone D (SkD), was identified as the active compound, with an IC50 value of 10 nM against FeB1 Plasmodium falciparum chloroquine resistant strain in vitro. Lastly, it inhibits 50% of Plasmodium yoelii yoelii rodent malaria parasite at 3.7 mg/kg/day in vivo by oral route. These findings confirm the traditional use of this herbal tea. (c) 2006 Elsevier Ireland Ltd. All rights reserved. |
|
| |
Address |
Univ Toulouse 3, UMR 152, Ctr IRD, F-97323 Cayenne, French Guiana, Email: deharo@cayenne.ird.fr |
|
| |
Corporate Author |
|
Thesis |
|
|
| |
Publisher |
ELSEVIER IRELAND LTD |
Place of Publication |
|
Editor |
|
|
| |
Language |
|
Summary Language |
|
Original Title |
|
|
| |
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
| |
Series Volume |
|
Series Issue |
|
Edition |
|
|
| |
ISSN |
0378-8741 |
ISBN |
|
Medium |
|
|
| |
Area |
|
Expedition |
|
Conference |
|
|
| |
Notes |
ISI:000241573000023 |
Approved |
no |
|
| |
Call Number |
EcoFoG @ eric.marcon @ |
Serial |
173 |
|
| Permanent link to this record |
| |
|
| |
|
Author |
Scotti, I.; Delph, L.F. |
|
| |
Title |
Selective trade-offs and sex-chromosome evolution in Silene latifolia |
Type |
Journal Article |
| |
Year |
2006 |
Publication |
Evolution |
Abbreviated Journal |
Evolution |
|
| |
Volume |
60 |
Issue |
9 |
Pages |
1793-1800 |
|
| |
Keywords |
antagonistic genes; linkage map; quantitative trait loci; sex-specific expression; Y chromosome |
|
| |
Abstract |
Alleles of sexually antagonistic genes (i.e., genes with alleles affecting fitness in opposite directions in the two sexes) can avoid expression in the sex to which they are detrimental via two processes: they are subsumed into the nonrecombining, sex-determining portion of the sex chromosomes or they evolve sex-limited expression. The former is considered more likely and leads to Y-chromosome degeneration. We mapped quantitative trait loci of major effect for sexually dimorphic traits of Silene latifolia to the recombining portions of the sex chromosomes and found them to exhibit sex-specific expression, with the Y chromosome in males controlling a relatively larger proportion of genetic variance than the X in females and the average autosome. Both reproductive and ecophysiological traits map to the recombining region of the sex chromosomes. We argue that genetic correlations among traits maintain recombination and polymorphism for these genes because of balancing selection in males, whereas sex-limited expression represses detrimental alleles in females. Our data suggest that the Y chromosome of S. latifolia plays a major role in the control of key metabolic activities beyond reproductive functions. |
|
| |
Address |
Indiana Univ, Dept Biol, Bloomington, IN 47405 USA, Email: ivan.scotti@kourou.cirad.fr |
|
| |
Corporate Author |
|
Thesis |
|
|
| |
Publisher |
SOC STUDY EVOLUTION |
Place of Publication |
|
Editor |
|
|
| |
Language |
|
Summary Language |
|
Original Title |
|
|
| |
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
| |
Series Volume |
|
Series Issue |
|
Edition |
|
|
| |
ISSN |
0014-3820 |
ISBN |
|
Medium |
|
|
| |
Area |
|
Expedition |
|
Conference |
|
|
| |
Notes |
ISI:000241226800005 |
Approved |
no |
|
| |
Call Number |
EcoFoG @ eric.marcon @ |
Serial |
174 |
|
| Permanent link to this record |
| |
|
| |
|
Author |
Duminil, J.; Caron, H.; Scotti, I.; Cazal, S.O.; Petit, R.J. |
|
| |
Title |
Blind population genetics survey of tropical rainforest trees |
Type |
Journal Article |
| |
Year |
2006 |
Publication |
Molecular Ecology |
Abbreviated Journal |
Mol. Ecol. |
|
| |
Volume |
15 |
Issue |
12 |
Pages |
3505-3513 |
|
| |
Keywords |
Bayesian assignment tests; genetic diversity; geographical structure; South America; species delimitation |
|
| |
Abstract |
Rainforest tree species can be difficult to identify outside of their period of reproduction. Vascular tissues from Carapa spp. individuals were collected during a short field trip in French Guiana and analysed in the laboratory with nuclear and chloroplast markers. Using a Bayesian approach, > 90% of the samples could be assigned to one of two distinct clusters corresponding to previously described species, making it possible to estimate the genetic structure of each species and to identify cases of introgression. We argue that this blind procedure represents a first-choice rather than a fallback option whenever related taxa are investigated. |
|
| |
Address |
INRA, UMR Biodivers Genes & Ecosyst, F-33612 Cestas, France, Email: caron@pierroton.inra.fr |
|
| |
Corporate Author |
|
Thesis |
|
|
| |
Publisher |
BLACKWELL PUBLISHING |
Place of Publication |
|
Editor |
|
|
| |
Language |
|
Summary Language |
|
Original Title |
|
|
| |
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
| |
Series Volume |
|
Series Issue |
|
Edition |
|
|
| |
ISSN |
0962-1083 |
ISBN |
|
Medium |
|
|
| |
Area |
|
Expedition |
|
Conference |
|
|
| |
Notes |
ISI:000241157400002 |
Approved |
no |
|
| |
Call Number |
EcoFoG @ eric.marcon @ |
Serial |
175 |
|
| Permanent link to this record |
